package com.live.flowlivewallpaper.service;

import android.content.Context;
import android.content.SharedPreferences;
import android.net.Uri;
import android.service.wallpaper.WallpaperService;
import android.util.Log;
import android.view.SurfaceHolder;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.ExoPlayer;
import com.google.android.exoplayer2.MediaItem;
import com.google.android.exoplayer2.source.ProgressiveMediaSource;
import com.google.android.exoplayer2.upstream.DefaultDataSource;
import java.io.File;

public class LiveService extends WallpaperService {

    @Override
    public Engine onCreateEngine() {
        return new VideoEngine();
    }

    private class VideoEngine extends Engine {
        private ExoPlayer exoPlayer;

        @Override
        public void onCreate(SurfaceHolder surfaceHolder) {
            super.onCreate(surfaceHolder);
            initExoPlayer();
        }

        private void initExoPlayer() {
            exoPlayer = new ExoPlayer.Builder(LiveService.this).build();
            exoPlayer.setRepeatMode(ExoPlayer.REPEAT_MODE_ONE);
            update();
        }

        @Override
        public void onSurfaceCreated(SurfaceHolder holder) {
            super.onSurfaceCreated(holder);
            if (holder != null && exoPlayer != null) {
                exoPlayer.setVideoSurface(holder.getSurface());
                exoPlayer.setVideoScalingMode(C.VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING);
            }
        }

        @Override
        public void onVisibilityChanged(boolean visible) {
            super.onVisibilityChanged(visible);
            if (exoPlayer != null) {
                if (visible) {
                    update();
                    exoPlayer.play();
                } else {
                    exoPlayer.pause();
                }
            }
        }

        @Override
        public void onSurfaceDestroyed(SurfaceHolder holder) {
            super.onSurfaceDestroyed(holder);
            if (exoPlayer != null) {
                exoPlayer.release();
                exoPlayer = null;
            }
        }

        @Override
        public void onDestroy() {
            super.onDestroy();
            if (exoPlayer != null) {
                exoPlayer.release();
                exoPlayer = null;
            }
        }

        private void update() {
            Uri uri = getVideoUrl(LiveService.this);
            if (uri != null && exoPlayer != null) {
                MediaItem mediaItem = MediaItem.fromUri(uri);
                ProgressiveMediaSource mediaSource = new ProgressiveMediaSource.Factory(
                        new DefaultDataSource.Factory(LiveService.this))
                        .createMediaSource(mediaItem);
                exoPlayer.setMediaSource(mediaSource);
                exoPlayer.prepare();
                exoPlayer.setPlayWhenReady(true);
            }
        }

        private Uri getVideoUrl(Context context) {
            SharedPreferences prefs = context.getSharedPreferences("WallpaperPrefs", MODE_PRIVATE);
            String path = prefs.getString("video_path", "");
            File file = new File(path);
            return (file.isFile() && file.exists()) ? Uri.fromFile(file) : null;
        }
    }
}