Add builds API (listing, showing trace)

lib/api/api.rb

@@ -54,5 +54,7 @@ module API
     mount Keys
     mount Tags
     mount Triggers
+
+    mount Builds
   end
 end

lib/api/builds.rb

+module API
+  # Projects builds API
+  class Builds < Grape::API
+    before { authenticate! }
+
+    resource :projects do
+      # Get a project repository commits
+      #
+      # Parameters:
+      #   id (required) - The ID of a project
+      #   scope (optional) - The scope of builds to show (one of: all, finished, running)
+      #   page (optional) - The page number for pagination (default: 1)
+      #   per_page (ooptional) - The value of items per page to show (default 30)
+      # Example Request:
+      #   GET /projects/:id/builds/all
+      get ':id/builds' do
+        all_builds = user_project.builds
+        builds = all_builds.order('created_at DESC')
+        builds =
+          case params[:scope]
+          when 'all'
+            builds
+          when 'finished'
+            builds.finished
+          when 'running'
+            builds.running
+          when 'pending'
+            builds.pending
+          when 'success'
+            builds.success
+          when 'failed'
+            builds.failed
+          else
+            builds.running_or_pending.reverse_order
+          end
+
+        page = (params[:page] || 1).to_i
+        per_page = (params[:per_page] || 30).to_i
+
+        present builds.page(page).per(per_page), with: Entities::Build
+      end
+
+      # Get a specific build of a project
+      #
+      # Parameters:
+      #   id (required) - The ID of a project
+      #   build_id (required) - The ID of a build
+      # Example Request:
+      #   GET /projects/:id/builds/:build_id
+      get ':id/builds/:build_id' do
+        present get_build(params[:build_id]), with: Entities::Build
+      end
+
+      # Get a trace of a specific build of a project
+      #
+      # Parameters:
+      #   id (required) - The ID of a project
+      #   build_id (required) - The ID of a build
+      # Example Request:
+      #   GET /projects/:id/build/:build_id/trace
+      get ':id/builds/:build_id/trace' do
+        trace = get_build(params[:build_id]).trace
+        trace =
+          unless trace.nil?
+            trace.split("\n")
+          else
+            []
+          end
+
+        present trace
+      end
+    end
+
+    helpers do
+      def get_build(id)
+        user_project.builds.where(id: id).first
+      end
+    end
+  end
+end

lib/api/entities.rb

@@ -366,5 +366,18 @@ module API
     class TriggerRequest < Grape::Entity
       expose :id, :variables
     end
+
+    class Build < Grape::Entity
+      expose :id
+      expose :status
+      expose :stage
+      expose :name
+      expose :ref
+      expose :commit
+      expose :runner
+      expose :created_at
+      expose :started_at
+      expose :finished_at
+    end
   end
 end