示例#1
0
class PurchaseOrder(IdentifiableDomain):
    """Purchase and order definition."""

    __storm_table__ = 'purchase_order'

    ORDER_QUOTING = u'quoting'
    ORDER_PENDING = u'pending'
    ORDER_CONFIRMED = u'confirmed'
    ORDER_CONSIGNED = u'consigned'
    ORDER_CANCELLED = u'cancelled'
    ORDER_CLOSED = u'closed'

    statuses = collections.OrderedDict([
        (ORDER_QUOTING, _(u'Quoting')),
        (ORDER_PENDING, _(u'Pending')),
        (ORDER_CONFIRMED, _(u'Confirmed')),
        (ORDER_CONSIGNED, _(u'Consigned')),
        (ORDER_CANCELLED, _(u'Cancelled')),
        (ORDER_CLOSED, _(u'Closed')),
    ])

    FREIGHT_FOB = u'fob'
    FREIGHT_CIF = u'cif'

    freight_types = {FREIGHT_FOB: _(u'FOB'), FREIGHT_CIF: _(u'CIF')}

    #: A numeric identifier for this object. This value should be used instead of
    #: :obj:`Domain.id` when displaying a numerical representation of this object to
    #: the user, in dialogs, lists, reports and such.
    identifier = IdentifierCol()

    status = EnumCol(allow_none=False, default=ORDER_QUOTING)
    open_date = DateTimeCol(default_factory=localnow, allow_none=False)
    quote_deadline = DateTimeCol(default=None)
    expected_receival_date = DateTimeCol(default_factory=localnow)
    expected_pay_date = DateTimeCol(default_factory=localnow)
    # XXX This column is not being used anywhere
    receival_date = DateTimeCol(default=None)
    confirm_date = DateTimeCol(default=None)
    notes = UnicodeCol(default=u'')
    salesperson_name = UnicodeCol(default=u'')
    freight_type = EnumCol(allow_none=False, default=FREIGHT_FOB)
    expected_freight = PriceCol(default=0)

    surcharge_value = PriceCol(default=0)
    discount_value = PriceCol(default=0)

    consigned = BoolCol(default=False)
    supplier_id = IdCol()
    supplier = Reference(supplier_id, 'Supplier.id')
    branch_id = IdCol()
    branch = Reference(branch_id, 'Branch.id')

    station_id = IdCol(allow_none=False)
    #: The station this object was created at
    station = Reference(station_id, 'BranchStation.id')
    transporter_id = IdCol(default=None)
    transporter = Reference(transporter_id, 'Transporter.id')
    responsible_id = IdCol()
    responsible = Reference(responsible_id, 'LoginUser.id')
    group_id = IdCol()
    group = Reference(group_id, 'PaymentGroup.id')

    #: Indicates if the order is from a work order
    work_order_id = IdCol()
    work_order = Reference(work_order_id, 'WorkOrder.id')

    #
    # IContainer Implementation
    #

    def get_items(self, with_children=True):
        """Get the items of the purchase order

        :param with_children: indicate if we should fetch children_items or not
        """
        query = PurchaseItem.order == self
        if not with_children:
            query = And(query, Eq(PurchaseItem.parent_item_id, None))
        return self.store.find(PurchaseItem, query)

    def remove_item(self, item):
        if item.order is not self:
            raise ValueError(
                _(u'Argument item must have an order attribute '
                  'associated with the current purchase instance'))
        item.order = None
        self.store.maybe_remove(item)

    def add_item(self,
                 sellable,
                 quantity=Decimal(1),
                 parent=None,
                 cost=None,
                 icms_st_value=0,
                 ipi_value=0):
        """Add a sellable to this purchase.

        If the sellable is part of a package (parent is not None), then the actual cost
        and quantity will be calculated based on how many items of this component is on
        the package.

        :param sellable: the sellable being added
        :param quantity: How many units of this sellable we are adding
        :param cost: The price being paid for this sellable
        :param parent: The parent of this sellable, incase of a package
        """
        if cost is None:
            cost = sellable.cost

        if parent:
            component = parent.sellable.product.get_component(sellable)
            cost = cost / component.quantity
            quantity = quantity * component.quantity
        else:
            if sellable.product.is_package:
                # If this is a package, the cost will be calculated and updated by the
                # compoents of the package
                cost = Decimal('0')

        store = self.store
        return PurchaseItem(store=store,
                            order=self,
                            sellable=sellable,
                            quantity=quantity,
                            cost=cost,
                            parent_item=parent,
                            icms_st_value=icms_st_value,
                            ipi_value=ipi_value)

    #
    # Properties
    #

    @property
    def discount_percentage(self):
        """Discount by percentage.
        Note that percentage must be added as an absolute value not as a
        factor like 1.05 = 5 % of surcharge
        The correct form is 'percentage = 3' for a discount of 3 %"""
        discount_value = self.discount_value
        if not discount_value:
            return currency(0)
        subtotal = self.purchase_subtotal
        assert subtotal > 0, (u'the subtotal should not be zero '
                              u'at this point')
        total = subtotal - discount_value
        percentage = (1 - total / subtotal) * 100
        return quantize(percentage)

    @discount_percentage.setter
    def discount_percentage(self, value):
        self.discount_value = self._get_percentage_value(value)

    @property
    def surcharge_percentage(self):
        """Surcharge by percentage.
        Note that surcharge must be added as an absolute value not as a
        factor like 0.97 = 3 % of discount.
        The correct form is 'percentage = 3' for a surcharge of 3 %"""
        surcharge_value = self.surcharge_value
        if not surcharge_value:
            return currency(0)
        subtotal = self.purchase_subtotal
        assert subtotal > 0, (u'the subtotal should not be zero '
                              u'at this point')
        total = subtotal + surcharge_value
        percentage = ((total / subtotal) - 1) * 100
        return quantize(percentage)

    @surcharge_percentage.setter
    def surcharge_percentage(self, value):
        self.surcharge_value = self._get_percentage_value(value)

    @property
    def payments(self):
        """Returns all valid payments for this purchase

        This will return a list of valid payments for this purchase, that
        is, all payments on the payment group that were not cancelled.
        If you need to get the cancelled too, use self.group.payments. If this
        purchase does not have a payment group, return a empty list.

        :returns: a list of |payment|
        """
        return self.group.get_valid_payments() if self.group else []

    #
    # Private
    #

    def _get_percentage_value(self, percentage):
        if not percentage:
            return currency(0)
        subtotal = self.purchase_subtotal
        percentage = Decimal(percentage)
        return subtotal * (percentage / 100)

    def _payback_paid_payments(self):
        paid_value = self.group.get_total_paid()

        # If we didn't pay anything yet, there is no need to create a payback.
        if not paid_value:
            return

        money = PaymentMethod.get_by_name(self.store, u'money')
        payment = money.create_payment(
            Payment.TYPE_IN,
            self.group,
            self.branch,
            paid_value,
            description=_(u'%s Money Returned for Purchase %s') %
            (u'1/1', self.identifier))
        payment.set_pending()
        payment.pay()

    #
    # Public API
    #

    def is_paid(self):
        if not self.group:
            return False

        for payment in self.payments:
            if not payment.is_paid():
                return False
        return True

    def can_cancel(self):
        """Find out if it's possible to cancel the order

        :returns: True if it's possible to cancel the order, otherwise False
        """
        # FIXME: Canceling partial orders disabled until we fix bug 3282
        for item in self.get_items():
            if item.has_partial_received():
                return False
        return self.status in [
            self.ORDER_QUOTING, self.ORDER_PENDING, self.ORDER_CONFIRMED
        ]

    def can_close(self):
        """Find out if it's possible to close the order

        :returns: True if it's possible to close the order, otherwise False
        """

        # Consigned orders can be closed only after being confirmed
        if self.status == self.ORDER_CONSIGNED:
            return False

        for item in self.get_items():
            if not item.has_been_received():
                return False
        return True

    def confirm(self, confirm_date=None):
        """Confirms the purchase order

        :param confirm_data: optional, datetime
        """
        if confirm_date is None:
            confirm_date = TransactionTimestamp()

        if self.status not in [
                PurchaseOrder.ORDER_PENDING, PurchaseOrder.ORDER_CONSIGNED
        ]:
            fmt = _(u'Invalid order status, it should be '
                    u'ORDER_PENDING or ORDER_CONSIGNED, got %s')
            raise ValueError(fmt % (self.status_str, ))

        # In consigned purchases there is no payments at this point.
        if self.status != PurchaseOrder.ORDER_CONSIGNED and self.group:
            for payment in self.payments:
                payment.set_pending()

        if self.supplier and self.group:
            self.group.recipient = self.supplier.person

        self.responsible = get_current_user(self.store)
        self.status = PurchaseOrder.ORDER_CONFIRMED
        self.confirm_date = confirm_date

        Event.log(
            self.store, Event.TYPE_ORDER,
            _(u"Order %s, total value %2.2f, supplier '%s' "
              u"is now confirmed") %
            (self.identifier, self.purchase_total, self.supplier.person.name))

    def set_consigned(self):
        if self.status != PurchaseOrder.ORDER_PENDING:
            raise ValueError(
                _(u'Invalid order status, it should be '
                  u'ORDER_PENDING, got %s') % (self.status_str, ))

        self.responsible = get_current_user(self.store)
        self.status = PurchaseOrder.ORDER_CONSIGNED

    def close(self):
        """Closes the purchase order
        """
        if self.status != PurchaseOrder.ORDER_CONFIRMED:
            raise ValueError(
                _(u'Invalid status, it should be confirmed '
                  u'got %s instead') % self.status_str)
        self.status = self.ORDER_CLOSED

        Event.log(
            self.store, Event.TYPE_ORDER,
            _(u"Order %s, total value %2.2f, supplier '%s' "
              u"is now closed") %
            (self.identifier, self.purchase_total, self.supplier.person.name))

    def cancel(self):
        """Cancels the purchase order
        """
        assert self.can_cancel()

        # we have to cancel the payments too
        self._payback_paid_payments()
        self.group.cancel()

        self.status = self.ORDER_CANCELLED

    def receive_item(self, item, quantity_to_receive):
        if not item in self.get_pending_items():
            raise StoqlibError(
                _(u'This item is not pending, hence '
                  u'cannot be received'))
        quantity = item.quantity - item.quantity_received
        if quantity < quantity_to_receive:
            raise StoqlibError(
                _(u'The quantity that you want to receive '
                  u'is greater than the total quantity of '
                  u'this item %r') % item)
        self.increase_quantity_received(item, quantity_to_receive)

    def increase_quantity_received(self, purchase_item, quantity_received):
        sellable = purchase_item.sellable
        items = [
            item for item in self.get_items()
            if item.sellable.id == sellable.id
        ]
        qty = len(items)
        if not qty:
            raise ValueError(
                _(u'There is no purchase item for '
                  u'sellable %r') % sellable)

        purchase_item.quantity_received += quantity_received

    def update_products_cost(self):
        """Update purchase's items cost

        Update the costs of all products on this purchase
        to the costs specified in the order.
        """
        for item in self.get_items():
            # Since the only way the item have ipi_value is through importer of
            # a xml from stoqlink, and the cost will be always without ipi
            item.sellable.cost = item.cost + item.unit_ipi_value
            product = item.sellable.product
            product_supplier = product.get_product_supplier_info(self.supplier)
            product_supplier.base_cost = item.cost + item.unit_ipi_value

    @property
    def status_str(self):
        return PurchaseOrder.translate_status(self.status)

    @property
    def freight_type_name(self):
        if not self.freight_type in self.freight_types.keys():
            raise DatabaseInconsistency(
                _(u'Invalid freight_type, got %d') % self.freight_type)
        return self.freight_types[self.freight_type]

    @property
    def branch_name(self):
        return self.branch.get_description()

    @property
    def supplier_name(self):
        return self.supplier.get_description()

    @property
    def transporter_name(self):
        if not self.transporter:
            return u""
        return self.transporter.get_description()

    @property
    def responsible_name(self):
        return self.responsible and self.responsible.get_description() or ''

    @property
    def purchase_subtotal(self):
        """Get the subtotal of the purchase.
        The sum of all the items cost * items quantity
        """
        return currency(
            self.get_items().sum(PurchaseItem.cost * PurchaseItem.quantity)
            or 0)

    @property
    def purchase_total(self):
        subtotal = self.purchase_subtotal
        total = subtotal - self.discount_value + self.surcharge_value
        if total < 0:
            raise ValueError(_(u'Purchase total can not be lesser than zero'))
        # XXX: Since the purchase_total value must have two digits
        # (at the moment) we need to format the value to a 2-digit number and
        # then convert it to currency data type, because the subtotal value
        # may return a 3-or-more-digit value, depending on COST_PRECISION_DIGITS
        # parameters.
        return currency(get_formatted_price(total))

    @property
    def received_total(self):
        """Like {purchase_subtotal} but only takes into account the
        received items
        """
        return currency(self.get_items().sum(
            PurchaseItem.cost * PurchaseItem.quantity_received) or 0)

    def get_remaining_total(self):
        """The total value to be paid for the items not received yet
        """
        return self.purchase_total - self.received_total

    def get_pending_items(self, with_children=True):
        """
        Returns a sequence of all items which we haven't received yet.
        """
        return self.get_items(with_children=with_children).find(
            PurchaseItem.quantity_received < PurchaseItem.quantity)

    def get_partially_received_items(self):
        """
        Returns a sequence of all items which are partially received.
        """
        return self.get_items().find(PurchaseItem.quantity_received > 0)

    def get_open_date_as_string(self):
        return self.open_date and self.open_date.strftime("%x") or u""

    def get_quote_deadline_as_string(self):
        return self.quote_deadline and self.quote_deadline.strftime(
            "%x") or u""

    def get_receiving_orders(self):
        """Returns all ReceivingOrder related to this purchase order
        """
        from stoqlib.domain.receiving import PurchaseReceivingMap, ReceivingOrder
        tables = [PurchaseReceivingMap, ReceivingOrder]
        query = And(PurchaseReceivingMap.purchase_id == self.id,
                    PurchaseReceivingMap.receiving_id == ReceivingOrder.id)
        return self.store.using(*tables).find(ReceivingOrder, query)

    def get_data_for_labels(self):
        """ This function returns some necessary data to print the purchase's
        items labels
        """
        for purchase_item in self.get_items():
            sellable = purchase_item.sellable
            label_data = Settable(barcode=sellable.barcode,
                                  code=sellable.code,
                                  description=sellable.description,
                                  price=sellable.price,
                                  sellable=sellable,
                                  quantity=purchase_item.quantity)
            yield label_data

    def has_batch_item(self):
        """Fetch the storables from this purchase order and returns ``True`` if
        any of them is a batch storable.

        :returns: ``True`` if this purchase order has batch items, ``False`` if
        it doesn't.
        """
        return not self.store.find(
            Storable,
            And(self.id == PurchaseOrder.id, PurchaseOrder.id
                == PurchaseItem.order_id, PurchaseItem.sellable_id
                == Sellable.id, Sellable.id == Storable.id,
                Eq(Storable.is_batch, True))).is_empty()

    def create_receiving_order(self):
        from stoqlib.domain.receiving import ReceivingOrder
        receiving = ReceivingOrder(self.store, branch=self.branch)
        receiving.add_purchase(self)
        for item in self.get_items():
            receiving.add_purchase_item(item,
                                        quantity=item.quantity,
                                        ipi_value=item.ipi_value)

        return receiving

    #
    # Classmethods
    #

    @classmethod
    def translate_status(cls, status):
        if not status in cls.statuses:
            raise DatabaseInconsistency(
                _(u'Got an unexpected status value: '
                  u'%s') % status)
        return cls.statuses[status]

    @classmethod
    def find_by_work_order(cls, store, work_order):
        return store.find(PurchaseOrder, work_order=work_order)
示例#2
0
class ReceivingInvoice(IdentifiableDomain):

    __storm_table__ = 'receiving_invoice'

    FREIGHT_FOB_PAYMENT = u'fob-payment'
    FREIGHT_FOB_INSTALLMENTS = u'fob-installments'
    FREIGHT_CIF_UNKNOWN = u'cif-unknown'
    FREIGHT_CIF_INVOICE = u'cif-invoice'

    freight_types = collections.OrderedDict([
        (FREIGHT_FOB_PAYMENT, _(u"FOB - Freight value on a new payment")),
        (FREIGHT_FOB_INSTALLMENTS, _(u"FOB - Freight value on installments")),
        (FREIGHT_CIF_UNKNOWN, _(u"CIF - Freight value is unknown")),
        (FREIGHT_CIF_INVOICE,
         _(u"CIF - Freight value highlighted on invoice")),
    ])

    FOB_FREIGHTS = (
        FREIGHT_FOB_PAYMENT,
        FREIGHT_FOB_INSTALLMENTS,
    )
    CIF_FREIGHTS = (FREIGHT_CIF_UNKNOWN, FREIGHT_CIF_INVOICE)

    #: A numeric identifier for this object. This value should be used instead of
    #: :obj:`Domain.id` when displaying a numerical representation of this object to
    #: the user, in dialogs, lists, reports and such.
    identifier = IdentifierCol()

    #: Type of freight
    freight_type = EnumCol(allow_none=False, default=FREIGHT_FOB_PAYMENT)

    #: Total of freight paid in receiving order.
    freight_total = PriceCol(default=0)

    surcharge_value = PriceCol(default=0)

    #: Discount value in receiving order's payment.
    discount_value = PriceCol(default=0)

    #: Secure value paid in receiving order's payment.
    secure_value = PriceCol(default=0)

    #: Other expenditures paid in receiving order's payment.
    expense_value = PriceCol(default=0)

    # This is Brazil-specific information
    icms_total = PriceCol(default=0)
    icms_st_total = PriceCol(default=0)
    ipi_total = PriceCol(default=0)

    #: The invoice number of the order that has been received.
    invoice_number = IntCol()

    #: The invoice total value of the order received
    invoice_total = PriceCol(default=0)

    #: The invoice key of the order received
    invoice_key = UnicodeCol()

    responsible_id = IdCol()
    responsible = Reference(responsible_id, 'LoginUser.id')

    branch_id = IdCol()
    branch = Reference(branch_id, 'Branch.id')

    station_id = IdCol(allow_none=False)
    #: The station this object was created at
    station = Reference(station_id, 'BranchStation.id')

    supplier_id = IdCol()
    supplier = Reference(supplier_id, 'Supplier.id')

    transporter_id = IdCol()
    transporter = Reference(transporter_id, 'Transporter.id')

    group_id = IdCol()
    group = Reference(group_id, 'PaymentGroup.id')

    receiving_orders = ReferenceSet('id',
                                    'ReceivingOrder.receiving_invoice_id')

    @classmethod
    def check_unique_invoice_number(cls, store, invoice_number, supplier):
        count = store.find(
            cls,
            And(cls.invoice_number == invoice_number,
                ReceivingInvoice.supplier == supplier)).count()
        return count == 0

    @property
    def total_surcharges(self):
        """Returns the sum of all surcharges (purchase & receiving)"""
        total_surcharge = 0
        if self.surcharge_value:
            total_surcharge += self.surcharge_value
        if self.secure_value:
            total_surcharge += self.secure_value
        if self.expense_value:
            total_surcharge += self.expense_value
        if self.ipi_total:
            total_surcharge += self.ipi_total
        if self.icms_st_total:
            total_surcharge += self.icms_st_total

        for receiving in self.receiving_orders:
            total_surcharge += receiving.total_surcharges

        # CIF freights don't generate payments.
        if (self.freight_total and self.freight_type
                not in (self.FREIGHT_CIF_UNKNOWN, self.FREIGHT_CIF_INVOICE)):
            total_surcharge += self.freight_total

        return currency(total_surcharge)

    @property
    def total_discounts(self):
        """Returns the sum of all discounts (purchase & receiving)"""
        total_discount = 0
        if self.discount_value:
            total_discount += self.discount_value

        for receiving in self.receiving_orders:
            total_discount += receiving.total_discounts

        return currency(total_discount)

    @property
    def products_total(self):
        return currency(
            sum((r.products_total for r in self.receiving_orders), 0))

    @property
    def total(self):
        """Fetch the total, including discount and surcharge for both the
        purchase order and the receiving order.
        """
        total = self.products_total
        total -= self.total_discounts
        total += self.total_surcharges
        return currency(total)

    @property
    def total_for_payment(self):
        """Fetch the total for the invoice payment. Exclude the freight value if
        it will be in a diferent pament
        """
        total = self.total
        if self.freight_type == self.FREIGHT_FOB_PAYMENT:
            total -= self.freight_total
        return currency(total)

    @property
    def payments(self):
        """Returns all valid payments for this invoice

        This will return a list of valid payments for this invoice, that
        is, all payments on the payment group that were not cancelled.
        If you need to get the cancelled too, use self.group.payments.

        :returns: a list of |payment|
        """
        return self.group.get_valid_payments()

    @property
    def supplier_name(self):
        if not self.supplier:
            return u""
        return self.supplier.get_description()

    @property
    def transporter_name(self):
        if not self.transporter:
            return u""
        return self.transporter.get_description()

    @property
    def branch_name(self):
        return self.branch.get_description()

    @property
    def responsible_name(self):
        return self.responsible.get_description()

    @property
    def discount_percentage(self):
        discount_value = self.discount_value
        if not discount_value:
            return currency(0)
        subtotal = self.products_total
        assert subtotal > 0, (u'the subtotal should not be zero '
                              u'at this point')
        total = subtotal - discount_value
        percentage = (1 - total / subtotal) * 100
        return quantize(percentage)

    @discount_percentage.setter
    def discount_percentage(self, value):
        """Discount by percentage.
        Note that percentage must be added as an absolute value not as a
        factor like 1.05 = 5 % of surcharge
        The correct form is 'percentage = 3' for a discount of 3 %
        """
        self.discount_value = self._get_percentage_value(value)

    @property
    def surcharge_percentage(self):
        """Surcharge by percentage.
        Note that surcharge must be added as an absolute value not as a
        factor like 0.97 = 3 % of discount.
        The correct form is 'percentage = 3' for a surcharge of 3 %
        """
        surcharge_value = self.surcharge_value
        if not surcharge_value:
            return currency(0)
        subtotal = self.products_total
        assert subtotal > 0, (u'the subtotal should not be zero '
                              u'at this point')
        total = subtotal + surcharge_value
        percentage = ((total / subtotal) - 1) * 100
        return quantize(percentage)

    @surcharge_percentage.setter
    def surcharge_percentage(self, value):
        self.surcharge_value = self._get_percentage_value(value)

    def create_freight_payment(self, group=None):
        store = self.store
        money_method = PaymentMethod.get_by_name(store, u'money')
        # If we have a transporter, the freight payment will be for him
        if not group:
            if self.transporter:
                recipient = self.transporter.person
            else:
                recipient = self.supplier.person
            group = PaymentGroup(store=store, recipient=recipient)

        description = _(u'Freight for receiving %s') % (self.identifier, )
        payment = money_method.create_payment(self.branch,
                                              self.station,
                                              Payment.TYPE_OUT,
                                              group,
                                              self.freight_total,
                                              due_date=localnow(),
                                              description=description)
        payment.set_pending()
        return payment

    def guess_freight_type(self):
        """Returns a freight_type based on the purchase's freight_type"""
        purchases = list(self.get_purchase_orders())
        assert len(purchases) == 1

        purchase = purchases[0]
        if purchase.freight_type == PurchaseOrder.FREIGHT_FOB:
            if purchase.is_paid():
                freight_type = ReceivingInvoice.FREIGHT_FOB_PAYMENT
            else:
                freight_type = ReceivingInvoice.FREIGHT_FOB_INSTALLMENTS
        elif purchase.freight_type == PurchaseOrder.FREIGHT_CIF:
            if purchase.expected_freight:
                freight_type = ReceivingInvoice.FREIGHT_CIF_INVOICE
            else:
                freight_type = ReceivingInvoice.FREIGHT_CIF_UNKNOWN

        return freight_type

    def confirm(self, user: LoginUser):
        self.invoice_total = self.total
        if self.group:
            self.group.confirm()
        for receiving in self.receiving_orders:
            receiving.invoice_number = self.invoice_number

        # XXX: Maybe FiscalBookEntry should not reference the payment group, but
        # lets keep this way for now until we refactor the fiscal book related
        # code, since it will pretty soon need a lot of changes.
        group = self.group or self.get_purchase_orders().pop().group
        FiscalBookEntry.create_product_entry(self.store, self.branch, user,
                                             group, receiving.cfop,
                                             self.invoice_number,
                                             self.icms_total, self.ipi_total)

    def add_receiving(self, receiving):
        receiving.receiving_invoice = self

    def get_purchase_orders(self):
        purchases = set()
        for receiving in self.receiving_orders:
            purchases.update(set(receiving.purchase_orders))
        return purchases

    def _get_percentage_value(self, percentage):
        if not percentage:
            return currency(0)
        subtotal = self.products_total
        percentage = Decimal(percentage)
        return subtotal * (percentage / 100)
示例#3
0
文件: receiving.py 项目: esosaja/stoq
class ReceivingOrder(Domain):
    """Receiving order definition.
    """

    __storm_table__ = 'receiving_order'

    #: Products in the order was not received or received partially.
    STATUS_PENDING = u'pending'

    #: All products in the order has been received then the order is closed.
    STATUS_CLOSED = u'closed'

    FREIGHT_FOB_PAYMENT = u'fob-payment'
    FREIGHT_FOB_INSTALLMENTS = u'fob-installments'
    FREIGHT_CIF_UNKNOWN = u'cif-unknown'
    FREIGHT_CIF_INVOICE = u'cif-invoice'

    freight_types = collections.OrderedDict([
        (FREIGHT_FOB_PAYMENT, _(u"FOB - Freight value on a new payment")),
        (FREIGHT_FOB_INSTALLMENTS, _(u"FOB - Freight value on installments")),
        (FREIGHT_CIF_UNKNOWN, _(u"CIF - Freight value is unknown")),
        (FREIGHT_CIF_INVOICE,
         _(u"CIF - Freight value highlighted on invoice")),
    ])

    FOB_FREIGHTS = (
        FREIGHT_FOB_PAYMENT,
        FREIGHT_FOB_INSTALLMENTS,
    )
    CIF_FREIGHTS = (FREIGHT_CIF_UNKNOWN, FREIGHT_CIF_INVOICE)

    #: A numeric identifier for this object. This value should be used instead of
    #: :obj:`Domain.id` when displaying a numerical representation of this object to
    #: the user, in dialogs, lists, reports and such.
    identifier = IdentifierCol()

    #: status of the order
    status = EnumCol(allow_none=False, default=STATUS_PENDING)

    #: Date that order has been closed.
    receival_date = DateTimeCol(default_factory=localnow)

    #: Date that order was send to Stock application.
    confirm_date = DateTimeCol(default=None)

    #: Some optional additional information related to this order.
    notes = UnicodeCol(default=u'')

    #: Type of freight
    freight_type = EnumCol(allow_none=False, default=FREIGHT_FOB_PAYMENT)

    #: Total of freight paid in receiving order.
    freight_total = PriceCol(default=0)

    surcharge_value = PriceCol(default=0)

    #: Discount value in receiving order's payment.
    discount_value = PriceCol(default=0)

    #: Secure value paid in receiving order's payment.
    secure_value = PriceCol(default=0)

    #: Other expenditures paid in receiving order's payment.
    expense_value = PriceCol(default=0)

    # This is Brazil-specific information
    icms_total = PriceCol(default=0)
    ipi_total = PriceCol(default=0)

    #: The number of the order that has been received.
    invoice_number = IntCol()
    invoice_total = PriceCol(default=None)

    cfop_id = IdCol()
    cfop = Reference(cfop_id, 'CfopData.id')

    responsible_id = IdCol()
    responsible = Reference(responsible_id, 'LoginUser.id')

    supplier_id = IdCol()
    supplier = Reference(supplier_id, 'Supplier.id')

    branch_id = IdCol()
    branch = Reference(branch_id, 'Branch.id')

    transporter_id = IdCol(default=None)
    transporter = Reference(transporter_id, 'Transporter.id')

    purchase_orders = ReferenceSet('ReceivingOrder.id',
                                   'PurchaseReceivingMap.receiving_id',
                                   'PurchaseReceivingMap.purchase_id',
                                   'PurchaseOrder.id')

    def __init__(self, store=None, **kw):
        Domain.__init__(self, store=store, **kw)
        # These miss default parameters and needs to be set before
        # cfop, which triggers an implicit flush.
        self.branch = kw.pop('branch', None)
        self.supplier = kw.pop('supplier', None)
        if not 'cfop' in kw:
            self.cfop = sysparam.get_object(store, 'DEFAULT_RECEIVING_CFOP')

    #
    #  Public API
    #

    def confirm(self):
        for item in self.get_items():
            item.add_stock_items()

        purchases = list(self.purchase_orders)
        # XXX: Maybe FiscalBookEntry should not reference the payment group, but
        # lets keep this way for now until we refactor the fiscal book related
        # code, since it will pretty soon need a lot of changes.
        group = purchases[0].group
        FiscalBookEntry.create_product_entry(self.store, group, self.cfop,
                                             self.invoice_number,
                                             self.icms_total, self.ipi_total)

        self.invoice_total = self.total

        for purchase in purchases:
            if purchase.can_close():
                purchase.close()

    def add_purchase(self, order):
        return PurchaseReceivingMap(store=self.store,
                                    purchase=order,
                                    receiving=self)

    def add_purchase_item(self, item, quantity=None, batch_number=None):
        """Add a |purchaseitem| on this receiving order

        :param item: the |purchaseitem|
        :param decimal.Decimal quantity: the quantity of that item.
            If ``None``, it will be get from the item's pending quantity
        :param batch_number: a batch number that will be used to
            get or create a |batch| it will be get from the item's
            pending quantity or ``None`` if the item's |storable|
            is not controlling batches.
        :raises: :exc:`ValueError` when validating the quantity
            and testing the item's order for equality with :obj:`.order`
        """
        pending_quantity = item.get_pending_quantity()
        if quantity is None:
            quantity = pending_quantity

        if not (0 < quantity <= item.quantity):
            raise ValueError("The quantity must be higher than 0 and lower "
                             "than the purchase item's quantity")
        if quantity > pending_quantity:
            raise ValueError("The quantity must be lower than the item's "
                             "pending quantity")

        sellable = item.sellable
        storable = sellable.product_storable
        if batch_number is not None:
            batch = StorableBatch.get_or_create(self.store,
                                                storable=storable,
                                                batch_number=batch_number)
        else:
            batch = None

        self.validate_batch(batch, sellable)

        return ReceivingOrderItem(store=self.store,
                                  sellable=item.sellable,
                                  batch=batch,
                                  quantity=quantity,
                                  cost=item.cost,
                                  purchase_item=item,
                                  receiving_order=self)

    def update_payments(self, create_freight_payment=False):
        """Updates the payment value of all payments realated to this
        receiving. If create_freight_payment is set, a new payment will be
        created with the freight value. The other value as the surcharges and
        discounts will be included in the installments.

        :param create_freight_payment: True if we should create a new payment
                                       with the freight value, False otherwise.
        """
        difference = self.total - self.products_total
        if create_freight_payment:
            difference -= self.freight_total

        if difference != 0:
            # Get app pending payments for the purchases associated with this
            # receiving, and update them.
            payments = self.payments.find(status=Payment.STATUS_PENDING)
            payments_number = payments.count()
            if payments_number > 0:
                # XXX: There is a potential rounding error here.
                per_installments_value = difference / payments_number
                for payment in payments:
                    new_value = payment.value + per_installments_value
                    payment.update_value(new_value)

        if self.freight_total and create_freight_payment:
            self._create_freight_payment()

    def _create_freight_payment(self):
        store = self.store
        money_method = PaymentMethod.get_by_name(store, u'money')
        # If we have a transporter, the freight payment will be for him
        # (and in another payment group).
        purchases = list(self.purchase_orders)
        if len(purchases) == 1 and self.transporter is None:
            group = purchases[0].group
        else:
            if self.transporter:
                recipient = self.transporter.person
            else:
                recipient = self.supplier.person
            group = PaymentGroup(store=store, recipient=recipient)

        description = _(u'Freight for receiving %s') % (self.identifier, )
        payment = money_method.create_payment(Payment.TYPE_OUT,
                                              group,
                                              self.branch,
                                              self.freight_total,
                                              due_date=localnow(),
                                              description=description)
        payment.set_pending()
        return payment

    def get_items(self):
        store = self.store
        return store.find(ReceivingOrderItem, receiving_order=self)

    def remove_items(self):
        for item in self.get_items():
            item.receiving_order = None

    def remove_item(self, item):
        assert item.receiving_order == self
        type(item).delete(item.id, store=self.store)

    #
    # Properties
    #

    @property
    def payments(self):
        tables = [PurchaseReceivingMap, PurchaseOrder, Payment]
        query = And(PurchaseReceivingMap.receiving_id == self.id,
                    PurchaseReceivingMap.purchase_id == PurchaseOrder.id,
                    Payment.group_id == PurchaseOrder.group_id)
        return self.store.using(tables).find(Payment, query)

    @property
    def supplier_name(self):
        if not self.supplier:
            return u""
        return self.supplier.get_description()

    #
    # Accessors
    #

    @property
    def cfop_code(self):
        return self.cfop.code.encode()

    @property
    def transporter_name(self):
        if not self.transporter:
            return u""
        return self.transporter.get_description()

    @property
    def branch_name(self):
        return self.branch.get_description()

    @property
    def responsible_name(self):
        return self.responsible.get_description()

    @property
    def products_total(self):
        total = sum([item.get_total() for item in self.get_items()],
                    currency(0))
        return currency(total)

    @property
    def receival_date_str(self):
        return self.receival_date.strftime("%x")

    @property
    def total_surcharges(self):
        """Returns the sum of all surcharges (purchase & receiving)"""
        total_surcharge = 0
        if self.surcharge_value:
            total_surcharge += self.surcharge_value
        if self.secure_value:
            total_surcharge += self.secure_value
        if self.expense_value:
            total_surcharge += self.expense_value

        for purchase in self.purchase_orders:
            total_surcharge += purchase.surcharge_value

        if self.ipi_total:
            total_surcharge += self.ipi_total

        # CIF freights don't generate payments.
        if (self.freight_total and self.freight_type
                not in (self.FREIGHT_CIF_UNKNOWN, self.FREIGHT_CIF_INVOICE)):
            total_surcharge += self.freight_total

        return currency(total_surcharge)

    @property
    def total_discounts(self):
        """Returns the sum of all discounts (purchase & receiving)"""
        total_discount = 0
        if self.discount_value:
            total_discount += self.discount_value

        for purchase in self.purchase_orders:
            total_discount += purchase.discount_value

        return currency(total_discount)

    @property
    def total(self):
        """Fetch the total, including discount and surcharge for both the
        purchase order and the receiving order.
        """
        total = self.products_total
        total -= self.total_discounts
        total += self.total_surcharges

        return currency(total)

    def guess_freight_type(self):
        """Returns a freight_type based on the purchase's freight_type"""
        purchases = list(self.purchase_orders)
        assert len(purchases) == 1

        purchase = purchases[0]
        if purchase.freight_type == PurchaseOrder.FREIGHT_FOB:
            if purchase.is_paid():
                freight_type = ReceivingOrder.FREIGHT_FOB_PAYMENT
            else:
                freight_type = ReceivingOrder.FREIGHT_FOB_INSTALLMENTS
        elif purchase.freight_type == PurchaseOrder.FREIGHT_CIF:
            if purchase.expected_freight:
                freight_type = ReceivingOrder.FREIGHT_CIF_INVOICE
            else:
                freight_type = ReceivingOrder.FREIGHT_CIF_UNKNOWN

        return freight_type

    def _get_percentage_value(self, percentage):
        if not percentage:
            return currency(0)
        subtotal = self.products_total
        percentage = Decimal(percentage)
        return subtotal * (percentage / 100)

    @property
    def discount_percentage(self):
        discount_value = self.discount_value
        if not discount_value:
            return currency(0)
        subtotal = self.products_total
        assert subtotal > 0, (u'the subtotal should not be zero '
                              u'at this point')
        total = subtotal - discount_value
        percentage = (1 - total / subtotal) * 100
        return quantize(percentage)

    @discount_percentage.setter
    def discount_percentage(self, value):
        """Discount by percentage.
        Note that percentage must be added as an absolute value not as a
        factor like 1.05 = 5 % of surcharge
        The correct form is 'percentage = 3' for a discount of 3 %
        """
        self.discount_value = self._get_percentage_value(value)

    @property
    def surcharge_percentage(self):
        """Surcharge by percentage.
        Note that surcharge must be added as an absolute value not as a
        factor like 0.97 = 3 % of discount.
        The correct form is 'percentage = 3' for a surcharge of 3 %
        """
        surcharge_value = self.surcharge_value
        if not surcharge_value:
            return currency(0)
        subtotal = self.products_total
        assert subtotal > 0, (u'the subtotal should not be zero '
                              u'at this point')
        total = subtotal + surcharge_value
        percentage = ((total / subtotal) - 1) * 100
        return quantize(percentage)

    @surcharge_percentage.setter
    def surcharge_percentage(self, value):
        self.surcharge_value = self._get_percentage_value(value)
示例#4
0
class OpticalProduct(Domain):
    """Stores information about products sold by optical stores.

    There are 3 main types of products sold by optical stores:

    - Glass frames (without lenses)
    - Glass lenses
    - Contact lenses
    """
    __storm_table__ = 'optical_product'

    #: The frame of the glases (without lenses)
    TYPE_GLASS_FRAME = u'glass-frame'

    #: The glasses to be used with a frame
    TYPE_GLASS_LENSES = u'glass-lenses'

    #: Contact lenses
    TYPE_CONTACT_LENSES = u'contact-lenses'

    product_id = IdCol(allow_none=False)
    product = Reference(product_id, 'Product.id')

    # The type indicates what of the following fields should be edited.
    optical_type = EnumCol()

    #: If this product should be reserved automatically when added to the sale
    #: with work order
    auto_reserve = BoolCol(default=True)

    #
    # Glass frame details
    #

    #: The type of the frame (prescription or sunglasses)
    gf_glass_type = UnicodeCol()

    #: Size of the frame, accordingly to the manufacturer (may also be a string,
    #: for instance Large, one size fits all, etc..)
    gf_size = UnicodeCol()

    # The type of the lenses used in this frame. (for isntance: demo lens,
    # solar, polarized, mirrored)
    gf_lens_type = UnicodeCol()

    # Color of the frame, accordingly to the manufacturer specification
    gf_color = UnicodeCol()

    #
    # Glass lenses details
    #

    # Fotossensivel
    #: Type of the lenses photosensitivity (for instance: tints, sunsensors,
    #: transitions, etc...)
    gl_photosensitive = UnicodeCol()

    # Anti reflexo
    #: A description of the anti glare treatment the lenses have.
    gl_anti_glare = UnicodeCol()

    # Índice refração
    #: Decimal value describing the refraction index
    gl_refraction_index = DecimalCol()

    # Classificação
    #: lenses may be monofocal, bifocal or multifocal
    gl_classification = UnicodeCol()

    # Adição
    #: Free text describing the range of the possible additions.
    gl_addition = UnicodeCol()

    # Diametro
    # Free text describing the range of the possible diameters for the lens
    gl_diameter = UnicodeCol()

    # Altura
    #: Free text describing the height of the lens
    gl_height = UnicodeCol()

    # Disponibilidade
    #: Free text describint the avaiability of the lens (in what possible
    #: parameters they are avaiable. For instance: "-10,00 a -2,25 Cil -2,00"
    gl_availability = UnicodeCol()

    #
    # Contact lenses details
    #

    # Grau
    #: Degree of the lenses, a decimal from -30 to +30, in steps of +- 0.25
    cl_degree = DecimalCol()

    # Classificação
    #: Free text describing the classification of the lenses (solid, gel, etc..)
    cl_classification = UnicodeCol()

    # tipo lente
    #: The type of the lenses (monofocal, toric, etc..)
    cl_lens_type = UnicodeCol()

    # Descarte
    #: How often the lens should be discarded (anually, daily, etc..)
    cl_discard = UnicodeCol()

    # Adição
    #: Free text describing the addition of the lenses.
    cl_addition = UnicodeCol()

    # Cilindrico
    # XXX: I still need to verify if a decimal column is ok, or if there are
    # possible text values.
    #: Cylindrical value of the lenses.
    cl_cylindrical = DecimalCol()

    # Eixo
    # XXX: I still need to verify if a decimal column is ok, or if there are
    # possible text values.
    #: Axix  of the lenses.
    cl_axis = DecimalCol()

    #: Free text color description of the lens (for cosmetic use)
    cl_color = UnicodeCol()

    # Curvatura
    #: Free text description of the curvature. normaly a decimal, but may have
    #: textual descriptions
    cl_curvature = UnicodeCol()

    @classmethod
    def get_from_product(cls, product):
        return product.store.find(cls, product=product).one()
示例#5
0
class ReceivingOrder(IdentifiableDomain):
    """Receiving order definition.
    """

    __storm_table__ = 'receiving_order'

    #: Products in the order was not received or received partially.
    STATUS_PENDING = u'pending'

    #: All products in the order has been received then the order is closed.
    STATUS_CLOSED = u'closed'

    #: A numeric identifier for this object. This value should be used instead of
    #: :obj:`Domain.id` when displaying a numerical representation of this object to
    #: the user, in dialogs, lists, reports and such.
    identifier = IdentifierCol()

    #: status of the order
    status = EnumCol(allow_none=False, default=STATUS_PENDING)

    #: Date that order has been closed.
    receival_date = DateTimeCol(default_factory=localnow)

    #: Date that order was send to Stock application.
    confirm_date = DateTimeCol(default=None)

    #: Some optional additional information related to this order.
    notes = UnicodeCol(default=u'')

    #: The invoice number of the order that has been received.
    invoice_number = IntCol()

    # Número do Romaneio. The number used by the transporter to identify the packing
    packing_number = UnicodeCol()

    cfop_id = IdCol()
    cfop = Reference(cfop_id, 'CfopData.id')

    responsible_id = IdCol()
    responsible = Reference(responsible_id, 'LoginUser.id')

    branch_id = IdCol()
    branch = Reference(branch_id, 'Branch.id')

    station_id = IdCol(allow_none=False)
    #: The station this object was created at
    station = Reference(station_id, 'BranchStation.id')

    receiving_invoice_id = IdCol(default=None)
    receiving_invoice = Reference(receiving_invoice_id, 'ReceivingInvoice.id')

    purchase_orders = ReferenceSet('ReceivingOrder.id',
                                   'PurchaseReceivingMap.receiving_id',
                                   'PurchaseReceivingMap.purchase_id',
                                   'PurchaseOrder.id')

    def __init__(self, store=None, **kw):
        super(ReceivingOrder, self).__init__(store=store, **kw)
        # These miss default parameters and needs to be set before
        # cfop, which triggers an implicit flush.
        self.branch = kw.pop('branch', None)
        if not 'cfop' in kw:
            self.cfop = sysparam.get_object(store, 'DEFAULT_RECEIVING_CFOP')

    #
    #  Public API
    #

    def confirm(self, user: LoginUser):
        if self.receiving_invoice:
            self.receiving_invoice.confirm(user)

        for item in self.get_items():
            item.add_stock_items(user)

        purchases = list(self.purchase_orders)
        for purchase in purchases:
            if purchase.can_close():
                purchase.close()

        # XXX: Will the packing number aways be the same as the suppliert order?
        if purchase.work_order:
            self.packing_number = purchase.work_order.supplier_order

    def add_purchase(self, order):
        return PurchaseReceivingMap(store=self.store,
                                    purchase=order,
                                    receiving=self)

    def add_purchase_item(self,
                          item,
                          quantity=None,
                          batch_number=None,
                          parent_item=None,
                          ipi_value=0,
                          icms_st_value=0):
        """Add a |purchaseitem| on this receiving order

        :param item: the |purchaseitem|
        :param decimal.Decimal quantity: the quantity of that item.
            If ``None``, it will be get from the item's pending quantity
        :param batch_number: a batch number that will be used to
            get or create a |batch| it will be get from the item's
            pending quantity or ``None`` if the item's |storable|
            is not controlling batches.
        :raises: :exc:`ValueError` when validating the quantity
            and testing the item's order for equality with :obj:`.order`
        """
        pending_quantity = item.get_pending_quantity()
        if quantity is None:
            quantity = pending_quantity

        if not (0 < quantity <= item.quantity):
            raise ValueError("The quantity must be higher than 0 and lower "
                             "than the purchase item's quantity")
        if quantity > pending_quantity:
            raise ValueError("The quantity must be lower than the item's "
                             "pending quantity")

        sellable = item.sellable
        storable = sellable.product_storable
        if batch_number is not None:
            batch = StorableBatch.get_or_create(self.store,
                                                storable=storable,
                                                batch_number=batch_number)
        else:
            batch = None

        self.validate_batch(batch, sellable)

        return ReceivingOrderItem(store=self.store,
                                  sellable=item.sellable,
                                  batch=batch,
                                  quantity=quantity,
                                  cost=item.cost,
                                  ipi_value=ipi_value,
                                  icms_st_value=icms_st_value,
                                  purchase_item=item,
                                  receiving_order=self,
                                  parent_item=parent_item)

    def update_payments(self, create_freight_payment=False):
        """Updates the payment value of all payments realated to this
        receiving. If create_freight_payment is set, a new payment will be
        created with the freight value. The other value as the surcharges and
        discounts will be included in the installments.

        :param create_freight_payment: True if we should create a new payment
                                       with the freight value, False otherwise.
        """
        # If the invoice has more than one receiving, the values could be inconsistent
        assert self.receiving_invoice.receiving_orders.count() == 1
        difference = self.receiving_invoice.total - self.receiving_invoice.products_total
        if create_freight_payment:
            difference -= self.receiving_invoice.freight_total

        if difference != 0:
            # Get app pending payments for the purchases associated with this
            # receiving, and update them.
            payments = self.payments.find(status=Payment.STATUS_PENDING)
            payments_number = payments.count()
            if payments_number > 0:
                # XXX: There is a potential rounding error here.
                per_installments_value = difference / payments_number
                for payment in payments:
                    new_value = payment.value + per_installments_value
                    payment.update_value(new_value)

        if self.receiving_invoice.freight_total and create_freight_payment:
            purchases = list(self.purchase_orders)
            if len(purchases
                   ) == 1 and self.receiving_invoice.transporter is None:
                group = purchases[0].group
            else:
                group = None
            self.receiving_invoice.create_freight_payment(group=group)

    def get_items(self, with_children=True):
        store = self.store
        query = ReceivingOrderItem.receiving_order == self
        if not with_children:
            query = And(query, Eq(ReceivingOrderItem.parent_item_id, None))
        return store.find(ReceivingOrderItem, query)

    def remove_items(self):
        for item in self.get_items():
            item.receiving_order = None

    def remove_item(self, item):
        assert item.receiving_order == self
        type(item).delete(item.id, store=self.store)

    def is_totally_returned(self):
        return all(item.is_totally_returned() for item in self.get_items())

    #
    # Properties
    #

    @property
    def payments(self):
        if self.receiving_invoice and self.receiving_invoice.group:
            return self.receiving_invoice.payments

        tables = [PurchaseReceivingMap, PurchaseOrder, Payment]
        query = And(PurchaseReceivingMap.receiving_id == self.id,
                    PurchaseReceivingMap.purchase_id == PurchaseOrder.id,
                    Payment.group_id == PurchaseOrder.group_id)
        return self.store.using(tables).find(Payment, query)

    #
    # Accessors
    #

    @property
    def cfop_code(self):
        return self.cfop.code

    @property
    def freight_type(self):
        if self.receiving_invoice:
            return self.receiving_invoice.freight_type
        return None

    @property
    def branch_name(self):
        return self.branch.get_description()

    @property
    def responsible_name(self):
        return self.responsible.get_description()

    @property
    def products_total(self):
        total = sum((item.get_received_total() for item in self.get_items()),
                    currency(0))
        return currency(total)

    @property
    def product_total_with_ipi(self):
        total = sum((item.get_received_total(with_ipi=True)
                     for item in self.get_items()), currency(0))
        return currency(total)

    @property
    def receival_date_str(self):
        return self.receival_date.strftime("%x")

    @property
    def total_surcharges(self):
        """Returns the sum of all surcharges (purchase & receiving)"""
        total_surcharge = 0
        for purchase in self.purchase_orders:
            total_surcharge += purchase.surcharge_value
        return currency(total_surcharge)

    @property
    def total_quantity(self):
        """Returns the sum of all received quantities"""
        return sum(item.quantity
                   for item in self.get_items(with_children=False))

    @property
    def total_discounts(self):
        """Returns the sum of all discounts (purchase & receiving)"""
        total_discount = 0
        for purchase in self.purchase_orders:
            total_discount += purchase.discount_value
        return currency(total_discount)

    @property
    def total(self):
        """Fetch the total, including discount and surcharge for purchase order
        """
        total = self.product_total_with_ipi
        total -= self.total_discounts
        total += self.total_surcharges

        return currency(total)
示例#6
0
class Invoice(Domain):
    """Stores information about invoices"""

    __storm_table__ = 'invoice'

    TYPE_IN = u'in'
    TYPE_OUT = u'out'

    LEGACY_MODE = u'legacy'
    NFE_MODE = u'nfe'
    NFCE_MODE = u'nfce'

    MODES = {55: NFE_MODE, 65: NFCE_MODE}

    MODE_NAMES = {NFE_MODE: _('NF-e'), NFCE_MODE: _('NFC-e')}

    #: the invoice number
    invoice_number = IntCol()

    #: the operation nature
    operation_nature = UnicodeCol()

    #: the invoice type, representing an IN/OUT operation
    invoice_type = EnumCol(allow_none=False)

    #: the invoice series
    series = IntCol(default=None)

    #: the invoice mode
    mode = EnumCol(default=None)

    #: the key generated by NF-e plugin
    key = UnicodeCol()

    #: numeric code randomly generated for each NF-e
    cnf = UnicodeCol()

    branch_id = IdCol()

    #: the |branch| where this invoice was generated
    branch = Reference(branch_id, 'Branch.id')

    def __init__(self, **kw):
        if not 'branch' in kw:
            kw['branch'] = get_current_branch(kw.get('store'))
        super(Invoice, self).__init__(**kw)

    @classmethod
    def get_next_invoice_number(cls, store, mode=None, series=None):
        return Invoice.get_last_invoice_number(store, series, mode) + 1

    @classmethod
    def get_last_invoice_number(cls, store, series=None, mode=None):
        """Returns the last invoice number. If there is not an invoice
        number used, the returned value will be zero.

        :param store: a store
        :returns: an integer representing the last sale invoice number
        """
        current_branch = get_current_branch(store)
        last = store.find(cls, branch=current_branch, series=series,
                          mode=mode).max(cls.invoice_number)
        return last or 0

    def save_nfe_info(self, cnf, key):
        """ Save the CNF and KEY generated in NF-e.
        """
        self.cnf = cnf
        self.key = key

    def check_unique_invoice_number_by_branch(self,
                                              invoice_number,
                                              branch,
                                              mode,
                                              series=None):
        """Check if the invoice_number is used in determined branch

        :param invoice_number: the invoice number we want to check
        :param branch: the |branch| of the invoice
        :param mode: one of the Invoice.mode
        :param series: the series of the invoice
        """
        queries = {
            Invoice.invoice_number: invoice_number,
            Invoice.branch_id: branch.id,
            Invoice.mode: mode,
            Invoice.series: series
        }
        return self.check_unique_tuple_exists(queries)

    def check_invoice_info_consistency(self):
        """If the invoice number is set, series and mode should also be.

        We should have a database constraint for this, but since these three data
        isn't saved at once, the constraint would brake every time.
        """
        # FIXME: The nfce plugin is responsible for generating those
        # information now, but that broke our nfe plugin since it
        # needs an invoice number, but not the mode an the series.
        # We should find a better way of handling this since we don't
        # want to polute the nfe/nfce invoice number namespace.
        pg = get_plugin_manager()
        if pg.is_active('nfe'):  # pragma nocoverage
            return

        # FIXME: We should not use assert in this kind of code since
        # there's an optimization flag on python that removes all the asserts
        assert ((self.invoice_number and self.series and self.mode)
                or (not self.invoice_number and not self.series
                    and not self.mode))

    def on_create(self):
        self.check_invoice_info_consistency()

    def on_update(self):
        self.check_invoice_info_consistency()
示例#7
0
class OpticalPatientMeasures(Domain):

    __storm_table__ = 'optical_patient_measures'

    EYE_LEFT = u'left'
    EYE_RIGHT = u'right'

    eye_options = {
        EYE_LEFT: _('Left Eye'),
        EYE_RIGHT: _('Right Eye'),
    }

    create_date = DateTimeCol(default_factory=StatementTimestamp)

    client_id = IdCol(allow_none=False)
    #: The related client
    client = Reference(client_id, 'Client.id')

    responsible_id = IdCol(allow_none=False)
    #: The user that registred this information
    responsible = Reference(responsible_id, 'LoginUser.id')

    dominant_eye = EnumCol(allow_none=False, default=EYE_LEFT)

    le_keratometer_horizontal = UnicodeCol()
    le_keratometer_vertical = UnicodeCol()
    le_keratometer_axis = UnicodeCol()

    re_keratometer_horizontal = UnicodeCol()
    re_keratometer_vertical = UnicodeCol()
    re_keratometer_axis = UnicodeCol()

    le_eyebrown = UnicodeCol()
    le_eyelash = UnicodeCol()
    le_conjunctiva = UnicodeCol()
    le_sclerotic = UnicodeCol()
    le_iris_diameter = UnicodeCol()
    le_eyelid = UnicodeCol()
    le_eyelid_opening = UnicodeCol()
    le_cornea = UnicodeCol()
    #: Tear breakup time. How much time the eye takes to produce a tear
    le_tbut = UnicodeCol()

    #: test that checks how much tear the eye produces
    le_schirmer = UnicodeCol()

    re_eyebrown = UnicodeCol()
    re_eyelash = UnicodeCol()
    re_conjunctiva = UnicodeCol()
    re_sclerotic = UnicodeCol()
    re_iris_diameter = UnicodeCol()
    re_eyelid = UnicodeCol()
    re_eyelid_opening = UnicodeCol()
    re_cornea = UnicodeCol()

    #: Tear breakup time. How much time the eye takes to produce a tear
    re_tbut = UnicodeCol()

    #: test that checks how much tear the eye produces
    re_schirmer = UnicodeCol()

    notes = UnicodeCol()

    @property
    def responsible_name(self):
        return self.responsible.get_description()
示例#8
0
class ReturnedSale(IdentifiableDomain):
    """Holds information about a returned |sale|.

    This can be:
      * *trade*, a |client| is returning the |sale| and buying something
        new with that credit. In that case the returning sale is :obj:`.sale` and the
        replacement |sale| is in :obj:`.new_sale`.
      * *return sale* or *devolution*, a |client| is returning the |sale|
        without making a new |sale|.

    Normally the old sale which is returned is :obj:`.sale`, however it
    might be ``None`` in some situations for example, if the |sale| was done
    at a different |branch| that hasn't been synchronized or is using another
    system.
    """

    __storm_table__ = 'returned_sale'

    #: This returned sale was received on another branch, but is not yet
    #: confirmed. A product goes back to stock only after confirmation
    STATUS_PENDING = u'pending'

    #: This return was confirmed, meaning the product stock was increased.
    STATUS_CONFIRMED = u'confirmed'

    #: This returned sale was canceled, ie, The product stock is decreased back
    #: and the original sale still have the products.
    STATUS_CANCELLED = 'cancelled'

    statuses = collections.OrderedDict([
        (STATUS_PENDING, _(u'Pending')),
        (STATUS_CONFIRMED, _(u'Confirmed')),
        (STATUS_CANCELLED, _(u'Cancelled')),
    ])

    #: A numeric identifier for this object. This value should be used instead of
    #: :obj:`Domain.id` when displaying a numerical representation of this object to
    #: the user, in dialogs, lists, reports and such.
    identifier = IdentifierCol()

    #: Status of the returned sale
    status = EnumCol(default=STATUS_PENDING)

    #: the date this return was done
    return_date = DateTimeCol(default_factory=localnow)

    #: the date that the |returned sale| with the status pending was received
    confirm_date = DateTimeCol(default=None)

    # When this returned sale was undone
    undo_date = DateTimeCol(default=None)

    #: the reason why this return was made
    reason = UnicodeCol(default=u'')

    #: The reason this returned sale was undone
    undo_reason = UnicodeCol(default=u'')

    sale_id = IdCol(default=None)

    #: the |sale| we're returning
    sale = Reference(sale_id, 'Sale.id')

    new_sale_id = IdCol(default=None)

    #: if not ``None``, :obj:`.sale` was traded for this |sale|
    new_sale = Reference(new_sale_id, 'Sale.id')

    responsible_id = IdCol()

    #: the |loginuser| responsible for doing this return
    responsible = Reference(responsible_id, 'LoginUser.id')

    confirm_responsible_id = IdCol()

    #: the |loginuser| responsible for receiving the pending return
    confirm_responsible = Reference(confirm_responsible_id, 'LoginUser.id')

    undo_responsible_id = IdCol()
    #: the |loginuser| responsible for undoing this returned sale.
    undo_responsible = Reference(undo_responsible_id, 'LoginUser.id')

    branch_id = IdCol()

    #: the |branch| in which this return happened
    branch = Reference(branch_id, 'Branch.id')

    station_id = IdCol(allow_none=False)
    #: The station this object was created at
    station = Reference(station_id, 'BranchStation.id')

    #: a list of all items returned in this return
    returned_items = ReferenceSet('id', 'ReturnedSaleItem.returned_sale_id')

    #: |payments| generated by this returned sale
    payments = None

    #: |transporter| used in returned sale
    transporter = None

    invoice_id = IdCol()

    #: The |invoice| generated by the returned sale
    invoice = Reference(invoice_id, 'Invoice.id')

    def __init__(self, store=None, **kwargs):
        kwargs['invoice'] = Invoice(store=store, invoice_type=Invoice.TYPE_IN)
        super(ReturnedSale, self).__init__(store=store, **kwargs)

    @property
    def group(self):
        """|paymentgroup| for this return sale.

        Can return:
          * For a *trade*, use the |paymentgroup| from
            the replacement |sale|.
          * For a *devolution*, use the |paymentgroup| from
            the returned |sale|.
        """
        if self.new_sale:
            return self.new_sale.group
        if self.sale:
            return self.sale.group
        return None

    @property
    def client(self):
        """The |client| of this return

        Note that this is the same as :obj:`.sale.client`
        """
        return self.sale and self.sale.client

    @property
    def sale_total(self):
        """The current total amount of the |sale|.

        This is calculated by getting the
        :attr:`total amount <stoqlib.domain.sale.Sale.total_amount>` of the
        returned sale and subtracting the sum of :obj:`.returned_total` of
        all existing returns for the same sale.
        """
        if not self.sale:
            return currency(0)

        query = And(ReturnedSale.sale_id == self.sale.id,
                    ReturnedSale.status == ReturnedSale.STATUS_CONFIRMED)
        returned = self.store.find(ReturnedSale, query)
        # This will sum the total already returned for this sale,
        # excluiding *self* within the same store
        returned_total = sum([
            returned_sale.returned_total for returned_sale in returned
            if returned_sale != self
        ])

        return currency(self.sale.total_amount - returned_total)

    @property
    def paid_total(self):
        """The total paid for this sale

        Note that this is the same as
        :meth:`stoqlib.domain.sale.Sale.get_total_paid`
        """
        if not self.sale:
            return currency(0)

        return self.sale.get_total_paid()

    @property
    def returned_total(self):
        """The total being returned on this return

        This is done by summing the :attr:`ReturnedSaleItem.total` of
        all of this :obj:`returned items <.returned_items>`
        """
        return currency(sum([item.total for item in self.returned_items]))

    @property
    def total_amount(self):
        """The total amount for this return

        See :meth:`.return_` for details of how this is used.
        """
        return currency(self.sale_total - self.paid_total -
                        self.returned_total)

    @property
    def total_amount_abs(self):
        """The absolute total amount for this return

        This is the same as abs(:attr:`.total_amount`). Useful for
        displaying it on a gui, just changing it's label to show if
        it's 'overpaid' or 'missing'.
        """
        return currency(abs(self.total_amount))

    #
    #  IContainer implementation
    #

    def add_item(self, returned_item):
        assert not returned_item.returned_sale
        returned_item.returned_sale = self

    def get_items(self):
        return self.returned_items

    def remove_item(self, item):
        item.returned_sale = None
        self.store.maybe_remove(item)

    #
    # IInvoice implementation
    #

    @property
    def comments(self):
        return self.reason

    @property
    def discount_value(self):
        return currency(0)

    @property
    def invoice_subtotal(self):
        return self.returned_total

    @property
    def invoice_total(self):
        return self.returned_total

    @property
    def recipient(self):
        if self.sale and self.sale.client:
            return self.sale.client.person
        elif self.new_sale and self.new_sale.client:
            return self.new_sale.client.person
        return None

    @property
    def operation_nature(self):
        # TODO: Save the operation nature in new returned_sale table field.
        return _(u"Sale Return")

    #
    #  Public API
    #

    @classmethod
    def get_pending_returned_sales(cls, store, branch):
        """Returns a list of pending |returned_sale|

        :param store: a store
        :param branch: the |branch| where the sale was made
        """
        from stoqlib.domain.sale import Sale

        tables = [cls, Join(Sale, cls.sale_id == Sale.id)]
        # We want the returned_sale which sale was made on the branch
        # So we are comparing Sale.branch with |branch| to build the query
        return store.using(*tables).find(
            cls, And(cls.status == cls.STATUS_PENDING, Sale.branch == branch))

    def is_pending(self):
        return self.status == ReturnedSale.STATUS_PENDING

    def is_undone(self):
        return self.status == ReturnedSale.STATUS_CANCELLED

    def can_undo(self):
        return self.status == ReturnedSale.STATUS_CONFIRMED

    def return_(self, method_name=u'money', login_user=None):
        """Do the return of this returned sale.

        :param unicode method_name: The name of the payment method that will be
          used to create this payment.

        If :attr:`.total_amount` is:
          * > 0, the client is returning more than it paid, we will create
            a |payment| with that value so the |client| can be reversed.
          * == 0, the |client| is returning the same amount that needs to be paid,
            so existing payments will be cancelled and the |client| doesn't
            owe anything to us.
          * < 0, than the payments need to be readjusted before calling this.

        .. seealso: :meth:`stoqlib.domain.sale.Sale.return_` as that will be
           called after that payment logic is done.
        """
        assert self.sale and self.sale.can_return()
        self._clean_not_used_items()
        self._create_return_payment(method_name, self.returned_total)

        # FIXME: For now, we are not reverting the comission as there is a
        # lot of things to consider. See bug 5215 for information about it.
        self._revert_fiscal_entry()

        self.sale.return_(self)

        # Save operation_nature and branch in Invoice table.
        self.invoice.operation_nature = self.operation_nature
        self.invoice.branch = self.branch

        if self.sale.branch == self.branch:
            self.confirm(login_user)

    def trade(self):
        """Do a trade for this return

        Almost the same as :meth:`.return_`, but unlike it, this won't
        generate reversed payments to the client. Instead, it'll
        generate an inpayment using :obj:`.returned_total` value,
        so it can be used as an "already paid quantity" on :obj:`.new_sale`.
        """
        assert self.new_sale
        if self.sale:
            assert self.sale.can_return()
        self._clean_not_used_items()

        store = self.store
        group = self.group
        method = PaymentMethod.get_by_name(store, u'trade')
        description = _(u'Traded items for sale %s') % (
            self.new_sale.identifier, )
        value = self.returned_total

        value_as_discount = sysparam.get_bool('USE_TRADE_AS_DISCOUNT')
        if value_as_discount:
            self.new_sale.discount_value = self.returned_total
        else:
            payment = method.create_payment(Payment.TYPE_IN,
                                            group,
                                            self.branch,
                                            value,
                                            description=description)
            payment.set_pending()
            payment.pay()
            self._revert_fiscal_entry()

        login_user = api.get_current_user(self.store)

        if self.sale:
            self.sale.return_(self)
            if self.sale.branch == self.branch:
                self.confirm(login_user)
        else:
            # When trade items without a registered sale, confirm the
            # new returned sale.
            self.confirm(login_user)

    def remove(self):
        """Remove this return and it's items from the database"""
        # XXX: Why do we remove this object from the database
        # We must remove children_items before we remove its parent_item
        for item in self.returned_items.find(
                Eq(ReturnedSaleItem.parent_item_id, None)):
            [
                self.remove_item(child)
                for child in getattr(item, 'children_items')
            ]
            self.remove_item(item)
        self.store.remove(self)

    def confirm(self, login_user):
        """Receive the returned_sale_items from a pending |returned_sale|

        :param user: the |login_user| that received the pending returned sale
        """
        assert self.status == self.STATUS_PENDING
        self._return_items()
        old_status = self.status
        self.status = self.STATUS_CONFIRMED
        self.confirm_responsible = login_user
        self.confirm_date = localnow()
        StockOperationConfirmedEvent.emit(self, old_status)

    def undo(self, reason):
        """Undo this returned sale.

        This includes removing the returned items from stock again (updating the
        quantity decreased on the sale).

        :param reason: The reason for this operation.
        """
        assert self.can_undo()
        for item in self.get_items():
            item.undo()

        payment = self._get_cancel_candidate_payment(pending_only=True)
        if payment:
            # If there are pending out payments which match the returned value
            # and those payments are all of the same method, we can just cancel any of
            # these payments right away.
            payment.cancel()
        else:
            # We now need to create a new in payment for the total amount of this
            # returned sale.
            payment = self._get_cancel_candidate_payment()
            method = payment.method if payment else PaymentMethod.get_by_name(
                self.store, 'money')
            description = _(u'%s return undone for sale %s') % (
                method.description, self.sale.identifier)
            payment = method.create_payment(Payment.TYPE_IN,
                                            payment_group=self.group,
                                            branch=self.branch,
                                            value=self.returned_total,
                                            description=description,
                                            ignore_max_installments=True)
            payment.set_pending()
            payment.pay()

        self.status = self.STATUS_CANCELLED
        self.cancel_date = localnow()
        self.undo_reason = reason

        # if the sale status is returned, we must reset it to confirmed (only
        # confirmed sales can be returned)
        if self.sale.is_returned():
            self.sale.set_not_returned()

    #
    #  Private
    #

    def _create_return_payment(self, method_name, value):
        method = PaymentMethod.get_by_name(self.store, method_name)
        description = _(u'%s returned for sale %s') % (method.description,
                                                       self.sale.identifier)
        payment = method.create_payment(Payment.TYPE_OUT,
                                        payment_group=self.group,
                                        branch=self.branch,
                                        value=value,
                                        description=description)
        payment.set_pending()
        if method_name == u'credit':
            payment.pay()

    def _get_cancel_candidate_payment(self, pending_only=False):
        """Try to find a payment to cancel for a canceled operation

        If the user cancels or undoes an operation - e.g. undoing a returned sale -
        we can either cancel the pending payment, or create a reversal payment for its
        value.

        :param pending_only: If True, this will consider only pending payments.
        """
        queries = [
            Payment.payment_type == Payment.TYPE_OUT,
            Payment.value == self.returned_total
        ]
        if pending_only:
            queries.append(Payment.status == Payment.STATUS_PENDING)

        # We search for the payments which are correspondent to our operation aiming to
        # finding which payment methods are involved.
        payments = list(self.sale.payments.find(And(*queries)))
        methods = set(payment.method.method_name for payment in payments)

        # If and only if there is only one method from all the payments found, then any of the
        # payments can be cancelled or reversed.
        if len(methods) == 1:
            return payments[0]

        return

    def _return_items(self):
        # We must have at least one item to return
        assert self.returned_items.count()

        # FIXME
        branch = get_current_branch(self.store)
        for item in self.returned_items:
            item.return_(branch)

    def _get_returned_percentage(self):
        return Decimal(self.returned_total / self.sale.total_amount)

    def _clean_not_used_items(self):
        query = Eq(ReturnedSaleItem.parent_item_id, None)
        for item in self.returned_items.find(query):
            item.maybe_remove()

    def _revert_fiscal_entry(self):
        entry = self.store.find(FiscalBookEntry,
                                payment_group=self.group,
                                is_reversal=False).one()
        if not entry:
            return

        # FIXME: Instead of doing a partial reversion of fiscal entries,
        # we should be reverting the exact tax for each returned item.
        returned_percentage = self._get_returned_percentage()
        entry.reverse_entry(self.invoice.invoice_number,
                            icms_value=entry.icms_value * returned_percentage,
                            iss_value=entry.iss_value * returned_percentage,
                            ipi_value=entry.ipi_value * returned_percentage)
示例#9
0
class OpticalWorkOrder(Domain):
    """This holds the necessary information to execute an work order for optical
    stores.

    This includes all the details present in the prescription.

    For reference:
    http://en.wikipedia.org/wiki/Eyeglass_prescription

    See http://en.wikipedia.org/wiki/Eyeglass_prescription#Abbreviations_and_terms
    for reference no the names used here.

    In some places, RE is used as a short for right eye, and LE for left eye
    """
    __storm_table__ = 'optical_work_order'

    #: Lens used in glasses
    LENS_TYPE_OPHTALMIC = u'ophtalmic'

    #: Contact lenses
    LENS_TYPE_CONTACT = u'contact'

    #: The frame for the lens is a closed ring
    FRAME_TYPE_CLOSED_RING = u'closed-ring'

    #: The frame uses a nylon string to hold the lenses.
    FRAME_TYPE_NYLON = u'nylon'

    #: The frame is made 3 pieces
    FRAME_TYPE_3_PIECES = u'3-pieces'

    lens_types = {
        LENS_TYPE_OPHTALMIC: _('Ophtalmic'),
        LENS_TYPE_CONTACT: _('Contact'),
    }

    frame_types = {
        # Translators: Aro fechado
        FRAME_TYPE_3_PIECES: _('Closed ring'),

        # Translators: Fio de nylon
        FRAME_TYPE_NYLON: _('Nylon String'),

        # Translators: 3 preças
        FRAME_TYPE_CLOSED_RING: _('3 pieces'),
    }

    work_order_id = IdCol(allow_none=False)
    work_order = Reference(work_order_id, 'WorkOrder.id')

    medic_id = IdCol()
    medic = Reference(medic_id, 'OpticalMedic.id')

    prescription_date = DateTimeCol()

    #: The name of the patient. Note that we already have the client of the work
    #: order, but the patient may be someone else (like the son, father,
    #: etc...). Just the name is enough
    patient = UnicodeCol()

    #: The type of the lens, Contact or Ophtalmic
    lens_type = EnumCol(default=LENS_TYPE_OPHTALMIC)

    #
    #   Frame
    #

    #: The type of the frame. One of OpticalWorkOrder.FRAME_TYPE_*
    frame_type = EnumCol(default=FRAME_TYPE_CLOSED_RING)

    #: The vertical frame measure
    frame_mva = DecimalCol(default=decimal.Decimal(0))

    #: The horizontal frame measure
    frame_mha = DecimalCol(default=decimal.Decimal(0))

    #: The diagonal frame measure
    frame_mda = DecimalCol(default=decimal.Decimal(0))

    #: The brige is the part of the frame between the two lenses, above the nose.
    frame_bridge = DecimalCol()

    #
    # Left eye distance vision
    #

    le_distance_spherical = DecimalCol(default=0)
    le_distance_cylindrical = DecimalCol(default=0)
    le_distance_axis = DecimalCol(default=0)
    le_distance_prism = DecimalCol(default=0)
    le_distance_base = DecimalCol(default=0)
    le_distance_height = DecimalCol(default=0)

    #: Pupil distance (DNP in pt_BR)
    le_distance_pd = DecimalCol(default=0)
    le_addition = DecimalCol(default=0)

    #
    # Left eye distance vision
    #
    le_near_spherical = DecimalCol(default=0)
    le_near_cylindrical = DecimalCol(default=0)
    le_near_axis = DecimalCol(default=0)

    #: Pupil distance (DNP in pt_BR)
    le_near_pd = DecimalCol(default=0)

    #
    # Right eye distance vision
    #

    re_distance_spherical = DecimalCol(default=0)
    re_distance_cylindrical = DecimalCol(default=0)
    re_distance_axis = DecimalCol(default=0)
    re_distance_prism = DecimalCol(default=0)
    re_distance_base = DecimalCol(default=0)
    re_distance_height = DecimalCol(default=0)

    #: Pupil distance (DNP in pt_BR)
    re_distance_pd = DecimalCol(default=0)
    re_addition = DecimalCol(default=0)

    #
    # Right eye near vision
    #
    re_near_spherical = DecimalCol(default=0)
    re_near_cylindrical = DecimalCol(default=0)
    re_near_axis = DecimalCol(default=0)

    #: Pupil distance (DNP in pt_BR)
    re_near_pd = DecimalCol(default=0)

    @property
    def frame_type_str(self):
        return self.frame_types.get(self.frame_type, '')

    @property
    def lens_type_str(self):
        return self.lens_types.get(self.lens_type, '')
示例#10
0
class Sellable(Domain):
    """ Sellable information of a certain item such a |product|
    or a |service|.

    See also:
    `schema <http://doc.stoq.com.br/schema/tables/sellable.html>`__
    """
    __storm_table__ = 'sellable'

    #: the sellable is available and can be used on a |purchase|/|sale|
    STATUS_AVAILABLE = u'available'

    #: the sellable is closed, that is, it still exists for references,
    #: but it should not be possible to create a |purchase|/|sale| with it
    STATUS_CLOSED = u'closed'

    statuses = collections.OrderedDict([
        (STATUS_AVAILABLE, _(u'Available')),
        (STATUS_CLOSED, _(u'Closed')),
    ])

    #: a code used internally by the shop to reference this sellable.
    #: It is usually not printed and displayed to |clients|, barcode is for that.
    #: It may be used as an shorter alternative to the barcode.
    code = UnicodeCol(default=u'', validator=_validate_code)

    #: barcode, mostly for products, usually printed and attached to the
    #: package.
    barcode = UnicodeCol(default=u'', validator=_validate_barcode)

    #: status the sellable is in
    status = EnumCol(allow_none=False, default=STATUS_AVAILABLE)

    #: cost of the sellable, this is not tied to a specific |supplier|,
    #: which may have a different cost. This can also be the production cost of
    #: manufactured item by the company.
    cost = PriceCol(default=0)

    #: price of sellable, how much the |client| paid.
    base_price = PriceCol(default=0)

    #: the last time the cost was updated
    cost_last_updated = DateTimeCol(default_factory=localnow)

    #: the last time the price was updated
    price_last_updated = DateTimeCol(default_factory=localnow)

    #: full description of sellable
    description = UnicodeCol(default=u'')

    #: short description of sellable
    short_description = UnicodeCol(default=u'')

    #: maximum discount allowed
    max_discount = PercentCol(default=0)

    #: commission to pay after selling this sellable
    commission = PercentCol(default=0)

    #: A sort order to override default alphabetic order in lists.
    sort_order = IntCol()

    #: If this is a favorite sellable
    favorite = BoolCol()

    #: Some keywords for this sellable.
    keywords = UnicodeCol()

    #: notes for the sellable
    notes = UnicodeCol(default=u'')

    unit_id = IdCol(default=None)

    #: the |sellableunit|, quantities of this sellable are in this unit.
    unit = Reference(unit_id, 'SellableUnit.id')

    category_id = IdCol(default=None)

    #: a reference to category table
    category = Reference(category_id, 'SellableCategory.id')

    tax_constant_id = IdCol(default=None)

    #: the |sellabletaxconstant|, this controls how this sellable is taxed
    tax_constant = Reference(tax_constant_id, 'SellableTaxConstant.id')

    #: the |product| for this sellable or ``None``
    product = Reference('id', 'Product.id', on_remote=True)

    #: the |service| for this sellable or ``None``
    service = Reference('id', 'Service.id', on_remote=True)

    #: the |storable| for this |product|'s sellable
    product_storable = Reference('id', 'Storable.id', on_remote=True)

    default_sale_cfop_id = IdCol(default=None)

    #: the default |cfop| that will be used when selling this sellable
    default_sale_cfop = Reference(default_sale_cfop_id, 'CfopData.id')

    #: A special price used when we have a "on sale" state, this
    #: can be used for promotions
    on_sale_price = PriceCol(default=0)

    #: When the promotional/special price starts to apply
    on_sale_start_date = DateTimeCol(default=None)

    #: When the promotional/special price ends
    on_sale_end_date = DateTimeCol(default=None)

    #: This sellable's images
    images = ReferenceSet('id', 'Image.sellable_id')

    #: specifies whether the product requires kitchen production
    requires_kitchen_production = BoolCol(default=False)

    def __init__(self,
                 store=None,
                 category=None,
                 cost=None,
                 commission=None,
                 description=None,
                 price=None):
        """Creates a new sellable
        :param store: a store
        :param category: category of this sellable
        :param cost: the cost, defaults to 0
        :param commission: commission for this sellable
        :param description: readable description of the sellable
        :param price: the price, defaults to 0
        """

        Domain.__init__(self, store=store)

        if category:
            if commission is None:
                commission = category.get_commission()
            if price is None and cost is not None:
                markup = category.get_markup()
                price = self._get_price_by_markup(markup, cost=cost)

        self.category = category
        self.commission = commission or currency(0)
        self.cost = cost or currency(0)
        self.description = description
        self.price = price or currency(0)

    #
    # Helper methods
    #

    def _get_price_by_markup(self, markup, cost=None):
        if cost is None:
            cost = self.cost
        return currency(quantize(cost + (cost * (markup / currency(100)))))

    def _get_from_override(self, attr, branch):
        """Get an attribute from SellableBranchOverride

        :param attr: a string with a sellable attribute name
        :param branch: a branch

        :returns: The value of an attribute from the sellable_branch_override
        of a sellable, or the attribute from the actual sellable
        """
        override = SellableBranchOverride.find_by_sellable(sellable=self,
                                                           branch=branch)
        value = getattr(self, attr)
        if override is None:
            return value

        override_value = getattr(override, attr)
        return override_value if override_value is not None else value

    #
    # Properties
    #

    @property
    def status_str(self):
        """The sellable status as a string"""
        return self.statuses[self.status]

    @property
    def unit_description(self):
        """Returns the description of the |sellableunit| of this sellable

        :returns: the unit description or an empty string if no
          |sellableunit| was set.
        :rtype: unicode
        """
        return self.unit and self.unit.description or u""

    @property
    def image(self):
        """This sellable's main image."""
        # FIXME: Should we use .first() here? What will happen if there are
        # more than one image with "is_main" flag set to True? There's no way
        # to prevent that in the database
        return self.images.find(is_main=True).one()

    @property
    def markup(self):
        """Markup, the opposite of discount, a value added
        on top of the sale. It's calculated as::
          ((cost/price)-1)*100
        """
        if self.cost == 0:
            return Decimal(0)
        return ((self.price / self.cost) - 1) * 100

    @markup.setter
    def markup(self, markup):
        self.price = self._get_price_by_markup(markup)

    @property
    def price(self):
        if self.is_on_sale():
            return self.on_sale_price
        else:
            category = sysparam.get_object(self.store, 'DEFAULT_TABLE_PRICE')
            if category:
                info = self.get_category_price_info(category)
                if info:
                    return info.price
            return self.base_price

    @price.setter
    def price(self, price):
        if price < 0:
            # Just a precaution for gui validation fails.
            price = 0

        if self.is_on_sale():
            self.on_sale_price = price
        else:
            self.base_price = price

    #
    #  Accessors
    #

    def is_available(self, branch):
        """Whether the sellable is available and can be sold.

        :returns: ``True`` if the item can be sold, ``False`` otherwise.
        """
        # FIXME: Perhaps this should be done elsewhere. Johan 2008-09-26
        if sysparam.compare_object('DELIVERY_SERVICE', self.service):
            return True

        status = self._get_from_override('status', branch)
        return status == self.STATUS_AVAILABLE

    def set_available(self, branch):
        """Mark the sellable as available

        Being available means that it can be ordered or sold.

        :raises: :exc:`ValueError`: if the sellable is already available
        """
        if self.is_available(branch):
            raise ValueError('This sellable is already available')
        self.status = self.STATUS_AVAILABLE

    def is_closed(self, branch):
        """Whether the sellable is closed or not.

        :returns: ``True`` if closed, ``False`` otherwise.
        """
        return not self.is_available(branch)

    def close(self, branch):
        """Mark the sellable as closed.

        After the sellable is closed, this will call the close method of the
        service or product related to this sellable.

        :raises: :exc:`ValueError`: if the sellable is already closed
        """
        if self.is_closed(branch):
            raise ValueError('This sellable is already closed')

        assert self.can_close()
        self.status = Sellable.STATUS_CLOSED

        obj = self.service or self.product
        obj.close()

    def can_remove(self):
        """Whether we can delete this sellable from the database.

        ``False`` if the product/service was used in some cases below::

          - Sold or received
          - The |product| is in a |purchase|
        """
        if self.product and not self.product.can_remove():
            return False

        if self.service and not self.service.can_remove():
            return False

        return super(Sellable, self).can_remove(
            skip=[('product', 'id'), ('service', 'id'), (
                'image',
                'sellable_id'), ('client_category_price', 'sellable_id')])

    def can_close(self):
        """Whether we can close this sellable.

        :returns: ``True`` if the product has no stock left or the service
            is not required by the system (i.e. Delivery service is
            required). ``False`` otherwise.
        """
        obj = self.service or self.product
        return obj.can_close()

    def get_commission(self):
        return self.commission

    def get_suggested_markup(self):
        """Returns the suggested markup for the sellable

        :returns: suggested markup
        :rtype: decimal
        """
        return self.category and self.category.get_markup()

    def get_category_description(self):
        """Returns the description of this sellables category
        If it's unset, return the constant from the category, if any

        :returns: sellable category description or an empty string if no
          |sellablecategory| was set.
        :rtype: unicode
        """
        category = self.category
        return category and category.description or u""

    def get_tax_constant(self):
        """Returns the |sellabletaxconstant| for this sellable.
        If it's unset, return the constant from the category, if any

        :returns: the |sellabletaxconstant| or ``None`` if unset
        """
        if self.tax_constant:
            return self.tax_constant

        if self.category:
            return self.category.get_tax_constant()

    def get_category_prices(self):
        """Returns all client category prices associated with this sellable.

        :returns: the client category prices
        """
        return self.store.find(ClientCategoryPrice, sellable=self)

    def get_category_price_info(self, category):
        """Returns the :class:`ClientCategoryPrice` information for the given
        :class:`ClientCategory` and this |sellable|.

        :returns: the :class:`ClientCategoryPrice` or ``None``
        """
        info = self.store.find(ClientCategoryPrice,
                               sellable=self,
                               category=category).one()
        return info

    def get_price_for_category(self, category):
        """Given the |clientcategory|, returns the price for that category
        or the default sellable price.

        :param category: a |clientcategory|
        :returns: The value that should be used as a price for this sellable.
        """
        info = self.get_category_price_info(category)
        if info:
            return info.price
        return self.price

    def get_maximum_discount(self, category=None, user=None):
        user_discount = user.profile.max_discount if user else 0
        if category is not None:
            info = self.get_category_price_info(category) or self
        else:
            info = self

        return Decimal(max(user_discount, info.max_discount))

    def get_requires_kitchen_production(self, branch):
        """Check if a sellable requires kitchen production

        :param branch: branch for checking if there is a sellable_branch_override
        :returns: Whether the sellable requires kitchen production for a given branch
        """
        return self._get_from_override('requires_kitchen_production', branch)

    def check_code_exists(self, code):
        """Check if there is another sellable with the same code.

        :returns: ``True`` if we already have a sellable with the given code
          ``False`` otherwise.
        """
        return self.check_unique_value_exists(Sellable.code, code)

    def check_barcode_exists(self, barcode):
        """Check if there is another sellable with the same barcode.

        :returns: ``True`` if we already have a sellable with the given barcode
          ``False`` otherwise.
        """
        return self.check_unique_value_exists(Sellable.barcode, barcode)

    def check_taxes_validity(self, branch):
        """Check if icms taxes are valid.

        This check is done because some icms taxes (such as CSOSN 101) have
        a 'valid until' field on it. If these taxes has expired, we cannot sell
        the sellable.
        Check this method using assert inside a try clause.

        :raises: :exc:`TaxError` if there are any issues with the sellable taxes.
        """
        icms_template = self.product and self.product.get_icms_template(branch)
        SellableCheckTaxesEvent.emit(self, branch)
        if not icms_template:
            return
        elif not icms_template.p_cred_sn:
            return
        elif not icms_template.is_p_cred_sn_valid():
            # Translators: ICMS tax rate credit = Alíquota de crédito do ICMS
            raise TaxError(
                _("You cannot sell this item before updating "
                  "the 'ICMS tax rate credit' field on '%s' "
                  "Tax Class.\n"
                  "If you don't know what this means, contact "
                  "the system administrator.") %
                icms_template.product_tax_template.name)

    def is_on_sale(self):
        """Check if the price is currently on sale.

        :return: ``True`` if it is on sale, ``False`` otherwise
        """
        if not self.on_sale_price:
            return False

        return is_date_in_interval(localnow(), self.on_sale_start_date,
                                   self.on_sale_end_date)

    def is_valid_quantity(self, new_quantity):
        """Whether the new quantity is valid for this sellable or not.

        If the new quantity is fractioned, check on this sellable unit if it
        allows fractioned quantities. If not, this new quantity cannot be used.

        Note that, if the sellable lacks a unit, we will not allow
        fractions either.

        :returns: ``True`` if new quantity is Ok, ``False`` otherwise.
        """
        if self.unit and not self.unit.allow_fraction:
            return not bool(new_quantity % 1)

        return True

    def is_valid_price(self,
                       newprice,
                       category=None,
                       user=None,
                       extra_discount=None):
        """Checks if *newprice* is valid for this sellable

        Returns a dict indicating whether the new price is a valid price as
        allowed by the discount by the user, by the category or by the sellable
        maximum discount

        :param newprice: The new price that we are trying to sell this
            sellable for
        :param category: Optionally define a |clientcategory| that we will get
            the price info from
        :param user: The user role may allow a different discount percentage.
        :param extra_discount: some extra discount for the sellable
            to be considered for the min_price
        :returns: A dict with the following keys:
            * is_valid: ``True`` if the price is valid, else ``False``
            * min_price: The minimum price for this sellable.
            * max_discount: The maximum discount for this sellable.
        """
        if category is not None:
            info = self.get_category_price_info(category) or self
        else:
            info = self

        max_discount = self.get_maximum_discount(category=category, user=user)
        min_price = info.price * (1 - max_discount / 100)

        if extra_discount is not None:
            # The extra discount can be greater than the min_price, and
            # a negative min_price doesn't make sense
            min_price = max(currency(0), min_price - extra_discount)

        return {
            'is_valid': newprice >= min_price,
            'min_price': min_price,
            'max_discount': max_discount,
        }

    def copy_sellable(self, target=None):
        """This method copies self to another sellable

        If the |sellable| target is None, a new sellable is created.

        :param target: The |sellable| target for the copy
        returns: a |sellable| identical to self
        """
        if target is None:
            target = Sellable(store=self.store)

        props = [
            'base_price', 'category_id', 'cost', 'max_discount', 'commission',
            'notes', 'unit_id', 'tax_constant_id', 'default_sale_cfop_id',
            'on_sale_price', 'on_sale_start_date', 'on_sale_end_date'
        ]

        for prop in props:
            value = getattr(self, prop)
            setattr(target, prop, value)

        return target

    #
    # IDescribable implementation
    #

    def get_description(self, full_description=False):
        desc = self.description
        if full_description and self.get_category_description():
            desc = u"[%s] %s" % (self.get_category_description(), desc)

        return desc

    #
    # Domain hooks
    #

    def on_update(self):
        obj = self.product or self.service
        obj.on_update()

    def on_object_changed(self, attr, old_value, value):
        if attr == 'cost':
            self.cost_last_updated = localnow()
            if self.product:
                self.product.update_product_cost(value)
        elif attr == 'base_price':
            self.price_last_updated = localnow()

    #
    # Classmethods
    #

    def remove(self):
        """
        Remove this sellable. This will also remove the |product| or
        |sellable| and |categoryprice|
        """
        assert self.can_remove()

        # Remove category price before delete the sellable.
        category_prices = self.get_category_prices()
        for category_price in category_prices:
            category_price.remove()

        for image in self.images:
            self.store.remove(image)

        if self.product:
            self.product.remove()
        elif self.service:
            self.service.remove()

        self.store.remove(self)

    @classmethod
    def get_available_sellables_query(cls, store):
        """Get the sellables that are available and can be sold.

        For instance, this will filter out the internal sellable used
        by a |delivery|.

        This is similar to `.get_available_sellables`, but it returns
        a query instead of the actual results.

        :param store: a store
        :returns: a query expression
        """

        delivery = sysparam.get_object(store, 'DELIVERY_SERVICE')
        return And(cls.id != delivery.sellable.id,
                   cls.status == cls.STATUS_AVAILABLE)

    @classmethod
    def get_available_sellables(cls, store):
        """Get the sellables that are available and can be sold.

        For instance, this will filter out the internal sellable used
        by a |delivery|.

        :param store: a store
        :returns: a resultset with the available sellables
        """
        query = cls.get_available_sellables_query(store)
        return store.find(cls, query)

    @classmethod
    def get_unblocked_sellables_query(cls,
                                      store,
                                      storable=False,
                                      supplier=None,
                                      consigned=False):
        """Helper method for get_unblocked_sellables

        When supplier is not ```None``, you should use this query only with
        Viewables that join with supplier, like ProductFullStockSupplierView.

        :param store: a store
        :param storable: if ``True``, we should filter only the sellables that
          are also a |storable|.
        :param supplier: |supplier| to filter on or ``None``
        :param consigned: if the sellables are consigned

        :returns: a query expression
        """
        from stoqlib.domain.product import Product, ProductSupplierInfo
        query = And(cls.get_available_sellables_query(store),
                    cls.id == Product.id, Product.consignment == consigned)
        if storable:
            from stoqlib.domain.product import Storable
            query = And(query, Sellable.id == Product.id,
                        Storable.id == Product.id)

        if supplier:
            query = And(query, Sellable.id == Product.id,
                        Product.id == ProductSupplierInfo.product_id,
                        ProductSupplierInfo.supplier_id == supplier.id)

        return query

    @classmethod
    def get_unblocked_sellables(cls,
                                store,
                                storable=False,
                                supplier=None,
                                consigned=False):
        """
        Returns unblocked sellable objects, which means the
        available sellables plus the sold ones.

        :param store: a store
        :param storable: if `True`, only return sellables that also are
          |storable|
        :param supplier: a |supplier| or ``None``, if set limit the returned
          object to this |supplier|

        :rtype: queryset of sellables
        """
        query = cls.get_unblocked_sellables_query(store, storable, supplier,
                                                  consigned)
        return store.find(cls, query)

    @classmethod
    def get_unblocked_by_categories_query(cls,
                                          store,
                                          categories,
                                          include_uncategorized=True):
        """Returns the available sellables by a list of categories.

        :param store: a store
        :param categories: a list of SellableCategory instances
        :param include_uncategorized: whether or not include the sellables
            without a category

        :rtype: generator of sellables
        """
        queries = []
        if len(categories):
            queries.append(In(Sellable.category_id,
                              [c.id for c in categories]))
        if include_uncategorized:
            queries.append(Eq(Sellable.category_id, None))

        query = cls.get_unblocked_sellables_query(store)
        return And(query, Or(*queries))
示例#11
0
class ProductionOrder(IdentifiableDomain):
    """Production Order object implementation.
    """

    __storm_table__ = 'production_order'

    #: The production order is opened, production items might have been added.
    ORDER_OPENED = u'opened'

    #: The production order is waiting some conditions to start the
    #: manufacturing process.
    ORDER_WAITING = u'waiting'

    #: The production order have already started.
    ORDER_PRODUCING = u'producing'

    #: The production is in quality assurance phase.
    ORDER_QA = u'quality-assurance'

    #: The production have finished.
    ORDER_CLOSED = u'closed'

    #: Production cancelled
    ORDER_CANCELLED = u'cancelled'

    statuses = collections.OrderedDict([
        (ORDER_OPENED, _(u'Opened')),
        (ORDER_WAITING, _(u'Waiting')),
        (ORDER_PRODUCING, _(u'Producing')),
        (ORDER_QA, _(u'Quality Assurance')),
        (ORDER_CLOSED, _(u'Closed')),
        (ORDER_CANCELLED, _(u'Cancelled')),
    ])

    #: A numeric identifier for this object. This value should be used instead of
    #: :obj:`Domain.id` when displaying a numerical representation of this object to
    #: the user, in dialogs, lists, reports and such.
    identifier = IdentifierCol()

    #: the production order status
    status = EnumCol(allow_none=False, default=ORDER_OPENED)

    #: the date when the production order was created
    open_date = DateTimeCol(default_factory=localnow)

    #: the date when the production order have been closed
    close_date = DateTimeCol(default=None)

    #: the date when the production order have been cancelled
    cancel_date = DateTimeCol(default=None)

    #: the production order description
    description = UnicodeCol(default=u'')

    expected_start_date = DateTimeCol(default=None)

    start_date = DateTimeCol(default=None)

    responsible_id = IdCol(default=None)

    #: the person responsible for the production order
    responsible = Reference(responsible_id, 'Employee.id')

    branch_id = IdCol()

    #: branch this production belongs to
    branch = Reference(branch_id, 'Branch.id')

    station_id = IdCol(allow_none=False)
    #: The station this object was created at
    station = Reference(station_id, 'BranchStation.id')

    produced_items = ReferenceSet('id', 'ProductionProducedItem.order_id')

    #
    # IContainer implmentation
    #

    def get_items(self):
        return self.store.find(ProductionItem, order=self)

    def add_item(self, sellable, quantity=Decimal(1)):
        return ProductionItem(order=self,
                              product=sellable.product,
                              quantity=quantity,
                              store=self.store)

    def remove_item(self, item):
        assert isinstance(item, ProductionItem)
        if item.order is not self:
            raise ValueError(
                _(u'Argument item must have an order attribute '
                  u'associated with the current production '
                  u'order instance.'))
        item.order = None
        self.store.maybe_remove(item)

    #
    # Public API
    #

    def can_cancel(self):
        """Checks if this order can be cancelled

        Only orders that didn't start yet can be canceled, this means
        only opened and waiting productions.
        """
        return self.status in [self.ORDER_OPENED, self.ORDER_WAITING]

    def can_finalize(self):
        """Checks if this order can be finalized

        Only orders that didn't start yet can be canceled, this means
        only producing and waiting qa productions.
        """
        return self.status in [self.ORDER_PRODUCING, self.ORDER_QA]

    def get_service_items(self):
        """Returns all the services needed by this production.

        :returns: a sequence of :class:`ProductionService` instances.
        """
        return self.store.find(ProductionService, order=self)

    def remove_service_item(self, item):
        assert isinstance(item, ProductionService)
        if item.order is not self:
            raise ValueError(
                _(u'Argument item must have an order attribute '
                  u'associated with the current production '
                  u'order instance.'))
        item.order = None
        self.store.maybe_remove(item)

    def get_material_items(self):
        """Returns all the material needed by this production.

        :returns: a sequence of :class:`ProductionMaterial` instances.
        """
        return self.store.find(
            ProductionMaterial,
            order=self,
        )

    def start_production(self, user: LoginUser):
        """Start the production by allocating all the material needed.
        """
        assert self.status in [
            ProductionOrder.ORDER_OPENED, ProductionOrder.ORDER_WAITING
        ]

        for material in self.get_material_items():
            material.allocate(user)

        self.start_date = localtoday()
        self.status = ProductionOrder.ORDER_PRODUCING

    def cancel(self):
        """Cancel the production when this is Open or Waiting.
        """
        assert self.can_cancel()
        self.status = self.ORDER_CANCELLED
        self.cancel_date = localtoday()

    def is_completely_produced(self):
        return all(i.is_completely_produced() for i in self.get_items())

    def is_completely_tested(self):
        # Produced items are only stored if there are quality tests for this
        # product
        produced_items = list(self.produced_items)
        if not produced_items:
            return True

        return all([item.test_passed for item in produced_items])

    def try_finalize_production(self,
                                user: LoginUser,
                                ignore_completion=False):
        """When all items are completely produced, change the status of the
        production to CLOSED.
        """
        assert self.can_finalize(), self.status

        if ignore_completion:
            is_produced = True
        else:
            is_produced = self.is_completely_produced()
        is_tested = self.is_completely_tested()

        if is_produced and not is_tested:
            # Fully produced but not fully tested. Keep status as QA
            self.status = ProductionOrder.ORDER_QA
        elif is_produced and is_tested:
            # All items must be completely produced and tested
            self.close_date = localtoday()
            self.status = ProductionOrder.ORDER_CLOSED

        # If the order is closed, return the the remaining allocated material to
        # the stock
        if self.status == ProductionOrder.ORDER_CLOSED:
            # Return remaining allocated material to the stock
            for m in self.get_material_items():
                m.return_remaining(user)

            # Increase the stock for the produced items
            for p in self.produced_items:
                p.send_to_stock(user)

    def set_production_waiting(self):
        assert self.status == ProductionOrder.ORDER_OPENED

        self.status = ProductionOrder.ORDER_WAITING

    def get_status_string(self):
        return ProductionOrder.statuses[self.status]

    def get_branch_name(self):
        return self.branch.get_description()

    def get_responsible_name(self):
        if self.responsible is not None:
            return self.responsible.person.name
        return u''

    #
    # IDescribable implementation
    #

    def get_description(self):
        return self.description
示例#12
0
class Payment(Domain):
    """Payment, a transfer of money between a |branch| and |client| or a
    |supplier|.

    Payments between:

    * a client and a branch are :obj:`.TYPE_IN`, has a |sale| associated.
    * branch and a supplier are :obj:`.TYPE_OUT`, has a |purchase| associated.

    Payments are sometimes referred to as *installments*.

    Sales and purchase orders can be accessed via the
    :obj:`payment group <.group>`

    +-------------------------+-------------------------+
    | **Status**              | **Can be set to**       |
    +-------------------------+-------------------------+
    | :obj:`STATUS_PREVIEW`   | :obj:`STATUS_PENDING`   |
    +-------------------------+-------------------------+
    | :obj:`STATUS_PENDING`   | :obj:`STATUS_PAID`,     |
    |                         | :obj:`STATUS_CANCELLED` |
    +-------------------------+-------------------------+
    | :obj:`STATUS_PAID`      | :obj:`STATUS_PENDING`,  |
    |                         | :obj:`STATUS_CANCELLED` |
    +-------------------------+-------------------------+
    | :obj:`STATUS_CANCELLED` | None                    |
    +-------------------------+-------------------------+

    .. graphviz::

       digraph status {
         STATUS_PREVIEW -> STATUS_PENDING;
         STATUS_PENDING -> STATUS_PAID;
         STATUS_PENDING -> STATUS_CANCELLED;
         STATUS_PAID -> STATUS_PENDING;
         STATUS_PAID -> STATUS_CANCELLED;
       }

    Simple sale workflow:

    * Creating a sale, status is set to :obj:`STATUS_PREVIEW`
    * Confirming the sale, status is set to :obj:`STATUS_PENDING`
    * Paying the installment, status is set to :obj:`STATUS_PAID`
    * Cancelling the payment, status is set to :obj:`STATUS_CANCELLED`

    See also:
    `schema <http://doc.stoq.com.br/schema/tables/payment.html>`__
    """

    __storm_table__ = 'payment'

    #: incoming to the company, accounts receivable, payment from
    #: a |client| to a |branch|
    TYPE_IN = u'in'

    #: outgoing from the company, accounts payable, a payment from
    #: |branch| to a |supplier|
    TYPE_OUT = u'out'

    #: payment group this payment belongs to hasn't been confirmed,
    # should normally be filtered when showing a payment list
    STATUS_PREVIEW = u'preview'

    #: payment group has been confirmed and the payment has not been received
    STATUS_PENDING = u'pending'

    #: the payment has been received
    STATUS_PAID = u'paid'

    # FIXME: Remove these two
    #: Unused.
    STATUS_REVIEWING = u'reviewing'

    #: Unused.
    STATUS_CONFIRMED = u'confirmed'

    #: payment was cancelled, for instance the payments of the group was changed, or
    #: the group was cancelled.
    STATUS_CANCELLED = u'cancelled'

    statuses = {STATUS_PREVIEW: _(u'Preview'),
                STATUS_PENDING: _(u'To Pay'),
                STATUS_PAID: _(u'Paid'),
                STATUS_REVIEWING: _(u'Reviewing'),
                STATUS_CONFIRMED: _(u'Confirmed'),
                STATUS_CANCELLED: _(u'Cancelled')}

    #: type of payment :obj:`.TYPE_IN` or :obj:`.TYPE_OUT`
    payment_type = EnumCol(allow_none=False, default=TYPE_IN)

    #: A numeric identifier for this object. This value should be used instead of
    #: :obj:`Domain.id` when displaying a numerical representation of this object to
    #: the user, in dialogs, lists, reports and such.
    identifier = IdentifierCol()

    #: status, see |payment| for more information.
    status = EnumCol(allow_none=False, default=STATUS_PREVIEW)

    #: description payment, usually something like "1/3 Money for Sale 1234"
    description = UnicodeCol(default=None)

    # FIXME: use TransactionTimestamp() instead to avoid server/client date
    #        inconsistencies

    #: when this payment was opened
    open_date = DateTimeCol(default_factory=localnow)

    #: when this payment is due
    due_date = DateTimeCol()

    #: when this payment was paid
    paid_date = DateTimeCol(default=None)

    #: when this payment was cancelled
    cancel_date = DateTimeCol(default=None)

    # FIXME: Figure out when and why this differs from value
    #: base value
    base_value = PriceCol(default=None)

    #: value of the payment
    value = PriceCol()

    #: the actual amount that was paid, including penalties, interest, discount etc.
    paid_value = PriceCol(default=None)

    #: interest of this payment
    interest = PriceCol(default=0)

    #: discount, an absolute value with the difference between the
    #: sales price and :obj:`.value`
    discount = PriceCol(default=0)

    #: penalty of the payment
    penalty = PriceCol(default=0)

    # FIXME: Figure out what this is used for
    #: number of the payment
    payment_number = UnicodeCol(default=None)

    branch_id = IdCol(allow_none=False)

    #: |branch| associated with this payment.
    #: For a :obj:`.TYPE_IN` payment, this is the branch that will receive
    #: the money. For a :obj:`.TYPE_IN` payment, this is the branch that
    #: will make the payment
    branch = Reference(branch_id, 'Branch.id')

    method_id = IdCol()

    #: |paymentmethod| for this payment
    #: payment
    method = Reference(method_id, 'PaymentMethod.id')

    group_id = IdCol()

    #: |paymentgroup| for this payment
    group = Reference(group_id, 'PaymentGroup.id')

    category_id = IdCol()

    #: |paymentcategory| this payment belongs to, can be None
    category = Reference(category_id, 'PaymentCategory.id')

    #: list of :class:`comments <stoqlib.domain.payment.comments.PaymentComment>` for
    #: this payment
    comments = ReferenceSet('id', 'PaymentComment.payment_id')

    #: :class:`check data <stoqlib.domain.payment.method.CheckData>` for
    #: this payment
    check_data = Reference('id', 'CheckData.payment_id', on_remote=True)

    #: |accounttransaction| for this payment
    transaction = Reference('id', 'AccountTransaction.payment_id', on_remote=True)

    #: indicates if a bill has been received. They are usually delivered by
    #: mail before the due date. This is not indicating whether the payment has
    #: been paid, just that the receiver has notified the payer somehow.
    bill_received = BoolCol(default=False)

    attachment_id = IdCol()

    #: |attachment| for this payment
    attachment = Reference(attachment_id, 'Attachment.id')

    def __init__(self, store=None, **kw):
        if not 'value' in kw:
            raise TypeError('You must provide a value argument')
        if not 'base_value' in kw or not kw['base_value']:
            kw['base_value'] = kw['value']
        Domain.__init__(self, store=store, **kw)

    def _check_status(self, status, operation_name):
        fmt = 'Invalid status for %s operation: %s'
        assert self.status == status, (
            fmt % (operation_name,
                   self.statuses[self.status]))

    #
    # ORMObject hooks
    #

    def delete(self):
        # First call hooks, do this first so the hook
        # have access to everything it needs
        self.method.operation.payment_delete(self)
        # FIXME: BUG 5581 check if it is really safe to remove the payment
        # when using with synced databases
        self.store.remove(self)

    @classmethod
    def create_repeated(cls, store, payment, repeat_type, start_date, end_date):
        """Create a set of repeated payments.
        Given a type of interval (*repeat_type*), a start date and an end_date,
        this creates a list of payments for that interval.

        Note, this will also update the description of the payment that's passed
        in.
        :param store: a store
        :param payment: the payment to repeat
        :param repeat_type: the kind of repetition (weekly, monthly etc)
        :param start_date: the date to start this repetition
        :param end_date: the date to end this repetition
        :returns: a list of repeated payments
        """
        dates = create_date_interval(interval_type=repeat_type,
                                     start_date=start_date,
                                     end_date=end_date)
        n_dates = dates.count()
        if n_dates == 1:
            raise AssertionError
        description = payment.description
        payment.description = u'1/%d %s' % (n_dates, description)
        payment.due_date = dates[0]

        payments = []
        for i, date in enumerate(dates[1:]):
            p = Payment(open_date=payment.open_date,
                        branch=payment.branch,
                        payment_type=payment.payment_type,
                        status=payment.status,
                        description=u'%d/%d %s' % (i + 2, n_dates,
                                                   description),
                        value=payment.value,
                        base_value=payment.base_value,
                        due_date=date,
                        method=payment.method,
                        group=payment.group,
                        category=payment.category,
                        store=store)
            payments.append(p)
        return payments

    #
    # Properties
    #

    @property
    def comments_number(self):
        """The number of |paymentcomments| for this payment"""
        return self.comments.count()

    @property
    def bank_account_number(self):
        """For check payments, the :class:`bank account <BankAccount>` number"""
        # This is used by test_payment_method, and is a convenience
        # property, ideally we should move it to payment operation
        # somehow
        if self.method.method_name == u'check':
            data = self.method.operation.get_check_data_by_payment(self)
            bank_account = data.bank_account
            if bank_account:
                return bank_account.bank_number

    @property
    def installment_number(self):
        payments = self.group.get_valid_payments().order_by(
            Payment.identifier)
        for i, payment in enumerate(payments):
            if self == payment:
                return i + 1

    @property
    def status_str(self):
        """The :obj:`Payment.status` as a translated string"""
        if not self.status in self.statuses:
            raise DatabaseInconsistency('Invalid status for Payment '
                                        'instance, got %d' % self.status)
        return self.statuses[self.status]

    def get_days_late(self):
        """For due payments, the number of days late this payment is

        :returns: the number of days late
        """
        if self.status == Payment.STATUS_PAID:
            return 0

        days_late = localtoday().date() - self.due_date.date()
        if days_late.days < 0:
            return 0

        return days_late.days

    def set_pending(self):
        """Set a :obj:`.STATUS_PREVIEW` payment as :obj:`.STATUS_PENDING`.
        This also means that this is valid payment and its owner
        actually can charge it
        """
        self._check_status(self.STATUS_PREVIEW, u'set_pending')
        self.status = self.STATUS_PENDING

    def set_not_paid(self, change_entry):
        """Set a :obj:`.STATUS_PAID` payment as :obj:`.STATUS_PENDING`.
        This requires clearing paid_date and paid_value

        :param change_entry: a :class:`PaymentChangeHistory` object,
          that will hold the changes information
        """
        self._check_status(self.STATUS_PAID, u'set_not_paid')

        if self.transaction:
            self.transaction.create_reverse()

        change_entry.last_status = self.STATUS_PAID
        change_entry.new_status = self.STATUS_PENDING

        sale = self.group and self.group.sale

        if sale and sale.can_set_not_paid():
            sale.set_not_paid()
        self.status = self.STATUS_PENDING
        self.paid_date = None
        self.paid_value = None

    def pay(self, paid_date=None, paid_value=None,
            source_account=None, destination_account=None,
            account_transaction_number=None):
        """Pay the current payment set its status as :obj:`.STATUS_PAID`

        If this payment belongs to a sale, and all other payments from the sale
        are paid then the sale will be set as paid.
        """
        if self.status != Payment.STATUS_PENDING:
            raise ValueError(_(u"This payment is already paid."))
        self._check_status(self.STATUS_PENDING, u'pay')

        paid_value = paid_value or (self.value - self.discount +
                                    self.interest)
        self.paid_value = paid_value
        self.paid_date = paid_date or TransactionTimestamp()
        self.status = self.STATUS_PAID

        if (self.is_separate_payment() or
            self.method.operation.create_transaction()):
            AccountTransaction.create_from_payment(
                self,
                code=account_transaction_number,
                source_account=source_account,
                destination_account=destination_account)

        sale = self.group and self.group.sale
        if sale:
            sale.create_commission(self)

            # When paying payments of a sale, check if the other payments are
            # paid. If they are, this means you can change the sale status to
            # paid as well.
            if sale.can_set_paid():
                sale.set_paid()

        if self.value == self.paid_value:
            msg = _(u"{method} payment with value {value:.2f} was paid").format(
                method=self.method.method_name,
                value=self.value)
        else:
            msg = _(u"{method} payment with value original value "
                    u"{original_value:.2f} was paid with value "
                    u"{value:.2f}").format(method=self.method.method_name,
                                           original_value=self.value,
                                           value=self.paid_value)
        Event.log(self.store, Event.TYPE_PAYMENT, msg.capitalize())

    def cancel(self, change_entry=None):
        """Cancel the payment, set it's status to :obj:`.STATUS_CANCELLED`
        """
        # TODO Check for till entries here and call cancel_till_entry if
        # it's possible. Bug 2598
        if not self.can_cancel():
            raise StoqlibError(_(u"Invalid status for cancel operation, "
                                 u"got %s") % self.status_str)

        if self.transaction:
            self.transaction.create_reverse()

        old_status = self.status
        self.status = self.STATUS_CANCELLED
        self.cancel_date = TransactionTimestamp()

        if change_entry is not None:
            change_entry.last_status = old_status
            change_entry.new_status = self.status

        msg = _(u"{method} payment with value {value:.2f} was cancelled").format(
            method=self.method.method_name,
            value=self.value)
        Event.log(self.store, Event.TYPE_PAYMENT, msg.capitalize())

    def change_due_date(self, new_due_date):
        """Changes the payment due date.
        :param new_due_date: The new due date for the payment.
        :rtype: datetime.date
        """
        if self.status in [Payment.STATUS_PAID, Payment.STATUS_CANCELLED]:
            raise StoqlibError(_(u"Invalid status for change_due_date operation, "
                                 u"got %s") % self.status_str)
        self.due_date = new_due_date

    def update_value(self, new_value):
        """Update the payment value.

        """
        self.value = new_value

    def can_cancel(self):
        return self.status in (Payment.STATUS_PREVIEW, Payment.STATUS_PENDING,
                               Payment.STATUS_PAID)

    def get_payable_value(self):
        """Returns the calculated payment value with the daily interest.

        Note that the payment group daily_interest must be between 0 and 100.

        :returns: the payable value
        """
        if self.status in [self.STATUS_PREVIEW, self.STATUS_CANCELLED]:
            return self.value
        if self.status in [self.STATUS_PAID, self.STATUS_REVIEWING,
                           self.STATUS_CONFIRMED]:
            return self.paid_value

        return self.value + self.get_interest()

    def get_penalty(self, date=None):
        """Calculate the penalty in an absolute value

        :param date: date of payment
        :returns: penalty
        :rtype: :class:`kiwi.currency.currency`
        """
        if date is None:
            date = localtoday().date()
        elif date < self.open_date.date():
            raise ValueError(_(u"Date can not be less then open date"))
        elif date > localtoday().date():
            raise ValueError(_(u"Date can not be greather then future date"))
        if not self.method.penalty:
            return currency(0)

        # Don't add penalty if we pay in time!
        if self.due_date.date() >= date:
            return currency(0)

        return currency(self.method.penalty / 100 * self.value)

    def get_interest(self, date=None, pay_penalty=True):
        """Calculate the interest in an absolute value

        :param date: date of payment
        :returns: interest
        :rtype: :class:`kiwi.currency.currency`
        """
        if date is None:
            date = localtoday().date()
        elif date < self.open_date.date():
            raise ValueError(_(u"Date can not be less then open date"))
        elif date > localtoday().date():
            raise ValueError(_(u"Date can not be greather then future date"))

        if not self.method.daily_interest:
            return currency(0)

        days = (date - self.due_date.date()).days
        if days <= 0:
            return currency(0)

        base_value = self.value + (pay_penalty and self.get_penalty(date=date))

        return currency(days * self.method.daily_interest / 100 * base_value)

    def has_commission(self):
        """Check if this |payment| already has a |commission|"""
        from stoqlib.domain.commission import Commission
        return self.store.find(Commission,
                               payment=self).any()

    def is_paid(self):
        """Check if the payment is paid.

        :returns: ``True`` if the payment is paid
        """
        return self.status == Payment.STATUS_PAID

    def is_pending(self):
        """Check if the payment is pending.

        :returns: ``True`` if the payment is pending
        """
        return self.status == Payment.STATUS_PENDING

    def is_preview(self):
        """Check if the payment is in preview state

        :returns: ``True`` if the payment is paid
        """
        return self.status == Payment.STATUS_PREVIEW

    def is_cancelled(self):
        """Check if the payment was cancelled.

        :returns: ``True`` if the payment was cancelled
        """
        return self.status == Payment.STATUS_CANCELLED

    def get_paid_date_string(self):
        """Get a paid date string

        :returns: the paid date string or PAID DATE if the payment isn't paid
        """
        if self.paid_date:
            return self.paid_date.date().strftime('%x')
        return _(u'NOT PAID')

    def get_open_date_string(self):
        """Get a open date string

        :returns: the open date string or empty string
        """
        if self.open_date:
            return self.open_date.date().strftime('%x')
        return u""

    def is_inpayment(self):
        """Find out if a payment is :obj:`incoming <.TYPE_IN>`

        :returns: ``True`` if it's incoming
        """
        return self.payment_type == self.TYPE_IN

    def is_outpayment(self):
        """Find out if a payment is :obj:`outgoing <.TYPE_OUT>`

        :returns: ``True`` if it's outgoing
        """
        return self.payment_type == self.TYPE_OUT

    def is_separate_payment(self):
        """Find out if this payment is created separately from a
        sale, purchase or renegotiation
        :returns: ``True`` if it's separate.
        """

        # FIXME: This is a hack, we should rather store a flag
        #        in the database that tells us how the payment was
        #        created.
        group = self.group
        if not group:
            # Should never happen
            return False

        if group.sale:
            return False
        elif group.purchase:
            return False
        elif group._renegotiation:
            return False

        return True

    def is_of_method(self, method_name):
        """Find out if the payment was made with a certain method

        :returns: ``True`` if it's a payment of that method
        """
        return self.method.method_name == method_name
示例#13
0
class OpticalWorkOrder(Domain):
    """This holds the necessary information to execute an work order for optical
    stores.

    This includes all the details present in the prescription.

    For reference:
    http://en.wikipedia.org/wiki/Eyeglass_prescription

    See http://en.wikipedia.org/wiki/Eyeglass_prescription#Abbreviations_and_terms
    for reference no the names used here.

    In some places, RE is used as a short for right eye, and LE for left eye
    """
    __storm_table__ = 'optical_work_order'

    #: Lens used in glasses
    LENS_TYPE_OPHTALMIC = u'ophtalmic'

    #: Contact lenses
    LENS_TYPE_CONTACT = u'contact'

    #: The frame for the lens is a closed ring
    FRAME_TYPE_CLOSED_RING = u'closed-ring'

    #: The frame uses a nylon string to hold the lenses.
    FRAME_TYPE_NYLON = u'nylon'

    #: The frame is made 3 pieces
    FRAME_TYPE_3_PIECES = u'3-pieces'

    lens_types = {
        LENS_TYPE_OPHTALMIC: _('Ophtalmic'),
        LENS_TYPE_CONTACT: _('Contact'),
    }

    frame_types = {
        # Translators: Aro fechado
        FRAME_TYPE_3_PIECES: _('Closed ring'),

        # Translators: Fio de nylon
        FRAME_TYPE_NYLON: _('Nylon String'),

        # Translators: 3 preças
        FRAME_TYPE_CLOSED_RING: _('3 pieces'),
    }

    work_order_id = IdCol(allow_none=False)
    work_order = Reference(work_order_id, 'WorkOrder.id')

    medic_id = IdCol()
    medic = Reference(medic_id, 'OpticalMedic.id')

    prescription_date = DateTimeCol()

    #: The name of the patient. Note that we already have the client of the work
    #: order, but the patient may be someone else (like the son, father,
    #: etc...). Just the name is enough
    patient = UnicodeCol()

    #: The type of the lens, Contact or Ophtalmic
    lens_type = EnumCol(default=LENS_TYPE_OPHTALMIC)

    #
    #   Frame
    #

    #: The type of the frame. One of OpticalWorkOrder.FRAME_TYPE_*
    frame_type = EnumCol(default=FRAME_TYPE_CLOSED_RING)

    #: The vertical frame measure
    frame_mva = DecimalCol(default=decimal.Decimal(0))

    #: The horizontal frame measure
    frame_mha = DecimalCol(default=decimal.Decimal(0))

    #: The diagonal frame measure
    frame_mda = DecimalCol(default=decimal.Decimal(0))

    #: The brige is the part of the frame between the two lenses, above the nose.
    frame_bridge = DecimalCol()

    #
    # Left eye distance vision
    #

    le_distance_spherical = DecimalCol(default=0)
    le_distance_cylindrical = DecimalCol(default=0)
    le_distance_axis = DecimalCol(default=0)
    le_distance_prism = DecimalCol(default=0)
    le_distance_base = DecimalCol(default=0)
    le_distance_height = DecimalCol(default=0)

    #: Pupil distance (DNP in pt_BR)
    le_distance_pd = DecimalCol(default=0)
    le_addition = DecimalCol(default=0)

    #
    # Left eye distance vision
    #
    le_near_spherical = DecimalCol(default=0)
    le_near_cylindrical = DecimalCol(default=0)
    le_near_axis = DecimalCol(default=0)

    #: Pupil distance (DNP in pt_BR)
    le_near_pd = DecimalCol(default=0)

    #
    # Right eye distance vision
    #

    re_distance_spherical = DecimalCol(default=0)
    re_distance_cylindrical = DecimalCol(default=0)
    re_distance_axis = DecimalCol(default=0)
    re_distance_prism = DecimalCol(default=0)
    re_distance_base = DecimalCol(default=0)
    re_distance_height = DecimalCol(default=0)

    #: Pupil distance (DNP in pt_BR)
    re_distance_pd = DecimalCol(default=0)
    re_addition = DecimalCol(default=0)

    #
    # Right eye near vision
    #
    re_near_spherical = DecimalCol(default=0)
    re_near_cylindrical = DecimalCol(default=0)
    re_near_axis = DecimalCol(default=0)

    #: Pupil distance (DNP in pt_BR)
    re_near_pd = DecimalCol(default=0)

    #
    # Class methods
    #

    @classmethod
    def find_by_work_order(cls, store, work_order):
        return store.find(cls, work_order_id=work_order.id).one()

    #
    # Properties
    #

    @property
    def frame_type_str(self):
        return self.frame_types.get(self.frame_type, '')

    @property
    def lens_type_str(self):
        return self.lens_types.get(self.lens_type, '')

    #
    # Public API
    #

    def can_create_purchase(self):
        work_order = self.work_order
        if work_order.status != WorkOrder.STATUS_WORK_IN_PROGRESS:
            return False

        if not work_order.sale:
            return False

        purchases = [i.purchase_item for i in work_order.get_items()]
        # If there are any item in this work order that was not purchased yet, then we
        # can still create a purchase
        return None in purchases

    def create_purchase(self, supplier, work_order_item, is_freebie,
                        branch: Branch, station: BranchStation,
                        user: LoginUser):
        """Create a purchase

        :param supplier: the |supplier| of that purchase
        :param work_order_item: The work order item that a purchase is being created
        for.
        :param is_freebie: indicates if the item is a freebie
        """
        sellable = work_order_item.sellable
        store = self.work_order.store
        purchase = PurchaseOrder(store=store,
                                 branch=branch,
                                 station=station,
                                 status=PurchaseOrder.ORDER_PENDING,
                                 supplier=supplier,
                                 responsible=user,
                                 work_order=self.work_order)
        if is_freebie:
            purchase.notes = _(
                'The product %s is a freebie') % sellable.description
            # FIXME We may want the cost 0, but as it is we wont be able to
            # receive this purchase without changing the receiving. We must
            # evaluate the consequences of changing the receiving a little bit
            # further in order to change that behavior.
            cost = decimal.Decimal('0.01')
        else:
            psi = ProductSupplierInfo.find_by_product_supplier(
                store, sellable.product, supplier, branch)
            cost = psi.base_cost if psi else sellable.cost

        # Add the sellable to the purchase
        purchase_item = purchase.add_item(sellable,
                                          quantity=work_order_item.quantity,
                                          cost=cost)
        work_order_item.purchase_item = purchase_item

        purchase.confirm(user)
        return purchase

    def can_receive_purchase(self, purchase):
        work_order = self.work_order
        if not work_order.status == WorkOrder.STATUS_WORK_FINISHED:
            return False

        # XXX Lets assume that there is only on purchase
        return purchase and purchase.status == PurchaseOrder.ORDER_CONFIRMED

    def receive_purchase(self,
                         purchase_order: PurchaseOrder,
                         station: BranchStation,
                         user: LoginUser,
                         reserve=False):
        receiving = purchase_order.create_receiving_order(station)
        receiving.confirm(user)
        if reserve:
            self.reserve_products(purchase_order, user)

    def reserve_products(self, purchase_order, user: LoginUser):
        for item in self.work_order.get_items():
            if not item.purchase_item:
                continue
            sale_item = item.sale_item
            to_reserve = sale_item.quantity - sale_item.quantity_decreased
            if to_reserve > 0:
                sale_item.reserve(user, quantize(to_reserve))

    def copy(self, target):
        """Make a copy of self into a target |work_order|

        :param target: a |work_order|
        """
        props = [
            'lens_type', 'le_distance_spherical', 'le_distance_cylindrical',
            'le_distance_axis', 'le_distance_prism', 'le_distance_base',
            'le_distance_height', 'le_distance_pd', 'le_addition',
            'le_near_spherical', 'le_near_cylindrical', 'le_near_axis',
            'le_near_pd', 're_distance_spherical', 're_distance_cylindrical',
            're_distance_axis', 're_distance_prism', 're_distance_base',
            're_distance_height', 're_distance_pd', 're_addition',
            're_near_spherical', 're_near_cylindrical', 're_near_axis',
            're_near_pd'
        ]

        for prop in props:
            value = getattr(self, prop)
            setattr(target, prop, value)
示例#14
0
文件: loan.py 项目: victornovy/stoq
class Loan(Domain):
    """
    A loan is a collection of |sellable| that is being loaned
    to a |client|, the items are expected to be either be
    returned to stock or sold via a |sale|.

    A loan that can hold a set of :class:`loan items <LoanItem>`

    See also:
    `schema <http://doc.stoq.com.br/schema/tables/loan.html>`__
    `manual <http://doc.stoq.com.br/manual/loan.html>`__
    """

    __storm_table__ = 'loan'

    #: The request for a loan has been added to the system,
    #: we know which of the items the client wishes to loan,
    #: it's not defined if the client has actually picked up
    #: the items.
    STATUS_OPEN = u'open'

    #: All the products or other sellable items have been
    #: returned and are available in stock.
    STATUS_CLOSED = u'closed'

    #: The loan is cancelled and all the products or other sellable items have
    #: been returned and are available in stock.
    STATUS_CANCELLED = u'cancelled'

    # FIXME: This is missing a few states,
    #        STATUS_LOANED: stock is completely synchronized
    statuses = collections.OrderedDict([
        (STATUS_OPEN, _(u'Opened')),
        (STATUS_CLOSED, _(u'Closed')),
        (STATUS_CANCELLED, _(u'Cancelled')),
    ])

    #: A numeric identifier for this object. This value should be used instead of
    #: :obj:`Domain.id` when displaying a numerical representation of this object to
    #: the user, in dialogs, lists, reports and such.
    identifier = IdentifierCol()

    #: status of the loan
    status = EnumCol(allow_none=False, default=STATUS_OPEN)

    #: notes related to this loan.
    notes = UnicodeCol(default=u'')

    #: date loan was opened
    open_date = DateTimeCol(default_factory=localnow)

    #: date loan was closed
    close_date = DateTimeCol(default=None)

    #: loan expires on this date, we expect the items to
    #: to be returned by this date
    expire_date = DateTimeCol(default=None)

    #: the date the loan was cancelled
    cancel_date = DateTimeCol(default=None)

    removed_by = UnicodeCol(default=u'')

    #: the reason the loan was cancelled
    cancel_reason = UnicodeCol()

    #: branch where the loan was done
    branch_id = IdCol()
    branch = Reference(branch_id, 'Branch.id')

    #: :class:`user <stoqlib.domain.person.LoginUser>` of the system
    #: that made the loan
    # FIXME: Should probably be a SalesPerson, we can find the
    #        LoginUser via te.user_id
    responsible_id = IdCol()
    responsible = Reference(responsible_id, 'LoginUser.id')

    #: client that loaned the items
    client_id = IdCol(default=None)
    client = Reference(client_id, 'Client.id')

    client_category_id = IdCol(default=None)

    #: the |clientcategory| used for price determination.
    client_category = Reference(client_category_id, 'ClientCategory.id')

    #: a list of all items loaned in this loan
    loaned_items = ReferenceSet('id', 'LoanItem.loan_id')

    #: |payments| generated by this loan
    payments = None

    #: |transporter| used in loan
    transporter = None

    invoice_id = IdCol()

    #: The |invoice| generated by the loan
    invoice = Reference(invoice_id, 'Invoice.id')

    #: The responsible for cancelling the loan. At the moment, the
    #: |loginuser| that cancelled the loan
    cancel_responsible_id = IdCol()
    cancel_responsible = Reference(cancel_responsible_id, 'LoginUser.id')

    def __init__(self, store=None, **kwargs):
        kwargs['invoice'] = Invoice(store=store, invoice_type=Invoice.TYPE_OUT)
        super(Loan, self).__init__(store=store, **kwargs)

    #
    # Classmethods
    #

    @classmethod
    def get_status_name(cls, status):
        if not status in cls.statuses:
            raise DatabaseInconsistency(_("Invalid status %d") % status)
        return cls.statuses[status]

    #
    # IContainer implementation
    #

    def add_item(self, loan_item):
        assert not loan_item.loan
        loan_item.loan = self

    def get_items(self):
        return self.store.find(LoanItem, loan=self)

    def remove_item(self, loan_item):
        loan_item.loan = None
        self.store.maybe_remove(loan_item)

    #
    # IInvoice implementation
    #

    @property
    def comments(self):
        return [Settable(comment=self.notes)]

    @property
    def discount_value(self):
        discount = currency(0)
        for item in self.get_items():
            if item.price > item.sellable.base_price:
                continue
            discount += item.sellable.base_price - item.price
        return discount

    @property
    def invoice_subtotal(self):
        return self.get_sale_base_subtotal()

    @property
    def invoice_total(self):
        return self.get_total_amount()

    @property
    def recipient(self):
        return self.client.person

    @property
    def operation_nature(self):
        # TODO: Save the operation nature in new loan table field.
        return _(u"Loan")

    #
    # Public API
    #

    def add_sellable(self, sellable, quantity=1, price=None, batch=None):
        """Adds a new sellable item to a loan

        :param sellable: the |sellable|
        :param quantity: quantity to add, defaults to 1
        :param price: optional, the price, it not set the price
          from the sellable will be used
        :param batch: the |batch| this sellable comes from if the sellable is a
          storable. Should be ``None`` if it is not a storable or if the storable
          does not have batches.
        """
        self.validate_batch(batch, sellable=sellable)
        price = price or sellable.price
        base_price = sellable.price
        return LoanItem(store=self.store,
                        quantity=quantity,
                        loan=self,
                        sellable=sellable,
                        batch=batch,
                        price=price,
                        base_price=base_price)

    def get_available_discount_for_items(self, user=None, exclude_item=None):
        """Get available discount for items in this loan

        The available items discount is the total discount not used
        by items in this sale. For instance, if we have 2 products
        with a price of 100 and they can have 10% of discount, we have
        20 of discount available. If one of those products price
        is set to 98, that is, using 2 of it's discount, the available
        discount is now 18.

        :param user: passed to
            :meth:`stoqlib.domain.sellable.Sellable.get_maximum_discount`
            together with :obj:`.client_category` to check for the max
            discount for sellables on this sale
        :param exclude_item: a |saleitem| to exclude from the calculations.
            Useful if you are trying to get some extra discount for that
            item and you don't want it's discount to be considered here
        :returns: the available discount
        """
        available_discount = currency(0)
        used_discount = currency(0)

        for item in self.get_items():
            if item == exclude_item:
                continue
            # Don't put surcharges on the discount, or it can end up negative
            if item.price > item.sellable.base_price:
                continue

            used_discount += item.sellable.base_price - item.price
            max_discount = item.sellable.get_maximum_discount(
                category=self.client_category, user=user) / 100
            available_discount += item.base_price * max_discount

        return available_discount - used_discount

    def set_items_discount(self, discount):
        """Apply discount on this sale's items

        :param decimal.Decimal discount: the discount to be applied
            as a percentage, e.g. 10.0, 22.5
        """
        new_total = currency(0)

        item = None
        candidate = None
        for item in self.get_items():
            item.set_discount(discount)
            new_total += quantize(item.price * item.quantity)
            if item.quantity == 1:
                candidate = item

        # Since we apply the discount percentage above, items can generate a
        # 3rd decimal place, that will be rounded to the 2nd, making the value
        # differ. Find that difference and apply it to a sale item, preferable
        # to one with a quantity of 1 since, for instance, applying +0,1 to an
        # item with a quantity of 4 would make it's total +0,4 (+0,3 extra than
        # we are trying to adjust here).
        discount_value = (self.get_sale_base_subtotal() * discount) / 100
        diff = new_total - self.get_sale_base_subtotal() + discount_value
        if diff:
            item = candidate or item
            item.price -= diff

    #
    # Accessors
    #

    def get_total_amount(self):
        """
        Fetches the total value of the loan, that is to be paid by
        the client.

        It can be calculated as::

            Sale total = Sum(product and service prices) + surcharge +
                             interest - discount

        :returns: the total value
        """
        return currency(self.get_items().sum(
            Round(LoanItem.price * LoanItem.quantity, DECIMAL_PRECISION)) or 0)

    def get_client_name(self):
        if self.client:
            return self.client.person.name
        return u''

    def get_branch_name(self):
        if self.branch:
            return self.branch.get_description()
        return u''

    def get_responsible_name(self):
        return self.responsible.person.name

    #
    # Public API
    #

    def sync_stock(self):
        """Synchronizes the stock of *self*'s :class:`loan items <LoanItem>`

        Just a shortcut to call :meth:`LoanItem.sync_stock` of all of
        *self*'s :class:`loan items <LoanItem>` instead of having
        to do that one by one.
        """
        for loan_item in self.get_items():
            # No need to sync stock for products that dont need.
            if not loan_item.sellable.product.manage_stock:
                continue
            loan_item.sync_stock()

    def can_close(self):
        """Checks if the loan can be closed. A loan can be closed if it is
        opened and all the items have been returned or sold.
        :returns: True if the loan can be closed, False otherwise.
        """
        if self.status != Loan.STATUS_OPEN:
            return False
        for item in self.get_items():
            if item.sale_quantity + item.return_quantity != item.quantity:
                return False
        return True

    def get_sale_base_subtotal(self):
        """Get the base subtotal of items

        Just a helper that, unlike :meth:`.get_sale_subtotal`, will
        return the total based on item's base price.

        :returns: the base subtotal
        """
        subtotal = self.get_items().sum(
            Round(LoanItem.quantity * LoanItem.base_price, DECIMAL_PRECISION))
        return currency(subtotal)

    def close(self):
        """Closes the loan. At this point, all the loan items have been
        returned to stock or sold."""
        assert self.can_close()
        self.close_date = localnow()
        self.status = Loan.STATUS_CLOSED

    def confirm(self):
        # Save the operation nature and branch in Invoice table.
        self.invoice.operation_nature = self.operation_nature
        self.invoice.branch = self.branch
        # Since there is no status change here and the event requires
        # the parameter, we use None
        old_status = None
        StockOperationConfirmedEvent.emit(self, old_status)
示例#15
0
class CardOperationCost(Domain):
    """The cost of a given operation on the |carddevice|

    The cost of an operation depend on the following parameters:

    * The |carddevice| that was used
    * The |creditprovider| of the card
    * The type of the card (ie, credit, debit, etc..)
    * The number of installments
    """

    __storm_table__ = 'card_operation_cost'

    device_id = IdCol(default=None)

    #: The card device used to charge the client
    device = Reference(device_id, 'CardPaymentDevice.id')

    provider_id = IdCol(default=None)

    #: The credit provider of the card
    provider = Reference(provider_id, 'CreditProvider.id')

    # One of CreditCardData.TYPE_*
    card_type = EnumCol(allow_none=False, default=u'credit')

    #: When paid in installments, this fee and fare will only apply if the
    #: installments number is in the range defined by installment_start and
    #: installment_end
    installment_start = IntCol(default=1)
    #: See :obj:`.installment_start`
    installment_end = IntCol(default=1)

    #: How many days the |creditprovider| takes to transfer the shop the money for
    #: one |payment|
    payment_days = IntCol(default=30)

    #: The percentage of each |payment| value that will be charged by the
    #: |creditprovider|
    fee = PercentCol(default=0)

    #: This is a fixed currency value that is charged for each |payment|
    fare = PriceCol(default=0)

    #
    #   Properties
    #

    def get_description(self):
        type_desc = CreditCardData.short_desc[self.card_type]
        desc = u'%s %s' % (self.provider.short_name, type_desc)
        return desc

    @property
    def installment_range_as_string(self):
        """A string representation of the installments range
        """
        inst_type = [
            CreditCardData.TYPE_CREDIT_INSTALLMENTS_STORE,
            CreditCardData.TYPE_CREDIT_INSTALLMENTS_PROVIDER
        ]
        if self.card_type not in inst_type:
            return u''
        return _(u'From %d to %d') % (self.installment_start,
                                      self.installment_end)

    @classmethod
    def delete_from_device(cls, device_id, store):
        store.execute(Delete(cls.device_id == device_id, cls))

    @classmethod
    def validate_installment_range(cls,
                                   device,
                                   provider,
                                   card_type,
                                   start,
                                   end,
                                   store,
                                   ignore=None):
        """Checks if a given range is not conflicting with any other operation cost

        :param device: the |carddevice| that will be used
        :param provider: the |creditprovider| related to the cost
        :param card_type: the car type (credit, debit, etc...)
        :param start: the start of the installment range
        :param end: the end of the installment range
        :param ignore: if not ``None``, should be an id of a |cardcost| that
          should be ignored in the query (ie, the object currently being
          edited).

        :returns: ``True`` the range is valid for the given parameters. A valid
          range means that for every possible installment value in the given
          range, there are no other |cardcost| objects that matches the
          installment value.
        """
        assert start <= end, (start, end)

        # For each possible value in the range, we want to see if there is any
        # other operation cost that already include this value.
        # range() end is non inclusive, hence the +1
        exprs = []
        for i in range(start, end + 1):
            # start <= i <= end
            inst_query = And(CardOperationCost.installment_start <= i,
                             i <= CardOperationCost.installment_end)
            exprs.append(inst_query)

        query = And(CardOperationCost.device == device,
                    CardOperationCost.card_type == card_type,
                    CardOperationCost.provider == provider, Or(*exprs))

        if ignore is not None:
            query = And(query, CardOperationCost.id != ignore)

        # For this range to be valid, there should be object matching the
        # criteria above
        return store.find(cls, query).is_empty()
示例#16
0
class OpticalPatientHistory(Domain):

    __storm_table__ = 'optical_patient_history'

    #: Never used lenses before
    TYPE_FIRST_USER = u'first-user'

    #: Is currently a user
    TYPE_SECOND_USER = u'second-user'

    #: Has used lenses before, but stopped
    TYPE_EX_USER = u'ex-user'

    user_types = collections.OrderedDict([
        (TYPE_FIRST_USER, _('First User')),
        (TYPE_SECOND_USER, _('Second User')),
        (TYPE_EX_USER, _('Ex-User')),
    ])

    create_date = DateTimeCol(default_factory=StatementTimestamp)

    client_id = IdCol(allow_none=False)
    #: The related client
    client = Reference(client_id, 'Client.id')

    responsible_id = IdCol(allow_none=False)
    #: The user that registred this information
    responsible = Reference(responsible_id, 'LoginUser.id')

    #
    #   Section 1: General questions
    #

    #: If the patient is a first time user for contact lenses or not.
    user_type = EnumCol(allow_none=False, default=TYPE_FIRST_USER)

    #: What is the occupation of the patient
    occupation = UnicodeCol()

    #: Details about the work environment (if it as air conditioning, dust,
    #: chemical products)
    work_environment = UnicodeCol()

    #
    #   First time user
    #

    #: If the patient has ever tested any contact lenses
    has_tested = UnicodeCol()

    #: What brands the patient has tested
    tested_brand = UnicodeCol()

    #: If previous tests irritated the eye
    eye_irritation = UnicodeCol()

    #: What is the main purpose for using contact lenses?
    purpose_of_use = UnicodeCol()

    #: How many hours per day the patient intends to use the contact lenses
    intended_hour_usage = UnicodeCol()

    #
    #   Second time / ex user
    #

    #: Previous brand of the client.
    previous_brand = UnicodeCol()

    #: What the previous brand felt like
    previous_feeling = UnicodeCol()

    #: Have ever had any cornea issues
    cornea_issues = UnicodeCol()

    #: How many hours per day the client used the lenses
    hours_per_day_usage = UnicodeCol()

    #
    #   Second time user
    #

    #: For how long is a user
    user_since = UnicodeCol()

    #: Bring the previous lenses?
    has_previous_lenses = UnicodeCol()

    #: Previous lenses observations
    previous_lenses_notes = UnicodeCol()

    #
    #   Ex User
    #

    #: How long since the last use.
    last_use = UnicodeCol()

    #: why stopped using
    stop_reason = UnicodeCol()

    #: Did frequent removal of proteins?
    protein_removal = UnicodeCol()

    #: What cleaning product used?
    cleaning_product = UnicodeCol()

    #: Free notes.
    history_notes = UnicodeCol()

    #
    #   Section 2: Adaptation test
    #

    #: If the patient ever had eye injuries
    eye_injury = UnicodeCol()

    #: Any kind of recent pathology, like pink-eye
    recent_pathology = UnicodeCol()

    #: Is currently using eye drops
    using_eye_drops = UnicodeCol()

    #: Does the patient have health problems
    health_problems = UnicodeCol()

    #: Is the patient is using any kind of medicament
    using_medicament = UnicodeCol()

    #: Does the patient family has any health problems
    family_health_problems = UnicodeCol()

    #: How the eyes feel at the end of the day (burn, itch, etc...)
    end_of_day_feeling = UnicodeCol()

    #: Free notes.
    adaptation_notes = UnicodeCol()

    @property
    def responsible_name(self):
        return self.responsible.get_description()
示例#17
0
class CreditCardData(Domain):
    """Stores CreditCard specific state related to a payment

    This state include:

    * The type of the card used
    * The |creditprovider| of the card
    * The |carddevice| used to charge the user
    * The costs (fare an fee) that the shop was charged from the
      |creditprovider| for this payment
    """

    __storm_table__ = 'credit_card_data'

    #: Credit card payment, single installment
    TYPE_CREDIT = u'credit'

    #: Debit card payment
    TYPE_DEBIT = u'debit'

    #: Credit card payment with two or more installments.
    #: In this case, the shop is responsible for the installments, and will
    #: receive one payment each month
    TYPE_CREDIT_INSTALLMENTS_STORE = u'credit-inst-store'

    #: Credit card payment with two or more installments.
    #: In this case, the credit provider is responsible for the installments and
    #: the shop will receive the value in only one payment
    TYPE_CREDIT_INSTALLMENTS_PROVIDER = u'credit-inst-provider'

    #: This is a debit card payment, but will be charged on a pre-defined future
    #: date. Not completely supported in Stoq yet
    TYPE_DEBIT_PRE_DATED = u'debit-pre-dated'

    #: This is a voucher card payment.
    TYPE_VOUCHER = 'voucher'

    types = collections.OrderedDict([
        (TYPE_CREDIT, _(u'Credit Card')),
        (TYPE_DEBIT, _(u'Debit Card')),
        (TYPE_CREDIT_INSTALLMENTS_STORE, _(u'Credit Card Installments Store')),
        (TYPE_CREDIT_INSTALLMENTS_PROVIDER,
         _(u'Credit Card Installments '
           u'Provider')),
        (TYPE_DEBIT_PRE_DATED, _(u'Debit Card Pre-dated')),
        (TYPE_VOUCHER, _(u'Voucher')),
    ])

    short_desc = collections.OrderedDict([
        (TYPE_CREDIT, _(u'Credit')),
        (TYPE_DEBIT, _(u'Debit')),
        # translators, This is 'Credit Card Installments Store, but should be
        # abbreviated to fit a small space
        (TYPE_CREDIT_INSTALLMENTS_STORE, _(u'Credit Inst. Store')),
        # translators, This is 'Credit Card Installments Provider, but should be
        # abbreviated to fit a small space
        (TYPE_CREDIT_INSTALLMENTS_PROVIDER, _(u'Credit Inst. Provider')),
        (TYPE_DEBIT_PRE_DATED, _(u'Debit Pre-dated')),
        (TYPE_VOUCHER, _(u'Voucher')),
    ])

    payment_id = IdCol()

    #: the |payment| this information is about
    payment = Reference(payment_id, 'Payment.id')

    card_type = EnumCol(default=TYPE_CREDIT)

    provider_id = IdCol(default=None)

    #: the |creditprovider| for this class
    provider = Reference(provider_id, 'CreditProvider.id')

    device_id = IdCol(default=None)
    #: the |carddevice| used for the payment
    #: If the |carddevice| is excluded in the future, this value will be set to null.
    device = Reference(device_id, 'CardPaymentDevice.id')

    #: the fixed value that will be charged for the related |payment|
    fare = PriceCol(default=0)

    #: the percentage of the value that will be charged for the related |payment|
    fee = PercentCol(default=0)

    #: the fee that will be charged based on the :obj:`.fee`
    fee_value = PriceCol(default=0)

    #: this is used by the tef plugin.
    nsu = UnicodeCol(default=None)

    #: The authorization number returned by the payment device. This will be
    #: returned automatically by the tef plugin, but needs to be manually
    #: informed if not using the plugin.
    auth = UnicodeCol(default=None)

    #: the number of installments, used by the tef plugin
    installments = IntCol(default=1)

    #: the value of the first installment (when installments > 1), used by the
    #: tef plugin
    entrance_value = PriceCol(default=0)

    def is_credit(self):
        return self.card_type in (self.TYPE_CREDIT,
                                  self.TYPE_CREDIT_INSTALLMENTS_STORE,
                                  self.TYPE_CREDIT_INSTALLMENTS_PROVIDER)

    def is_debit(self):
        return self.card_type in (self.TYPE_DEBIT, self.TYPE_DEBIT_PRE_DATED)

    def is_voucher(self):
        return self.card_type == self.TYPE_VOUCHER

    def get_description(self):
        type_desc = CreditCardData.short_desc[self.card_type]
        desc = u'%s %s' % (self.provider.short_name, type_desc)
        return desc

    def update_card_data(self, device, provider, card_type, installments):
        """Creates a new |cardcost| based on |carddevice|, |creditprovider|,
        card_type and installments to update |creditcarddata|.

        :param device: the payment device
        :param provider: the credit provider
        :param card_type: the type of card, may be either credit or debit
        :param installments: the number of installments
        """

        if device is None or not isinstance(device, CardPaymentDevice):
            raise TypeError("device must be CardPaymentDevice instance and "
                            "not %r" % (device, ))
        if provider is None or not isinstance(provider, CreditProvider):
            raise TypeError("provider must be CreditProvider instance and"
                            " not %r" % (provider, ))
        if card_type is None:
            raise ValueError("card_type cannot be None")
        if installments is None:
            raise ValueError("installments cannot be None")

        cost = device.get_provider_cost(provider=provider,
                                        card_type=card_type,
                                        installments=installments)
        self.device = device
        self.provider = provider
        self.card_type = card_type

        self.fee = cost.fee if cost else 0
        self.fare = cost.fare if cost else 0

        self.fee_value = self.fee * self.payment.value / 100
示例#18
0
class StockDecrease(Domain):
    """Stock Decrease object implementation.

    Stock Decrease is when the user need to manually decrease the stock
    quantity, for some reason that is not a sale, transfer or other cases
    already covered in stoqlib.
    """

    __storm_table__ = 'stock_decrease'

    #: Stock Decrease is still being edited
    STATUS_INITIAL = u'initial'

    #: Stock Decrease is confirmed and stock items have been decreased.
    STATUS_CONFIRMED = u'confirmed'

    statuses = {
        STATUS_INITIAL: _(u'Opened'),
        STATUS_CONFIRMED: _(u'Confirmed')
    }

    #: A numeric identifier for this object. This value should be used instead of
    #: :obj:`Domain.id` when displaying a numerical representation of this object to
    #: the user, in dialogs, lists, reports and such.
    identifier = IdentifierCol()

    #: status of the sale
    status = EnumCol(allow_none=False, default=STATUS_INITIAL)

    reason = UnicodeCol(default=u'')

    #: Some optional additional information related to this sale.
    notes = UnicodeCol(default=u'')

    #: the date sale was created
    confirm_date = DateTimeCol(default_factory=localnow)

    responsible_id = IdCol()

    #: who should be blamed for this
    responsible = Reference(responsible_id, 'LoginUser.id')

    removed_by_id = IdCol()

    removed_by = Reference(removed_by_id, 'Employee.id')

    branch_id = IdCol()

    #: branch where the sale was done
    branch = Reference(branch_id, 'Branch.id')

    #: person who is receiving
    person_id = IdCol()

    person = Reference(person_id, 'Person.id')

    #: the choosen CFOP
    cfop_id = IdCol()

    cfop = Reference(cfop_id, 'CfopData.id')

    # FIXME: Duplicated from Invoice. Remove it
    #: The invoice number of the stock decrease
    invoice_number = IntCol()

    #: the payment group related to this stock decrease
    group_id = IdCol()

    group = Reference(group_id, 'PaymentGroup.id')

    cost_center_id = IdCol()

    #: the |costcenter| that the cost of the products decreased in this stock
    #: decrease should be accounted for. When confirming a stock decrease with
    #: a |costcenter| set, a |costcenterentry| will be created for each product
    #: decreased.
    cost_center = Reference(cost_center_id, 'CostCenter.id')

    #: |transporter| used in stock decrease
    transporter = None

    invoice_id = IdCol()

    #: The |invoice| generated by the stock decrease
    invoice = Reference(invoice_id, 'Invoice.id')

    def __init__(self, store=None, **kwargs):
        kwargs['invoice'] = Invoice(store=store, invoice_type=Invoice.TYPE_OUT)
        super(StockDecrease, self).__init__(store=store, **kwargs)

    #
    # IInvoice implementation
    #

    @property
    def comments(self):
        return self.reason

    @property
    def discount_value(self):
        return currency(0)

    @property
    def invoice_subtotal(self):
        return currency(self.get_total_cost())

    @property
    def invoice_total(self):
        return currency(self.get_total_cost())

    @property
    def payments(self):
        if self.group:
            return self.group.get_valid_payments().order_by(Payment.open_date)
        return None

    @property
    def recipient(self):
        return self.person

    @property
    def operation_nature(self):
        # TODO: Save the operation nature in new loan table field.
        return _(u"Stock decrease")

    #
    # Classmethods
    #

    @classmethod
    def get_status_name(cls, status):
        if not status in cls.statuses:
            raise DatabaseInconsistency(_(u"Invalid status %d") % status)
        return cls.statuses[status]

    def add_item(self, item):
        assert not item.stock_decrease
        item.stock_decrease = self

    def get_items(self):
        return self.store.find(StockDecreaseItem, stock_decrease=self)

    def remove_item(self, item):
        item.stock_decrease = None
        self.store.maybe_remove(item)

    # Status

    def can_confirm(self):
        """Only stock decreases with status equal to INITIAL can be confirmed

        :returns: ``True`` if the stock decrease can be confirmed, otherwise ``False``
        """
        return self.status == StockDecrease.STATUS_INITIAL

    def confirm(self):
        """Confirms the stock decrease

        """
        assert self.can_confirm()
        assert self.branch

        store = self.store
        branch = self.branch
        for item in self.get_items():
            if item.sellable.product:
                ProductHistory.add_decreased_item(store, branch, item)
            item.decrease(branch)

        self.status = StockDecrease.STATUS_CONFIRMED

        # Save the invoice number, operation_nature and branch in Invoice Table
        self.invoice.invoice_number = self.invoice_number
        self.invoice.operation_nature = self.operation_nature
        self.invoice.branch = branch

        if self.group:
            self.group.confirm()

    #
    # Accessors
    #

    def get_branch_name(self):
        return self.branch.get_description()

    def get_responsible_name(self):
        return self.responsible.get_description()

    def get_removed_by_name(self):
        if not self.removed_by:
            return u''

        return self.removed_by.get_description()

    def get_total_items_removed(self):
        return sum([item.quantity for item in self.get_items()], 0)

    def get_cfop_description(self):
        return self.cfop.get_description()

    def get_total_cost(self):
        return self.get_items().sum(StockDecreaseItem.cost *
                                    StockDecreaseItem.quantity)

    # Other methods

    def add_sellable(self, sellable, cost=None, quantity=1, batch=None):
        """Adds a new sellable item to a stock decrease

        :param sellable: the |sellable|
        :param cost: the cost for the decrease. If ``None``, sellable.cost
            will be used instead
        :param quantity: quantity to add, defaults to ``1``
        :param batch: the |batch| this sellable comes from, if the sellable is a
          storable. Should be ``None`` if it is not a storable or if the storable
          does not have batches.
        """
        self.validate_batch(batch, sellable=sellable)
        if cost is None:
            cost = sellable.cost

        return StockDecreaseItem(store=self.store,
                                 quantity=quantity,
                                 stock_decrease=self,
                                 sellable=sellable,
                                 batch=batch,
                                 cost=cost)