Пример #1
0
    def deposit(self, deposit_amount):
        '''
        Deposing money on the account, writes to a json file for specific user. Checks for type validations.
        :param deposit_amount: Amount to deposit
        :return:None
        '''
        try:
            deposit_amount = float(deposit_amount)
            if deposit_amount < 0:
                transaction_description = "Deposit failed - Amount incorrect."
                transaction = Transaction(self, datetime.datetime.now(),
                                          "deposit", self.balance,
                                          self.balance, "failed",
                                          transaction_description)
                self.transaction_list.append(transaction._to_dict())
                return False
        except ValueError:
            return False

        balance_before = self.balance
        self.balance += deposit_amount
        transaction_description = "Deposit succeeded."
        transaction = Transaction(self, datetime.datetime.now(), "deposit",
                                  balance_before, self.balance, "succeeded",
                                  transaction_description)
        self.transaction_list.append(transaction._to_dict())
        return True
Пример #2
0
    def setUp(self):
        self.company_1 = Company("RailScot")
        self.tag_1 = Tag("travel")
        self.company_2 = Company("Pilot Beer")
        self.tag_2 = Tag("food")

        self.transaction_1 = Transaction(10.00, self.company_1, self.tag_1)
        self.transaction_2 = Transaction(6.50, self.company_2, self.tag_2)
Пример #3
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    def withdraw(self, withdraw_amount):

        try:
            withdraw_amount = float(withdraw_amount)
            if withdraw_amount < 0:
                transaction_description = "Withdrawal failed - Amount incorrect."
                transaction = Transaction(self, datetime.datetime.now(),
                                          "withdrawal", self.balance,
                                          self.balance, "failed",
                                          transaction_description)
                self.transaction_list.append(transaction._to_dict())
                return False
        except ValueError:
            return False

        if self.balance - withdraw_amount - self.fees._get_fee(
                "withdraw_fee") > 0:
            balance_before = self.balance
            self.balance -= withdraw_amount
            transaction_description = "Withdrawal succeeded."
            transaction = Transaction(self, datetime.datetime.now(),
                                      "withdrawal", balance_before,
                                      self.balance, "succeeded",
                                      transaction_description)
            self.transaction_list.append(transaction._to_dict())

            self.fees._charge_fee("withdraw_fee")
            return True
        elif self.balance - withdraw_amount - self.fees._get_fee("overdraft_fee") < 0 and self.balance - withdraw_amount - self.fees._get_fee("overdraft_fee") > self.__overdraft\
                or self.balance - withdraw_amount - self.fees._get_fee("withdraw_fee")  and self.balance - withdraw_amount - self.fees._get_fee("withdraw_fee") > self.__overdraft < 0:
            balance_before = self.balance
            self.balance -= withdraw_amount
            transaction_description = "Withdrawal succeeded."
            transaction = Transaction(self, datetime.datetime.now(),
                                      "withdrawal", balance_before,
                                      self.balance, "success",
                                      transaction_description)
            self.transaction_list.append(transaction._to_dict())

            self.fees._charge_fee("overdraft_fee")
            return True
        else:
            transaction_description = "Withdrawal failed - Balance not enough."
            transaction = Transaction(self, datetime.datetime.now(),
                                      "withdrawal", self.balance, self.balance,
                                      "failed", transaction_description)
            self.transaction_list.append(transaction._to_dict())
            return False
Пример #4
0
def create_transaction():
    tag = tag_repository.select(request.form["tag_id"])
    merchant = merchant_repository.select(request.form["merchant_id"])
    amount = request.form["amount"]
    new_transaction = Transaction(tag, merchant, amount)
    transaction_repository.save(new_transaction)
    return redirect("/transactions")
Пример #5
0
def create(image_id):
    data = request.form
    image = Image.get_by_id(image_id)

    result = create_transaction(data.get("amount"), data.get("payment_method_nonce"))
    print(type(result))
    if type(result) == SuccessfulResult:
        new_transaction = Transaction(amount=data.get("amount"), image=image, user_id=current_user.id)
        if new_transaction.save():

            # If want to use mailgun api
            # from app import app
            # requests.post(
            #   "https://api.mailgun.net/v3/<YOUR_DOMAIN_NAME>/messages",
            #   auth=("api", app.config.get("MAILGUN_API") ),
            #   data={"from": "Mailgun Sandbox <YOUR_DOMAIN_NAME>",
            #     "to": "Your Name <DOMAIN_EMAIL>",
            #     "subject": "Hello",
            #     "text": "Successfully donated"})

            flash("Transactions successfull", "success")
            return redirect(url_for("users.show", username=image.user.username ))
        else:
            flash("Could not save transaction", "danger")
            return redirect(url_for("users.show", username=image.user.username )) 
    else:
        flash("Could not create braintree transaction", "danger")
        return redirect(url_for("users.show", username=image.user.username )) 
Пример #6
0
    def mine_block(self):
        proof_of_work = self.get_proof_of_work()
        mining_reward_transaction = Transaction(MINING_SENDER,
                                                self.__node_pub_key,
                                                MINING_REWARD, None)
        self.__outstanding_transactions.append(mining_reward_transaction)

        new_block = Block(
            hash_block(self.get_last_block()),
            int(self.get_last_block().index) + 1,
            self.__outstanding_transactions,
            proof_of_work,
        )
        self.__chain.append(new_block)

        # Check to see if any outstanding transactions have been tampered with after being saved
        for txn in self.__outstanding_transactions:
            if not Verification.verify_transaction(txn, self.get_balance):
                return False

        if Verification.verify_blockchain(self.__chain):
            global participants
            self.__outstanding_transactions = []
            participants[self.__node_pub_key] = True
            self.save_data()
            return True

        self.__chain.pop()
        self.__outstanding_transactions.pop()
        return False
Пример #7
0
 def generate_json_file_structure(cls, customer) -> Dict:
     """
     :param customer: Take customer object
     :return: dictionary of Transaction Export model
     """
     transaction = Transaction(customer)
     return TransactionExport(transaction).to_export()
Пример #8
0
def make_purchase(symbol, quantity, buyerId):
    '''make purchase or sale of stocks. 
       If quantity is negative this function becomes a sale instead of purchase.
       RETURNS String: contains errors. empty if no errors occur.'''
    print("quantity")
    print(quantity)
    symbol = symbol.upper()
    quote = get_stock(symbol)
    quantity = int(quantity)
    if quote.error:
        return quote.error
    if quantity > 0:
        error = buy_stocks(quantity, buyerId, quote.latestPrice)
    else:
        error = sell_stocks(quantity, buyerId, quote.latestPrice, symbol)
    if error:
        return error

    new_purchase = Transaction()
    new_purchase.symbol = symbol
    new_purchase.quantity = quantity
    new_purchase.transactionPrice = quote.latestPrice
    new_purchase.buyerId = buyerId
    db.session.add(new_purchase)
    db.session.commit()

    return ""
Пример #9
0
def main():
    engine = create_engine(connection_url)
    Session = sessionmaker()
    Session.configure(bind=engine)
    session = Session()

    try:
        client = YnabClient(token)
        budget_id = get_budget_id(client)
        transactions = client.getTransactions(budget_id)

        for t in transactions:
            # TODO: Handle subtransactions
            # TODO: Add more date-related columns. Separate year, month, week of month, day of week etc. to allow for cool window functions
            amount = t['amount'] / 100
            transaction = Transaction(id=t['id'],
                                      date=t['date'],
                                      amount=amount,
                                      category=t['category_name'],
                                      payee=t['payee_name'],
                                      description=t['memo'])
            session.add(transaction)

        session.commit()
    except:
        session.rollback()
        raise
    finally:
        session.close()
Пример #10
0
 def add_block(self, block):  # block is dict here
     # transactions is a list of transaction object
     transactions = [
         Transaction(tx['sender'], tx['recipient'], tx['signature'],
                     tx['amount']) for tx in block['transactions']
     ]
     proof_is_valid = Verification.valid_proof(transactions[:-1],
                                               block['previous_hash'],
                                               block['proof'])
     hashes_match = hash_block(self.chain[-1]) == block['previous_hash']
     if not proof_is_valid or not hashes_match:
         return False
     converted_block = Block(block['index'], block['previous_hash'],
                             transactions, block['proof'],
                             block['timestamp'])
     self.__chain.append(converted_block)
     """
     update open transaction on peer node, when broadcast block to peer node
     the some open transactions on peer node should be removed because it will be store in new block
     """
     stored_transactions = self.__open_transactions[:]
     for itx in block['transactions']:  # itx is incoming tx
         for opentx in stored_transactions:  # opentx is open transaction of node
             # for every incoming transaction, check if it is part of my open transaction
             if opentx.sender == itx['sender'] and opentx.recipient == itx[
                     'recipient'] and opentx.amount == itx[
                         'amount'] and opentx.signature == itx['signature']:
                 # if same, try removing it from peer node to prevent encountering second time
                 try:
                     self.__open_transactions.remove(opentx)
                 except ValueError:
                     print('Item was already removed')
     self.save_data()
     return True
Пример #11
0
    def resolve(self):
        winner_chain = self.chain
        replace = False  # whether our current chain is getting replaced, initially is False
        for node in self.__peer_nodes:
            url = 'http://{}/chain'.format(node)
            try:
                response = requests.get(url)
                node_chain = response.json()  # list of block dict
                # create list of block object with a list of dict transaction
                node_chain = [
                    Block(block['index'], block['previous_hash'], [
                        Transaction(tx['sender'], tx['recipient'],
                                    tx['signature'], tx['amount'])
                        for tx in block['transactions']
                    ], block['proof'], block['timestamp'])
                    for block in node_chain
                ]
                node_chain_length = len(node_chain)
                local_chain_length = len(winner_chain)
                if node_chain_length > local_chain_length and Verification.verify_chain(
                        node_chain):
                    winner_chain = node_chain
                    replace = True  # if replace is True, we can assume our transactions are incorrect

            except requests.exceptions.ConnectionError:
                continue
        self.resolve_conflicts = False
        self.chain = winner_chain
        if replace:
            self.__open_transactions = [
            ]  # if chain is replaced, set local open tx to []
        self.save_data()
        return replace
def create(image_id):
    data = request.form
    image = Image.get_by_id(image_id)
    result = create_transaction(data.get("amount"),
                                data.get("payment_method_nonce"))
    if type(result) == SuccessfulResult:
        new_transaction = Transaction(amount=data.get("amount"),
                                      image=image,
                                      user_id=current_user.id)
        if new_transaction.save():
            requests.post(
                "https://api.mailgun.net/v3/sandboxf2ff5a19c3874580ac009024f05edf38.mailgun.org/messages",
                auth=("api",
                      "17b5f5ca8aa9f463dab52b23c72c4c9d-53c13666-50ef3ea2"),
                data={
                    "from":
                    "Mailgun Sandbox <*****@*****.**>",
                    "to": "[email protected] <*****@*****.**>",
                    "subject": "Hello [email protected]",
                    "text": "Succesfully receive a donation"
                })

            return redirect(url_for("users.show",
                                    username=image.user.username))
        else:
            return "Could not save transaction"
    else:
        return "Could not create braintree transaction"

    return redirect(url_for("users.show", username=image.user.username))
Пример #13
0
def test_transaction_doubled_transaction(capsys):
    account_args = {
        'account': {
            'activeCard': True,
            'availableLimit': 1000
        },
        'violations': ['']
    }
    transaction_args = {
        "transaction": {
            "merchant": "Burger King",
            "amount": 20,
            "time": "2019-02-13T10:00:30.000Z"
        }
    }
    transaction1_args = {
        "transaction": {
            "merchant": "Burger King",
            "amount": 20,
            "time": "2019-02-13T10:00:00.000Z"
        }
    }
    account = Account(**account_args)
    transaction1 = Transaction(**transaction1_args)
    transactions = {0: transaction1}
    TransactionAuthorizer(account, transactions, transaction_args)
    assert capsys.readouterr().out == \
        "{'account': {'activeCard': True, 'availableLimit': 1000}, 'violations': ['doubled-transaction']}\n"
Пример #14
0
def create_checkout(subscription_id):
    subscription = Subscription.get_or_none(Subscription.id == subscription_id)
    user = User.get_by_id(current_user.id)
    nonce_from_the_client = request.form["payment_method_nonce"]
    result = gateway.customer.create({
        "first_name": current_user.name,
        "email": current_user.email,
        "payment_method_nonce": nonce_from_the_client
    })
    
    if result.is_success :
        result_subscription = gateway.subscription.create({
            "id" : current_user.id,
            "payment_method_token": result.customer.payment_methods[0].token,
            "plan_id": subscription.id
        })

    if type(result_subscription) == SuccessfulResult:
        new_transaction = Transaction(amount = subscription.price, subscription = subscription.id , user = current_user.id)

        if new_transaction.save():
            user.is_valid = True
            user.save()
            flash ("Transaction Successful", "success")
            send_message_first_payment.delay(email = current_user.email, name = current_user.name)
            return redirect(url_for('home'))

    else :
        flash ("Transaction Failed, check your card details and try again", "danger")
        return redirect(url_for('home'))    
Пример #15
0
def new_transaction(user_id):
    '''
    Add new transaction.
    '''
    # First check that the user is valid
    dc = DynamoClient()
    user = dc.get_user_by_id(user_id)
    if user is None:
        return Response(json.dumps(
            {'403 BAD': 'Unauthorized access to webhook'}),
                        status=403,
                        mimetype='application/json')

    # If user is valid, make sure that actor or target is the user.
    req_data = request.get_json()
    if req_data['data']['target'][req_data['data']['target']['type']][
            'username'] == user.username or req_data['data']['actor'][
                'username'] == user.username:
        # Then, check the transaction
        try:
            t = Transaction(req_data)
        except:
            return Response(json.dumps(
                {'400 BAD': 'Invalid params for transaction payload'}),
                            status=400,
                            mimetype='application/json')
        # If all is good, index the transaction.
        es = EsClient()
        es.add_transaction(t)
        return Response(json.dumps({'200 OK': 'The request has succeeded'}),
                        status=200,
                        mimetype='application/json')
    return Response(json.dumps({'403 BAD': 'Unauthorized access to webhook'}),
                    status=403,
                    mimetype='application/json')
Пример #16
0
def post():
    try:
        data = request.get_json()
        new_transaction = Transaction(**data).save()
    except Exception as e:
        return jsonify({'error_msg':str(e)}), 405
    return jsonify({'result': new_transaction}), 201
Пример #17
0
    def load_data(self):
        try:
            target_path = "../target/blockchain" + self.__node_port + ".txt"
            with open(target_path, mode="r") as file:
                print("------Loading existing blockchain------")
                file_content = file.readlines()
                blockchain = json.loads(file_content[0][:-1])
                outstanding_transactions = json.loads(file_content[1][:-1])
                updated_blockchain = []
                updated_outstanding_transactions = []

                for block in blockchain:
                    updated_block = Block(
                        block["prev_hash"],
                        block["index"],
                        [
                            Transaction(
                                tx["sender"],
                                tx["recepient"],
                                tx["amount"],
                                tx["signature"],
                                tx["timestamp"],
                            ) for tx in block["transactions"]
                        ],
                        block["proof_of_work"],
                        block["timestamp"],
                    )
                    updated_blockchain.append(updated_block)
                self.__chain = updated_blockchain

                for txn in outstanding_transactions:
                    updated_txn = Transaction(
                        txn["sender"],
                        txn["recepient"],
                        txn["amount"],
                        txn["signature"],
                        txn["timestamp"],
                    )
                    updated_outstanding_transactions.append(updated_txn)
                self.__outstanding_transactions = updated_outstanding_transactions
                global participants
                participants = json.loads(file_content[2][:-1])
                peer_nodes = json.loads(file_content[3][:-1])
                self.__peer_nodes = set(peer_nodes)
                self.__node_port = json.loads(file_content[4])
        except (IOError, IndexError):
            print("------Initializing new blockchain with genesis block------")
Пример #18
0
def select(id):
    sql = "SELECT * FROM transactions WHERE id=%s"
    values = [id]
    result = run_sql(sql, values)[0]
    company = company_repository.select(result["company_id"])
    tag = tag_repository.select(result["tag_id"])
    transaction = Transaction(result["amount"], company, tag, result["id"])
    return transaction
Пример #19
0
def select(id):
    sql = "SELECT * FROM transactions WHERE id = %s"
    values = [id]
    result = run_sql(sql, values)[0]
    merchant = merchant_repository.select(result["merchant_id"])
    tag = tag_repository.select(result["tag_id"])
    transaction = Transaction(merchant, result["date"], result["amount"], tag, result["id"])
    return transaction 
Пример #20
0
def add():
    """Input transaction."""
    t = Transaction(
        datetime.strptime(request.values['day'],
                          '%Y-%m-%d').date(), request.values['supplier'],
        float(request.values['amount']), request.values['category'])
    Session.add(t)
    Session.commit()
    return get_latest()
Пример #21
0
def create_transaction():
    merchant_id = request.form['merchant_id']
    tag_id = request.form['tag_id']
    amount = request.form['amount']
    merchant = merchant_repository.select(merchant_id)
    tag = tag_repository.select(tag_id)
    transaction = Transaction(merchant, tag, amount)
    transaction_repository.save(transaction)
    return redirect('/transactions')
Пример #22
0
def create_transaction():
    amount = request.form["amount"]
    company_id = request.form["company_id"]
    tag_id = request.form["tag_id"]
    company = company_repository.select(company_id)
    tag = tag_repository.select(tag_id)
    new_transaction = Transaction(amount, company, tag)
    transaction_repository.save(new_transaction)
    return redirect("/")
Пример #23
0
def update_transaction(id):
    amount = request.form['amount']
    category = category_repository.select(request.form['category_id'])
    date = request.form['date']
    merchant = merchant_repository.select(request.form['merchant_id'])
    user = user_repository.select(request.form['user_id'])
    transaction = Transaction(amount, category, date, merchant, user, id)
    transaction_repository.update(transaction)
    return redirect("/transactions")
Пример #24
0
def select(id):
    sql = "SELECT * FROM transactions WHERE id = %s"
    values = [id]
    result = run_sql(sql, values)[0]
    tag = tag_repository.select(result['tag_id'])
    merchant = merchant_repository.select(result['merchant_id'])
    user = user_repository.select(result['user_id'])
    transaction = Transaction(tag, merchant, user, result['amount'], result['date'], result['id'])
    return transaction
def create_transaction():
    amount = request.form["amount"]
    merchant_id = request.form["merchant_id"]
    tag_id = request.form["tag_id"]
    merchant = merchant_repository.select(merchant_id)
    tag = tag_repository.select(tag_id)
    new_transaction = Transaction(amount, merchant, tag)
    transaction_repository.save(new_transaction)
    return redirect("/transactions")
Пример #26
0
def test_transaction_minimum_interval(capsys):
    account_args = {
        'account': {
            'activeCard': True,
            'availableLimit': 1000
        },
        'violations': ['']
    }
    transaction_args = {
        "transaction": {
            "merchant": "Burger King",
            "amount": 20,
            "time": "2019-02-13T10:01:30.000Z"
        }
    }
    transaction1_args = {
        "transaction": {
            "merchant": "Burger King",
            "amount": 30,
            "time": "2019-02-13T10:00:00.000Z"
        }
    }
    transaction2_args = {
        "transaction": {
            "merchant": "7 Eleven",
            "amount": 20,
            "time": "2019-02-13T10:00:30.000Z"
        }
    }
    transaction3_args = {
        "transaction": {
            "merchant": "Pizza Hut",
            "amount": 10,
            "time": "2019-02-13T10:01:00.000Z"
        }
    }
    account = Account(**account_args)
    transaction1 = Transaction(**transaction1_args)
    transaction2 = Transaction(**transaction2_args)
    transaction3 = Transaction(**transaction3_args)
    transactions = {0: transaction1, 1: transaction2, 2: transaction3}
    TransactionAuthorizer(account, transactions, transaction_args)
    assert capsys.readouterr().out == \
        "{'account': {'activeCard': True, 'availableLimit': 1000}, 'violations': ['high-frequency-small-intervall']}\n"
Пример #27
0
    def load_data(self):
        try:
            # mode should be 'rb' if using pickle, and txt should be p
            with open('blockchain-{}.txt'.format(self.node_id), mode='r') as f:
                # file_content = pickle.loads(f.read())
                # blockchain = file_content['chain']
                # open_transactions = file_content['ot']
                file_content = f.readlines()
                # from string to python object
                blockchain = json.loads(file_content[0][:-1])  # without '\n'
                # at this time, blockchain is a list of dict  # [{..}, {..}...]
                updated_blockchain = []
                for block in blockchain:
                    converted_tx = [
                        Transaction(tx['sender'], tx['recipient'],
                                    tx['signature'], tx['amount'])
                        for tx in block['transactions']
                    ]  # a list of transaction object
                    # block = {...} for now
                    updated_block = Block(block['index'],
                                          block['previous_hash'], converted_tx,
                                          block['proof'], block['timestamp'])
                    updated_blockchain.append(updated_block)
                self.chain = updated_blockchain  # a list of block object will be loaded by setter

                open_transactions = json.loads(file_content[1][:-1])
                updated_transactions = []
                for tx in open_transactions:
                    updated_transaction = Transaction(tx['sender'],
                                                      tx['recipient'],
                                                      tx['signature'],
                                                      tx['amount'])
                    updated_transactions.append(updated_transaction)
                self.__open_transactions = updated_transactions

                peer_nodes = json.loads(file_content[2])
                self.__peer_nodes = set(peer_nodes)

        # IOError is file not found error
        except (IOError, IndexError):
            pass
        finally:
            print('Cleanup!')
def select_one_transaction(id):
    sql = "SELECT * FROM transactions WHERE id = %s"
    values = [id]
    result = run_sql(sql, values)[0]
    account = account_repository.select_one_account(result["account_id"])
    merchant = merchant_repository.select_one_merchant(result["merchant_id"])
    tag = tag_repository.select_one_tag(result["tag_id"])
    transaction = Transaction(account, merchant, result['amount'],
                              result['date'], tag, result['id'])
    return transaction
Пример #29
0
def select_all():
    transactions = []
    sql = "SELECT * FROM transactions"
    results = run_sql(sql)
    for result in results:
        company = company_repository.select(result["company_id"])
        tag = tag_repository.select(result["tag_id"])
        transaction = Transaction(result["amount"], company, tag, result["id"])
        transactions.append(transaction)
    return transactions
Пример #30
0
def create_transaction():
    merchant_id = request.form["merchant_id"]
    merchant = merchant_repository.select(merchant_id)
    date = request.form["date"]
    amount = float(request.form["amount"])
    tag_id = request.form["tag_id"]
    tag = tag_repository.select(tag_id)
    new_transaction = Transaction(merchant, date, amount, tag)
    transaction_repository.save(new_transaction)
    return redirect("/transactions")