# frozen_string_literal: true

module API
  module Metrics
    module Dashboard
      class Annotations < Grape::API::Instance
        desc 'Create a new monitoring dashboard annotation' do
          success Entities::Metrics::Dashboard::Annotation
        end

        ANNOTATIONS_SOURCES = [
          { class: ::Environment, resource: :environments, create_service_param_key: :environment },
          { class: Clusters::Cluster, resource: :clusters, create_service_param_key: :cluster }
        ].freeze

        ANNOTATIONS_SOURCES.each do |annotations_source|
          resource annotations_source[:resource] do
            params do
              requires :starting_at, type: DateTime,
                      desc: 'Date time indicating starting moment to which the annotation relates.'
              optional :ending_at, type: DateTime,
                      desc: 'Date time indicating ending moment to which the annotation relates.'
              requires :dashboard_path, type: String, coerce_with: -> (val) { CGI.unescape(val) },
                      desc: 'The path to a file defining the dashboard on which the annotation should be added'
              requires :description, type: String, desc: 'The description of the annotation'
            end

            post ':id/metrics_dashboard/annotations' do
              annotations_source_object = annotations_source[:class].find(params[:id])

              forbidden! unless can?(current_user, :create_metrics_dashboard_annotation, annotations_source_object)

              create_service_params = declared(params).merge(annotations_source[:create_service_param_key] => annotations_source_object)

              result = ::Metrics::Dashboard::Annotations::CreateService.new(current_user, create_service_params).execute

              if result[:status] == :success
                present result[:annotation], with: Entities::Metrics::Dashboard::Annotation
              else
                error!(result, 400)
              end
            end
          end
        end
      end
    end
  end
end
