dawarich/app/services/google_maps/timeline_parser.rb

# frozen_string_literal: true

class GoogleMaps::TimelineParser
  attr_reader :file_path, :file, :json, :import_id

  def initialize(file_path, import_id = nil)
    @file_path = file_path

    raise 'File not found' unless File.exist?(@file_path)

    @file = File.read(@file_path)
    @json = JSON.parse(@file)
    @import_id = import_id
  end

  def call
    points_data = parse_json

    points_data.each do |point_data|
      Point.create(
        latitude: point_data[:latitude],
        longitude: point_data[:longitude],
        timestamp: point_data[:timestamp],
        raw_data: point_data[:raw_data],
        topic: 'Google Maps Timeline Export',
        tracker_id: 'google-maps-timeline-export',
        import_id: import_id
      )
    end
  end

  private

  def parse_json
    json['timelineObjects'].flat_map do |timeline_object|
      if timeline_object['activitySegment'].present?
        if timeline_object['activitySegment']['startLocation'].blank?
          next if timeline_object['activitySegment']['waypointPath'].blank?

          timeline_object['activitySegment']['waypointPath']['waypoints'].map do |waypoint|
            {
              latitude: waypoint['latE7'].to_f / 10**7,
              longitude: waypoint['lngE7'].to_f / 10**7,
              timestamp: DateTime.parse(timeline_object['activitySegment']['duration']['startTimestamp']),
              raw_data: timeline_object
            }
          end
        else
          {
            latitude: timeline_object['activitySegment']['startLocation']['latitudeE7'].to_f / 10**7,
            longitude: timeline_object['activitySegment']['startLocation']['longitudeE7'].to_f / 10**7,
            timestamp: DateTime.parse(timeline_object['activitySegment']['duration']['startTimestamp']),
            raw_data: timeline_object
          }
        end
      elsif timeline_object['placeVisit'].present?
        {
          latitude: timeline_object['placeVisit']['location']['latitudeE7'].to_f / 10**7,
          longitude: timeline_object['placeVisit']['location']['longitudeE7'].to_f / 10**7,
          timestamp: DateTime.parse(timeline_object['placeVisit']['duration']['startTimestamp']),
          raw_data: timeline_object
        }
      end
    end.reject(&:blank?)
  end
end