# frozen_string_literal: true

module API
  class Pipelines < Grape::API
    include PaginationParams

    before { authenticate! }

    params do
      requires :id, type: String, desc: "The project ID"
    end
    resource :projects, requirements: API::NAMESPACE_OR_PROJECT_REQUIREMENTS do
      desc "Get all Pipelines of the project" do
        detail "This feature was introduced in GitLab 8.11."
        success Entities::PipelineBasic
      end
      params do
        use :pagination
        optional :scope,    type: String, values: %w[running pending finished branches tags],
                            desc: "The scope of pipelines"
        optional :status,   type: String, values: HasStatus::AVAILABLE_STATUSES,
                            desc: "The status of pipelines"
        optional :ref,      type: String, desc: "The ref of pipelines"
        optional :sha,      type: String, desc: "The sha of pipelines"
        optional :yaml_errors, type: Boolean, desc: "Returns pipelines with invalid configurations"
        optional :name,     type: String, desc: "The name of the user who triggered pipelines"
        optional :username, type: String, desc: "The username of the user who triggered pipelines"
        optional :order_by, type: String, values: PipelinesFinder::ALLOWED_INDEXED_COLUMNS, default: "id",
                            desc: "Order pipelines"
        optional :sort,     type: String, values: %w[asc desc], default: "desc",
                            desc: "Sort pipelines"
      end
      get ":id/pipelines" do
        authorize! :read_pipeline, user_project

        pipelines = PipelinesFinder.new(user_project, current_user, params).execute
        present paginate(pipelines), with: Entities::PipelineBasic
      end

      desc "Create a new pipeline" do
        detail "This feature was introduced in GitLab 8.14"
        success Entities::Pipeline
      end
      params do
        requires :ref, type: String, desc: "Reference"
        optional :variables, Array, desc: "Array of variables available in the pipeline"
      end
      # rubocop: disable CodeReuse/ActiveRecord
      post ":id/pipeline" do
        Gitlab::QueryLimiting.whitelist("https://gitlab.com/gitlab-org/gitlab-ce/issues/42124")

        authorize! :create_pipeline, user_project

        pipeline_params = declared_params(include_missing: false)
          .merge(variables_attributes: params[:variables])
          .except(:variables)

        new_pipeline = Ci::CreatePipelineService.new(user_project,
          current_user,
          pipeline_params)
          .execute(:api, ignore_skip_ci: true, save_on_errors: false)

        if new_pipeline.persisted?
          present new_pipeline, with: Entities::Pipeline
        else
          render_validation_error!(new_pipeline)
        end
      end
      # rubocop: enable CodeReuse/ActiveRecord

      desc "Gets a specific pipeline for the project" do
        detail "This feature was introduced in GitLab 8.11"
        success Entities::Pipeline
      end
      params do
        requires :pipeline_id, type: Integer, desc: "The pipeline ID"
      end
      get ":id/pipelines/:pipeline_id" do
        authorize! :read_pipeline, pipeline

        present pipeline, with: Entities::Pipeline
      end

      desc "Deletes a pipeline" do
        detail "This feature was introduced in GitLab 11.6"
        http_codes [[204, "Pipeline was deleted"], [403, "Forbidden"]]
      end
      params do
        requires :pipeline_id, type: Integer, desc: "The pipeline ID"
      end
      delete ":id/pipelines/:pipeline_id" do
        authorize! :destroy_pipeline, pipeline

        destroy_conditionally!(pipeline) do
          ::Ci::DestroyPipelineService.new(user_project, current_user).execute(pipeline)
        end
      end

      desc "Retry builds in the pipeline" do
        detail "This feature was introduced in GitLab 8.11."
        success Entities::Pipeline
      end
      params do
        requires :pipeline_id, type: Integer, desc: "The pipeline ID"
      end
      post ":id/pipelines/:pipeline_id/retry" do
        authorize! :update_pipeline, pipeline

        pipeline.retry_failed(current_user)

        present pipeline, with: Entities::Pipeline
      end

      desc "Cancel all builds in the pipeline" do
        detail "This feature was introduced in GitLab 8.11."
        success Entities::Pipeline
      end
      params do
        requires :pipeline_id, type: Integer, desc: "The pipeline ID"
      end
      post ":id/pipelines/:pipeline_id/cancel" do
        authorize! :update_pipeline, pipeline

        pipeline.cancel_running

        status 200
        present pipeline.reload, with: Entities::Pipeline
      end
    end

    helpers do
      def pipeline
        @pipeline ||= user_project.ci_pipelines.find(params[:pipeline_id])
      end
    end
  end
end