#include"workerManager.h"
#include"employee.h"
#include"boss.h"
#include"manager.h"
#include"worker.h"
#include<fstream>

WorkerManager::WorkerManager() {

	//初始化属性
	this->m_EmpArray = NULL;
	this->m_EmpNum = 0;
	//1、文件不存在
	ifstream ifs;
	ifs.open(FILENAME, ios::in);	//读文件

	if (!ifs.is_open()) {
		//cout << "文件不存在" << endl;
		this->m_EmpArray = NULL;
		this->m_EmpNum = 0;
		this->m_FileIsEmpty = true;
		ifs.close();
		return;
	}

	//2、文件存在 数据为空
	char ch;
	ifs >> ch;
	if (ifs.eof()) {
		//文件为空
		//cout << "文件为空！" << endl;
		this->m_EmpArray = NULL;
		this->m_EmpNum = 0;
		this->m_FileIsEmpty = true;
		ifs.close();
		return;
	}

	//文件存在，并且记录数据
	int num = this->get_EmpNum();
	//cout << "职工的人数为: " << num << endl;
	this->m_EmpNum = num;

	//开辟空间
	this->m_EmpArray = new Worker * [this->m_EmpNum];
	//将文件中的数据，存到数组中
	this->init_Emp();

	//测试代码
	//for (int i = 0; i < this->m_EmpNum; i++) {
	//	cout << "职工编号： " << this->m_EmpArray[i]->m_Id
	//		<< "姓名： " << this->m_EmpArray[i]->m_Name
	//		<< "部门编号： " << this->m_EmpArray[i]->m_DeptId << endl;
	//}


}

void WorkerManager::Show_Menu() {
	cout << "********************************************" << endl;
	cout << "*********  欢迎使用职工管理系统！ **********" << endl;
	cout << "*************  0.退出管理程序  *************" << endl;
	cout << "*************  1.增加职工信息  *************" << endl;
	cout << "*************  2.显示职工信息  *************" << endl;
	cout << "*************  3.删除离职职工  *************" << endl;
	cout << "*************  4.修改职工信息  *************" << endl;
	cout << "*************  5.查找职工信息  *************" << endl;
	cout << "*************  6.按照编号排序  *************" << endl;
	cout << "*************  7.清空所有文档  *************" << endl;
	cout << "********************************************" << endl;
	cout << endl;
}

void WorkerManager::ExitSystem() {
	cout << "欢迎下次使用" << endl;
	system("pause");
	exit(0);	//退出程序
}

void WorkerManager::ADD_Emp() {
	cout << "请输入添加职工数量： " << endl;
	int addNum = 0;	//保存用户的输入数量
	cin >> addNum;

	if (addNum > 0) {
		//添加
		//计算添加新空间大小
		int newSize = this->m_EmpNum + addNum;	//原纪录人数+新增人数

		//开辟新空间
		Worker** newSpace = new Worker * [newSize];

		//将原来空间下数据，拷贝到新空间下
		if (this->m_EmpArray != NULL) {
			for (int i = 0; i < this->m_EmpNum; i++) {
				newSpace[i] = this->m_EmpArray[i];
			}
		}
		//批量添加新数据
		for (int i = 0; i < addNum; i++) {
			int id;	//职工编号
			string name;	//职工姓名
			int deSelect;	//部门选择

			cout << "请输入第" << i + 1 << "个新职工编号： " << endl;
			cin >> id;

			cout << "请输入第" << i + 1 << "个新职工姓名： " << endl;
			cin >> name;

			cout << "请选择该职工岗位： " << endl;
			cout << "1、普通职工" << endl;
			cout << "2、经理" << endl;
			cout << "3、老板" << endl;
			cin >> deSelect;

			Worker* worker = NULL;
			switch (deSelect)
			{
			case 1:
				worker = new Employee(id, name, 1);
				break;
			case 2:
				worker = new Manager(id, name, 2);
				break;
			case 3:
				worker = new Boss(id, name, 3);
				break;
			default:
				break;
			}
			//将创建的职工指针，保存到数组中
			newSpace[this->m_EmpNum + i] = worker;
		}
		//释放原有空间
		delete[] this->m_EmpArray;

		//更改新空间的指向
		this->m_EmpArray = newSpace;

		//更新新的职工人数
		this->m_EmpNum = newSize;

		//提示添加成功
		cout << "成功添加" << "名新职工" << endl;

		//保存数据到文件中
		this->save();

		this->m_FileIsEmpty = false;
	}
	else {
		cout << "输入有误" << endl;
	}
	//按任意键后 清屏回到上级目录
	system("pause");
	system("cls");
}

//保存文件
void WorkerManager::save() {
	ofstream ofs;
	ofs.open(FILENAME, ios::out); //用输出的方式打开文件 --写文件

	//将每个人数据写入到文件中
	for (int i = 0; i < this->m_EmpNum; i++) {
		ofs << this->m_EmpArray[i]->m_Id << " "
			<< this->m_EmpArray[i]->m_Name << " "
			<< this->m_EmpArray[i]->m_DeptId << endl;
	}
	//关闭文件
	ofs.close();
}

//统计文件中的人数
int WorkerManager::get_EmpNum() {
	ifstream ifs;
	ifs.open(FILENAME, ios::in);	//打开文件 读

	int id;
	string name;
	int dId;

	int num = 0;
	while (ifs>>id&&ifs>>name&&ifs>>dId)
	{
		//统计人数变量
		num++;
	}
	return num;
}

//初始化员工
void WorkerManager::init_Emp() {
	ifstream ifs;
	ifs.open(FILENAME, ios::in);	//打开文件 读

	int id;
	string name;
	int dId;

	int index = 0;
	while (ifs >> id && ifs >> name && ifs >> dId)
	{
		Worker* worker = NULL;
		switch (dId)
		{
		case 1:
			worker = new Employee(id, name, dId);
			break;
		case 2:
			worker = new Manager(id, name, dId);
			break;
		case 3:
			worker = new Boss(id, name, dId);
			break;
		default:
			break;
		}
		this->m_EmpArray[index] = worker;
		index++;
	}

	//关闭文件
	ifs.close();
}

//显示职工
void WorkerManager::Show_Emp() {
	if (this->m_FileIsEmpty) {
		cout << "文件不存在或记录为空！" << endl;
	}
	else {
		for (int i = 0; i < m_EmpNum; i++) {
			this->m_EmpArray[i]->showInfo();
		}
	}
	system("pause");
	system("cls");
}

int WorkerManager::IsExist(int id)
{
	int index = -1;

	for (int i = 0; i < this->m_EmpNum; i++)
	{
		if (this->m_EmpArray[i]->m_Id == id)
		{
			index = i;

			break;
		}
	}

	return index;
}


//删除职工
void WorkerManager::Del_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空！" << endl;
	}
	else
	{
		//按职工编号删除
		cout << "请输入想要删除的职工号：" << endl;
		int id = 0;
		cin >> id;

		int index = this->IsExist(id);

		if (index != -1)  //说明index上位置数据需要删除
		{
			for (int i = index; i < this->m_EmpNum - 1; i++)
			{
				this->m_EmpArray[i] = this->m_EmpArray[i + 1];
			}
			this->m_EmpNum--;

			this->save(); //删除后数据同步到文件中
			cout << "删除成功！" << endl;
		}
		else
		{
			cout << "删除失败，未找到该职工" << endl;
		}
	}

	system("pause");
	system("cls");
}

//修改职工
void WorkerManager::Mod_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空！" << endl;
	}
	else
	{
		cout << "请输入修改职工的编号：" << endl;
		int id;
		cin >> id;

		int ret = this->IsExist(id);
		if (ret != -1)
		{ 
			//查找到编号的职工
			cout << "查到： " << id << "号职工" << endl;
			this->m_EmpArray[ret]->showInfo();

			delete this->m_EmpArray[ret];
			
			int newId = 0;
			string newName = "";
			int dSelect = 0;

			cout << "请输入新职工号： " << endl;
			cin >> newId;

			cout << "请输入新姓名： " << endl;
			cin >> newName;

			cout << "请输入岗位： " << endl;
			cout << "1、普通职工" << endl;
			cout << "2、经理" << endl;
			cout << "3、老板" << endl;
			cin >> dSelect;

			Worker * worker = NULL;
			switch (dSelect)
			{
			case 1:
				worker = new Employee(newId, newName, dSelect);
				break;
			case 2:
				worker = new Manager(newId, newName, dSelect);
				break;
			case 3:
				worker = new Boss(newId, newName, dSelect);
				break;
			default:
				break;
			}

			//更改数据 到数组中
			this->m_EmpArray[ret]= worker;
			
			cout << "修改成功！" << endl;

			//保存到文件中
			this->save();
		}
		else
		{
			cout << "修改失败，查无此人" << endl;
		}
	}

	//按任意键 清屏
	system("pause");
	system("cls");
}

//查找职工
void WorkerManager::Find_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空！" << endl;
	}
	else
	{
		cout << "请输入查找的方式：" << endl;
		cout << "1、按职工编号查找" << endl;
		cout << "2、按姓名查找" << endl;

		int select = 0;
		cin >> select;


		if (select == 1) //按职工号查找
		{
			int id;
			cout << "请输入查找的职工编号：" << endl;
			cin >> id;

			int ret = IsExist(id);
			if (ret != -1)
			{
				cout << "查找成功！该职工信息如下：" << endl;
				this->m_EmpArray[ret]->showInfo();
			}
			else
			{
				cout << "查找失败，查无此人" << endl;
			}
		}
		else if (select == 2) //按姓名查找
		{
			string name;
			cout << "请输入查找的姓名：" << endl;
			cin >> name;

			bool flag = false;  //查找到的标志
			for (int i = 0; i < m_EmpNum; i++)
			{
				if (m_EmpArray[i]->m_Name == name)
				{
					cout << "查找成功,职工编号为："
						<< m_EmpArray[i]->m_Id
						<< " 号的信息如下：" << endl;

					flag = true;

					this->m_EmpArray[i]->showInfo();
				}
			}
			if (flag == false)
			{
				//查无此人
				cout << "查找失败，查无此人" << endl;
			}
		}
		else
		{
			cout << "输入选项有误" << endl;
		}
	}


	system("pause");
	system("cls");
}

//排序职工
void WorkerManager::Sort_Emp()
{
	if (this->m_FileIsEmpty)
	{
		cout << "文件不存在或记录为空！" << endl;
		system("pause");
		system("cls");
	}
	else
	{
		cout << "请选择排序方式： " << endl;
		cout << "1、按职工号进行升序" << endl;
		cout << "2、按职工号进行降序" << endl;

		int select = 0;
		cin >> select;


		for (int i = 0; i < m_EmpNum; i++)
		{
			int minOrMax = i;
			for (int j = i + 1; j < m_EmpNum; j++)
			{
				if (select == 1) //升序
				{
					if (m_EmpArray[minOrMax]->m_Id > m_EmpArray[j]->m_Id)
					{
						minOrMax = j;
					}
				}
				else  //降序
				{
					if (m_EmpArray[minOrMax]->m_Id < m_EmpArray[j]->m_Id)
					{
						minOrMax = j;
					}
				}
			}

			if (i != minOrMax)
			{
				Worker* temp = m_EmpArray[i];
				m_EmpArray[i] = m_EmpArray[minOrMax];
				m_EmpArray[minOrMax] = temp;
			}

		}

		cout << "排序成功,排序后结果为：" << endl;
		this->save();
		this->Show_Emp();
	}

}

//清空文件
void WorkerManager::Clean_File()
{
	cout << "确认清空？" << endl;
	cout << "1、确认" << endl;
	cout << "2、返回" << endl;

	int select = 0;
	cin >> select;

	if (select == 1)
	{
		//打开模式 ios::trunc 如果存在删除文件并重新创建
		ofstream ofs(FILENAME, ios::trunc);
		ofs.close();

		if (this->m_EmpArray != NULL)
		{
			for (int i = 0; i < this->m_EmpNum; i++)
			{
				if (this->m_EmpArray[i] != NULL)
				{
					delete this->m_EmpArray[i];
				}
			}
			this->m_EmpNum = 0;
			delete[] this->m_EmpArray;
			this->m_EmpArray = NULL;
			this->m_FileIsEmpty = true;
		}
		cout << "清空成功！" << endl;
	}

	system("pause");
	system("cls");
}

WorkerManager::~WorkerManager() {
	if (this->m_EmpArray != NULL)
	{
		delete[] this->m_EmpArray;
	}
}