/* 
 * Copyright 2012 Tallinn University Centre for Educational Technology
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ee.htk.dippler.app;

import java.util.ArrayList;
import java.util.List;

import android.app.ListActivity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import ee.htk.dippler.app.ArrayAdapters.AssignmentArrayAdapter;
import ee.htk.dippler.app.entities.Assignment;
import ee.htk.dippler.app.entities.Course;
import ee.htk.dippler.app.service.ListingManager;
import ee.htk.dippler.app.service.SessionObject;

public class TasksActivity extends ListActivity {
	
	private ListingManager listingManager;
	private List<Assignment> tasks = new ArrayList<Assignment>();
	private AssignmentArrayAdapter mAdapter;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		Intent a = getIntent();
        Bundle extras = a.getExtras();
        
        Course course = extras.getParcelable("dippler-course");
        SessionObject session = extras.getParcelable("dippler-session");
        
		listingManager = new ListingManager(this, session.getId());
		setContentView(R.layout.course_listing);
		
		mAdapter = new AssignmentArrayAdapter(getApplicationContext(), R.layout.list_news, tasks);
		setListAdapter(mAdapter);
		
		getListView().setOnItemClickListener(new OnItemClickListener() {
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
				Intent post_intent = new Intent(getApplicationContext(), TaskDetailsActivity.class);
				post_intent.putExtra("dippler-task", tasks.get(position));
				startActivity(post_intent);
			}
		});
		
		new fetchAssignments().execute(course.getId());
	}
	
	private class fetchAssignments extends AsyncTask<Integer, Integer, List<Assignment>> {
		
		@Override
		protected List<Assignment> doInBackground(Integer... params) {
			return listingManager.getAssignments(params[0]);
		}

		@Override
		protected void onPostExecute(List<Assignment> tasks_in) {
			super.onPostExecute(tasks_in);
			tasks.addAll(tasks_in);
			mAdapter.notifyDataSetChanged();
			findViewById(R.id.progress_wrapper).setVisibility(View.GONE);
		}
		
	}
}