#pragma once

#include <QElapsedTimer>
#include <QMutex>
#include <QObject>
#include <QThread>

#include <memory>
#include <thread>
#include <atomic>
#include <condition_variable>
#include <functional>

#include "AVPlayer2/audio_play_thread.h"

class ReadThread;
class VideoDecodeThread;
class AudioDecodeThread;
class SubtitleDecodeThread;
class AudioPlayThread;
class VideoPlayThread;
class VideoStateData;
class StartPlayThread;
class StopWaitingThread;

struct VideoState;

class OpenGLVideoWidget;

class PlayerController : public QObject
{
    Q_OBJECT

public:
    enum class PlayerState {
        Idle,
        Initializing,
        Playing,
        Stopping
    };

    explicit PlayerController(QWidget* parent = nullptr);
    ~PlayerController();

    // 播放控制接口
    void startToPlay(const QString& file);
    void stopPlay();
    void pausePlay();
    void playMute(bool mute);
    void playStartSeek();
    void playSeekPre();
    void playSeekNext();
    void setVolume(int volume, int maxValue = 100);
    void setPlaySpeed(double speed);
    bool isPlaying() const;
    QString playingFile() const;
    bool playingHasVideo();
    bool playingHasAudio();
    bool playingHasSubtitle();

    // 状态访问接口
    VideoState* state();
    float deviceVolume() const;
    void setDeviceVolume(float volume);

    // 线程访问接口
    AudioPlayThread* audioPlayThread() const { return m_audioPlayThread.get(); }
    VideoPlayThread* videoPlayThread() const { return m_videoPlayThread.get(); }
    VideoStateData* videoStateData() const { return m_videoState.get(); }

public slots:
    // 线程生命周期管理
    void readPacketStopped();
    void decodeVideoStopped();
    void decodeAudioStopped();
    void decodeSubtitleStopped();
    void audioPlayStopped();
    void videoPlayStopped();

    // 播放状态回调
    void playStarted(bool success = true);
    void playFailed(const QString& file);

    // 线程管理
    void setThreads();
    void startSendData(bool send = true);
    void videoSeek(double pos = 0, double incr = 0);

signals:
    // 线程控制信号
    void startToPlaySignal();
    void stopAudioPlayThread();
    void stopVideoPlayThread();
    void stopDecodeThread();
    void stopReadPacketThread();
    void waitStopAudioPlayThread();
    void waitStopVideoPlayThread();

    void audioStopped(); // 音频结束
    void videoStopped(); // 视频结束
    void playbackFinished(); // 新增：播放自然结束

    // 多媒体数据处理
    void frameReady(AVFrame*);
    void audioData(const AudioData& data);
    void subtitleReady(const QString& text);

    // UI更新信号
    void setPlayControlWnd(bool set);
    void updatePlayControlVolume();
    void updatePlayControlStatus();
    void updatePlayTime();
    void playSeek();
    void showMessage(const QString& message, const QString& windowTitle, const QString& styleSheet);
    void requestFullscreen(bool fullscreen);
    void requestHideStatusBar(bool hide);

    void asyncInitFinished(const QString& file, bool success);

private slots:
    void onAsyncInitFinished(const QString& file, bool success);

private:
    // 核心播放逻辑
    bool startPlay();
    void waitStopPlay(const QString& file);
    void allThreadStart();

    // 线程创建方法
    bool createVideoState(const QString& file);
    void deleteVideoState();
    bool createReadThread();
    bool createDecodeVideoThread();
    bool createDecodeAudioThread();
    bool createDecodeSubtitleThread();
    bool createVideoPlayThread();
    bool createAudioPlayThread();
    bool startPlayThread(); // 避免UI冻结的线程

    // 播放辅助方法
    void videoSeekInc(double incr);
    void printDecodeContext(const AVCodecContext* videoCtx, bool isVideo = true) const;
    void displayStatusMessage(const QString& message);
    QSize displayVideoSize(AVCodecContext* videoCtx) const;
    void setVolumeUpdown(bool increase = true, float unit = 0.05f);
    QString strippedName(const QString& fullPath) const;
    void hideCursor(bool hide = true);
    bool cursorInWindow(QWidget* widget);

    // 异步初始化相关
    void asyncInit(const QString& file);
    std::thread m_initThread;
    std::atomic<bool> m_initInProgress{false};
    std::atomic<bool> m_initSuccess{false};
    std::mutex m_stopMutex;

    // 状态机
    std::atomic<PlayerState> m_state{PlayerState::Idle};

private:
    // 多媒体线程
    std::unique_ptr<ReadThread> m_packetReadThread;
    std::unique_ptr<VideoDecodeThread> m_decodeVideoThread;
    std::unique_ptr<AudioDecodeThread> m_decodeAudioThread;
    std::unique_ptr<SubtitleDecodeThread> m_decodeSubtitleThread;
    std::unique_ptr<AudioPlayThread> m_audioPlayThread;
    std::unique_ptr<VideoPlayThread> m_videoPlayThread;

    // 状态管理
    std::unique_ptr<VideoStateData> m_videoState;
    std::unique_ptr<StartPlayThread> m_beforePlayThread;
    std::unique_ptr<StopWaitingThread> m_stopPlayWaitingThread;

    QString m_currentFile; // 更清晰的命名
    void checkAndResetState();
};