/*
 * 				Firetweet - Twitter client for Android
 * 
 *  Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.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, either version 3 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, see <http://www.gnu.org/licenses/>.
 */

package org.getlantern.firetweet.preference;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.res.TypedArray;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.widget.ListView;

import org.getlantern.firetweet.Constants;
import org.getlantern.firetweet.R;

public class NotificationTypePreference extends DialogPreference implements Constants {

	private final int mDefaultValue;

	public NotificationTypePreference(final Context context) {
		this(context, null);
	}

	public NotificationTypePreference(final Context context, final AttributeSet attrs) {
		this(context, attrs, android.R.attr.dialogPreferenceStyle);
	}

	public NotificationTypePreference(final Context context, final AttributeSet attrs, final int defStyle) {
		super(context, attrs, defStyle);
		final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.NotificationTypePreference);
		mDefaultValue = a.getInteger(R.styleable.NotificationTypePreference_notificationType, 0);
		a.recycle();
	}

	@Override
	public void onClick(final DialogInterface dialog, final int which) {
		final Dialog showingDialog = getDialog();
		if (!(showingDialog instanceof AlertDialog)) return;
		final AlertDialog alertDialog = (AlertDialog) showingDialog;
		final ListView listView = alertDialog.getListView();
		if (listView == null) return;
		int value = 0;
		final int[] flags = getFlags();
		for (int i = 0, j = flags.length; i < j; i++) {
			if (listView.isItemChecked(i)) {
				value |= flags[i];
			}
		}
		persistInt(value);
	}

	@Override
	public void onPrepareDialogBuilder(final AlertDialog.Builder builder) {
		super.onPrepareDialogBuilder(builder);
		builder.setPositiveButton(android.R.string.ok, this);
		builder.setNegativeButton(android.R.string.cancel, null);
		final int value = getPersistedInt(mDefaultValue);
		builder.setMultiChoiceItems(getEntries(), getCheckedItems(value), null);
	}

	private boolean[] getCheckedItems(final int value) {
		final int[] flags = getFlags();
		final boolean[] checkedItems = new boolean[flags.length];
		for (int i = 0, j = flags.length; i < j; i++) {
			checkedItems[i] = (value & flags[i]) != 0;
		}
		return checkedItems;
	}

	private String[] getEntries() {
		final Context context = getContext();
		final String[] entries = new String[3];
		entries[0] = context.getString(R.string.ringtone);
		entries[1] = context.getString(R.string.vibration);
		entries[2] = context.getString(R.string.light);
		return entries;
	}

	private int[] getFlags() {
		return new int[] { VALUE_NOTIFICATION_FLAG_RINGTONE, VALUE_NOTIFICATION_FLAG_VIBRATION,
				VALUE_NOTIFICATION_FLAG_LIGHT };
	}

}