package com.android.jsondownload;

import android.app.DownloadManager;
import android.app.NotificationManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Environment;
import android.support.v4.app.NotificationCompat;
import android.widget.Button;

import java.util.ArrayList;

public class Downloader {

    private DownloadManager downloader;

    ArrayList<Long> list = new ArrayList<>();
    private long refid;
    private Button mbtnStartDownload;

    private Context mContext;

    public Downloader(Context context) {
        this.mContext = context;
    }

    public void startDownload(String url, int i){

        downloader = (DownloadManager) mContext.getSystemService(Context.DOWNLOAD_SERVICE);
        mContext.registerReceiver(onComplete, new IntentFilter(android.app.DownloadManager.ACTION_DOWNLOAD_COMPLETE));

        android.app.DownloadManager.Request request = new android.app.DownloadManager.Request(Uri.parse(url));
        request.setAllowedNetworkTypes(android.app.DownloadManager.Request.NETWORK_WIFI | android.app.DownloadManager.Request.NETWORK_MOBILE);
        request.setAllowedOverRoaming(false);
        request.setTitle("Downloading " + "Halfdata_" + i + ".zip");
        request.setDescription("Halfdata_" + i + ".zip");
        request.setVisibleInDownloadsUi(true);
        request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "/halfdatas/" + "/" + "halfdata_" + i + ".zip");

        refid = downloader.enqueue(request);
        list.add(refid);

    }

    private BroadcastReceiver onComplete = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {

            long referenceId = intent.getLongExtra(android.app.DownloadManager.EXTRA_DOWNLOAD_ID, -1);

            list.remove(referenceId);

            if (list.isEmpty()) {

                NotificationCompat.Builder mBuilder =
                        new NotificationCompat.Builder(mContext)
                                .setSmallIcon(R.mipmap.ic_launcher)
                                .setContentTitle("Halfdata")
                                .setContentText("Download completed");

                NotificationManager notificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
                notificationManager.notify(455, mBuilder.build());
            }
        }
    };


}