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module API
  # Internal access API
  class Internal < Grape::API
    before { authenticate_by_gitlab_shell_token! }

    namespace 'internal' do
      # Check if git command is allowed to project
      #
      # Params:
      #   key_id - ssh key id for Git over SSH
      #   user_id - user id for Git over HTTP
      #   project - project path with namespace
      #   action - git action (git-upload-pack or git-receive-pack)
      #   ref - branch name
      #   forced_push - forced_push
      #

      helpers do
        def wiki?
          @wiki ||= params[:project].end_with?('.wiki') &&
            !Project.find_with_namespace(params[:project])
        end
      end

      post "/allowed" do
        status 200

        actor =
          if params[:key_id]
            Key.find_by(id: params[:key_id])
          elsif params[:user_id]
            User.find_by(id: params[:user_id])
          end

        project_path = params[:project]

        # Check for *.wiki repositories.
        # Strip out the .wiki from the pathname before finding the
        # project. This applies the correct project permissions to
        # the wiki repository as well.
        project_path.chomp!('.wiki') if wiki?

        project = Project.find_with_namespace(project_path)

        access =
          if wiki?
            Gitlab::GitAccessWiki.new(actor, project)
          else
            Gitlab::GitAccess.new(actor, project)
          end

        access.check(params[:action], params[:changes])
      end

      #
      # Discover user by ssh key
      #
      get "/discover" do
        key = Key.find(params[:key_id])
        present key.user, with: Entities::UserSafe
      end

      get "/check" do
        {
          api_version: API.version,
          gitlab_version: Gitlab::VERSION,
          gitlab_rev: Gitlab::REVISION,
        }
      end

      get "/broadcast_message" do
        if message = BroadcastMessage.current
          present message, with: Entities::BroadcastMessage
        else
          {}
        end
      end
    end
  end
end