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215 lines
9.7 KiB
215 lines
9.7 KiB
import sqlite3 as sqlite
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from sqlalchemy.exc import SQLAlchemyError
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from sqlalchemy import and_
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from be.model import postgreSQLORM
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from be.model.postgreSQLORM import Store_Book
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from be.model.postgreSQLORM import New_Order_Detail
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from be.model.postgreSQLORM import New_Order
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from be.model.postgreSQLORM import User
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import uuid
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import json
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import logging
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from be.model import db_conn
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from be.model import error
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class Buyer(db_conn.DBConn):
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def __init__(self):
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db_conn.DBConn.__init__(self)
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def new_order(self, user_id: str, store_id: str, id_and_count: [(str, int)]) -> (int, str, str):
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order_id = ""
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try:
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if not self.user_id_exist(user_id):
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return error.error_non_exist_user_id(user_id) + (order_id, )
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if not self.store_id_exist(store_id):
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return error.error_non_exist_store_id(store_id) + (order_id, )
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uid = "{}_{}_{}".format(user_id, store_id, str(uuid.uuid1()))
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# print("touch0")
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for book_id, count in id_and_count:
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row = self.session.query(postgreSQLORM.Store_Book).filter(and_(postgreSQLORM.Store_Book.store_id==store_id,postgreSQLORM.Store_Book.book_id==book_id)).first()
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# cursor = self.conn.execute(
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# "SELECT book_id, stock_level, book_info FROM store "
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# "WHERE store_id = ? AND book_id = ?;",
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# (store_id, book_id))
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# row = cursor.fetchone()
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if row is None:
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return error.error_non_exist_book_id(book_id) + (order_id, )
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# stock_level = row[1]
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# book_info = row[2]
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stock_level = row.stock_level
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book_info = row.book_info
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book_info_json = json.loads(book_info)
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price = book_info_json.get("price")
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if stock_level < count:
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return error.error_stock_level_low(book_id) + (order_id,)
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# print("touch2")
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row = self.session.query(Store_Book).filter(and_(Store_Book.store_id==store_id,Store_Book.book_id==book_id,Store_Book.stock_level>=count)).update({'stock_level':Store_Book.stock_level-count})
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# cursor = self.conn.execute(
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# "UPDATE store set stock_level = stock_level - ? "
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# "WHERE store_id = ? and book_id = ? and stock_level >= ?; ",
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# (count, store_id, book_id, count))
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# if cursor.rowcount == 0:
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# print("touch3")
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if row == 0:
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return error.error_stock_level_low(book_id) + (order_id, )
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# print("touch4")
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new_order_detail_entity = New_Order_Detail(order_id=uid,book_id=book_id,count=count,price=price)
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# print("touch5")
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row = self.session.add(new_order_detail_entity)
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# self.session.commit()
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# self.conn.execute(
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# "INSERT INTO new_order_detail(order_id, book_id, count, price) "
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# "VALUES(?, ?, ?, ?);",
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# (uid, book_id, count, price))
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# print("touch1")
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new_order_entity = New_Order(order_id=uid,fk_store_id=store_id,fk_user_id=user_id)
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self.session.add(new_order_entity)
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# self.conn.execute(
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# "INSERT INTO new_order(order_id, store_id, user_id) "
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# "VALUES(?, ?, ?);",
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# (uid, store_id, user_id))
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# self.conn.commit()
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self.session.commit()
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order_id = uid
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except SQLAlchemyError as e:
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logging.info("528, {}".format(str(e)))
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return 528, "{}".format(str(e)), ""
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except BaseException as e:
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logging.info("530, {}".format(str(e)))
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return 530, "{}".format(str(e)), ""
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return 200, "ok", order_id
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def payment(self, user_id: str, password: str, order_id: str) -> (int, str):
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# conn = self.conn
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session = self.session
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try:
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row = session.query(New_Order).filter(New_Order.order_id==order_id).first()
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# cursor = conn.execute("SELECT order_id, user_id, store_id FROM new_order WHERE order_id = ?", (order_id,))
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# row = cursor.fetchone()
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if row is None:
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return error.error_invalid_order_id(order_id)
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# order_id = row[0]
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# buyer_id = row[1]
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# store_id = row[2]
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order_id = row.order_id
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buyer_id = row.fk_user_id
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store_id = row.fk_store_id
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if buyer_id != user_id:
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return error.error_authorization_fail()
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row = session.query(postgreSQLORM.User).filter(postgreSQLORM.User.user_id==buyer_id).first()
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# cursor = conn.execute("SELECT balance, password FROM user WHERE user_id = ?;", (buyer_id,))
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# row = cursor.fetchone()
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if row is None:
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return error.error_non_exist_user_id(buyer_id)
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# balance = row[0]
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balance = row.balance
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pwd = row.password
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if password != pwd:
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return error.error_authorization_fail()
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row = session.query(postgreSQLORM.User_Store).filter(postgreSQLORM.User_Store.fk_store_id==store_id).first()
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# cursor = conn.execute("SELECT store_id, user_id FROM user_store WHERE store_id = ?;", (store_id,))
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# row = cursor.fetchone()
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if row is None:
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return error.error_non_exist_store_id(store_id)
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# seller_id = row[1]
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seller_id = row.fk_user_id
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if not self.user_id_exist(seller_id):
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return error.error_non_exist_user_id(seller_id)
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row = session.query(New_Order_Detail).filter(New_Order_Detail.order_id==order_id).all()
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# cursor = conn.execute("SELECT book_id, count, price FROM new_order_detail WHERE order_id = ?;", (order_id,))
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total_price = 0
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# for row in cursor:
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# count = row[1]
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# price = row[2]
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# total_price = total_price + price * count
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for i in row:
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count = i.count
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price = i.price
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total_price = total_price + price * count
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if balance < total_price:
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return error.error_not_sufficient_funds(order_id)
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# print('touch0')
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## 买家扣钱
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row = session.query(User).filter(and_(User.balance>=total_price,User.user_id==buyer_id)).update({'balance':User.balance-total_price})
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# cursor = conn.execute("UPDATE user set balance = balance - ?"
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# "WHERE user_id = ? AND balance >= ?",
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# (total_price, buyer_id, total_price))
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# if cursor.rowcount == 0:
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if row == 0:
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return error.error_not_sufficient_funds(order_id)
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# print('touch1')
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## 卖家加钱
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row = session.query(User).filter(User.user_id==seller_id).update({'balance':User.balance+total_price})
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# cursor = conn.execute("UPDATE user set balance = balance + ?"
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# "WHERE user_id = ?",
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# (total_price, buyer_id))
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# if cursor.rowcount == 0:
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if row == 0:
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return error.error_non_exist_user_id(buyer_id)
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# print('touch2')
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row = session.query(New_Order).filter(New_Order.order_id==order_id).delete()
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# cursor = conn.execute("DELETE FROM new_order WHERE order_id = ?", (order_id, ))
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# if cursor.rowcount == 0:
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if row == 0:
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return error.error_invalid_order_id(order_id)
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row = session.query(New_Order_Detail).filter(New_Order_Detail.order_id==order_id).delete()
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# cursor = conn.execute("DELETE FROM new_order_detail where order_id = ?", (order_id, ))
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# if cursor.rowcount == 0:
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if row == 0:
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return error.error_invalid_order_id(order_id)
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# conn.commit()
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session.commit()
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except SQLAlchemyError as e:
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return 528, "{}".format(str(e))
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except BaseException as e:
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return 530, "{}".format(str(e))
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return 200, "ok"
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def add_funds(self, user_id, password, add_value) -> (int, str):
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try:
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row = self.session.query(postgreSQLORM.User).filter(postgreSQLORM.User.user_id==user_id).first()
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# cursor = self.conn.execute("SELECT password from user where user_id=?", (user_id,))
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# row = cursor.fetchone()
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if row is None:
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return error.error_authorization_fail()
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pwd = row.password
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if pwd != password:
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return error.error_authorization_fail()
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row = self.session.query(postgreSQLORM.User).filter_by(user_id=user_id).update({'balance':postgreSQLORM.User.balance+add_value,'user_id':user_id})
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# cursor = self.conn.execute(
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# "UPDATE user SET balance = balance + ? WHERE user_id = ?",
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# (add_value, user_id))
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if row == 0:
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return error.error_non_exist_user_id(user_id)
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self.session.commit()
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# self.conn.commit()
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except SQLAlchemyError as e:
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return 528, "{}".format(str(e))
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except BaseException as e:
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return 530, "{}".format(str(e))
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return 200, "ok"
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