You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
162 lines
6.3 KiB
162 lines
6.3 KiB
import sqlite3 as sqlite
|
|
import uuid
|
|
import json
|
|
import logging
|
|
from be.model import db_conn
|
|
from be.model import error
|
|
|
|
|
|
class Buyer(db_conn.DBConn):
|
|
def __init__(self):
|
|
db_conn.DBConn.__init__(self)
|
|
|
|
def new_order(self, user_id: str, store_id: str, id_and_count: [(str, int)]) -> (int, str, str):
|
|
order_id = ""
|
|
try:
|
|
if not self.user_id_exist(user_id):
|
|
return error.error_non_exist_user_id(user_id) + (order_id, )
|
|
if not self.store_id_exist(store_id):
|
|
return error.error_non_exist_store_id(store_id) + (order_id, )
|
|
uid = "{}_{}_{}".format(user_id, store_id, str(uuid.uuid1()))
|
|
|
|
for book_id, count in id_and_count:
|
|
cursor = self.conn.execute(
|
|
"SELECT book_id, stock_level, book_info FROM store "
|
|
"WHERE store_id = ? AND book_id = ?;",
|
|
(store_id, book_id))
|
|
row = cursor.fetchone()
|
|
if row is None:
|
|
return error.error_non_exist_book_id(book_id) + (order_id, )
|
|
|
|
stock_level = row[1]
|
|
book_info = row[2]
|
|
book_info_json = json.loads(book_info)
|
|
price = book_info_json.get("price")
|
|
|
|
if stock_level < count:
|
|
return error.error_stock_level_low(book_id) + (order_id,)
|
|
|
|
cursor = self.conn.execute(
|
|
"UPDATE store set stock_level = stock_level - ? "
|
|
"WHERE store_id = ? and book_id = ? and stock_level >= ?; ",
|
|
(count, store_id, book_id, count))
|
|
if cursor.rowcount == 0:
|
|
return error.error_stock_level_low(book_id) + (order_id, )
|
|
|
|
self.conn.execute(
|
|
"INSERT INTO new_order_detail(order_id, book_id, count, price) "
|
|
"VALUES(?, ?, ?, ?);",
|
|
(uid, book_id, count, price))
|
|
|
|
self.conn.execute(
|
|
"INSERT INTO new_order(order_id, store_id, user_id) "
|
|
"VALUES(?, ?, ?);",
|
|
(uid, store_id, user_id))
|
|
self.conn.commit()
|
|
order_id = uid
|
|
except sqlite.Error as e:
|
|
logging.info("528, {}".format(str(e)))
|
|
return 528, "{}".format(str(e)), ""
|
|
except BaseException as e:
|
|
logging.info("530, {}".format(str(e)))
|
|
return 530, "{}".format(str(e)), ""
|
|
|
|
return 200, "ok", order_id
|
|
|
|
def payment(self, user_id: str, password: str, order_id: str) -> (int, str):
|
|
conn = self.conn
|
|
try:
|
|
cursor = conn.execute("SELECT order_id, user_id, store_id FROM new_order WHERE order_id = ?", (order_id,))
|
|
row = cursor.fetchone()
|
|
if row is None:
|
|
return error.error_invalid_order_id(order_id)
|
|
|
|
order_id = row[0]
|
|
buyer_id = row[1]
|
|
store_id = row[2]
|
|
|
|
if buyer_id != user_id:
|
|
return error.error_authorization_fail()
|
|
|
|
cursor = conn.execute("SELECT balance, password FROM user WHERE user_id = ?;", (buyer_id,))
|
|
row = cursor.fetchone()
|
|
if row is None:
|
|
return error.error_non_exist_user_id(buyer_id)
|
|
balance = row[0]
|
|
if password != row[1]:
|
|
return error.error_authorization_fail()
|
|
|
|
cursor = conn.execute("SELECT store_id, user_id FROM user_store WHERE store_id = ?;", (store_id,))
|
|
row = cursor.fetchone()
|
|
if row is None:
|
|
return error.error_non_exist_store_id(store_id)
|
|
|
|
seller_id = row[1]
|
|
|
|
if not self.user_id_exist(seller_id):
|
|
return error.error_non_exist_user_id(seller_id)
|
|
|
|
cursor = conn.execute("SELECT book_id, count, price FROM new_order_detail WHERE order_id = ?;", (order_id,))
|
|
total_price = 0
|
|
for row in cursor:
|
|
count = row[1]
|
|
price = row[2]
|
|
total_price = total_price + price * count
|
|
|
|
if balance < total_price:
|
|
return error.error_not_sufficient_funds(order_id)
|
|
|
|
cursor = conn.execute("UPDATE user set balance = balance - ?"
|
|
"WHERE user_id = ? AND balance >= ?",
|
|
(total_price, buyer_id, total_price))
|
|
if cursor.rowcount == 0:
|
|
return error.error_not_sufficient_funds(order_id)
|
|
|
|
cursor = conn.execute("UPDATE user set balance = balance + ?"
|
|
"WHERE user_id = ?",
|
|
(total_price, buyer_id))
|
|
|
|
if cursor.rowcount == 0:
|
|
return error.error_non_exist_user_id(buyer_id)
|
|
|
|
cursor = conn.execute("DELETE FROM new_order WHERE order_id = ?", (order_id, ))
|
|
if cursor.rowcount == 0:
|
|
return error.error_invalid_order_id(order_id)
|
|
|
|
cursor = conn.execute("DELETE FROM new_order_detail where order_id = ?", (order_id, ))
|
|
if cursor.rowcount == 0:
|
|
return error.error_invalid_order_id(order_id)
|
|
|
|
conn.commit()
|
|
|
|
except sqlite.Error as e:
|
|
return 528, "{}".format(str(e))
|
|
|
|
except BaseException as e:
|
|
return 530, "{}".format(str(e))
|
|
|
|
return 200, "ok"
|
|
|
|
def add_funds(self, user_id, password, add_value) -> (int, str):
|
|
try:
|
|
cursor = self.conn.execute("SELECT password from user where user_id=?", (user_id,))
|
|
row = cursor.fetchone()
|
|
if row is None:
|
|
return error.error_authorization_fail()
|
|
|
|
if row[0] != password:
|
|
return error.error_authorization_fail()
|
|
|
|
cursor = self.conn.execute(
|
|
"UPDATE user SET balance = balance + ? WHERE user_id = ?",
|
|
(add_value, user_id))
|
|
if cursor.rowcount == 0:
|
|
return error.error_non_exist_user_id(user_id)
|
|
|
|
self.conn.commit()
|
|
except sqlite.Error as e:
|
|
return 528, "{}".format(str(e))
|
|
except BaseException as e:
|
|
return 530, "{}".format(str(e))
|
|
|
|
return 200, "ok"
|