#include "customer.h"
#include "login.h"
#include "registers.h"
#include "ui_customer.h"

/*
 * ID从数据库的提取
 */

customer::customer(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::customer)
{
    init();
}




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

void customer::paintEvent(QPaintEvent*)
{
    labelone->resize(ui->widget->size());
}

void customer::init()//初始化
{
    customer_id = "123";
    ui->setupUi(this);
    this->setFixedSize(1920,1080);
    this->setWindowTitle("用户界面");
    this->setWindowIcon(QIcon(":image/icon/logo"));//创造本界面
    lg = new login(this);
    lg->hide();
    rm = new ResetMessage(this);
    rm->hide();//创造副界面
    labelone = new QLabel(this);
    labelone->setScaledContents(true);
    labelone->setPixmap(QPixmap(":/image/bg/login.png"));
    labelone->lower();

    findall();
    flush_data(userinfo);//初始显示全部
    setmousehand();//装饰鼠标

    ui->Reservation1->setEnabled(false);
    ui->checking_out1->setEnabled(false);//初始退订按钮
    ui->tableWidget->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
    ui->tableWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);//表格不可编辑
}

void customer::setmousehand()//鼠标小手 完成
{
    ui->search->setCursor(QCursor(Qt::PointingHandCursor));
    ui->pushButton->setCursor(QCursor(Qt::PointingHandCursor));
    ui->Reservation1->setCursor(QCursor(Qt::PointingHandCursor));
    ui->checking_out1->setCursor(QCursor(Qt::PointingHandCursor));
}


void customer::on_checking_out1_clicked()//退房 完成
{
    int c = row;//总之是获取选中的行
    if( ui->tableWidget->model()->index(c,6).data().toString() == "123" ){
        QString QS = "空闲";
        QSqlQuery query((db));


        QString n = 0;
        n = ui->tableWidget->model()->index(c,0).data().toString();
        int num = n.toInt();

            query.prepare("UPDATE room set status=:QS where room_num = :num");
            query.bindValue(":QS",QS);
            query.bindValue(":num",num);
            query.exec();
            query.prepare("UPDATE room set checkout_time=NULL where room_num = :num");
            query.bindValue(":num",num);
            query.exec();
            query.prepare("UPDATE room set customer_id=NULL where room_num = :num");
            query.bindValue(":num",num);
            query.exec();//开始操作数据库

            if(c >= 0){
                QTableWidgetItem *Q1 = new QTableWidgetItem(QS);
                ui->tableWidget->setItem(c,4,Q1);
                ui->tableWidget->setItem(c,5,NULL);
                ui->tableWidget->setItem(c,6,NULL);
                Q1->setTextAlignment(Qt::AlignCenter);
                QMessageBox::about(this,"提示","退房成功");
                ui->Reservation1->setEnabled(true);
                ui->checking_out1->setEnabled(false);//开始操作表格
            }

    }
    else QMessageBox::about(this,"警告","不是本人操作");
}


void customer::on_Reservation1_clicked()//订房 id是什么
{
    int c = row;//总之是获取选中的行
    QString QS = "使用";
    QSqlQuery query((db));
    QString n = 0;
    n = ui->tableWidget->model()->index(c,0).data().toString();
    QDate d = QDate::currentDate();


    int num = n.toInt();
    query.prepare("UPDATE room set status=:QS where room_num = :num");
    query.bindValue(":QS",QS);
    query.bindValue(":num",num);
    query.exec();
    query.prepare("UPDATE room set checkout_time=DATE_ADD(:d, INTERVAL 1 DAY) where room_num = :num");
    query.bindValue(":d",d);
    query.bindValue(":num",num);
    query.exec();
    query.prepare("UPDATE room set customer_id=:id where room_num = :num");
    query.bindValue(":id",123);
    query.bindValue(":num",num);
    query.exec();

    if(c>=0){
        QTableWidgetItem *Q1 = new QTableWidgetItem(QS);
        ui->tableWidget->setItem(c,4,Q1);
        Q1->setTextAlignment(Qt::AlignCenter);

        QMessageBox::about(this,"提示","订房成功");
        ui->Reservation1->setEnabled(false);
        ui->checking_out1->setEnabled(true);
    }

}



void customer::on_pushButton_clicked()//修改 完成
{
    rm->show();
}

void customer::on_checkBox_clicked(bool checked)//装饰品
{
    if(checked){
        ui->tableWidget->horizontalHeader()->show();
    }
    else ui->tableWidget->horizontalHeader()->hide();
}

void customer::on_checkBox_2_clicked(bool checked)//装饰品
{
    if(checked){
        ui->tableWidget->verticalHeader()->show();
    }
    else ui->tableWidget->verticalHeader()->hide();
}

void customer::on_checkBox_3_clicked(bool checked)//装饰品
{
    if(checked){
        ui->tableWidget->setAlternatingRowColors(true);
    }
    else ui->tableWidget->setAlternatingRowColors(false);
}

void customer::findall()//显示全部 完成
{
    userinfo.clear();//清楚存储向量rec的向量的数据
    QSqlQuery query((db));
    query.prepare("select * from room");

    if(query.exec())
    {
         while (query.next()) {
             QVector<QString>rec;
             for(int i=0;i<query.record().count();i++)
             {

                 rec.push_back(query.record().value(i).toString());//将sql搜索到的一行记录塞入rec向量
             }
             userinfo.push_back(rec);//将rec向量塞入向量
         }
    }
}

void customer::flush_data(QVector<QVector<QString>>&userinfo)//插入数据 完成
{
    ui->tableWidget->clear();
    if(!userinfo.size())return;
    ui->tableWidget->setRowCount(userinfo.size());//行
    ui->tableWidget->setColumnCount(5);//列

    for(int i=0;i<userinfo.size();i++)
    {
        for(int j=0;j<userinfo[0].size();j++)
        {
            QTableWidgetItem *QW = new QTableWidgetItem(userinfo[i][j]);
            ui->tableWidget->setItem(i,j,QW);//行 列 内容
            QW->setTextAlignment(Qt::AlignCenter);//设置中心对齐
        }
    }
     ui->tableWidget->setHorizontalHeaderLabels({"房间号","房间类型","是否带窗","负责人","状态"});//设置表头
}

void customer::on_tableWidget_itemClicked(QTableWidgetItem *item)//点击表格格子         获取行数 完成
{
    row = item->row();
    if(ui->tableWidget->model()->index(row,4).data().toString() == "空闲"){
        ui->Reservation1->setEnabled(true);
        ui->checking_out1->setEnabled(false);
    }

    else if(ui->tableWidget->model()->index(row,4).data().toString() == "使用"){
        ui->checking_out1->setEnabled(true);
        ui->Reservation1->setEnabled(false);
    }
    else QMessageBox::about(this,"警告","未知错误");

}


void customer::on_search_clicked()//搜索 不能部分找到全部
{

   QString number=ui->lineEdit_2->text();
     if(number == NULL){
        findall();
        flush_data(userinfo);
    }

    else if(find_byname(number))
    {
        flush_data(userinfo);
        userinfo.clear();
    }else  QMessageBox::critical(nullptr, "错误", "未知的错误", QMessageBox::Retry);
}

bool customer::find_byname(QString n)//搜索?
{
    int number = n.toInt();
    userinfo.clear();
    QSqlQuery query(db);
       query.prepare("select * from room where room_num like :number;");//以开头搜索 不行
        query.bindValue(":number",number);
        if(query.exec())
        {
             while (query.next()) {
                 QVector<QString>rec;
                 rec.push_back(query.record().value("room_num").toString());
                 rec.push_back(query.record().value("type").toString());
                 rec.push_back(query.record().value("withwindow").toString());
                 rec.push_back(query.record().value("responsible_person").toString());
                 rec.push_back(query.record().value("status").toString());
                 rec.push_back(query.record().value("checkout_time").toString());
                 rec.push_back(query.record().value("customer_id").toString());

                 userinfo.push_back(rec);
             }
             return true;
        }
            return false;
}