Class: DCMetro::Information

Inherits:
Object
  • Object
show all
Defined in:
lib/dcmetro.rb

Constant Summary collapse

BASE_URL = 
"https://api.wmata.com"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Information

Returns a new instance of Information.



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# File 'lib/dcmetro.rb', line 10

def initialize
  @metro_incidents = metro_incidents
  @metro_lines = metro_lines
  @metro_stations = metro_stations
  @station_code = ""
  @metro_time = metro_time
  @travel_info = travel_info
end

Instance Attribute Details

#metro_incidents ⇒ Object

Returns the value of attribute metro_incidents.



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# File 'lib/dcmetro.rb', line 6

def metro_incidents
  @metro_incidents
end

#metro_lines ⇒ Object

Returns the value of attribute metro_lines.



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# File 'lib/dcmetro.rb', line 6

def metro_lines
  @metro_lines
end

#metro_stations ⇒ Object

Returns the value of attribute metro_stations.



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# File 'lib/dcmetro.rb', line 6

def metro_stations
  @metro_stations
end

#metro_time ⇒ Object

Returns the value of attribute metro_time.



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# File 'lib/dcmetro.rb', line 6

def metro_time
  @metro_time
end

#station_code ⇒ Object

Returns the value of attribute station_code.



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# File 'lib/dcmetro.rb', line 6

def station_code
  @station_code
end

#travel_info ⇒ Object

Returns the value of attribute travel_info.



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# File 'lib/dcmetro.rb', line 6

def travel_info
  @travel_info
end

Instance Method Details

#alerts ⇒ Object 



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# File 'lib/dcmetro.rb', line 19

def alerts
  #
  # Makes the api call and returns the alerts
  @metro_incidents = RestClient.get "#{BASE_URL}/Incidents.svc/json/Incidents", :params => {
      "api_key" => API_KEY,
      "subscription-key" => API_KEY
  }

end

#line(color = nil) ⇒ Object

alerts



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# File 'lib/dcmetro.rb', line 29

def line(color=nil)
  #
  # Makes the api call and returns either the stations on a particular line or
  # if no color is passed, returns the metro lines

  if !color.nil?
    color = color.downcase

    case color
    when "red"
      color = "RD"
    when "green"
      color = "GR"
    when "yellow"
      color = "YL"
    when "blue"
      color = "BL"
    when "orange"
      color = "OR"
    else
      color = "SV"
    end
    
    @metro_stations = RestClient.get "#{BASE_URL}/Rail.svc/json/jStations", :params => {
    "LineCode" => color,
    "api_key" => API_KEY,
    "subscription-key" => API_KEY
    }

    # @metro_stations = parse_json metro_stations
    # @metro_stations['Stations']
  else
    @metro_lines = RestClient.get "#{BASE_URL}/Rail.svc/json/JLines", :params => {
    "api_key" => API_KEY,
    "subscription-key" => API_KEY
    }

    # @metro_lines = metro_lines
    # @metro_lines['Lines']

    # @metro_lines = get_all_stations
  end
end

#station(source, destination = nil) ⇒ Object

line



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# File 'lib/dcmetro.rb', line 73

def station(source,destination=nil)
  #
  # Makes the api call to return all stations in the Metro rail system and
  # then grabs the specific station passed by the user

  # instantiates a new array to help check for multiple matching stations
  stations_check = []

  # forming the api call
  @metro_stations = JSON.parse(get_all_stations)

  if destination.nil?
    # Iterates through the response checking if the station name passed by the user
    # is included in the return response
    @metro_stations['Stations'].each do |station_name|
      if station_name['Name'].downcase.include? source.downcase
        # if the names of the station matches the user's station, the station
        # is pushed to an array
        stations_check.push(station_name)
      end
    end
    # Oddly, the api seems to return some stations twice - since some stations have more than
    # one line.  Though the additional station information is contained in each instance of the 
    # station. 
    # We limit our array to only unique station names, hopefully limiting the array to a single item
    stations_check.uniq! { |station| station['Name'] }

    # If the array length is greater than 1, we ask the user to be more specific and 
    # return the names of the stations
    if stations_check.length > 1
      puts "****Multiple stations found****"
      stations_check.each_with_index do |station,i|
        puts  "#{i} #{station['Name']}"
      end
      puts "****Please be more specific, enter the number below ****"
      specific = STDIN.gets.chomp.to_i
      station_time stations_check[specific]
    else
      # We pass the station the station_time method to grab the predictions
      station_time stations_check[0]
    end
  else
    stations = [source, destination]
    station_code = []
    stations.each do |station|
      @metro_stations['Stations'].each do |station_name|
        if station_name['Name'].downcase.include? station.downcase
          station_code << station_name
        end
      end
    end
    station_code.uniq! { |station| station['Name'] }
    if station_code.length > 2
      puts "****Multiple stations found****"
      station_code.each_with_index do |station,i|
        puts  "#{i} #{station['Name']}"
      end
      puts "****Please be more specific****"
      puts "Enter the number of your starting station."
      start = STDIN.gets.chomp.to_i
      puts "Enter the number of your destination station."
      destination = STDIN.gets.chomp.to_i
      @travel_info = RestClient.get "#{BASE_URL}/Rail.svc/json/jSrcStationToDstStationInfo", :params => {
        "FromStationCode" => station_code[start]['Code'],
        "ToStationCode" => station_code[destination]['Code'],
        "api_key" => API_KEY,
        "subscription-key" => API_KEY
      }
    else
      @travel_info = RestClient.get "#{BASE_URL}/Rail.svc/json/jSrcStationToDstStationInfo", :params => {
        "FromStationCode" => station_code[0]['Code'],
        "ToStationCode" => station_code[1]['Code'],
        "api_key" => API_KEY,
        "subscription-key" => API_KEY
      }
    end
  end
end