/**
    叶念西风: https://www.zhouws.com
 */
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "zffmpeg.h"
#include "zffaudio.h"
#include <QFileDialog>
#include <QMessageBox>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    connect(&UpdatePlayTime, SIGNAL(timeout()), this, SLOT(UpdatePlayTimeOut()));

    DisablePlay();
}

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

void MainWindow::on_BT_PlayOrPause_clicked()
{
    if (playing) {
        PausePlay();
        ZFFmpeg::getInstance()->pause();
        UpdatePlayTime.stop();
    } else {
        playing = true;

        Playing();

        ZFFmpeg::getInstance()->play();
        UpdatePlayTime.start(100);
    }
}

void MainWindow::UpdatePlayTimeOut() {
    if (playing) {
        if (ZFFmpeg::getInstance()->CheckIsStop()) {
            playing = false;
            ZFFmpeg::getInstance()->stop();
            ReadPlay();
            return;
        }
        int curMsec = ZFFmpeg::getInstance()->GetCurTimeMsec();

        if (videoTimeSilderPressed ==
            false) ui->videoTimeSilder->setValue(curMsec);
        INT curSec = curMsec / 1000;
        ui->LB_curTime->setText(QString("%1:%2").arg(curSec / 60, 2, 10,
                                                     QLatin1Char(
                                                         '0')).arg(
                                    curSec
                                    % 60,
                                    2, 10,
                                                     QLatin1Char(
                                        '0')));
    }
}

int MainWindow::LoadVideo() {
    // 定义文件对话框类
    QString fileName = QFileDialog::getOpenFileName(this,
                                                    tr("选择视频文件"),
                                                    tr("."),
                                                    tr(
                                                        "视频文件(*.mp4 *.flv *.avi);;所有文件(*.*)"));

    if (fileName.isEmpty()) {
        return -1;
    }

    //    bool res = FFVideo::getInstance()->OpenVideo(fileName,
    // ui->openGLWidget);
    bool res = ZFFmpeg::getInstance()->Load(fileName);
    ZFFaudio::getInstance()->init(ZFFmpeg::getInstance()->GetAudioSampleRate(),
                                  ZFFmpeg::getInstance()->GetAudioChannel(),
                                  ZFFmpeg::getInstance()->GetAudioSampleSize());

    if (!res) {
        QMessageBox::information(this, tr("警告"), tr("选择的视频文件无效"));
        return -1;
    }

    ReadPlay();

    ui->openGLWidget->resetParam();
    return 0;
}

void MainWindow::on_BT_open_clicked()
{
    LoadVideo();
}

void MainWindow::on_BT_Stop_clicked()
{
    playing = false;

    ZFFmpeg::getInstance()->stop();

    ReadPlay();
}

void MainWindow::playIsOverSlot() {}

void MainWindow::ReadPlay() {
    ui->BT_Stop->setEnabled(false);
    ui->videoTimeSilder->setEnabled(true);
    ui->BT_PlayOrPause->setEnabled(true);
    ui->BT_PlayOrPause->setText(tr("播放"));
    ui->videoTimeSilder->setValue(0);
    ui->LB_curTime->setText(QString("00:00"));
}

void MainWindow::Playing() {
    ui->BT_Stop->setEnabled(true);
    ui->videoTimeSilder->setEnabled(true);
    ui->BT_PlayOrPause->setText(tr("暂停"));
    ui->videoTimeSilder->setMaximum(ZFFmpeg::getInstance()->GetTotalTimeMsec());
    int totalMsec = ZFFmpeg::getInstance()->GetTotalTimeMsec();
    int totalSec = totalMsec / 1000;
    ui->LB_totalTime->setText(QString("%1:%2").arg(totalSec / 60, 2, 10,
                                                   QLatin1Char(
                                                       '0')).arg(
                                  totalSec
                                  % 60, 2,
                                  10,
                                                   QLatin1Char(
                                      '0')));
}

void MainWindow::PausePlay() {
    playing = false;
    ui->BT_Stop->setEnabled(true);
    ui->BT_PlayOrPause->setText(tr("播放"));
}

void MainWindow::DisablePlay() {
    ui->BT_Stop->setEnabled(false);
    ui->BT_PlayOrPause->setEnabled(false);
    ui->videoTimeSilder->setEnabled(false);

    ui->BT_PlayOrPause->setText(tr("播放"));
    ui->videoTimeSilder->setValue(0);
    ui->LB_curTime->setText(QString("00:00"));
    ui->LB_totalTime->setText(QString("00:00"));
}

void MainWindow::on_videoTimeSilder_sliderPressed()
{
    videoTimeSilderPressed = true;
}

void MainWindow::on_videoTimeSilder_sliderReleased()
{
    UpdatePlayTime.stop();
    videoTimeSilderPressed = false;
    qDebug("rel pos:%d", ui->videoTimeSilder->value());

    ZFFmpeg::getInstance()->seekPosByMs(ui->videoTimeSilder->value());

    // UpdatePlayTime.start(100);
    PausePlay();
}