96 lines
3.4 KiB
Python
96 lines
3.4 KiB
Python
import sqlalchemy
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from db import PurchaseEntry, Product, User
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from helpers import less
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from sqlalchemy import desc
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from sqlalchemy import func
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from statistikkHelpers import statisticsTextOnly
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from text_interface.helpermenus import Menu
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__all__ = ["ProductPopularityMenu", "ProductRevenueMenu", "BalanceMenu", "LoggedStatisticsMenu"]
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class ProductPopularityMenu(Menu):
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def __init__(self):
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Menu.__init__(self, 'Products by popularity', uses_db=True)
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def _execute(self):
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self.print_header()
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text = ''
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sub = \
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self.session.query(PurchaseEntry.product_id,
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func.count('*').label('purchase_count')) \
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.group_by(PurchaseEntry.product_id) \
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.subquery()
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product_list = \
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self.session.query(Product, sub.c.purchase_count) \
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.outerjoin((sub, Product.product_id == sub.c.product_id)) \
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.order_by(desc(sub.c.purchase_count)) \
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.filter(sub.c.purchase_count is not None) \
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.all()
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line_format = '%10s | %-' + str(Product.name_length) + 's\n'
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text += line_format % ('items sold', 'product')
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text += '-' * 58 + '\n'
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for product, number in product_list:
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text += line_format % (number, product.name)
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less(text)
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class ProductRevenueMenu(Menu):
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def __init__(self):
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Menu.__init__(self, 'Products by revenue', uses_db=True)
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def _execute(self):
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self.print_header()
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text = ''
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sub = \
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self.session.query(PurchaseEntry.product_id,
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func.count('*').label('purchase_count')) \
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.group_by(PurchaseEntry.product_id) \
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.subquery()
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product_list = \
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self.session.query(Product, sub.c.purchase_count) \
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.outerjoin((sub, Product.product_id == sub.c.product_id)) \
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.order_by(desc(sub.c.purchase_count * Product.price)) \
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.filter(sub.c.purchase_count is not None) \
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.all()
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line_format = '%7s | %10s | %5s | %-' + str(Product.name_length) + 's\n'
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text += line_format % ('revenue', 'items sold', 'price', 'product')
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text += '-' * (31 + Product.name_length) + '\n'
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for product, number in product_list:
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text += line_format % (number * product.price, number, product.price, product.name)
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less(text)
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class BalanceMenu(Menu):
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def __init__(self):
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Menu.__init__(self, 'Total balance of PVVVV', uses_db=True)
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def _execute(self):
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self.print_header()
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text = ''
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total_value = 0
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product_list = self.session.query(Product).all()
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for p in product_list:
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total_value += p.stock * p.price
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total_credit = self.session.query(sqlalchemy.func.sum(User.credit)).first()[0]
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total_balance = total_value - total_credit
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line_format = '%15s | %5d \n'
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text += line_format % ('Total value', total_value)
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text += 24 * '-' + '\n'
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text += line_format % ('Total credit', total_credit)
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text += 24 * '-' + '\n'
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text += line_format % ('Total balance', total_balance)
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less(text)
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class LoggedStatisticsMenu(Menu):
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def __init__(self):
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Menu.__init__(self, 'Statistics from log', uses_db=True)
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def _execute(self):
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statisticsTextOnly()
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