/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * 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 com.android.calendar.alerts;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.provider.CalendarContract;
import android.provider.CalendarContract.CalendarAlerts;
import android.text.TextUtils;
import android.text.format.DateFormat;
import android.text.format.DateUtils;
import android.text.format.Time;
import android.util.Log;

import com.android.calendar.EventInfoActivity;
import com.android.calendar.R;
import com.android.calendar.Utils;

import java.util.Locale;
import java.util.Map;
import java.util.TimeZone;

public class AlertUtils {
    private static final String TAG = "AlertUtils";
    static final boolean DEBUG = true;

    public static final long SNOOZE_DELAY = 5 * 60 * 1000L;

    // We use one notification id for the expired events notification.  All
    // other notifications (the 'active' future/concurrent ones) use a unique ID.
    public static final int EXPIRED_GROUP_NOTIFICATION_ID = 0;

    public static final String EVENT_ID_KEY = "eventid";
    public static final String EVENT_START_KEY = "eventstart";
    public static final String EVENT_END_KEY = "eventend";
    public static final String NOTIFICATION_ID_KEY = "notificationid";
    public static final String EVENT_IDS_KEY = "eventids";
    public static final String EVENT_STARTS_KEY = "starts";

    // A flag for using local storage to save alert state instead of the alerts DB table.
    // This allows the unbundled app to run alongside other calendar apps without eating
    // alerts from other apps.
    static boolean BYPASS_DB = true;

    /**
     * Creates an AlarmManagerInterface that wraps a real AlarmManager.  The alarm code
     * was abstracted to an interface to make it testable.
     */
    public static AlarmManagerInterface createAlarmManager(Context context) {
        final AlarmManager mgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        return new AlarmManagerInterface() {
            @Override
            public void set(int type, long triggerAtMillis, PendingIntent operation) {
                if (Utils.isKeyLimePieOrLater()) {
                    mgr.setExact(type, triggerAtMillis, operation);
                } else {
                    mgr.set(type, triggerAtMillis, operation);
                }
            }
        };
    }

    /**
     * Schedules an alarm intent with the system AlarmManager that will notify
     * listeners when a reminder should be fired. The provider will keep
     * scheduled reminders up to date but apps may use this to implement snooze
     * functionality without modifying the reminders table. Scheduled alarms
     * will generate an intent using AlertReceiver.EVENT_REMINDER_APP_ACTION.
     *
     * @param context A context for referencing system resources
     * @param manager The AlarmManager to use or null
     * @param alarmTime The time to fire the intent in UTC millis since epoch
     */
    public static void scheduleAlarm(Context context, AlarmManagerInterface manager,
            long alarmTime) {
    }

    public static Intent buildEventViewIntent(Context c, long eventId, long begin, long end) {
        Intent i = new Intent(Intent.ACTION_VIEW);
        Uri.Builder builder = CalendarContract.CONTENT_URI.buildUpon();
        builder.appendEncodedPath("events/" + eventId);
        i.setData(builder.build());
        i.setClass(c, EventInfoActivity.class);
        i.putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME, begin);
        i.putExtra(CalendarContract.EXTRA_EVENT_END_TIME, end);
        return i;
    }
}