# frozen_string_literal: true

class TrackSerializer
  def initialize(user, track_ids)
    @user = user
    @track_ids = track_ids
  end

  def call
    return [] if track_ids.empty?

    tracks = user.tracks
      .where(id: track_ids)
      .order(start_at: :asc)

    tracks.map { |track| serialize_track_data(track) }
  end

  private

  attr_reader :user, :track_ids

  def serialize_track_data(track)
    {
      id: track.id,
      start_at: track.start_at.iso8601,
      end_at: track.end_at.iso8601,
      distance: track.distance.to_i,
      avg_speed: track.avg_speed.to_f,
      duration: track.duration,
      elevation_gain: track.elevation_gain,
      elevation_loss: track.elevation_loss,
      elevation_max: track.elevation_max,
      elevation_min: track.elevation_min,
      original_path: track.original_path.to_s
    }
  end
end