Dashing Airport Wait Times Dashboard Widget

README.md

Airport Wait Times

TSA Wait times at a specific airport. Using the MyTSA API - https://www.dhs.gov/mytsa-api-documentation All data is crowd sourced through http://apps.tsa.dhs.gov/mytsa/

All you have to do is replace airport_code with your 3 character airport code. This is USA only.

Installation

gem install json

gem install crack

waittime.coffee

class Dashing.Waittime extends Dashing.Widget
  onData: (data) ->

waittime.erb

<li data-row="1" data-col="1" data-sizex="1" data-sizey="1">
  <div data-id="waittime" data-view="Waittime" data-title="Airport Wait Time"></div>
</li>

waittime.html

<h1 class="title" data-bind="title"></h1>

<h2 class="checkpoint" data-bind="checkpoint"></h2>

<h3 class="waittime" data-bind="waittime | prepend prefix | append suffix"></h3>

<p class="change-rate">
  <i class="icon-time"></i><span data-bind="status"></span>
</p>

<p class="more-info" data-bind="info | raw"></p>

<p class="updated-at" data-bind="updatedAtMessage"></p>

waittime.rb

require 'HTTParty'
require 'json' 
require 'crack'

airport_code = 'syr'

wait_time_values = ["No Wait", "1-10 minutes", "11-20 minutes", "21-30 minutes", "31+ minutes"]
airports_resource = 'http://www.tsa.gov/data/apcp.xml'
airport_checkpoint_resource = 'http://apps.tsa.dhs.gov/MyTSAWebService/GetWaitTimes.ashx'
airport_name = airport_code


SCHEDULER.every '60s', :first_in => 0 do |job|
  airport_checkpoint_waittimes = []
  output = []  
  airports_resource_response = HTTParty.get(airports_resource)

  airports_resource_xml = Crack::XML.parse(airports_resource_response.body)
  airports_resource_json = Crack::JSON.parse(airports_resource_xml.to_json)

  airports_resource_json['airports']['airport'].each do |airport|
    if airport['shortcode'] == airport_code.upcase
      airport_name = airport['name']

      # Stupidness in JSON convesion.. SHould always be array        
      if !airport['checkpoints']['checkpoint'].kind_of?(Array)
        airport['checkpoints']['checkpoint'] = [airport['checkpoints']['checkpoint']]
      end

      # Airport Checkpoints
      airport['checkpoints']['checkpoint'].each do |checkpoint|
        # puts "Getting Checkpoints"
        # puts "Checkpoint Id: " + checkpoint['id']
        # puts "Checkpoint Name: " + checkpoint['longname']

        airport_checkpoint_resouce_response = HTTParty.get(airport_checkpoint_resource, { :query => { :ap => airport_code, :output => 'json'} })
        airport_checkpoint_resouce_json = JSON.parse(airport_checkpoint_resouce_response.body)

        airport_checkpoint_resouce_json['WaitTimes'].each do |waittime|        
          if waittime['CheckpointIndex'] == checkpoint['id']
            # puts "Wait Time " + waittime['WaitTimeIndex'] + " minutes"
            # puts "Updated: " + waittime["Created_Datetime"] #9/2/2013 2:24:33 AM
            # 
            checkpoint_last_updated_at = DateTime.strptime(waittime["Created_Datetime"], '%m/%d/%Y %H:%M:%S %p')
            
            if checkpoint_last_updated_at.to_date == Date.today
              # puts waittime["Created_Datetime"] + " Is TODAY!"
              airport_checkpoint_waittimes << {
                :id        => checkpoint["id"], 
                :name       => checkpoint["longname"],
                :wait_time  => waittime['WaitTimeIndex'],
                :updated_at => checkpoint_last_updated_at
              }
            end
          end
        end
      end
    end
  end

  # Create groups of checkpoints
  groups = Hash.new{|h,k| h[k] = [] }
  airport_checkpoint_waittimes.each {|checkpoint| groups[checkpoint[:id]] << checkpoint }

  # parse checkpoints into new hash
  groups.each do |group, data|
    data.sort_by!{ |c| c[:updated_at].to_s.to_i}
    if data.size > 1
      if data[0][:wait_time] < data[1][:wait_time]
        time_status = "decraseing"
      elsif data[0][:wait_time] == data[1][:wait_time]
        time_status = "holding steady"
      else
        time_status = "increasing"
      end
    
      output << { 
        :id          => data[0][:id],
        :name        => data[0][:name],
        :wait_time   => wait_time_values[(data[0][:wait_time].to_i) - 1],
        :time_status => time_status,
        :update      => data[0][:updated_at]
      }
    else 
      output << { 
        :id         => data[0][:id],
        :name        => data[0][:name],
        :wait_time   => wait_time_values[(data[0][:wait_time].to_i) - 1],
        :time_status => nil,
        :update      => data[0][:updated_at]
      }
    end
  end

  if output.empty?
    send_event('waittime', { 
      title: airport_name,
      checkpoint: "No Wait times have been reported",
      waittime: "",
      status: "",
      info: data[0][:updated_at].strftime("Last TSA update: %m/%d/%Y at %I:%M%p")
    })
  else
    output.cycle do |o|
      send_event('waittime', { 
        title: airport_name,
        checkpoint: o[:name],
        waittime: o[:wait_time],
        status: "Wait time is " + o[:time_status],
        info: o[:update].strftime("Last TSA update: %m/%d/%Y at %I:%M%p")
      })

      sleep(60/output.size)
    end
  end
end

waittime.scss

// ----------------------------------------------------------------------------
// Sass declarations
// ----------------------------------------------------------------------------
$background-color:  #47bbb3;
$value-color:       #fff;

$title-color:       rgba(255, 255, 255, 0.7);
$moreinfo-color:    rgba(255, 255, 255, 0.7);

// ----------------------------------------------------------------------------
// Widget-waittime styles
// ----------------------------------------------------------------------------
.widget-waittime {

  background-color: $background-color;

  .title {
    color: $title-color;
  }

  .checkpoint {
    color: $value-color;
    font-size: 20px;
  }

  .change-rate {
    font-size: 15px;
    color: $value-color;
  }

  .more-info {
    color: $moreinfo-color;
  }

  .updated-at {
    color: rgba(0, 0, 0, 0.3);
  }

}

in waittime.rb, Line 101, the data array is not in scope at this point, it's only in scope inside the groups.each do block. So, if output is empty, as it was on my first run, because airport_checkpoint_waittimes was empty (no wait times reported on the current day, small airport), then this code will blow up @L101. I do have a fix, but it includes some other changes which you may or may not want. I'll submit a PR (you can do that on gists right?) if I can.