add project snippets API

lib/api/entities.rb

@@ -19,5 +19,11 @@ module Gitlab
     class ProjectRepositoryTags < Grape::Entity
       expose :name, :commit
     end
+
+    class ProjectSnippet < Grape::Entity
+      expose :id, :title, :file_name
+      expose :author, :using => Entities::User
+      expose :expires_at, :updated_at, :created_at
+    end
   end
 end

lib/api/projects.rb

@@ -45,6 +45,59 @@ module Gitlab
         @project = current_user.projects.find_by_code(params[:id])
         present @project.repo.tags.sort_by(&:name).reverse, :with => Entities::ProjectRepositoryTags
       end
+
+      # Get a project snippet
+      #
+      # Parameters:
+      #   id (required) - The code of a project
+      #   snippet_id (required) - The ID of a project snippet
+      # Example Request:
+      #   GET /projects/:id/snippets/:snippet_id
+      get ":id/snippets/:snippet_id" do
+        @project = current_user.projects.find_by_code(params[:id])
+        @snippet = @project.snippets.find(params[:snippet_id])
+        present @snippet, :with => Entities::ProjectSnippet
+      end
+
+      # Create a new project snippet
+      #
+      # Parameters:
+      #   id (required) - The code name of a project
+      #   title (required) - The title of a snippet
+      #   file_name (required) - The name of a snippet file
+      #   lifetime (optional) - The expiration date of a snippet
+      #   code (required) - The content of a snippet
+      # Example Request:
+      #   POST /projects/:id/snippets
+      post ":id/snippets" do
+        @project = current_user.projects.find_by_code(params[:id])
+        @snippet = @project.snippets.new(
+          :title      => params[:title],
+          :file_name  => params[:file_name],
+          :expires_at => params[:lifetime],
+          :content    => params[:code]
+        )
+        @snippet.author = current_user
+
+        if @snippet.save
+          present @snippet, :with => Entities::ProjectSnippet
+        else
+          error!({'message' => '404 Not found'}, 404)
+        end
+      end
+
+      # Delete a project snippet
+      #
+      # Parameters:
+      #   id (required) - The code of a project
+      #   snippet_id (required) - The ID of a project snippet
+      # Example Request:
+      #   DELETE /projects/:id/snippets/:snippet_id
+      delete ":id/snippets/:snippet_id" do
+        @project = current_user.projects.find_by_code(params[:id])
+        @snippet = @project.snippets.find(params[:snippet_id])
+        @snippet.destroy
+      end
     end
   end
 end