GraphQL mutations for add, remove and toggle emoji62826-graphql-emoji-mutations

Adding new `AddAwardEmoji`, `RemoveAwardEmoji` and `ToggleAwardEmoji`
GraphQL mutations.

Adding new `#authorized_find_with_pre_checks!` and (unused, but for
completeness `#authorized_find_with_post_checks!`) authorization
methods. These allow us to perform an authorized find, and run our own
additional checks before or after the authorization runs.

https://gitlab.com/gitlab-org/gitlab-ce/issues/62826

1 files changed, 33 insertions, 0 deletions

diff --git a/app/graphql/mutations/award_emojis/remove.rb b/app/graphql/mutations/award_emojis/remove.rb
new file mode 100644
index 00000000000..3ba85e445b8
--- /dev/null
+++ b/app/graphql/mutations/award_emojis/remove.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Mutations
+  module AwardEmojis
+    class Remove < Base
+      graphql_name 'RemoveAwardEmoji'
+
+      def resolve(args)
+        awardable = authorized_find!(id: args[:awardable_id])
+
+        check_object_is_awardable!(awardable)
+
+        # TODO this check can be removed once AwardEmoji services are available.
+        # See https://gitlab.com/gitlab-org/gitlab-ce/issues/63372 and
+        # https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/29782
+        unless awardable.awarded_emoji?(args[:name], current_user)
+          raise Gitlab::Graphql::Errors::ResourceNotAvailable,
+                'You have not awarded emoji of type name to the awardable'
+        end
+
+        # TODO this will be handled by AwardEmoji::DestroyService
+        # See https://gitlab.com/gitlab-org/gitlab-ce/issues/63372 and
+        # https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/29782
+        awardable.remove_award_emoji(args[:name], current_user)
+
+        {
+          # Mutation response is always a `nil` award_emoji
+          errors: []
+        }
+      end
+    end
+  end
+end