def read_transactions(self, path):
for customer_id, quantity, product_id, store_id in file_reader(
path, 4, sep='|', header=True):
remain = self._stores[store_id]._items[product_id]
track = int(quantity)
if customer_id in self._customers.keys():
if remain >= track:
self._customers[customer_id].add_customer_cart(
product_id, track) # using the student cwid as key
self._stores[store_id].remove_product(product_id, track)
else:
self._customers[customer_id].add_customer_cart(
product_id, remain)
self._stores[store_id].remove_product(product_id, remain)
else:
print(
f"Warning: customer_id {customer_id} is not in the customers file"
)
if product_id in self._products.keys():
if remain > track:
self._products[product_id].add_entities(customer_id, track)
else:
self._products[product_id].add_entities(
customer_id, remain)
else:
print(
f"Warning: instructor cwid {customer_id} is not in the instructor file"
)
def read_inventory(self, path):
'''Inventory reader keeps a track of the quantity as well as
links the store id and product id using the keys'''
try:
for store_id, quantity, product_id in file_reader(path,
3,
sep='|',
header=True):
track = int(
quantity
) # using the tracker object to specify the type of quantity as by default it takes quantity as a string
if store_id in self._stores.keys():
if product_id in self._stores[store_id]._items.keys():
print(
f"Warning: instructor cwid {product_id} is not in the instructor file"
)
else:
self._stores[store_id].add_products(
product_id, track
) # as the values are specified as in the store dictionary, this used the store id to add products and quantity using the product key
else:
print(
f"Warning: Store_id {store_id} is not in the stores file"
)
except ValueError as erf:
print(erf)
def read_products(self, path): # reads the product file
try:
for product_id, store_id, product_name in file_reader(
path, 3, sep='|', header=False):
if product_id in self._products.keys(
): # using product id as key to generate the product id, store id and product name as mentioned below
print(f"Already exists {product_id}")
else:
self._products[product_id] = Product(
product_id, store_id, product_name)
except ValueError as err:
print(err)
def read_stores(self, path):
try:
for store_id, store_name in file_reader(
path, 2, sep='*', header=True
): # specifies the header and seperater using my file reader
if store_id in self._stores.keys(): # store id checker
print(f"Already exists {store_id}")
else:
self._stores[store_id] = Stores(
store_id, store_name
) # generate the store id and store name using store id as key
except ValueError as err:
print(err)
def read_customers(self, path): # reads the customers file
try:
for customer_id, customer_name in file_reader(path,
2,
sep=",",
header=True):
if customer_id in self._customers.keys():
print(f"ALready exists {customer_id}")
else:
self._customers[customer_id] = Customer(
customer_name, customer_id)
except ValueError as err:
print(err)