Send plausible event when color scheme updated

Author: rossta

app/clients/plausible_client.rb

@@ -10,15 +10,18 @@
 
 class PlausibleClient < ApplicationClient
   BASE_URI = "https://plausible.io/api"
+  DOMAIN = "joyofrails.com"
 
-  def post_event(name:, url:, domain: "joyofrails.com", headers: {})
+  def post_event(name:, url:, referrer: nil, props: nil, headers: {})
     post(
       "/event",
       body: {
         name:,
         url:,
-        domain:
-      },
+        referrer:,
+        props:,
+        domain: DOMAIN
+      }.reject { |_, v| v.nil? },
       headers: headers.reverse_merge("Content-Type" => "application/json")
     )
   end

app/controllers/settings/color_schemes_controller.rb

@@ -1,4 +1,6 @@
 class Settings::ColorSchemesController < ApplicationController
+  after_action :send_plausible_event, only: :update
+
   def show
     @color_scheme = find_color_scheme
 
@@ -32,4 +34,23 @@ def update
 
     redirect_to settings_color_scheme_path, status: :see_other
   end
+
+  private
+
+  def send_plausible_event
+    plausible_event "Color Scheme Update", props: {color_scheme: @color_scheme.name}
+  end
+
+  def plausible_event(name, props: {})
+    Analytics::PlausibleEventJob.perform_later(
+      name: name,
+      url: request.original_url,
+      props: props,
+      referrer: request.referer,
+      headers: {
+        "User-Agent" => request.user_agent,
+        "X-Forwarded-For" => request.remote_ip
+      }
+    )
+  end
 end

app/jobs/analytics/plausible_event_job.rb

@@ -0,0 +1,11 @@
+class Analytics::PlausibleEventJob < ApplicationJob
+  def perform(name:, url:, referrer: nil, props: nil, headers: {})
+    result = PlausibleClient.new.post_event(name:, url:, referrer:, props:, headers: headers)
+
+    if result.code.to_i >= 300
+      Rails.logger.warn("[#{self.class}] Plausible event unexpected response: #{result.code} #{result.body}")
+    else
+      Rails.logger.info("[#{self.class}] Plausible event posted: #{result.code} #{result.body}")
+    end
+  end
+end

spec/requests/settings/color_schemes_spec.rb

@@ -106,5 +106,15 @@
         expect(response.body).to match(default_color_scheme.name.parameterize)
       end
     end
+
+    it "sends a plausible event" do
+      plausible_request = stub_request(:post, "https://plausible.io/api/event")
+
+      patch settings_color_scheme_path(settings: {color_scheme_id: color_scheme.id})
+
+      perform_enqueued_jobs
+
+      expect(plausible_request).to have_been_requested
+    end
   end
 end