# frozen_string_literal: true

module Resolvers
  class UserMergeRequestsResolverBase < MergeRequestsResolver
    include ResolvesProject

    argument :project_path,
             type: GraphQL::Types::String,
             required: false,
             description: <<~DESC
               The full-path of the project the authored merge requests should be in.
               Incompatible with projectId.
             DESC

    argument :project_id,
             type: ::Types::GlobalIDType[::Project],
             required: false,
             description: <<~DESC
               The global ID of the project the authored merge requests should be in.
               Incompatible with projectPath.
             DESC

    attr_reader :project
    alias_method :user, :object

    def ready?(project_id: nil, project_path: nil, **args)
      return early_return unless can_read_profile?

      if project_id || project_path
        load_project(project_path, project_id)
        return early_return unless can_read_project?
      elsif args[:iids].present?
        raise ::Gitlab::Graphql::Errors::ArgumentError, 'iids requires projectPath or projectId'
      end

      super(**args)
    end

    def resolve(**args)
      prepare_args(args)
      key = :"#{user_role}_id"
      super(key => user.id, **args)
    end

    def user_role
      raise NotImplementedError
    end

    private

    def can_read_profile?
      Ability.allowed?(current_user, :read_user_profile, user)
    end

    def can_read_project?
      Ability.allowed?(current_user, :read_merge_request, project)
    end

    def load_project(project_path, project_id)
      # TODO: remove this line when the compatibility layer is removed
      # See: https://gitlab.com/gitlab-org/gitlab/-/issues/257883
      project_id &&= ::Types::GlobalIDType[::Project].coerce_isolated_input(project_id)
      @project = ::Gitlab::Graphql::Lazy.force(resolve_project(full_path: project_path, project_id: project_id))
    end

    def no_results_possible?(args)
      some_argument_is_empty?(args)
    end

    # These arguments are handled in load_project, and should not be passed to
    # the finder directly.
    def prepare_args(args)
      args.delete(:project_id)
      args.delete(:project_path)
    end
  end
end
