package edu.jiangxin.apktoolbox.android.dumpsys.alarm;
   
   import java.util.ArrayList;
   import java.util.List;
   
   public class AlarmBatch {
       private String signature;
       private String id;
       private int alarmCount;
      private long start;
      private long end;
      String flags;
  
      private List<Alarm> listAlarms = new ArrayList<>();
  
      public void appendAlarm(Alarm alarm) {
          alarm.setParentBatch(this);
          listAlarms.add(alarm);
      }
  
      public static AlarmBatch fromString(String batchDefinition) {
          String[] components = batchDefinition.split(" ");
          if (components.length < 4) {
              return null;
          }
          return new AlarmBatch(components);
      }
  
      private AlarmBatch(String[] components) {
          signature = "BATCH";
          id = components[0];
  
          if (components.length >= 5) {
              flags = components[4];
          }
  
          setParameter(components[1]);
          setParameter(components[2]);
          setParameter(components[3]);
      }
  
      private boolean setParameter(String expression) {
          String[] components = expression.split("=");
          if (components.length != 2) {
              return false;
          }
  
          if ("num".equals(components[0])) {
              alarmCount = Integer.valueOf(components[1]);
              return true;
          }
  
          // https://stackoverflow.com/questions/28742884/how-to-read-adb-shell-dumpsys-alarm-output
          // the start and end numbers represent the number of milliseconds that have elapsed since the system was last rebooted as described in this post, (https://stackoverflow.com/a/15400014/296725)
          // and also roughly represent the window of time in which the alarms in the batch should be triggered.
          if ("start".equals(components[0])) {
              start = Long.valueOf(components[1]);
              return true;
          }
  
          if ("end".equals(components[0])) {
              end = Long.valueOf(components[1]);
              return true;
          }
  
          return false;
      }
  
      public String getSignature() {
          return signature;
      }
  
      public String getId() {
          return id;
      }
  
      public int getAlarmCount() {
          return alarmCount;
      }
  
      public long getStart() {
          return start;
      }
  
      public long getEnd() {
          return end;
      }
  
      public String getFlags() {
          return flags;
      }
  
      public List<Alarm> getListAlarms() {
          return listAlarms;
      }
  }