generateFilters static method

List<Filter> generateFilters({ List<String>? dataLogsType, List<String>? logLevels, int? startTimeInMillis, int? endTimeInMillis, FilterType? filterType, })

Implementation

static List<Filter> generateFilters({
  List<String>? dataLogsType,
  List<String>? logLevels,
  int? startTimeInMillis,
  int? endTimeInMillis,
  FilterType? filterType,
}) {
  //creating list of filters
  var filters = <Filter>[];
  var timestampFilters = <Filter>[];

  //check to see if dataLogsType is not null
  if (dataLogsType != null && dataLogsType.length > 0) {
    final dataLogTypeFilter =
        Filter.inList(DBConstants.FIELD_DATA_LOG_TYPE, dataLogsType);
    filters.add(dataLogTypeFilter);
  }

  //check to see if logLevels is not null
  if (logLevels != null && logLevels.length > 0) {
    final logLevelsFilter =
        Filter.inList(DBConstants.FIELD_LOG_LEVEL, logLevels);
    filters.add(logLevelsFilter);
  }

  //check to see if both start and end times are provided
  if (startTimeInMillis != null && endTimeInMillis != null) {
    timestampFilters = [
      Filter.greaterThan(DBConstants.FIELD_TIME_IN_MILLIS, startTimeInMillis),
      Filter.lessThan(DBConstants.FIELD_TIME_IN_MILLIS, endTimeInMillis)
    ];

    filters.addAll(timestampFilters);
  }

  //check to see if user provided start time
  if (startTimeInMillis != null) {
    final startTimeFilter = Filter.greaterThan(
        DBConstants.FIELD_TIME_IN_MILLIS, startTimeInMillis);
    filters.add(startTimeFilter);
  }

  //check to see if user provided end time
  if (endTimeInMillis != null) {
    final endTimeFilter =
        Filter.lessThan(DBConstants.FIELD_TIME_IN_MILLIS, endTimeInMillis);
    filters.add(endTimeFilter);
  }

  //check to see if user provided FilterType
  //if either start or end time is provided, this will not be executed
  //this will have less priority over them
  if (startTimeInMillis == null &&
      endTimeInMillis == null &&
      filterType != null) {
    final timeInMillis =
        DateTimeUtils.getStartAndEndTimestamps(type: filterType);

    final timeFilter =
        Filter.greaterThan(DBConstants.FIELD_TIME_IN_MILLIS, timeInMillis);
    filters.add(timeFilter);
  }

  return filters;
}