1 files changed, 39 insertions, 0 deletions
diff --git a/app/graphql/mutations/todos/create.rb b/app/graphql/mutations/todos/create.rb
new file mode 100644
index 00000000000..53c88696fdd
--- /dev/null
+++ b/app/graphql/mutations/todos/create.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+module Mutations
+  module Todos
+    class Create < ::Mutations::Todos::Base
+      graphql_name 'TodoCreate'
+
+      authorize :create_todo
+
+      argument :target_id,
+               Types::GlobalIDType[Todoable],
+               required: true,
+               description: "The global ID of the to-do item's parent. Issues, merge requests, designs and epics are supported"
+
+      field :todo, Types::TodoType,
+            null: true,
+            description: 'The to-do created'
+
+      def resolve(target_id:)
+        id = ::Types::GlobalIDType[Todoable].coerce_isolated_input(target_id)
+        target = authorized_find!(id)
+
+        todo = TodoService.new.mark_todo(target, current_user)&.first
+        errors = errors_on_object(todo) if todo
+
+        {
+          todo: todo,
+          errors: errors
+        }
+      end
+
+      private
+
+      def find_object(id)
+        GitlabSchema.find_by_gid(id)
+      end
+    end
+  end
+end