package com.annimon.simplypaint;

import android.app.ListActivity;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.widget.ListAdapter;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.Random;

/**
 *
 * @author aNNiMON
 */
public class GetPlaylist extends ListActivity {

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);

        String[] projection = {
            MediaStore.Audio.Media._ID,
            MediaStore.Audio.Media.DATA,
            MediaStore.Audio.Media.TITLE
        };
        String selection = MediaStore.Audio.Media.IS_MUSIC + " != 0 ";
        ArrayList<String> paths = new ArrayList<String>();
        
        Cursor musicListInternalMemoryCursor = query(this,
                MediaStore.Audio.Media.INTERNAL_CONTENT_URI,
                projection, selection, null, null, 0);
        if (musicListInternalMemoryCursor != null) {
            for (int i = 0; i < musicListInternalMemoryCursor.getCount(); i++) {
                musicListInternalMemoryCursor.moveToPosition(i);
                String p = musicListInternalMemoryCursor.getString(1);
                if (p.endsWith("mp3")) paths.add(p);
            }
            musicListInternalMemoryCursor.close();
        }
        
        Cursor musicListSDCardCursor = query(this,
                MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
                projection, selection, null, null, 0);
        
        if (musicListSDCardCursor != null) {
            for (int i = 0; i < musicListSDCardCursor.getCount(); i++) {
                musicListSDCardCursor.moveToPosition(i);
                String p = musicListSDCardCursor.getString(1);
                if (p.endsWith("mp3")) paths.add(p);
            }
            //musicListSDCardCursor.close();
        }
        
        ListAdapter adapter = new SimpleCursorAdapter(this, // Context.
            android.R.layout.two_line_list_item,
            musicListSDCardCursor, // Pass in the cursor to bind to.
            // Array of cursor columns to bind to.
            new String[] { MediaStore.Audio.Media.TITLE,  MediaStore.Audio.Media.DATA },
            // Parallel array of which template objects to bind to those
            // columns.
            new int[] { android.R.id.text1, android.R.id.text2 }, 0);

        // Bind to our new adapter.
        setListAdapter(adapter);

        if (paths.isEmpty()) {
            Toast.makeText(this, "no media found", Toast.LENGTH_LONG).show();
            return;
        }

        Random r = new Random();
        int pos = r.nextInt(paths.size() - 1);
        if (paths.size() == 1) pos = 0;

        String url = paths.get(pos);
        if (url.length() == 0) return;

        Toast.makeText(this, url, Toast.LENGTH_LONG).show();

        try {
            Intent it = new Intent(Intent.ACTION_VIEW);
            Uri uri = Uri.parse("file://" + url);
            it.setDataAndType(uri, "audio/mpeg");
            startActivity(it);
        } catch (Exception e) {
            Toast.makeText(this, e.toString(), Toast.LENGTH_LONG).show();
        }
    }

    private static Cursor query(Context context, Uri uri, String[] projection,
                                String selection, String[] selectionArgs,
                                String sortOrder, int limit) {
        try {
            ContentResolver resolver = context.getContentResolver();
            if (resolver == null) {
                return null;
            }
            if (limit > 0) {
                uri = uri.buildUpon().appendQueryParameter("limit", "" + limit).build();
            }
            return resolver.query(uri, projection, selection, selectionArgs, sortOrder);
        } catch (UnsupportedOperationException ex) {
            return null;
        }
    }
}