#!/usr/bin/env python

# -*- coding:utf-8 -*-

# Author:__Json.Zzgx__

product_list = [

    ('iphone',5800),

    ('lenovo',30000),

    ('bike',800),

    ('tesla',20000),

    ('house',40),

    ('horse',10),

]

name = 'egon'

passwd = 'egon123'

salary = 0

shopping_list = []

flag=False

while True:

    if flag:

        break

    user = input("用户名: ").strip()

    pas = input("密码: ").strip()

    if  user == name and   pas == passwd:

        flag=False

        while True:

            salary = input("请输入您的工资：").strip()

            if salary.isdigit():

                salary = int(salary)

                flag=True

                break

            print("请以数字的形式输入您的工资,请重新输入:")

            flag=False

    else:

        print('用户名或密码不正确')

        flag=False

        continue

while True:

    print("\n---------------- 商品列表 ----------------")

    can = False

    for index,buy in enumerate(product_list):

        if buy[1] <= salary:

            can = True

            print(index,"商品:%s 价格:%s元.按q退出购买" % (buy[0].center(8,' '), buy[1]))

    if not can:

        print("没有可以购买的商品,按q退出购买")

    user_choice = input("选择要买的商品编号 >>>: ").strip()

    if user_choice.isdigit():

        user_choice = int(user_choice)

        if user_choice < len(product_list) and user_choice >=0:

            p_item = product_list[user_choice]

            if p_item[1] <= salary: #买的起

                shopping_list.append(p_item)

                salary -= p_item[1]

                print("\n================================================")

                print("商品：%s ,价格：%s元 已加入您的购物车" %(p_item[0],p_item[1]))

                print("================================================\n")

                print("您的余额还剩 \033[31;1m %s \033[0m 给您推荐如下商品："  %(salary))

        else:

            print("商品[%s]不存在!" % user_choice)

    elif user_choice == 'q':

        print("\n---------------- 购买列表 ----------------")

        listset = set(shopping_list)

        sum = 0

        for item in listset:

            print("商品：%s ,价格：%s元, 数量：%s 件" % (item[0], item[1],shopping_list.count(item)))

            sum += item[1] * shopping_list.count(item)

        print("------------------------------------------")

        print("\n您的余额还剩:",salary,"元")

        print("总计消费：%s 元" %(sum))

        exit()

    else:

        print("您输入的商品编号有误，请重新输入")