/*
 * Southampton University Map App
 * Copyright (C) 2011  Christopher Baines
 * 
 * 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; either version 2
 * of the License, or (at your option) any later version.
 * 
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package net.cbaines.suma;

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.sql.SQLException;

import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Display;
import android.view.View;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageButton;
import android.widget.ImageView.ScaleType;
import android.widget.ProgressBar;
import android.widget.TextView;

import com.j256.ormlite.android.apptools.OrmLiteBaseActivity;
import com.j256.ormlite.dao.Dao;

public class BuildingActivity extends OrmLiteBaseActivity<DatabaseHelper> implements OnCheckedChangeListener, Preferences {

	final static String TAG = "BusTimeActivity";

	private Context instance;

	private ImageButton imageButton;

	private TextView buildingName;

	private Building building;

	private ProgressBar progressBar;
	private TextView message;

	private CheckBox favouritesCheckBox;

	private Drawable buildingImage;

	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.building_activity);
		instance = this;

		String ID; // The identifier of the Building

		Log.i(TAG, "getIntent().getDataString() " + getIntent().getDataString());

		if (getIntent().getDataString().startsWith("http://data")) {
			String[] uriParts = getIntent().getDataString().split("/");

			ID = uriParts[uriParts.length - 1].replace(".html", "");
		} else {
			String[] uriParts = getIntent().getDataString().split("/");

			ID = uriParts[uriParts.length - 1];
		}

		final SharedPreferences favouritesPrefs = instance.getSharedPreferences(FAVOURITES_PREFERENCES, 0);

		favouritesCheckBox = (CheckBox) findViewById(R.id.buildingActivityFavouriteCheckBox);
		favouritesCheckBox.setChecked(favouritesPrefs.getBoolean(ID, false));
		favouritesCheckBox.setOnCheckedChangeListener(this);

		buildingName = (TextView) findViewById(R.id.buildingActivityName);

		progressBar = (ProgressBar) findViewById(R.id.buildingActivityLoadBar);
		progressBar.setVisibility(View.VISIBLE);
		message = (TextView) findViewById(R.id.buildingActivityMessage);
		message.setVisibility(View.GONE);

		imageButton = (ImageButton) findViewById(R.id.buildingActivityImage);
		imageButton.setVisibility(View.GONE);

		Log.i(TAG, "Building id " + ID);

		try {
			Dao<Building, String> buildingDao = getHelper().getBuildingDao();

			building = buildingDao.queryForId(ID);

			buildingName.setText("Building " + building.id + " - " + building.name);

		} catch (SQLException e1) {
			e1.printStackTrace();
		}

	}

	protected void onResume() {
		super.onResume();
		buildingImage = (Drawable) getLastNonConfigurationInstance();
		if (buildingImage == null) {
			GetBuildingImageTask buildingImageTask = new GetBuildingImageTask();
			buildingImageTask.execute(building);
		} else {
			imageButton.setImageDrawable(buildingImage);
			imageButton.setVisibility(View.VISIBLE);
			imageButton.setScaleType(ScaleType.CENTER_INSIDE);
			imageButton.setOnClickListener(new View.OnClickListener() {
				public void onClick(View v) {

				}
			});
		}
	}

	class GetBuildingImageTask extends AsyncTask<Building, Integer, Drawable> {
		String errorMessage;

		@Override
		protected Drawable doInBackground(Building... buildings) {
			Building building = buildings[0];

			Log.i(TAG, "Getting image for " + building);

			try {

				Display display = ((WindowManager) getSystemService(WINDOW_SERVICE)).getDefaultDisplay();

				int orientation = display.getOrientation();
				Log.i(TAG, "orientation " + orientation);
				Log.i(TAG, "width " + display.getWidth() + " height " + display.getHeight());
				int width;
				width = display.getWidth();

				URL imageURL;
				Log.i(TAG, "Screen width " + width);
				if (width >= 1000) {
					imageURL = new URL("http://data.southampton.ac.uk/images/buildings/1000/" + building.id + ".jpg");
				} else if (width >= 800) {
					imageURL = new URL("http://data.southampton.ac.uk/images/buildings/1000/" + building.id + ".jpg");
				} else if (width >= 600) {
					imageURL = new URL("http://data.southampton.ac.uk/images/buildings/600/" + building.id + ".jpg");
				} else if (width >= 400) {
					imageURL = new URL("http://data.southampton.ac.uk/images/buildings/600/" + building.id + ".jpg");
				} else if (width >= 300) {
					imageURL = new URL("http://data.southampton.ac.uk/images/buildings/300/" + building.id + ".jpg");
				} else if (width >= 200) {
					imageURL = new URL("http://data.southampton.ac.uk/images/buildings/200/" + building.id + ".jpg");
				} else {
					imageURL = new URL("http://data.southampton.ac.uk/images/buildings/100/" + building.id + ".jpg");
				}
				Log.i(TAG, "URL " + imageURL);

				InputStream is = (InputStream) imageURL.getContent();
				Drawable image = Drawable.createFromStream(is, "src");

				return image;

			} catch (MalformedURLException e) {
				e.printStackTrace();
				errorMessage = "MalformedURLException";
			} catch (IOException e) {
				e.printStackTrace();
				errorMessage = "No Image (Either none avalible, or a connection issue)";
			}

			return null;
		}

		protected void onPostExecute(Drawable image) {
			progressBar.setVisibility(View.GONE);

			if (image != null) {
				Log.i(TAG, "Got a image for " + building + ", now displaying it");

				buildingImage = image;

				imageButton = (ImageButton) findViewById(R.id.buildingActivityImage);
				imageButton.setImageDrawable(image);
				imageButton.setVisibility(View.VISIBLE);
				imageButton.setScaleType(ScaleType.CENTER_INSIDE);
				imageButton.setOnClickListener(new View.OnClickListener() {
					public void onClick(View v) {

					}
				});
			} else {
				Log.e(TAG, "Error, null image, " + errorMessage);

				message.setText(errorMessage);
				message.setVisibility(View.VISIBLE);
			}
		}
	}

	@Override
	public Object onRetainNonConfigurationInstance() {
		return buildingImage;
	}

	public void onCheckedChanged(CompoundButton button, boolean checked) {
		SharedPreferences favouritesPreferences = getSharedPreferences(FAVOURITES_PREFERENCES, 0);

		if (checked) {
			favouritesPreferences.edit().putBoolean(building.id, true).commit();
		} else {
			favouritesPreferences.edit().remove(building.id).commit();
		}
	}

}