#include <chrono>
#include <string>
#include <thread>
#include <iomanip>

#include "code/base/logger.h"
#include "code/player/player_core_v2.h"

#include <QApplication>
#include <QWidget>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QPushButton>
#include <QLabel>
#include <QSlider>
#include <QFileDialog>
#include <QMessageBox>
#include <QTimer>
#include <QProgressBar>
#include <QGroupBox>
#include <QSpinBox>
#include <QCheckBox>
#include <QComboBox>
#include <QTextEdit>
#include <QSplitter>
#include <QDebug>

using namespace av::player;
using namespace av::utils;

// 播放器事件回调类
class UIPlayerCallback : public PlayerEventCallback {
public:
    UIPlayerCallback(QWidget* parent) : m_parent(parent) {}
    
    void onStateChanged(PlayerState newState) override {
        std::string stateStr;
        switch (newState) {
            case PlayerState::Idle: stateStr = "Idle"; break;
            case PlayerState::Opening: stateStr = "Opening"; break;
            case PlayerState::Stopped: stateStr = "Stopped"; break;
            case PlayerState::Playing: stateStr = "Playing"; break;
            case PlayerState::Paused: stateStr = "Paused"; break;
            case PlayerState::Seeking: stateStr = "Seeking"; break;
            case PlayerState::Error: stateStr = "Error"; break;
        }
        Logger::instance().info("[EVENT] State changed to: " + stateStr);
        
        // 发送信号到UI线程
        QMetaObject::invokeMethod(m_parent, "onPlayerStateChanged", Qt::QueuedConnection,
                                Q_ARG(int, static_cast<int>(newState)));
    }
    
    void onPositionChanged(int64_t position) override {
        // 发送位置更新到UI线程
        QMetaObject::invokeMethod(m_parent, "onPlayerPositionChanged", Qt::QueuedConnection,
                                Q_ARG(qint64, position));
    }
    
    void onMediaInfoChanged(const MediaInfo& info) override {
        Logger::instance().info("[EVENT] Media info changed:");
        Logger::instance().info("  File: " + info.filename);
        Logger::instance().info("  Duration: " + std::to_string(info.duration / 1000000.0) + "s");
        Logger::instance().info("  Has Video: " + std::string(info.hasVideo ? "Yes" : "No"));
        Logger::instance().info("  Has Audio: " + std::string(info.hasAudio ? "Yes" : "No"));
        
        if (info.hasVideo) {
            Logger::instance().info("  Video: " + std::to_string(info.width) + "x" + std::to_string(info.height) + " @ " + std::to_string(info.fps) + " fps");
        }
        
        if (info.hasAudio) {
            Logger::instance().info("  Audio: " + std::to_string(info.sampleRate) + " Hz, " + std::to_string(info.channels) + " channels");
        }
        
        // 发送媒体信息到UI线程
        QMetaObject::invokeMethod(m_parent, "onMediaInfoChanged", Qt::QueuedConnection);
    }
    
    void onErrorOccurred(const std::string& error) override {
        Logger::instance().error("[ERROR] " + error);
        QMetaObject::invokeMethod(m_parent, "onPlayerError", Qt::QueuedConnection,
                                Q_ARG(QString, QString::fromStdString(error)));
    }
    
    void onFrameDropped(int64_t totalDropped) override {
        Logger::instance().warning("[WARNING] Frame dropped, total: " + std::to_string(totalDropped));
    }
    
    void onSyncError(double error, const std::string& reason) override {
        Logger::instance().warning("[WARNING] Sync error: " + std::to_string(error * 1000) + "ms, reason: " + reason);
    }

    void onEndOfFile() override {
        Logger::instance().info("[EVENT] End of file reached");
        QMetaObject::invokeMethod(m_parent, "onPlayerEndOfFile", Qt::QueuedConnection);
    }
    
private:
    QWidget* m_parent;
};

// 主播放器窗口类
class PlayerWindow : public QWidget {
    Q_OBJECT
    
public:
    PlayerWindow(QWidget* parent = nullptr) : QWidget(parent) {
        setupUI();
        setupPlayer();
        connectSignals();
        
        // 设置窗口属性
        setWindowTitle("AV Player Test with UI");
        resize(1200, 800);
        
        // 启动更新定时器
        m_updateTimer = new QTimer(this);
        connect(m_updateTimer, &QTimer::timeout, this, &PlayerWindow::updateUI);
        m_updateTimer->start(100); // 100ms更新一次

        m_player->openFile("C:/Users/zhuizhu/Videos/2.mp4");
        // playPause();
    }
    
    ~PlayerWindow() {
        if (m_player) {
            m_player->stop();
        }
    }
    
public slots:
    void onPlayerStateChanged(int state) {
        PlayerState playerState = static_cast<PlayerState>(state);
        
        switch (playerState) {
            case PlayerState::Idle:
                m_stateLabel->setText("状态: 空闲");
                m_playButton->setText("播放");
                m_playButton->setEnabled(false);
                break;
            case PlayerState::Opening:
                m_stateLabel->setText("状态: 打开中...");
                m_playButton->setEnabled(false);
                break;
            case PlayerState::Stopped:
                m_stateLabel->setText("状态: 已停止");
                m_playButton->setText("播放");
                m_playButton->setEnabled(true);
                break;
            case PlayerState::Playing:
                m_stateLabel->setText("状态: 播放中");
                m_playButton->setText("暂停");
                m_playButton->setEnabled(true);
                break;
            case PlayerState::Paused:
                m_stateLabel->setText("状态: 已暂停");
                m_playButton->setText("播放");
                m_playButton->setEnabled(true);
                break;
            case PlayerState::Seeking:
                m_stateLabel->setText("状态: 跳转中...");
                break;
            case PlayerState::Error:
                m_stateLabel->setText("状态: 错误");
                m_playButton->setEnabled(false);
                break;
        }
    }
    
    void onPlayerPositionChanged(qint64 position) {
        if (!m_seeking) {
            double seconds = position / 1000000.0;
            m_positionLabel->setText(QString("位置: %1s").arg(seconds, 0, 'f', 2));
            
            if (m_duration > 0) {
                int progress = static_cast<int>((position * 100) / m_duration);
                m_progressSlider->setValue(progress);
            }
        }
    }
    
    void onMediaInfoChanged() {
        if (m_player) {
            auto info = m_player->getMediaInfo();
            m_duration = info.duration;
            
            QString infoText = QString("文件: %1\n")
                              .arg(QString::fromStdString(info.filename));
            
            if (info.duration > 0) {
                double durationSec = info.duration / 1000000.0;
                infoText += QString("时长: %1s\n").arg(durationSec, 0, 'f', 2);
            }
            
            if (info.hasVideo) {
                infoText += QString("视频: %1x%2 @ %3fps\n")
                           .arg(info.width).arg(info.height).arg(info.fps, 0, 'f', 2);
                           
                // 初始化视频渲染器
                // if (m_videoRenderer && !m_videoRenderer->isInitialized()) {
                //     m_videoRenderer->initialize(info.width, info.height, AV_PIX_FMT_YUV420P, info.fps);
                // }
            }
            
            if (info.hasAudio) {
                infoText += QString("音频: %1Hz, %2ch\n")
                           .arg(info.sampleRate).arg(info.channels);
            }
            
            m_infoLabel->setText(infoText);
            m_playButton->setEnabled(true);
        }
    }
    
    void onPlayerError(const QString& error) {
        QMessageBox::critical(this, "播放器错误", error);
    }
    
    void onPlayerEndOfFile() {
        m_playButton->setText("播放");
    }
    
private slots:
    void openFile() {
        QString fileName = QFileDialog::getOpenFileName(this,
            "选择媒体文件", "",
            "媒体文件 (*.mp4 *.avi *.mkv *.mov *.wmv *.flv *.webm *.mp3 *.wav *.aac *.flac);;所有文件 (*.*)");
            
        if (!fileName.isEmpty()) {
            loadFile(fileName.toStdString());
        }
    }
    
    void playPause() {
        if (!m_player) return;
        
        auto state = m_player->getState();
        if (state == PlayerState::Playing) {
            m_player->pause();
        } else if (state == PlayerState::Paused || state == PlayerState::Stopped) {
            m_player->play();
        }
    }
    
    void stop() {
        if (m_player) {
            m_player->stop();
        }
    }
    
    void onProgressSliderPressed() {
        m_seeking = true;
    }
    
    void onProgressSliderReleased() {
        if (m_player && m_duration > 0) {
            int value = m_progressSlider->value();
            int64_t position = (m_duration * value) / 100;
            m_player->seek(position);
        }
        m_seeking = false;
    }
    
    void onVolumeChanged(int value) {
        if (m_player) {
            double volume = value / 100.0;
            m_player->setVolume(volume);
            m_volumeLabel->setText(QString("音量: %1%").arg(value));
        }
    }
    
    void updateUI() {
        if (m_player) {
            // 更新统计信息
            auto stats = m_player->getStats();
            QString statsText = QString("帧数: %1\n丢帧: %2\n重复帧: %3\n速度: %4x")
                               .arg(stats.totalFrames)
                               .arg(stats.droppedFrames)
                               .arg(stats.duplicatedFrames)
                               .arg(stats.playbackSpeed, 0, 'f', 2);
            m_statsLabel->setText(statsText);
        }
    }
    
private:
    void setupUI() {
        auto* mainLayout = new QHBoxLayout(this);
        
        // 左侧视频区域
        auto* leftWidget = new QWidget;
        auto* leftLayout = new QVBoxLayout(leftWidget);
        
        // 视频渲染器
        m_videoRenderer = new OpenGLVideoWidget;
        m_videoRenderer->setMinimumSize(640, 480);
        leftLayout->addWidget(m_videoRenderer, 1);
        
        // 控制按钮
        auto* controlLayout = new QHBoxLayout;
        m_openButton = new QPushButton("打开文件");
        m_playButton = new QPushButton("播放");
        m_stopButton = new QPushButton("停止");
        m_playButton->setEnabled(false);
        
        controlLayout->addWidget(m_openButton);
        controlLayout->addWidget(m_playButton);
        controlLayout->addWidget(m_stopButton);
        controlLayout->addStretch();
        
        leftLayout->addLayout(controlLayout);
        
        // 进度条
        m_progressSlider = new QSlider(Qt::Horizontal);
        m_progressSlider->setRange(0, 100);
        leftLayout->addWidget(m_progressSlider);
        
        // 音量控制
        auto* volumeLayout = new QHBoxLayout;
        volumeLayout->addWidget(new QLabel("音量:"));
        m_volumeSlider = new QSlider(Qt::Horizontal);
        m_volumeSlider->setRange(0, 100);
        m_volumeSlider->setValue(100);
        m_volumeSlider->setMaximumWidth(200);
        m_volumeLabel = new QLabel("音量: 100%");
        volumeLayout->addWidget(m_volumeSlider);
        volumeLayout->addWidget(m_volumeLabel);
        volumeLayout->addStretch();
        leftLayout->addLayout(volumeLayout);
        
        mainLayout->addWidget(leftWidget, 2);
        
        // 右侧信息面板
        auto* rightWidget = new QWidget;
        auto* rightLayout = new QVBoxLayout(rightWidget);
        rightWidget->setMaximumWidth(300);
        
        // 状态信息
        auto* statusGroup = new QGroupBox("状态信息");
        auto* statusLayout = new QVBoxLayout(statusGroup);
        m_stateLabel = new QLabel("状态: 空闲");
        m_positionLabel = new QLabel("位置: 0s");
        statusLayout->addWidget(m_stateLabel);
        statusLayout->addWidget(m_positionLabel);
        rightLayout->addWidget(statusGroup);
        
        // 媒体信息
        auto* infoGroup = new QGroupBox("媒体信息");
        auto* infoLayout = new QVBoxLayout(infoGroup);
        m_infoLabel = new QLabel("未加载文件");
        m_infoLabel->setWordWrap(true);
        infoLayout->addWidget(m_infoLabel);
        rightLayout->addWidget(infoGroup);
        
        // 统计信息
        auto* statsGroup = new QGroupBox("播放统计");
        auto* statsLayout = new QVBoxLayout(statsGroup);
        m_statsLabel = new QLabel("帧数: 0\n丢帧: 0\n重复帧: 0\n速度: 1.0x");
        statsLayout->addWidget(m_statsLabel);
        rightLayout->addWidget(statsGroup);
        
        rightLayout->addStretch();
        mainLayout->addWidget(rightWidget);
    }
    
    void setupPlayer() {
        // 创建同步配置
        SyncConfigV2 syncConfig;
        syncConfig.strategy = SyncStrategy::VIDEO_MASTER;
        syncConfig.audioSyncThreshold = 0.040;
        syncConfig.videoSyncThreshold = 0.020;
        syncConfig.maxSyncError = 0.200;
        syncConfig.clockUpdateInterval = 10;
        syncConfig.smoothingWindow = 10;
        syncConfig.enableAdaptiveSync = true;
        syncConfig.enableFrameDrop = true;
        syncConfig.enableFrameDuplicate = true;
        syncConfig.enablePrediction = true;
        syncConfig.enableErrorRecovery = true;
        
        // 创建播放器实例
        m_player = std::make_unique<PlayerCoreV2>(syncConfig);
        
        // 设置视频渲染器
        m_player->setOpenGLVideoRenderer(m_videoRenderer);
        
        // 创建事件回调
        m_callback = std::make_unique<UIPlayerCallback>(this);
        m_player->setEventCallback(m_callback.get());
        
        m_duration = 0;
        m_seeking = false;
    }
    
    void connectSignals() {
        connect(m_openButton, &QPushButton::clicked, this, &PlayerWindow::openFile);
        connect(m_playButton, &QPushButton::clicked, this, &PlayerWindow::playPause);
        connect(m_stopButton, &QPushButton::clicked, this, &PlayerWindow::stop);
        
        connect(m_progressSlider, &QSlider::sliderPressed, this, &PlayerWindow::onProgressSliderPressed);
        connect(m_progressSlider, &QSlider::sliderReleased, this, &PlayerWindow::onProgressSliderReleased);
        
        connect(m_volumeSlider, &QSlider::valueChanged, this, &PlayerWindow::onVolumeChanged);
    }
    
    void loadFile(const std::string& filename) {
        if (!m_player) return;
        
        Logger::instance().info("Loading file: " + filename);
        
        auto result = m_player->openFile(filename);
        if (result != ErrorCode::SUCCESS) {
            QString error = QString("无法打开文件: %1\n错误代码: %2")
                           .arg(QString::fromStdString(filename))
                           .arg(static_cast<int>(result));
            QMessageBox::critical(this, "文件打开失败", error);
            Logger::instance().error("Failed to open file: " + std::to_string(static_cast<int>(result)));
        }
    }
    
private:
    // UI组件
    OpenGLVideoWidget* m_videoRenderer;
    QPushButton* m_openButton;
    QPushButton* m_playButton;
    QPushButton* m_stopButton;
    QSlider* m_progressSlider;
    QSlider* m_volumeSlider;
    QLabel* m_stateLabel;
    QLabel* m_positionLabel;
    QLabel* m_infoLabel;
    QLabel* m_statsLabel;
    QLabel* m_volumeLabel;
    QTimer* m_updateTimer;
    
    // 播放器相关
    std::unique_ptr<PlayerCoreV2> m_player;
    std::unique_ptr<UIPlayerCallback> m_callback;
    int64_t m_duration;
    bool m_seeking;
};

int main(int argc, char* argv[]) {
    QApplication app(argc, argv);
    
    // 初始化日志系统
    Logger::instance().initialize("test.log", LogLevel::DEBUG, false, false);
    Logger::instance().info("PlayerCoreV2 Example Started");
    
    try {
        // 创建播放器窗口
        PlayerWindow window;
        window.show();
        
        // 如果有命令行参数，自动加载文件
        // if (argc > 1) {
        //     QTimer::singleShot(500, [&window, argv]() {
        //         QMetaObject::invokeMethod(&window, "loadFile", Qt::QueuedConnection,
        //                                 Q_ARG(std::string, std::string(argv[1])));
        //     });
        // } else {
        //     // 默认加载测试文件
        //     QTimer::singleShot(500, [&window]() {
        //         std::string testFile = "C:/Users/zhuizhu/Videos/2.mp4";
        //         QMetaObject::invokeMethod(&window, "loadFile", Qt::QueuedConnection,
        //                                 Q_ARG(std::string, testFile));
        //     });
        // }

        return app.exec();
        
    } catch (const std::exception& e) {
        Logger::instance().error("Exception: " + std::string(e.what()));
        QMessageBox::critical(nullptr, "错误", QString("发生异常: %1").arg(e.what()));
        return 1;
    } catch (...) {
        Logger::instance().error("Unknown exception occurred");
        QMessageBox::critical(nullptr, "错误", "发生未知异常");
        return 1;
    }
}

#include "test_player_with_ui.moc"