#include <time.h>
#include <iostream>
#include <string>
#include <iomanip>
#include <fstream>
//#include “Book.h”
//#include “Admin.h”
#define MAXSIZE 10000
using namespace std;

//全局变量
string ID_Value;											//存储新建账户名
string ID[5];												//存储ID列表
int ID_flag;												//存储ID操作序号
fstream file;												//文件对象
void MainLoop();												//声明RUNTIME函数
//book.h
static int Bcount = 2;
static int Jcount = 2;
static double TTotal;
static int flag = 0;

class BookBase
{
private:
	string ISBN = "00000000";
	string Bname = "默认书籍";
	int stock = 0;
	double price = 0;
	double total = 0;
public:
	BookBase() {};
	BookBase(string is, string nam, int s, double p)
	{
		ISBN = is;
		Bname = nam;
		stock = s;
		price = p;
	}
	string getISBN() const { return ISBN; }
	string getName() const { return  Bname; }
	int getStock() const { return stock; }
	double getPrice() const { return price; }
	double getTotal() const { return total; }
	void modISBN(string i) { ISBN = i; }
	void modName(string n) { Bname = n; }
	void modStock(int st) { stock = st; }
	void modPrice(double pr) { price = pr; }
	void addStock(int s)
	{
		stock += s;
		cout << "库存增加成功！目前库存为：" << getStock() << endl;
	}
	void outStock(int s)
	{
		if (s <= stock)
		{
			stock -= s;
			cout << "销售成功！目前库存为：" << getStock() << endl;
			total = s * price;
			TTotal += total;
			cout << "销售额为：" << getTotal() << endl;
			flag = 1;
		}
		else
		{
			cerr << "库存不足，请检查，目前库存仅有" << getStock() << "。" << endl;
			return;
		}
	}
};

//期刊类
class Journal :public BookBase
{
private:
	string express;
public:
	Journal() {};
	Journal(string is, string nam, int s, double p, string exp) :BookBase(is, nam, s, p) { express = exp; }
	friend ostream& operator<<(ostream& output, const Journal& j);
	string getExpress() const { return express; }
	void modExpress(string ex) { express = ex; }
};

//输出流运算符重载
ostream& operator<<(ostream& output, const Journal& j)
{
	cout.setf(ios_base::left);
	output << j.getISBN() << "\t" << setw(25) << j.getName() << setw(20) << j.getExpress() << setw(15) << j.getPrice() << setw(15) << j.getStock() << endl;
	return output;
}

//书籍类
class Book :public BookBase
{
private:
	string author;
public:
	Book() {};
	Book(string is, string nam, int s, double p, string au) :BookBase(is, nam, s, p) { author = au; }
	friend ostream& operator<<(ostream& output, const Book& b);
	string getAuthor() const { return author; }
	void modAuthor(string au) { author = au; }
};

//输出流运算符重载
ostream& operator<<(ostream& output, const Book& b)
{
	cout.setf(ios_base::left);
	output << b.getISBN() << "\t" << setw(25) << b.getName() << setw(20) << b.getAuthor() << setw(15) << b.getPrice() << setw(15) << b.getStock() << endl;
	return output;
}

/*
 * 以上为书籍相关类及成员函数，以下为管理员类及其成员函数
 */
//Admin.h
class Admin
{
private:
	string ID;
public:
	Admin() {};
	string getID() const { return ID; }
	Admin(string id) { ID = id; cout << this->getID() << "，欢迎您登陆管理系统！所有权限已开启。" << endl; }
	void changeID(string id) { ID = id; }
	void AddBook();
	void DelBook();
	void SearchBook();
	void inStock();
	void outStock();
	void printAll();
	void statics();
	void modify();
	
};
//预置书籍类数据
static Book Books[MAXSIZE] = {
	Book("9787302257646","程序设计基础",190,25,"张三"),
	Book("9787302219972","单片机技术及应用",182,32,"李四")
};
//预置期刊类数据
static Journal Journals[MAXSIZE] = {
	Journal("9787302257611","电脑爱好者",200,32,"北京大学出版社"),
	Journal("9787302257622","无线电年刊",190,35,"江西财大出版社")
};
//输出所有Journal
void JournalsPrint()
{
	cout << "———————— 期刊类 ————————" << endl;
	cout.setf(ios_base::left);
	cout << "序号\tISBN\t\t"<<setw(25)<<"期刊名"<<setw(20)<<"出版社"<<setw(15)<<"价格"<<setw(15)<<"库存" << endl;
	for (int i = 0; i < Jcount; i++) cout << i + 1 << "\t" << Journals[i];
	cout << endl;
}
//输出所有Book
void BooksPrint()
{
	cout << "———————— 书籍类 ————————" << endl;
	cout.setf(ios_base::left);
	cout << "序号\tISBN\t\t" << setw(25) << "书名" << setw(20) << "作者" << setw(15) << "价格" << setw(15) << "库存" << endl;
	for (int i = 0; i < Bcount; i++) cout << i + 1 << "\t" << Books[i];
	cout << endl;
}
void Admin::statics()
{
	char c;
	if (flag) 
	{
		cout << "------------------------------------------" << endl;
		cout << setw(25) << internal << "销售统计" << endl;
		cout << "总销售额：" << TTotal << endl;
		cout << "是否将销售额导出至文件？（Y/N）"; cin >> c;
		if(c=='Y' || c=='y')
		{
			ofstream file;
			file.open("销售额.txt", ios::out);
			file << "总销售额：" << TTotal << endl;
			file.close();
			cout << "导出成功！" << endl;
		}
		cout << "------------------------------------------" << endl;
	}
	else
	{
		cerr << "无任何销售记录！" << endl;
	}
	
}
//添加新书籍
void NewBook()
{
	string ISBN;
	string Bname;
	int stock;
	double price;
	string author;
	cout << "------------------------------------------" << endl;
	cout << "正在添加新的书籍信息，当前已有书籍数目:" << Bcount << endl;
	cout << "输入ISBN号："; cin >> ISBN;
	cout << "请输入书名："; cin >> Bname;
	cout << "请输入库存："; cin >> stock;
	cout << "请输入价格："; cin >> price;
	cout << "请输入作者名："; cin >> author;
	Books[Bcount] = Book(ISBN, Bname, stock, price, author);
	Bcount++;
	cout << "添加成功！" << endl;
}
//添加新期刊
void NewJournal()
{
	string ISBN;
	string Bname;
	int stock;
	double price;
	string express;
	cout << "正在添加新的期刊信息，当前已有期刊数目:" << Bcount << endl;
	cout << "输入ISBN号："; cin >> ISBN;
	cout << "请输入期刊名："; cin >> Bname;
	cout << "请输入库存："; cin >> stock;
	cout << "请输入价格："; cin >> price;
	cout << "请输入作者名："; cin >> express;
	Journals[Jcount] = Journal(ISBN, Bname, stock, price, express);
	Jcount++;
	cout << "添加成功！" << endl;
}
//增加书刊
void Admin::AddBook()
{
	int select = 1;
	cout << setw(20) << ">>>>>>>>>>增加书刊<<<<<<<<<<" << endl
		<< setw(20) << "1.书籍类" << endl
		<< setw(20) << "2.期刊类" << endl
		<< setw(20) << "0.退出该操作" << endl;
	while (select)
	{
		cout << "要对哪类进行增加操作（输入0返回主菜单）:";
		cin >> select;
		if (select < 0 || select > 2)
		{
			cerr << "非法值，请重新输入。" << endl;
			continue;
		}
		else
		{
			switch (select)
			{
			case 1: NewBook(); continue;
			case 2: NewJournal(); continue;
			case 0: break;
			}
		}
	}
}
//删除书刊 
void Admin::DelBook()
{
	string s = "1";
	while (1) {
		cout << "请输入作者名、出版社名、期刊名、书名或ISBN号（输入0返回主菜单）：";
		cin >> s;
		if (s == "0") break;									//退出判断
		int flag = 0;										//查找成功状态符
		//查找书籍类
		for (int i = 0; i < Bcount; i++)
			if (Books[i].getAuthor() == s || Books[i].getISBN() == s || Books[i].getName() == s)
			{
				flag = 1;
				cout << "发现目标书籍如下，是否删除该书籍信息？（Y 是 / N 否）"
					<< endl << "------------------------"
					<< endl << Books[i] << "------------------------" << endl << "请选择：";
				char c; cin >> c;
				if (c == 'Y' || c == 'y')
				{
					for (int j = i; j < Bcount - 1; j++)
					{
						Books[j] = Books[j + 1];
					}
					Bcount--;
				}
				else continue;
			}
			else continue;
		//查找期刊类
		for (int i = 0; i < Jcount; i++)
			if (Journals[i].getExpress() == s || Journals[i].getISBN() == s || Journals[i].getName() == s)
			{
				flag = 1;
				cout << "发现目标期刊如下，是否删除该期刊信息？（Y 是 / N 否）"
					<< endl << "------------------------"
					<< endl << Journals[i] << "------------------------" << endl << "请选择：";
				char c; cin >> c;
				if (c == 'Y' || c == 'y')
				{
					for (int j = i; j < Jcount - 1; j++)
					{
						Journals[j] = Journals[j + 1];
					}
					Jcount--;
				}
				else continue;
			}
			else continue;
		if (flag)cout << "删除成功！" << endl;
		else cerr << "未找到目标书籍。" << endl;
	}
}
//入库
void Admin::inStock()
{
	int select = 1;
	cout << setw(20) << ">>>>>>>>>>入库书刊<<<<<<<<<<" << endl
		<< setw(20) << "1.书籍类" << endl
		<< setw(20) << "2.期刊类" << endl
		<< setw(20) << "0.退出该操作" << endl;
	while (select)
	{
		cout << "要对哪类进行入库操作（输入0返回主菜单）:";
		cin >> select;
		if (select < 0 || select > 2)
		{
			cerr << "非法值，请重新输入。" << endl;
			continue;
		}
		else
		{
			switch (select)
			{
			case 1:
				{
					BooksPrint();
					int a, b;
					cout << "要操作的书籍编号是："; cin >> a; 
					if (a<1 || a>Bcount)
					{
						cerr << "序号错误，请检查。" << endl;
						break;
					}
					cout << "要增加的库存量是："; cin >> b;
					Books[a - 1].addStock(b);
					continue;
				}
			case 2:
			{
				JournalsPrint();
				int a, b;
				cout << "要操作的期刊编号是："; cin >> a;
				if (a<1 || a>Jcount)
				{
					cerr << "序号错误，请检查。" << endl;
					break;
				}
				cout << "要增加的库存量是："; cin >> b;
					Books[a - 1].addStock(b);
					continue;
			}
			case 0: break;
			}
		}
	}
}
//修改书籍类
void modifyBook()
{
	int select = 1;
	BooksPrint();
	int a, b;
	string s;
	int st;
	double pr;
	cout << "要操作的书籍编号是："; cin >> a;
	if (a<1 || a>Bcount)
	{
		cerr << "序号错误，请检查。" << endl;
	}
	else
	{
		cout << "1.ISBN\t2.书籍名称\t3.作者\t4.库存量\t5.价格\t0.放弃修改" << endl << "要修改的信息是："; cin >> b;
		switch (b)
		{
		case 1: cout << "输入修改后的信息："; cin >> s; Books[a - 1].modISBN(s); cout << Books[a - 1] << "修改成功！" << endl; break;
		case 2: cout << "输入修改后的信息："; cin >> s; Books[a - 1].modName(s); cout << Books[a - 1] << "修改成功！" << endl; break;
		case 3: cout << "输入修改后的信息："; cin >> s; Books[a - 1].modAuthor(s); cout << Books[a - 1] << "修改成功！" << endl; break;
		case 4: cout << "输入修改后的信息："; cin >> st; Books[a - 1].modStock(st); cout << Books[a - 1] << "修改成功！" << endl; break;
		case 5: cout << "输入修改后的信息："; cin >> pr; Books[a - 1].modPrice(pr); cout << Books[a - 1] << "修改成功！" << endl; break;
		case 0: break;
		}
	}
}
//修改期刊类
void modifyJournal()
{
	int select = 1;
	JournalsPrint();
	int a, b;
	string s;
	int st;
	double pr;
	cout << "要操作的书籍编号是："; cin >> a;
	if (a<1 || a>Bcount)
	{
		cerr << "序号错误，请检查。" << endl;
	}
	else
	{
		cout << "1.ISBN\t2.书籍名称\t3.出版社\t4.库存量\t5.价格\t0.放弃修改" << endl << "要修改的信息是："; cin >> b;
		switch (b)
		{
		case 1: cout << "输入修改后的信息："; cin >> s; Journals[a - 1].modISBN(s); cout << Journals[a - 1] << "修改成功！" << endl; break;
		case 2: cout << "输入修改后的信息："; cin >> s; Journals[a - 1].modName(s); cout << Journals[a - 1] << "修改成功！" << endl; break;
		case 3: cout << "输入修改后的信息："; cin >> s; Journals[a - 1].modExpress(s); cout << Journals[a - 1] << "修改成功！" << endl; break;
		case 4: cout << "输入修改后的信息："; cin >> st; Journals[a - 1].modStock(st); cout << Journals[a - 1] << "修改成功！" << endl; break;
		case 5: cout << "输入修改后的信息："; cin >> pr; Journals[a - 1].modPrice(pr); cout << Journals[a - 1] << "修改成功！" << endl; break;
		case 0: break;
		}
	}
}
//修改书籍信息
void Admin::modify()
{
	int select = 1;
	cout << setw(20) << ">>>>>>>>>>修改书刊信息<<<<<<<<<<" << endl
		<< setw(20) << "1.书籍类" << endl
		<< setw(20) << "2.期刊类" << endl
		<< setw(20) << "0.退出该操作" << endl;
	while (select)
	{
		cout << "要对哪类进行修改操作（输入0返回主菜单）:";
		cin >> select;
		if (select < 0 || select > 2)
		{
			cerr << "非法值，请重新输入。" << endl;
			continue;
		}
		else
		{
			switch (select)
			{
			case 1: modifyBook(); continue;
			case 2: modifyJournal(); continue;
			case 0: break;
			}
		}
	}
}
//入库
void Admin::outStock()
{
	int select = 1;
	cout << setw(20) << ">>>>>>>>>>销售书刊<<<<<<<<<<" << endl
		<< setw(20) << "1.书籍类" << endl
		<< setw(20) << "2.期刊类" << endl
		<< setw(20) << "0.退出该操作" << endl;
	while (select)
	{
		cout << "要对哪类进行销售操作（输入0返回主菜单）:";
		cin >> select;
		if (select < 0 || select > 2)
		{
			cerr << "非法值，请重新输入。" << endl;
			continue;
		}
		else
		{
			switch (select)
			{
			case 1:
			{
				BooksPrint();
				int a, b;
				cout << "要操作的书籍序号是："; cin >> a;
				if(a<1 || a>Bcount)
				{
					cerr << "序号错误，请检查。" << endl;
					break;
				}
				cout << "销售的库存量是："; cin >> b;
				Books[a - 1].outStock(b);
				continue;
			}
			case 2:
			{
				JournalsPrint();
				int a, b;
				cout << "要操作的期刊序号是："; cin >> a;
				if (a<1 || a>Jcount)
				{
					cerr << "序号错误，请检查。" << endl;
					break;
				}
				cout << "要销售的库存量是："; cin >> b;
				Books[a - 1].outStock(b);
				continue;
			}
			case 0: break;
			}
		}
	}
}
//输出所有库存
inline void Admin::printAll()
{
	BooksPrint();
	JournalsPrint();
}
//输出ID.txt
void ID_OUT()
{
	file.open("ID.txt", ios::out);
	if (!file)
	{
		cerr << "未检测到账户列表文件ID.txt！保存失败。" << endl;
		exit(1);
	}
	for (int i = 0; i < 5; i++)
		file << ID[i] << endl;
	file.close();
}
//读入ID.txt
void ID_IN()
{
	file.open("ID.txt", ios::in);
	if (!file)
	{
		cerr << "未检测到预置账户列表文件ID.txt，请查看源代码末端的注释，现已使用默认测试账户登录。" << endl;
		ID_Value = "超级管理员";
		MainLoop();
	}
	for (int i = 0; i < 5; i++)
		file >> ID[i];
	file.close();
}
//切换账户
void ID_Switch()
{
	ID_IN();
	for (int i = 0; i < 5; i++)
		cout << i + 1 << "\t" << ID[i] << endl;
	cout << "请选择要登录的账户：";	cin >> ID_flag;

	if (ID_flag == 5 && ID[ID_flag-1] == "选此项以新建账户")
	{
		string tmp;
		cout << "请输入新账户的ID："; cin >> tmp;
		ID[4] = ID_Value = tmp;
		cout << "新建账户成功并已写入账户列表！您现在拥有所有权限。" << endl;
		ID_OUT();
	}
	else if (ID_flag < 1 || ID_flag>5)
	{
		cerr << "该账户不存在！程序将退出。" << endl;
		abort();
	}
	else ID_Value = ID[ID_flag - 1];
	cout << "-----------------------------------------------" << endl;
}
//导出库存信息
void fileOut()
{
	file.open("书籍.txt", ios::out);
	file<<"ISBN\t\t" << setw(25) << "书名" << setw(20) << "作者" << setw(15) << "价格" << setw(15) << "库存" << endl;
	for (int i = 0; i < Bcount; i++) file << Books[i];
	file.close();
	file.open("期刊.txt", ios::out);
	cout.setf(ios_base::left);
	file << "ISBN\t\t" << setw(25) << "期刊名" << setw(20) << "出版社" << setw(20) << "价格" << setw(15) << "库存" << endl;
	for (int i = 0; i < Jcount; i++)file << Journals[i];
	cout << "已成功输出为'书籍.txt'与'期刊.txt'" << endl;
	file.close();
}
//欢迎
void MainLoop()
{
	cout << "==============================="
		<< endl << setw(30) << "欢迎使用小型书店进销存管理系统"
		<< endl << "==============================="
		<< endl << "注：该程序仅用于江西财经大学张老师《C++程序设计语言》课程之期末综合性实验报告，作者：刘燕、李溦、钟琳"
		<< endl << "-----------------------------------------------"
		<< endl << "预置账户列表：" << endl;
	ID_Switch();
	MainLoop();
}
//运行中函数
void MainLoop()
{
	Admin admin(ID_Value);
	int select = 1;
	while (select)
	{
		cout << setw(20) << "————————————————" << endl
			<< "当前用户：" << admin.getID() << endl
			<< "1.查看当前库存" << endl
			<< "2.增加书刊信息" << endl
			<< "3.修改书刊信息" << endl
			<< "4.删除书刊信息" << endl
			<< "5.增加书刊库存" << endl
			<< "6.书刊销售系统" << endl
			<< "7.当前财务统计" << endl
			<< "8.更改管理员ID" << endl
			<< "9.切换登录账户" << endl
			<< "10.将库存信息输出至文件" << endl
			<< "0.退出书店系统" << endl
			<< setw(20) << "————————————————" << endl;
		cout << "请输入操作序号：";
		cin >> select;
		if (select < 0 || select >10)
		{
			cerr << "非法值，请重新输入。" << endl;
			continue;
		}
		else
		{
			switch (select)
			{
			case 1: admin.printAll(); continue;
			case 2: admin.AddBook(); continue;
			case 3: admin.modify();continue;
			case 4: admin.DelBook(); continue;
			case 5: admin.inStock(); continue;
			case 6: admin.outStock(); continue;
			case 7: admin.statics(); continue;
			case 8:
			{
				string id;
				cout << "输入目标ID：";
				cin >> id;
				admin.changeID(id);
				ID[ID_flag - 1] = id;
				cout << "更改成功！当前ID为" << id << endl;
				ID_OUT();
				continue;
			}
			case 9: system("cls"); MainLoop(); break;
			case 10: fileOut(); continue;
			case 0: break;
			}
		}
	}
}
//主函数
int main()
{
	MainLoop();
	return 0;
}

/* 本程序使用外部文件实现了预置账户切换功能模块，该文件如下:
** 可将下方附件置于编译完成的exe文件目录中，但由于做了异常处理，缺失文件不会导致程序不可用
** ID.txt
超级管理员
刘燕
李溦
钟琳
选此项以新建账户
*/