/**  ~~~~~
 * Created with the AppyBuilder Code Editor.     https://editor.appybuilder.com/
 
 * **** NOTE: DO NOT use a package name. 
 * **** The package name will be created for you automatically.
 * **** Adding a package name will cause a compile error
 */
 

import android.content.Context;
import android.util.Log;
import com.google.appinventor.components.annotations.*;
import com.google.appinventor.components.runtime.*;
import com.google.appinventor.components.common.ComponentCategory;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.MediaMetadataRetriever;

import com.google.appinventor.components.common.PropertyTypeConstants;
import com.google.appinventor.components.runtime.util.MediaUtil;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

@DesignerComponent(version = 2,  description = "obtention des tags d'un mp3" + "  par jm latour ",
        category = ComponentCategory.EXTENSION,
        nonVisible = true,   iconName = "https://www.dropbox.com/s/7jim1f21jjxtv4v/logo%20Part-cours.png?dl=0")

@SimpleObject(external = true)
public class Mp3tags extends AndroidNonvisibleComponent {
    private ComponentContainer container;
    public static String fichier="";
    /**
     * @param container container, component will be placed in
     */
    public Mp3tags(ComponentContainer container) {
        super(container.$form());
        this.container = container;
    }
    MediaMetadataRetriever metaRetriever;

    @SimpleFunction(description = "return file's artist")
    public String Artist(String song){
		song=defineDir(song);
        File file=new File(song);

        metaRetriever = new MediaMetadataRetriever();
        if (file.exists()) {
            metaRetriever.setDataSource(song);
            try {
                song=metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_ARTIST);
                if (song == ""|| song == null) { song = ""; }

            } catch (Exception e) {
                song=" Exception";
            }
        }else {
            song="file not found";
        }
        return song;
    }

    @SimpleFunction(description = "return file's album")
    public String Album(String song){
		song=defineDir(song);
        File file=new File(song);

        metaRetriever = new MediaMetadataRetriever();
        if (file.exists()) {
            metaRetriever.setDataSource(song);
            try {
                song=metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_ALBUM);
                if (song == ""|| song == null) { song = ""; }

            } catch (Exception e) {
                song=" Exception";
            }
        }else {
            song="file not found";
        }
        return song;
    }

    @SimpleFunction(description = "return file's title")
    public String Title(String song){
		 song=defineDir(song);
        File file=new File(song);

        metaRetriever = new MediaMetadataRetriever();
        if (file.exists()) {
            metaRetriever.setDataSource(song);
            try {
                song=metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_TITLE);
                if (song == ""|| song == null) { song = ""; }

            } catch (Exception e) {
                song=" Exception";
            }
        }else {
            song="file not found";
        }
        return song;
    }

    @SimpleFunction(description = "return file's genre")
    public String Genre(String song){
		song=defineDir(song);
        File file=new File(song);

        metaRetriever = new MediaMetadataRetriever();
        if (file.exists()) {
            metaRetriever.setDataSource(song);
            try {
                song=metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_GENRE);
                if (song == ""|| song == null) { song = ""; }

            } catch (Exception e) {
                song=" Exception";
            }
        }else {
            song="file not found";
        }
        return song;
    }



	@SimpleFunction(description = "return file's path")
    public String Path(String song){
        String path=defineDir(song);
        //path=form.getExternalFilesDir("Mp3Tags").getAbsolutePath()+"/tmp.png";
        return path;
    }
		
   String defineDir(String path){
        
        if(path.startsWith("//")){
            return "/storage/emulated/0/AppInventor/assets/"+path.substring(2,path.length());
        }else{
                if(path.startsWith("/")){
                    return "/mnt/sdcard"+path;
                }else {
                    if (path.startsWith("file:///") ) {
                        return path.substring(7,path.length());
                    }
                    else return path;
                }
    }
    }
	
	    @SimpleFunction(description = "return file's album art")
        public String Album_Art(String song){
			song=defineDir (song);
            File file=new File(song);
            byte[] art = new byte[0];
			Bitmap songImage=null;
            metaRetriever = new MediaMetadataRetriever();
            if (file.exists()) {
                metaRetriever.setDataSource(song);
                try {song="try";
                    art = metaRetriever.getEmbeddedPicture();
                    songImage = BitmapFactory
                            .decodeByteArray(art, 0, art.length);
                } catch (Exception e) {song="exception";
                }
            }else {
                //song="file not found : "+ file.toString();
            }
			String filename =form.getExternalFilesDir("Mp3Tags").getAbsolutePath()+"/tmp.png";			
			String reponse=saveBitmap(songImage,filename);	
        return reponse;
		}
		
      private String saveBitmap(Bitmap bitmap, String path) {
        File file = null;
		String reponse="vide";
        if (bitmap != null) {
            file = new File(path);
			
            try {
                FileOutputStream outputStream = null;
                try {
                    outputStream = new FileOutputStream(path); //here is set your file path where you want to save or also here you can set file object directly

                    bitmap.compress(Bitmap.CompressFormat.PNG, 100, outputStream); // bitmap is your Bitmap instance, if you want to compress it you can compress reduce percentage
                    // PNG is a lossless format, the compression factor (100) is ignored
					reponse=file.toString();
                } catch (Exception e) {
                    e.printStackTrace();
					reponse="erreur";
                } finally {
                    try {
                        if (outputStream != null) {
                            outputStream.close();
                        }
                    } catch (IOException e) {
                        //e.printStackTrace();
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
				reponse="erreur 2";
            }
        }else{reponse="null";}
        return reponse;
    }
	

}