Add peer progress API endpoint

app/controllers/peer_progress_controller.rb

@@ -0,0 +1,33 @@
+class PeerProgressController < ApplicationController
+  def show
+    student_id = params[:student_id].to_i
+    unit_id = params[:unit_id].to_i
+
+    project = Project.find_by(user_id: student_id, unit_id: unit_id)
+
+    return render json: { error: "Project not found" }, status: :not_found unless project
+
+    target_grade = project.target_grade
+
+    required_tasks = project.unit.tasks.where(project_id: project.id).select do |task|
+      task.task_definition.present? &&
+        task.task_definition.target_grade.present? &&
+        task.task_definition.target_grade <= target_grade
+    end
+
+    tasks_required = required_tasks.count
+    tasks_completed = required_tasks.select(&:complete?).count
+
+    progress_percentage =
+      tasks_required.positive? ? ((tasks_completed.to_f / tasks_required) * 100).round : 0
+
+    render json: {
+      student_id: student_id,
+      unit_id: unit_id,
+      target_grade: project.target_grade_desc,
+      tasks_completed: tasks_completed,
+      tasks_required: tasks_required,
+      progress_percentage: progress_percentage
+    }
+  end
+end

config/routes.rb

@@ -5,6 +5,7 @@
   get 'api/submission/unit/:id/task_definitions/:task_def_id/download_submissions', to: 'task_downloads#index'
   get 'api/submission/unit/:id/task_definitions/:task_def_id/student_pdfs', to: 'task_submission_pdfs#index'
   get 'api/units/:id/all_resources', to: 'lecture_resource_downloads#index'
+  get 'api/peer_progress/:unit_id/:student_id', to: 'peer_progress#show'
 
   mount ApiRoot => '/'
   mount GrapeSwaggerRails::Engine => '/api/docs'