#include "frmemplist.h"
#include "ui_frmemplist.h"
#include "employeecontainer.h"
#include "frmupdate.h"

FrmEmpList::FrmEmpList(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::FrmEmpList)
{
    ui->setupUi(this);
    //让table使用我们自定义的menu
    connect(ui->tblList, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(showMenu(QPoint)));
    showData();

}

//读取本地数据
void FrmEmpList::readData()
{
    ifstream ifs("Employee_list.txt", ios::in);
        if (ifs)
        {
            vector <Employee*>().swap(*EmployeeContainer::employeelist);
            string line;
            int a = 1;
            int id;
            string name;
            string phone;
            string depart;
            string s;
            while (ifs >> s) {
                    if (a%4 == 1) {
                        id = atoi(s.c_str());
                    }
                    else if (a%4 == 2) {
                        name = s;
                    }
                    else if (a%4 == 3) {
                        phone = s;
                    }
                    else if (a%4 == 0) {
                        depart = s;
                        Employee *emp = new Employee(id, name, phone, depart);
                        EmployeeContainer::employeelist->push_back(emp);
                    }
                    ++a;
                }
            QMessageBox::information(this, "提示", "读取成功!");
        }
        else
        {
            //无数据时，提示报错
            QMessageBox::critical(this, "提示", "无本地数据!");
        }
        ifs.close();
}

FrmEmpList::~FrmEmpList()
{
    delete ui;
}

void FrmEmpList::findOne()
{
    ui->tblList->clear();
    int j = 0;
    string name = ui->letFind->text().toStdString();
    for (int i = 0; i < EmployeeContainer::employeelist->size(); i++) {
        Employee *emp = EmployeeContainer::employeelist->at(i);
        //emp里的数据的类型是C++，将C++类型转成QString
        if(emp->name == name)
        {
            QStringList header;
            header << "编号" << "姓名" << "手机" << "部门";
            ui->tblList->setHorizontalHeaderLabels(header);
            ui->tblList->setRowCount(j+1);
            ui->tblList->setItem(j, 0, new QTableWidgetItem(QString::number(emp->id)));
            ui->tblList->setItem(j, 1, new QTableWidgetItem(QString::fromStdString(emp->name)));
            ui->tblList->setItem(j, 2, new QTableWidgetItem(QString::fromStdString(emp->phone)));
            ui->tblList->setItem(j, 3, new QTableWidgetItem(QString::fromStdString(emp->depart)));
            place[j] = i;
            j++;
        }
    }
}

void FrmEmpList::showData()
{
    //构建一个表头
    ui->tblList->clear();
    QStringList header;
    header << "编号" << "姓名" << "手机" << "部门";
    ui->tblList->setHorizontalHeaderLabels(header);
    ui->tblList->setRowCount(EmployeeContainer::employeelist->size());
    for (int i = 0; i < EmployeeContainer::employeelist->size(); i++) {
        Employee *emp = EmployeeContainer::employeelist->at(i);
        //emp里的数据的类型是C++，将C++类型转成QString
        ui->tblList->setItem(i, 0, new QTableWidgetItem(QString::number(emp->id)));
        ui->tblList->setItem(i, 1, new QTableWidgetItem(QString::fromStdString(emp->name)));
        ui->tblList->setItem(i, 2, new QTableWidgetItem(QString::fromStdString(emp->phone)));
        ui->tblList->setItem(i, 3, new QTableWidgetItem(QString::fromStdString(emp->depart)));
    }
}

void FrmEmpList::saveData()
{
    if(QMessageBox::Yes == QMessageBox::question(this, "保存提示", "本地已有数据，是否覆盖？", QMessageBox::Yes | QMessageBox::No)){
        ofstream ofs("Employee_list.txt", ios::out);
        for (int i = 0;i < EmployeeContainer::employeelist->size(); i++)
        {
            Employee *emp = EmployeeContainer::employeelist->at(i);
            string id = to_string(emp->id);
            history_one = id + " " + emp->name + " " + emp->phone + " " + emp->depart;
            ofs << history_one << endl;
        }
        QMessageBox::information(this, "提示", "保存成功!");
        ofs.close();
    }
}

void FrmEmpList::showMenu(const QPoint pos)
{
    QMenu *menu = new QMenu(ui->tblList);
    QAction *actDelete = new QAction("删除", ui->tblList);
    QAction *actChange = new QAction("修改", ui->tblList);
    menu->addAction(actDelete);
    menu->addAction(actChange);
    // 将鼠标移到光标位置
    menu->move(cursor().pos());
    menu->show();
    //获取用户点了第几行
    QModelIndex index = ui->tblList->indexAt(pos);
    //取得行号
    int row = index.row();
    //处理action的功能，让actDelete控件与函数绑定
    //删除用户点击的行
    if(!isFind){
        connect(actDelete, &QAction::triggered, [=](){
            //确认用户是否删除
            if(QMessageBox::Yes == QMessageBox::question(this, "删除提示", "确定删除嘛？", QMessageBox::Yes | QMessageBox::No)){
                    if(row >= 0){
                        //通过迭代器和row删除
                        EmployeeContainer::employeelist->erase(EmployeeContainer::employeelist->begin() + row);
                        QMessageBox::information(this, "提示", "删除成功!");
                        showData();//刷新数据
                    }else{
                        QMessageBox::critical(this, "提示", "未选中任何数据!");
                    }
            }
        });
        //修改
        connect(actChange, &QAction::triggered, [=](){
            //确认用户是否删除
            if(row >= 0){
                //通过迭代器和row
                FrmUpdate *u = new FrmUpdate(row);
                u->show();
                showData();//刷新数据
            }else{
                QMessageBox::critical(this, "提示", "未选中任何数据!");
            }
        });
        showData();//刷新数据
    }
    else
    {
        connect(actDelete, &QAction::triggered, [=](){
            //确认用户是否删除
            if(QMessageBox::Yes == QMessageBox::question(this, "删除提示", "确定删除嘛？", QMessageBox::Yes | QMessageBox::No)){
                    if(row >= 0){
                        EmployeeContainer::employeelist->erase(EmployeeContainer::employeelist->begin() + place[row]);
                        QMessageBox::information(this, "提示", "删除成功!");
                        findOne();//刷新数据
                    }else{
                        QMessageBox::critical(this, "提示", "未选中任何数据!");
                    }
            }
        });
        //修改
        connect(actChange, &QAction::triggered, [=](){
            //确认用户是否删除
            if(row >= 0){
                //通过迭代器和row
                FrmUpdate *u = new FrmUpdate(place[row]);
                u->show();
                findOne();//刷新数据
            }else{
                QMessageBox::critical(this, "提示", "未选中任何数据!");
            }
        });
        findOne();//刷新数据
    }
}

void FrmEmpList::on_btnSearch_clicked()
{
    isFind = true;
    findOne();

}

void FrmEmpList::on_pushButton_clicked()
{
    isFind = false;
    showData();
}