Add reach_estimate to AdAccount

.rubocop.yml

@@ -26,6 +26,8 @@ Style/IndentationWidth:
   Enabled: false
 Style/ElseAlignment:
   Enabled: false
+Style/GuardClause:
+  Enabled: false
 
 Lint/EndAlignment:
   Enabled: false

lib/facebook_ads/ad_account.rb

@@ -96,18 +96,39 @@ def ad_insights(range: Date.today..Date.today, level: 'ad', time_increment: 1)
       end.flatten
     end
 
+    def reach_estimate(targeting:, optimization_goal:, currency: 'USD')
+      raise Exception, "Optimization goal must be one of: #{AdSet::OPTIMIZATION_GOALS.join(', ')}" unless AdSet::OPTIMIZATION_GOALS.include?(optimization_goal)
+
+      if targeting.is_a?(AdTargeting)
+        if targeting.validate!
+          targeting = targeting.to_hash
+        else
+          raise Exception, 'The provided targeting spec is not valid.'
+        end
+      end
+
+      query = {
+        targeting_spec: targeting.to_json,
+        optimize_for: optimization_goal,
+        currency: currency
+      }
+      self.class.get("/#{id}/reachestimate", query: query, objectify: false)
+    end
+
     # has_many applications
 
     def applications
       self.class.get("/#{id}/advertisable_applications", objectify: false)
     end
 
-    def create_ad_audience_with_pixel(name:, pixel_id:, event_name:)
+    # hash_many ad_audiences
+
+    def create_ad_audience_with_pixel(name:, pixel_id:, event_name:, subtype: 'WEBSITE', retention_days: 15)
       query = {
         name: name,
         pixel_id: pixel_id,
-        subtype: 'WEBSITE',
-        retention_days: 15,
+        subtype: subtype,
+        retention_days: retention_days,
         rule: { event: { i_contains: event_name } }.to_json,
         prefill: 1
       }

lib/facebook_ads/ad_campaign.rb

@@ -19,8 +19,8 @@ def ad_sets(effective_status: ['ACTIVE'], limit: 100)
     end
 
     def create_ad_set(name:, promoted_object:, targeting:, daily_budget:, optimization_goal:, billing_event: 'IMPRESSIONS', status: 'ACTIVE', is_autobid: true)
-      raise Exception, "Optimization goal must be one of: #{AdSet::OPTIMIZATION_GOALS.to_sentence}" unless AdSet::OPTIMIZATION_GOALS.include?(optimization_goal)
-      raise Exception, "Billing event must be one of: #{AdSet::BILLING_EVENTS.to_sentence}" unless AdSet::BILLING_EVENTS.include?(billing_event)
+      raise Exception, "Optimization goal must be one of: #{AdSet::OPTIMIZATION_GOALS.join(', ')}" unless AdSet::OPTIMIZATION_GOALS.include?(optimization_goal)
+      raise Exception, "Billing event must be one of: #{AdSet::BILLING_EVENTS.join(', ')}" unless AdSet::BILLING_EVENTS.include?(billing_event)
 
       if targeting.is_a?(Hash)
         # NOP

lib/facebook_ads/ad_targeting.rb

@@ -53,7 +53,7 @@ def to_hash
         user_os: user_os,
         user_device: user_device,
         app_install_state: app_install_state
-      }.compact
+      }.reject { |_k, v| v.nil? }
     end
   end
 end

spec/facebook_ads/ad_account_spec.rb

@@ -78,4 +78,16 @@
       verify(format: :json) { JSON.dump(ads) }
     end
   end
+
+  describe '.reach_estimate' do
+    it 'estimates the reach of a targeting spec', :vcr do
+      targeting = FacebookAds::AdTargeting.new
+      targeting.genders = [FacebookAds::AdTargeting::WOMEN]
+      targeting.age_min = 18
+      targeting.age_max = 20
+      targeting.countries = ['US']
+      reach = account.reach_estimate(targeting: targeting, optimization_goal: 'OFFSITE_CONVERSIONS')
+      verify(format: :json) { JSON.dump(reach) }
+    end
+  end
 end