1 files changed, 33 insertions, 0 deletions

diff --git a/app/graphql/mutations/issues/unlink_alert.rb b/app/graphql/mutations/issues/unlink_alert.rb
new file mode 100644
index 00000000000..a11af4133cf
--- /dev/null
+++ b/app/graphql/mutations/issues/unlink_alert.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Mutations
+  module Issues
+    class UnlinkAlert < Base
+      graphql_name 'IssueUnlinkAlert'
+
+      argument :alert_id, ::Types::GlobalIDType[::AlertManagement::Alert],
+        required: true,
+        description: 'Global ID of the alert to unlink from the incident.'
+
+      authorize :admin_issue
+
+      def resolve(project_path:, iid:, alert_id:)
+        issue = authorized_find!(project_path: project_path, iid: iid)
+        alert = find_alert_by_gid(alert_id)
+
+        result = ::IncidentManagement::LinkAlerts::DestroyService.new(issue, current_user, alert).execute
+
+        {
+          issue: issue,
+          errors: result.errors
+        }
+      end
+
+      private
+
+      def find_alert_by_gid(alert_id)
+        ::Gitlab::Graphql::Lazy.force(GitlabSchema.object_from_id(alert_id, expected_type: ::AlertManagement::Alert))
+      end
+    end
+  end
+end