#include<map>
#include<vector>
#include<cstdio>
#include<iostream>
#include<algorithm>
class Users{
private:
std::map<std::string,std::string> m;
public:
Users(){m["boss"]=std::string("123");}
bool addUser(std::string username,std::string password)
{
auto it=m.find(username);
if(it!=m.end()) return false;
m[username]=password;
return true;
}
bool check(std::string username,std::string password)
{
auto it = m.find(username);
if(it==m.end()) return false;
if(it->second!=password) return false;
return true;
}
bool login()
{
puts("输入用户名:");
std::string uname;
std::cin >> uname;
puts("输入密码:");
std::string passw;
std::cin >> passw;
if (!check(uname, passw))
{
puts("用户名或密码错误");
system("sleep 0.6");
return false;
}
puts("登录成功");
system("sleep 0.6");
system("cls");
return true;
}
}users;
class CandyList{
private:
std::map<std::string,int> list;//名字到id的映射
std::vector<std::string> nameList;
public:
CandyList(){nameList.resize(1);}
int queryId(std::string name)//传入名字，返回id，不存在返回0
{
auto it = list.find(name);
if(it!=list.end())
return it->second;
return 0;
}
std::string queryName(int id)
{
if(id>nameList.size()) return std::string("");
return nameList[id];
}
int addCandyKind(std::string name)//无论有没有，都返回id
{
int id=queryId(name);
if(id) return id;
id=list.size()+1;
// printf("&&DEBUG&&\n%s %d\n\n",name.c_str(),id);
list[name]=id;
nameList.push_back(name);
return id;
}
}candyList;
class Store{//仓库
private:
std::vector<std::pair<int, int> > s; //数量、单价
int sum;
public:
Store()
{
s.clear();
s.resize(100);
sum=0;
}
int getSum(){return sum;}
int getPrice(int id){return s[id].second;}
void displayCandy()
{
// std::cout<<s.size()<<" ***"<<std::endl;
std::cout << "编号\t品名\t剩余数量\t单价" << std::endl;
for(int i=0;i<s.size();i++)
{
if(s[i].first>0)
{
std::cout<<i<<"\t"<<candyList.queryName(i)<<"\t"<<s[i].first<<"\t"<<s[i].second<<std::endl;
}
}
}
void addCandy(std::string name,int num,int price=-1)
{
bool ok=1;
if(num<1)
ok=0,puts("数量错误");
if(price<-1||price==0)
ok=0,puts("价格错误");
if(!ok) return;
int id=candyList.addCandyKind(name);
// if(s.capacity()<id-1)
// {
// // std::cout<<"haha"<<std::endl;
// if(price==-1)
// {
// puts("新品必须定价");
// return;
// }
// s.resize(id+1);//仓库扩容
// s[id]=std::make_pair(num,price);
// return;
// }
s[id].first+=num;
sum+=num;
if(~price) s[id].second=price;//更新价格
}
int rmCandy(int id,int num,int pay)//卖糖
{
if(!id)
{
puts("查无此糖");
return 0;
}
if(s[id].first<num)
{
puts("数量不足");
return 0;
}
int totPrice=num*s[id].second;
if(pay<totPrice)
{
puts("钱不够");
return 0;
}
s[id].first-=num;
sum-=num;
return pay-totPrice;
}
}store;
class FrontPage{//前端
private:
inline void read(int &x)
{
int s = 0, w = 1;
char ch = getchar();
while (ch < '0' || ch > '9')
{
if (ch == '-')
w = -1;
ch = getchar();
}
while (ch >= '0' && ch <= '9')
s = s * 10 + ch - '0', ch = getchar();
x = s * w;
}
public:
FrontPage(){store.addCandy(std::string("默认糖"),10,10);}
void run()
{
printf("启动中");
for(int i=1;i<=5;i++)
system("sleep 0.1"),printf(".");
while(1)
{
system("cls");
if(store.getSum()) printf("营业中!\n买糖请输入1,");
else printf("缺货,");
puts("加糖请输入2");
int type=0;
read(type);//提高容错性
if(type==2)
{
if(!users.login()) continue;
puts("请输入品名");
std::string name;
std::cin>>name;
int id=candyList.queryId(name);
puts("请输入数量");
int num,price;
bool transPrice=0;
read(num);
if(!id)
puts("输入定价(分/个)"),read(price),transPrice=1;
else
{
printf("要更改该商品定价请输入1，保持原定价%d 分/个 请输入0\n",store.getPrice(id));
int temp;
read(temp);
if(temp)
{
puts("输入新定价(分/个)"),read(price),transPrice=1;
}
}
if(transPrice) store.addCandy(name,num,price);
else store.addCandy(name,num);
continue;
}
if(type==1)
{
puts("欢迎光临");
store.displayCandy();
puts("输入编号");
int id;
read(id);
puts("输入数量");
int num;
read(num);
puts("输入付款数量");
int pay;
read(pay);
int temp=store.rmCandy(id,num,pay);
if(temp) std::cout<<"给你找零"<<temp<<"分"<<std::endl<<"欢迎再次光临";
system("sleep 2");
system("cls");
continue;
}
puts("输入错误");
system("sleep 2");
}
}
};
int main()
{
FrontPage temp;
temp.run();
return 0;
}
