/*
 * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
 *
 * 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 net.micode.notes.ui;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;

import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;

/**
  * @ProjectName:    Alarm
  * @Package:        net.micode.notes.ui
  * @ClassName:      AlarmInitReceiver
  * @Description:    确定时间，构建闹钟
  * @Author:         wyf
  * @CreateDate:     2023/12/24 16:53
 */
public class AlarmInitReceiver extends BroadcastReceiver {
    //对数据库的操作，调用标签ID和闹钟时间
    private static final String [] PROJECTION = new String [] {
        NoteColumns.ID,
        NoteColumns.ALERTED_DATE
    };

    private static final int COLUMN_ID                = 0;
    private static final int COLUMN_ALERTED_DATE      = 1;
     /**
      * @method:     onReceive
      * @description:获取闹钟时间并创建闹钟
      * @date:       2023/12/24 17:23
      * @author:     wyf
      * @param:      class
      * @return:     void
      */
    @Override
    public void onReceive(Context context, Intent intent) {
        long currentDate = System.currentTimeMillis();//System.currentTimeMillis()产生一个当前的毫秒,这个毫秒其实就是自1970年1月1日0时起的毫秒数
        //将long变量currentDate转化为字符串
        //Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签
        Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
                PROJECTION,
                NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
                new String[] { String.valueOf(currentDate) },
                null);

        if (c != null) {
            if (c.moveToFirst()) {
                do {//跟据数据库里的闹钟时间创建一个闹钟机制
                    long alertDate = c.getLong(COLUMN_ALERTED_DATE);
                    Intent sender = new Intent(context, AlarmReceiver.class);
                    sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
                    PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
                    AlarmManager alermManager = (AlarmManager) context
                            .getSystemService(Context.ALARM_SERVICE);
                    alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
                } while (c.moveToNext());
            }
            c.close();
        }
    }
}
