//
// Created by JIBUM HAN on 2026. 4. 9..
//
#include <jni.h>
#include <android/native_window_jni.h>
#include "PlayerEngine.h"

// 기존 월페이퍼 코드 어딘가에 있는 전역 JavaVM 포인터를 가져다 씁니다.
extern JavaVM* g_vm;

// C++ 객체를 포인터로 변환하는 헬퍼 함수
template<typename T>
T* toPlayerNative(jlong handle) {
    return reinterpret_cast<T*>(handle);
}

extern "C" {

JNIEXPORT jlong JNICALL
Java_bums_lunatic_launcher_player_NativePlayer_nativeInit(JNIEnv *env, jobject thiz) {
    // 엔진 생성 시 JavaVM과 Kotlin 콜백 객체(thiz)를 전달합니다.
    PlayerEngine* engine = new PlayerEngine(g_vm, thiz);
    return reinterpret_cast<jlong>(engine);
}

JNIEXPORT void JNICALL
Java_bums_lunatic_launcher_player_NativePlayer_nativeSeekBy(JNIEnv *env, jobject thiz, jlong handle, jdouble seconds) {
    PlayerEngine* engine = toPlayerNative<PlayerEngine>(handle);
    if (engine) engine->seekBy(seconds);
}

JNIEXPORT void JNICALL
Java_bums_lunatic_launcher_player_NativePlayer_nativeSetSpeed(JNIEnv *env, jobject thiz, jlong handle, jfloat speed) {
    PlayerEngine* engine = toPlayerNative<PlayerEngine>(handle);
    if (engine) engine->setSpeed(speed);
}


JNIEXPORT void JNICALL
Java_bums_lunatic_launcher_player_NativePlayer_nativeSetDataSource(JNIEnv *env, jobject thiz, jlong handle, jint videoFd, jstring jSubPath) {
    PlayerEngine* engine = toPlayerNative<PlayerEngine>(handle);
    if (engine) {
        const char* subPath = env->GetStringUTFChars(jSubPath, nullptr);

        // 엔진으로 FD 번호를 전달
        engine->setDataSource(videoFd, subPath);

        env->ReleaseStringUTFChars(jSubPath, subPath);
    }
}

JNIEXPORT void JNICALL
Java_bums_lunatic_launcher_player_NativePlayer_nativePause(JNIEnv *env, jobject thiz, jlong handle) {
    PlayerEngine* engine = toPlayerNative<PlayerEngine>(handle);
    if (engine) {
        engine->pause(); // 💡 세미콜론 추가
    }
}


JNIEXPORT void JNICALL
Java_bums_lunatic_launcher_player_NativePlayer_nativePlay(JNIEnv *env, jobject thiz, jlong handle, jobject surface) {
    PlayerEngine* engine = toPlayerNative<PlayerEngine>(handle);
    if (engine && surface) {
        ANativeWindow* window = ANativeWindow_fromSurface(env, surface);
        // RGBA 포맷으로 버퍼 설정
        ANativeWindow_setBuffersGeometry(window, 0, 0, WINDOW_FORMAT_RGBX_8888);
        engine->play(window);
        ANativeWindow_release(window);
    }
}

JNIEXPORT void JNICALL
Java_bums_lunatic_launcher_player_NativePlayer_nativeStop(JNIEnv *env, jobject thiz, jlong handle) {
    PlayerEngine* engine = toPlayerNative<PlayerEngine>(handle);
    if (engine) engine->stop();
}

JNIEXPORT void JNICALL
Java_bums_lunatic_launcher_player_NativePlayer_nativeDestroy(JNIEnv *env, jobject thiz, jlong handle) {
    PlayerEngine* engine = toPlayerNative<PlayerEngine>(handle);
    if (engine) delete engine;
}

}