# frozen_string_literal: true

module Gitlab
  module Graphql
    module MarkdownField
      extend ActiveSupport::Concern

      prepended do
        def self.markdown_field(name, **kwargs)
          if kwargs[:resolver].present? || kwargs[:resolve].present?
            raise ArgumentError, 'Only `method` is allowed to specify the markdown field'
          end

          method_name = kwargs.delete(:method) || name.to_s.sub(/_html$/, '')
          resolver_method = "#{name}_resolver".to_sym
          kwargs[:resolver_method] = resolver_method

          kwargs[:description] ||= "GitLab Flavored Markdown rendering of `#{method_name}`"
          # Adding complexity to rendered notes since that could cause queries.
          kwargs[:complexity] ||= 5

          field name, GraphQL::Types::String, **kwargs

          define_method resolver_method do
            markdown_object = block_given? ? yield(object) : object

            # We need to `dup` the context so the MarkdownHelper doesn't modify it
            ::MarkupHelper.markdown_field(markdown_object, method_name.to_sym, context.to_h.dup)
          end
        end
      end
    end
  end
end