module API
  # Git Tags API
  class Tags < Grape::API
    before { authorize! :download_code, user_project }

    params do
      requires :id, type: String, desc: 'The ID of a project'
    end
    resource :projects do
      desc 'Get a project repository tags' do
        success Entities::RepoTag
      end
      get ":id/repository/tags" do
        present user_project.repository.tags.sort_by(&:name).reverse,
                with: Entities::RepoTag, project: user_project
      end

      desc 'Get a single repository tag' do
        success Entities::RepoTag
      end
      params do
        requires :tag_name, type: String, desc: 'The name of the tag'
      end
      get ":id/repository/tags/:tag_name", requirements: { tag_name: /.+/ } do
        tag = user_project.repository.find_tag(params[:tag_name])
        not_found!('Tag') unless tag

        present tag, with: Entities::RepoTag, project: user_project
      end

      desc 'Create a new repository tag' do
        success Entities::RepoTag
      end
      params do
        requires :tag_name,            type: String, desc: 'The name of the tag'
        requires :ref,                 type: String, desc: 'The commit sha or branch name'
        optional :message,             type: String, desc: 'Specifying a message creates an annotated tag'
        optional :release_description, type: String, desc: 'Specifying release notes stored in the GitLab database'
      end
      post ':id/repository/tags' do
        authorize_push_project

        result = CreateTagService.new(user_project, current_user).
          execute(params[:tag_name], params[:ref], params[:message], params[:release_description])

        if result[:status] == :success
          present result[:tag],
                  with: Entities::RepoTag,
                  project: user_project
        else
          render_api_error!(result[:message], 400)
        end
      end

      desc 'Delete a repository tag'
      params do
        requires :tag_name, type: String, desc: 'The name of the tag'
      end
      delete ":id/repository/tags/:tag_name", requirements: { tag_name: /.+/ } do
        authorize_push_project

        result = DeleteTagService.new(user_project, current_user).
          execute(params[:tag_name])

        if result[:status] == :success
          {
            tag_name: params[:tag_name]
          }
        else
          render_api_error!(result[:message], result[:return_code])
        end
      end

      desc 'Add a release note to a tag' do
        success Entities::Release
      end
      params do
        requires :tag_name,    type: String, desc: 'The name of the tag'
        requires :description, type: String, desc: 'Release notes with markdown support'
      end
      post ':id/repository/tags/:tag_name/release', requirements: { tag_name: /.+/ } do
        authorize_push_project

        result = CreateReleaseService.new(user_project, current_user).
          execute(params[:tag_name], params[:description])

        if result[:status] == :success
          present result[:release], with: Entities::Release
        else
          render_api_error!(result[:message], result[:http_status])
        end
      end

      desc "Update a tag's release note" do
        success Entities::Release
      end
      params do
        requires :tag_name,    type: String, desc: 'The name of the tag'
        requires :description, type: String, desc: 'Release notes with markdown support'
      end
      put ':id/repository/tags/:tag_name/release', requirements: { tag_name: /.+/ } do
        authorize_push_project

        result = UpdateReleaseService.new(user_project, current_user).
          execute(params[:tag_name], params[:description])

        if result[:status] == :success
          present result[:release], with: Entities::Release
        else
          render_api_error!(result[:message], result[:http_status])
        end
      end
    end
  end
end
