Add extra context to IntercomError

* request_id that helps when contacting intercom support
* 'field' that denotes the cause of a validation error

Author: gondalez

lib/intercom/errors.rb

@@ -2,10 +2,12 @@ module Intercom
 
   # Base class exception from which all public Intercom exceptions will be derived
   class IntercomError < StandardError
-    attr_reader :http_code, :application_error_code
-    def initialize(message, http_code = nil, error_code = application_error_code)
-      @http_code = http_code
-      @application_error_code = error_code
+    attr_reader :http_code, :application_error_code, :field, :request_id
+    def initialize(message, context={})
+      @http_code = context[:http_code]
+      @application_error_code = context[:application_error_code]
+      @field = context[:field]
+      @request_id = context[:request_id]
       super(message)
     end
   end

lib/intercom/request.rb

@@ -74,7 +74,7 @@ def execute(target_base_url=nil)
         raise Intercom::ServiceConnectionError.new('Failed to connect to service [connection attempt timed out]')
       end
     end
-    
+
     def decode_body(response)
       decode(response['content-encoding'], response.body)
     end
@@ -124,10 +124,13 @@ def raise_application_errors_on_failure(error_list_details, http_code)
       # Currently, we don't support multiple errors
       error_details = error_list_details['errors'].first
       error_code = error_details['type'] || error_details['code']
+      error_field = error_details['field']
       parsed_http_code = (http_code > 0 ? http_code : nil)
       error_context = {
         :http_code => parsed_http_code,
-        :application_error_code => error_code
+        :application_error_code => error_code,
+        :field => error_field,
+        :request_id => error_list_details['request_id']
       }
       case error_code
       when 'unauthorized', 'forbidden'