#pragma once

#include <QObject>
#include <QHash>
#include <QString>
#include <QByteArray>
#include <vector>
#include <memory>
#include <cstdint>
#include <QTimer>
#include "audio_device.h"

struct ma_engine;
struct ma_context;
struct ma_decoder;
struct ma_sound;

class SoundManager : public QObject {
    Q_OBJECT
public:
    struct EventSettings {
        bool enabled = true;
        float volume = 0.8f;
    };

    static SoundManager* instance();

    bool init();
    void shutdown();

    void setEnabled(bool enabled);
    bool isEnabled() const;
    void setVolume(float volume);
    float volume() const;

    void setEvent(const QString& name, bool enabled, float volume);
    EventSettings eventSettings(const QString& name) const;

    bool loadSound(const QString& name, const QString& filePath);
    void play(const QString& name);
    void playLoop(const QString& name);
    void stopLoop();

    ma_context* context();
    static bool deviceId(const QString& key, ma_device_id* id);
    void setDevices(const QString& output, const QString& input);
    QString playbackDevice() const { return m_playbackId; }
    QString captureDevice() const { return m_captureId; }

    /* owner удерживает готовый PCM без копии в GUI; без owner короткие буферы копируются. */
    void playRawPcm(const int16_t* pcm, int sampleCount, int sampleRate, int channels,
                    std::shared_ptr<std::vector<int16_t>> owner = {});
    void pauseCurrentPcm();
    void resumeCurrentPcm();
    void stopCurrentPcm();
    void seekCurrentPcm(unsigned long long pcmFrame);
    unsigned long long currentPcmCursor() const;
    bool isCurrentPcmPlaying() const;
    int currentPcmSampleRate() const { return m_currentPcmSampleRate; }

    struct DeviceInfo {
        QString name;
        bool isDefault = false;
        QString id;
    };
    static QVector<DeviceInfo> enumeratePlaybackDevices();
    static QVector<DeviceInfo> enumerateCaptureDevices();

signals:
    void contextAboutToReset(); // Все зависимые устройства закрываются синхронно перед uninit контекста.
    void contextRestored();
    void devicesChanged();

private:
    SoundManager();
    ~SoundManager();

    void clearCurrentPcm();
    void recoverAudio();
    bool openContext();
    void openOutput();

    struct LoadedSound {
        QByteArray mp3Data;
        ma_decoder* decoder = nullptr;
        ma_sound* sound = nullptr;
    };

    ma_engine* m_engine = nullptr;
    ma_context* m_context = nullptr;
    AudioDevice m_output;
    QTimer m_recoveryTimer;
    QElapsedTimer m_clock;
    qint64 m_contextRetryAt = 0;
    int m_contextRetryDelay = 250;
    QString m_playbackId, m_captureId;
    ma_backend m_backend = ma_backend_null;
    bool m_backendSelected = false;
    ma_sound* m_currentPcmSound = nullptr;
    void* m_currentPcmBuffer = nullptr;
    int m_currentPcmSampleRate = 0;
    std::shared_ptr<std::vector<int16_t>> m_currentPcmOwner;
    bool m_initialized = false;
    bool m_enabled = true;
    float m_volume = 0.8f;
    QHash<QString, EventSettings> m_eventSettings;
    QHash<QString, LoadedSound> m_sounds;
    QString m_loopName;
};