import sqlalchemy
from db import User, Product
from text_interface.helpermenus import Menu, Selector
__all__ = ["AddUserMenu", "AddProductMenu", "EditProductMenu", "AdjustStockMenu", "CleanupStockMenu", "EditUserMenu"]
class AddUserMenu(Menu):
def __init__(self):
Menu.__init__(self, 'Add user', uses_db=True)
def _execute(self):
self.print_header()
username = self.input_str('Username (should be same as PVV username)> ', User.name_re, (1, 10))
cardnum = self.input_str('Card number (optional)> ', User.card_re, (0, 10))
cardnum = cardnum.lower()
rfid = self.input_str('RFID (optional)> ', User.rfid_re, (0, 10))
user = User(username, cardnum, rfid)
self.session.add(user)
try:
self.session.commit()
print 'User %s stored' % username
except sqlalchemy.exc.IntegrityError, e:
print 'Could not store user %s: %s' % (username, e)
self.pause()
class EditUserMenu(Menu):
def __init__(self):
Menu.__init__(self, 'Edit user', uses_db=True)
self.help_text = '''
The only editable part of a user is its card number and rfid.
First select an existing user, then enter a new card number for that
user, then rfid (write an empty line to remove the card number or rfid).
'''
def _execute(self):
self.print_header()
user = self.input_user('User> ')
self.printc('Editing user %s' % user.name)
card_str = '"%s"' % user.card
if user.card is None:
card_str = 'empty'
user.card = self.input_str('Card number (currently %s)> ' % card_str,
User.card_re, (0, 10),
empty_string_is_none=True)
if user.card:
user.card = user.card.lower()
rfid_str = '"%s"' % user.rfid
if user.rfid is None:
rfid_str = 'empty'
user.rfid = self.input_str('RFID (currently %s)> ' % rfid_str,
User.rfid_re, (0, 10),
empty_string_is_none=True)
try:
self.session.commit()
print 'User %s stored' % user.name
except sqlalchemy.exc.SQLAlchemyError, e:
print 'Could not store user %s: %s' % (user.name, e)
self.pause()
class AddProductMenu(Menu):
def __init__(self):
Menu.__init__(self, 'Add product', uses_db=True)
def _execute(self):
self.print_header()
bar_code = self.input_str('Bar code> ', Product.bar_code_re, (8, 13))
name = self.input_str('Name> ', Product.name_re, (1, Product.name_length))
price = self.input_int('Price> ', (1, 100000))
product = Product(bar_code, name, price)
self.session.add(product)
try:
self.session.commit()
print 'Product %s stored' % name
except sqlalchemy.exc.SQLAlchemyError, e:
print 'Could not store product %s: %s' % (name, e)
self.pause()
class EditProductMenu(Menu):
def __init__(self):
Menu.__init__(self, 'Edit product', uses_db=True)
def _execute(self):
self.print_header()
product = self.input_product('Product> ')
self.printc('Editing product %s' % product.name)
while True:
selector = Selector('Do what with %s?' % product.name,
items=[('name', 'Edit name'),
('price', 'Edit price'),
('barcode', 'Edit barcode'),
('hidden', 'Edit hidden status'),
('store', 'Store')])
what = selector.execute()
if what == 'name':
product.name = self.input_str('Name[%s]> ' % product.name, Product.name_re, (1, product.name_length))
elif what == 'price':
product.price = self.input_int('Price[%s]> ' % product.price, (1, 100000))
elif what == 'barcode':
product.bar_code = self.input_str('Bar code[%s]> ' % product.bar_code, Product.bar_code_re, (8, 13))
elif what == 'hidden':
product.hidden = self.confirm('Hidden[%s]' % ("Y" if product.hidden else "N"), False)
elif what == 'store':
try:
self.session.commit()
print 'Product %s stored' % product.name
except sqlalchemy.exc.SQLAlchemyError, e:
print 'Could not store product %s: %s' % (product.name, e)
self.pause()
return
elif what is None:
print 'Edit aborted'
return
else:
print 'What what?'
class AdjustStockMenu(Menu):
def __init__(self):
Menu.__init__(self, 'Adjust stock', uses_db=True)
def _execute(self):
self.print_header()
product = self.input_product('Product> ')
print 'The stock of this product is: %d ' % product.stock
print 'Write the number of products you have added to the stock'
print 'Alternatively, correct the stock for any mistakes'
add_stock = self.input_int('Added stock> ', (-1000, 1000))
print 'You added %d to the stock of %s' % (add_stock, product)
product.stock += add_stock
print 'The stock is now %d' % product.stock
try:
self.session.commit()
print 'Stock is now stored'
self.pause()
except sqlalchemy.exc.SQLAlchemyError, e:
print 'Could not store stock: %s' % e
self.pause()
return
print 'The stock is now %d' % product.stock
class CleanupStockMenu(Menu):
def __init__(self):
Menu.__init__(self, 'Stock Cleanup', uses_db=True)
def _execute(self):
self.print_header()
products = self.session.query(Product).filter(Product.stock != 0).all()
print "Every product in stock will be printed."
print "Entering no value will keep current stock or set it to 0 if it is negative."
print "Entering a value will set current stock to that value."
print "Press enter to begin."
self.pause()
changed_products = []
for product in products:
oldstock = product.stock
product.stock = self.input_int(product.name, (0, 10000), default=max(0, oldstock))
self.session.add(product)
if oldstock != product.stock:
changed_products.append((product, oldstock))
try:
self.session.commit()
print 'New stocks are now stored.'
self.pause()
except sqlalchemy.exc.SQLAlchemyError, e:
print 'Could not store stock: %s' % e
self.pause()
return
for p in changed_products:
print p[0].name, ".", p[1], "->", p[0].stock