Class: CTA::TrainTracker::Parser

Inherits:
Faraday::Response::Middleware
  • Object
show all
Defined in:
lib/cta_redux/faraday_middleware/train_tracker_parser.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, debug) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/cta_redux/faraday_middleware/train_tracker_parser.rb', line 4

def initialize(app, debug)
  @debug = debug
  super(app)
end

Instance Method Details

#call(request_env) ⇒ Object 



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# File 'lib/cta_redux/faraday_middleware/train_tracker_parser.rb', line 9

def call(request_env)
  api_response = nil

  @app.call(request_env).on_complete do |response_env|
    parsed_body = ::MultiXml.parse(response_env.body)

    if has_errors?(parsed_body)
      api_response = CTA::API::Response.new(parsed_body, response_env.body, @debug)
    else
      case response_env.url.to_s
      when /ttarrivals\.aspx/
        api_response = ArrivalsResponse.new(parsed_body, response_env.body, @debug)
      when /ttfollow\.aspx/
        api_response = FollowResponse.new(parsed_body, response_env.body, @debug)
      when /ttpositions\.aspx/
        api_response = PositionsResponse.new(parsed_body, response_env.body, @debug)
      end
    end
  end

  api_response
end

#has_errors?(parsed_body) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cta_redux/faraday_middleware/train_tracker_parser.rb', line 32

def has_errors?(parsed_body)
  parsed_body["ctatt"]["errCd"] != "0"
end