Class: CTA::TrainTracker::ArrivalsResponse

Inherits:
API::Response show all
Defined in:
lib/cta_redux/api/train_tracker.rb

Instance Attribute Summary collapse

Attributes inherited from API::Response

#error, #parsed_body, #raw_body, #timestamp

Instance Method Summary collapse

Constructor Details

#initialize(parsed_body, raw_body, debug) ⇒ ArrivalsResponse

Returns a new instance of ArrivalsResponse.



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# File 'lib/cta_redux/api/train_tracker.rb', line 13

def initialize(parsed_body, raw_body, debug)
  super(parsed_body, raw_body, debug)

  eta_map = Array.wrap(parsed_body["ctatt"]["eta"]).inject({}) do |h, eta|
    h[eta["rt"]] ||= []
    h[eta["rt"]] << eta

    h
  end

  @routes = eta_map.map do |rt, etas|
    trains = etas.map do |t|
      train = CTA::Train.find_active_run(t["rn"], self.timestamp, (t["isDly"] == "1")).first
      if !train
        train = CTA::Train.find_active_run(t["rn"], self.timestamp, true).first
      end
      position = t.select { |k,v| ["lat", "lon", "heading"].include?(k) }
      train.live = CTA::Train::Live.new(position, t)

      train
    end

    route = CTA::Route.where(:route_id => rt.capitalize).first
    route.live = CTA::Route::Live.new(trains)

    route
  end

  @trains = @routes.map { |r| r.live.vehicles }.flatten
  @predictions = @trains.map { |t| t.live.predictions }.flatten
end

Instance Attribute Details

#predictions ⇒ Array<CTA::Train::Prediction> (readonly)

Note:

Convenience method, equivalent to calling trains.map { |t| t.live.predictions }.flatten

Returns An array of CTA::Train::Prediction objects that correspond to the predictions requested.

Returns:



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# File 'lib/cta_redux/api/train_tracker.rb', line 11

def predictions
  @predictions
end

#routes ⇒ Array<CTA::Route> (readonly)

Returns An array of Route objects that correspond to the predictions requested.

Returns:



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# File 'lib/cta_redux/api/train_tracker.rb', line 5

def routes
  @routes
end

#trains ⇒ Array<CTA::Train> (readonly)

Note:

Convenience method, equivalent to calling routes.map { |r| r.vehicles }.flatten

Returns An array of CTA::Train objects that correspond to the predictions requested.

Returns:



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# File 'lib/cta_redux/api/train_tracker.rb', line 8

def trains
  @trains
end