#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#__authot__ = yangdanhua
#shopping model


#購物車品類
product_list = [('iphone 8',7000),
                ('iphone 7',6000),
                ('iphone 6',5000),
                ('iphone se',4500),
                ('Mac pro',10050),
                ('iphone X',9000)]

#輸入用於購買的金額
salary = raw_input('please input your salary:'
 
)
shopping_list=[]

#判斷輸入金額是否為數字
if salary.isdigit():
    salary = int(salary)

#if內部迴圈
while True:
    for product in product_list:    #迴圈輸出所有品類，每次判斷都要重新列印一遍
        print ('\033[34;1m%s,%s,%s\033[0m'%(product_list.index(product),product[0],product[1]))
    product_choice = raw_input('please choice one product:'
 
)    #輸入選擇產品編號

    if product_choice.isdigit():    #判斷輸入字元型別是否正確
        product_choice = int(product_choice)    #型別強轉

        if product_choice<len(product_list) and product_choice>=0: #判斷輸入是否在範圍內
            product_item =  product_list[product_choice]

            if product_item[1]<=salary:     #判斷剩下的錢還夠不夠買東西
 

                shopping_list.append(product_item[0])   #把購買的資訊存一下，待會會有清單
                salary  -= product_item[1]
                print ('added \033[31;1m%s\033[0m into shopping cart,your currant balance is \033[31;1m%s\033[0m'%(product_item[0],salary))
            else:
                print('\033[31;1myour balance is not enough\033[0m')

        else:
            print ('\033[42;1mproduct is not exist,please choise again\033[0m')

    elif product_choice == 'q' or 'Q':   #若輸入的'q' or 'Q'則自動退出
        print ('\033[35;1m-------------shopping list-------------\033[0m')
        for i in shopping_list:
            print ('\033[31;1m%s\033[0m'%i)
        print 'salary:','\033[31;1m%s\033[0m'%salary
        break

    else:
        print('\033[36;1minvlid digit,please input again\033[0m')

#輸入金額部位數字則提示輸入錯誤
else:
    print('\033[41;1minvlid digit,please input again\033[0m')