app/models/agents/user_location_agent.rb

@@ -1,12 +1,14 @@

                 require 'securerandom'
              

                -require 'haversine'
              

                 
              

                 module Agents
              

                   class UserLocationAgent < Agent
              

                     cannot_be_scheduled!
              

                 
              

                +    gem_dependency_check { defined?(Haversine) }
              

                +
              

                     description do
              

                       <<-MD
              

                +        #{'## Include `haversine` in your Gemfile to use this Agent!' if dependencies_missing?}
              

                         The UserLocationAgent creates events based on WebHook POSTS that contain a `latitude` and `longitude`.  You can use the [POSTLocation](https://github.com/cantino/post_location) or [PostGPS](https://github.com/chriseidhof/PostGPS) iOS app to post your location.
              

                 
              

                 
              
@@ -14,7 +16,7 @@ module Agents

                 
              

                         If you want to only keep more precise locations, set `max_accuracy` to the upper bound, in meters. The default name for this field is `accuracy`, but you can change this by setting a value for `accuracy_field`.
              

                 
              

                -        If you want to require a certain distance traveled, set `distance` to the minimum distance, in meters. Note that GPS readings and the measurement itself aren't exact, so don't rely on this for precision filtering.
              

                +        If you want to require a certain distance traveled, set `min_distance` to the minimum distance, in meters. Note that GPS readings and the measurement itself aren't exact, so don't rely on this for precision filtering.
              

                       MD
              

                     end
              

                 
              
@@ -42,7 +44,7 @@ module Agents

                       {
              

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

                         'max_accuracy' => '',
              

                -        'distance' => '',
              

                +        'min_distance' => '',
              

                       }
              

                     end
              

                 
              
@@ -86,7 +88,7 @@ module Agents

                       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
              

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

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

                           true
              

                         end