/*

 * Hedgewars for Android. An Android port of Hedgewars, a free turn based strategy game

 * Copyright (c) 2011 Richard Deurwaarder <xeli@xelification.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; version 2 of the License

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

 */

package org.hedgewars.hedgeroid.Downloader;

import org.hedgewars.hedgeroid.R;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.content.ServiceConnection;

import android.os.Bundle;

import android.os.Handler;

import android.os.IBinder;

import android.os.Message;

import android.os.Messenger;

import android.os.RemoteException;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.ProgressBar;

import android.widget.TextView;

public class DownloadFragment extends Fragment{

	public static final String EXTRA_TASK = "task";

	public static final int MSG_START = 0;

	public static final int MSG_UPDATE = 1;

	public static final int MSG_DONE = 2;

	public static final int MSG_FAILED = 3;

	private boolean boundToService = false;

	private TextView progress_sub;

	private ProgressBar progress;

	private Button positive, negative;

	private DownloadPackage pack;

	private Handler messageHandler;

	private Messenger messenger, messengerService;

	public static DownloadFragment getInstance(DownloadPackage task){

		DownloadFragment df = new DownloadFragment();

		Bundle args = new Bundle();

		args.putParcelable(DownloadFragment.EXTRA_TASK, task);

		df.setArguments(args);

		return df;

	}

	public void onActivityCreated(Bundle savedInstanceState){

		super.onActivityCreated(savedInstanceState);

		messageHandler = new Handler(messageCallback);

		messenger = new Messenger(messageHandler);

		 Intent i = new Intent(getActivity(), DownloadService.class);

         getActivity().startService(i);

         getActivity().bindService(new Intent(getActivity(), DownloadService.class), connection, Context.BIND_AUTO_CREATE);

	}

	public View onCreateView(LayoutInflater inflater, ViewGroup viewgroup, Bundle savedInstanceState){

		View v = inflater.inflate(R.layout.download_progress, viewgroup, false);

		progress_sub = (TextView)v.findViewById(R.id.progressbar_sub);

		progress = (ProgressBar)v.findViewById(R.id.progressbar);

		positive = (Button) v.findViewById(R.id.background);

		negative = (Button) v.findViewById(R.id.cancelDownload);

		positive.setOnClickListener(backgroundClicker);

		negative.setOnClickListener(cancelClicker);

		pack = getArguments().getParcelable(DownloadFragment.EXTRA_TASK);

		return v;

	}

	private OnClickListener backgroundClicker = new OnClickListener(){

		public void onClick(View v){

			getActivity().finish();

		}

	};

	private OnClickListener cancelClicker = new OnClickListener(){

		public void onClick(View v){

			if(messenger != null){

				Message message = Message.obtain(messageHandler, DownloadService.MSG_CANCEL, pack);

				try {

					messengerService.send(message);

				} catch (RemoteException e) {}

			}

			getActivity().finish();

		}

	};

	private OnClickListener doneClicker = new OnClickListener(){

		public void onClick(View v){

			getActivity().finish();

		}

	};

	private OnClickListener tryAgainClicker = new OnClickListener(){

		public void onClick(View v){

			if(messenger != null){

				Message message = Message.obtain(messageHandler, DownloadService.MSG_ADDTASK, pack);

				message.replyTo = messenger;

				try {

					messengerService.send(message);

				} catch (RemoteException e) {

					e.printStackTrace();

				}

			}

		}

	};

	public void onStop(){

		super.onStop();

		unBindFromService();

	}

	private ServiceConnection connection = new ServiceConnection(){

		public void onServiceConnected(ComponentName name, IBinder service) {

			messengerService = new Messenger(service);

			try{

				//give the service a task

				if(messenger != null){

					Message message = Message.obtain(messageHandler, DownloadService.MSG_ADDTASK, pack);

					message.replyTo = messenger;

					messengerService.send(message);

				}

			}catch (RemoteException e){}

		}

		public void onServiceDisconnected(ComponentName name) {

			messengerService = null;

		}

	};

	private void unBindFromService(){

		if(boundToService){

			if(messenger != null){

				try {

					Message message = Message.obtain(messageHandler, DownloadService.MSG_UNREGISTER_CLIENT, pack);

					message.replyTo = messenger;

					messengerService.send(message);

				} catch (RemoteException e) {

					e.printStackTrace();

				}

			}

			boundToService = false;

			getActivity().unbindService(connection);

		}	

	}

	private Handler.Callback messageCallback = new Handler.Callback() {

		public boolean handleMessage(Message msg) {

			switch(msg.what){

			case MSG_START:

				progress.setMax(msg.arg1);

				progress_sub.setText(String.format("%dkb/%dkb\n%s", 0, msg.arg1, ""));

				positive.setText(R.string.download_background);

				positive.setOnClickListener(backgroundClicker);

				negative.setText(R.string.download_cancel);

				negative.setOnClickListener(cancelClicker);

				break;

			case MSG_UPDATE:

				progress_sub.setText(String.format("%d%% - %dkb/%dkb\n%s",(msg.arg1*100)/msg.arg2, msg.arg1, msg.arg2, msg.obj));

				progress.setProgress(msg.arg1);

				break;

			case MSG_DONE:

				progress.setProgress(progress.getMax());

				progress_sub.setText(R.string.download_done);

				positive.setText(R.string.download_back);

				positive.setOnClickListener(doneClicker);

				negative.setVisibility(View.INVISIBLE);

				break;

			case MSG_FAILED:

				progress.setProgress(progress.getMax());

				progress_sub.setText(R.string.download_failed);

				positive.setText(R.string.download_back);

				positive.setOnClickListener(doneClicker);

				negative.setText(R.string.download_tryagain);

				negative.setOnClickListener(tryAgainClicker);

				break;

			}

			return false;

		}

	};

}