Add endpoint for solution image generator (#5747)

* Add endpoint for solution image generator

* Allow access from docker

---------

Co-authored-by: Erik Schierboom <[email protected]>

app/controllers/spi/solution_image_data_controller.rb

@@ -0,0 +1,26 @@
+module SPI
+  class SolutionImageDataController < BaseController
+    def show
+      solution = Solution.for!(
+        params[:user_handle],
+        params[:track_slug],
+        params[:exercise_slug]
+      )
+
+      exercise = solution.exercise
+      track = exercise.track
+      file = solution.latest_published_iteration_submission.files.first
+      snippet = solution.snippet.presence || file.content[0, 10]
+      render json: {
+        solution: {
+          snippet:,
+          extension: File.extname(file.filename),
+          language: track.highlightjs_language,
+          track_icon_url: track.icon_url,
+          exercise_icon_url: exercise.icon_url,
+          user_avatar_url: solution.user.avatar_url
+        }
+      }
+    end
+  end
+end

config/environments/development.rb

@@ -87,6 +87,7 @@
   config.hosts << "website" if ENV['EXERCISM_DOCKER']
   config.hosts << /.*.ngrok.io/
   config.hosts << /.*.ngrok-free.app/
+  config.hosts << "host.docker.internal"
 end
 
 Rails.application.routes.default_url_options = {

config/routes/spi.rb

@@ -4,4 +4,5 @@
 namespace :spi do
   resources :tooling_jobs, only: :update
   resources :chatgpt_responses, only: :create
+  get "solution_image_data/:track_slug/:exercise_slug/:user_handle" => "solution_image_data#show"
 end