1 files changed, 55 insertions, 0 deletions
diff --git a/app/services/tasks_to_be_done/base_service.rb b/app/services/tasks_to_be_done/base_service.rb
new file mode 100644
index 00000000000..a5648ad10c4
--- /dev/null
+++ b/app/services/tasks_to_be_done/base_service.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+module TasksToBeDone
+  class BaseService < ::IssuableBaseService
+    LABEL_PREFIX = 'tasks to be done'
+
+    def initialize(project:, current_user:, assignee_ids: [])
+      params = {
+        assignee_ids: assignee_ids,
+        title: title,
+        description: description,
+        add_labels: label_name
+      }
+      super(project: project, current_user: current_user, params: params)
+    end
+
+    def execute
+      if (issue = existing_task_issue)
+        update_service = Issues::UpdateService.new(project: project, current_user: current_user, params: { add_assignee_ids: params[:assignee_ids] })
+        update_service.execute(issue)
+      else
+        build_service = Issues::BuildService.new(project: project, current_user: current_user, params: params)
+        create(build_service.execute)
+      end
+    end
+
+    private
+
+    def existing_task_issue
+      IssuesFinder.new(
+        current_user,
+        project_id: project.id,
+        state: 'opened',
+        non_archived: true,
+        label_name: label_name
+      ).execute.last
+    end
+
+    def title
+      raise NotImplementedError
+    end
+
+    def description
+      raise NotImplementedError
+    end
+
+    def label_suffix
+      raise NotImplementedError
+    end
+
+    def label_name
+      "#{LABEL_PREFIX}:#{label_suffix}"
+    end
+  end
+end