Gemfile

@@ -31,6 +31,9 @@ gem 'omniauth-tumblr'

                 gem 'dropbox-api'
              

                 gem 'omniauth-dropbox'
              

                 
              

                +# UserLocationAgent
              

                +gem 'haversine'
              

                +
              

                 # Optional Services.
              

                 gem 'omniauth-37signals'          # BasecampAgent
              

                 # gem 'omniauth-github'
              

Gemfile.lock

@@ -170,6 +170,7 @@ GEM

                       guard (~> 2.1)
              

                       rspec (>= 2.14, < 4.0)
              

                     hashie (2.0.5)
              

                +    haversine (0.3.0)
              

                     hike (1.2.3)
              

                     hipchat (1.2.0)
              

                       httparty
              
@@ -476,6 +477,7 @@ DEPENDENCIES

                   guard
              

                   guard-livereload
              

                   guard-rspec
              

                +  haversine
              

                   hipchat (~> 1.2.0)
              

                   httparty (~> 0.13)
              

                   hypdf (~> 1.0.7)
              

app/models/agents/user_location_agent.rb

@@ -1,4 +1,5 @@

                 require 'securerandom'
              

                +require 'haversine'
              

                 
              

                 module Agents
              

                   class UserLocationAgent < Agent
              
@@ -38,7 +39,8 @@ module Agents

                     def default_options
              

                       {
              

                         'secret' => SecureRandom.hex(7),
              

                -        'max_accuracy' => ''
              

                +        'max_accuracy' => '',
              

                +        'distance' => '',
              

                       }
              

                     end
              

                 
              
@@ -75,11 +77,25 @@ module Agents

                 
              

                       accuracy_field = interpolated[:accuracy_field].presence || 'accuracy'
              

                 
              

                -      if location.present? && (!interpolated[:max_accuracy].present? || !payload[accuracy_field] || payload[accuracy_field].to_i < interpolated[:max_accuracy].to_i)
              

                +      def accurate_enough?(payload, accuracy_field)
              

                +        !interpolated[:max_accuracy].present? || !payload[accuracy_field] || payload[accuracy_field].to_i < interpolated[:max_accuracy].to_i
              

                +      end
              

                +
              

                +      def far_enough?(payload)
              

                +        if memory['last_location'].present?
              

                +          travel = Haversine.distance(memory['last_location']['latitude'].to_i, memory['last_location']['longitude'].to_i, payload['latitude'].to_i, payload['longitude'].to_i).to_meters
              

                +          !interpolated[:distance].present? || travel > interpolated[:distance].to_i
              

                +        else # for the first run, before "last_location" exists
              

                +          true
              

                +        end
              

                +      end
              

                +
              

                +      if location.present? && accurate_enough?(payload, accuracy_field) && far_enough?(payload)
              

                         if interpolated[:max_accuracy].present? && !payload[accuracy_field].present?
              

                           log "Accuracy field missing; all locations will be kept"
              

                         end
              

                         create_event payload: payload, location: location
              

                +        memory["last_location"] = payload
              

                       end
              

                     end
              

                   end