feat: Implement getData query and send a message action for slack

packages/backend/src/graphql/queries/get-data.ts

@@ -0,0 +1,31 @@
+import App from '../../models/app';
+import Connection from '../../models/connection';
+import Step from '../../models/step';
+import { IApp } from '@automatisch/types';
+import Context from '../../types/express/context';
+import ListData from '../../apps/slack/data/list-channels';
+
+type Params = {
+  stepId: string;
+  key: string;
+};
+
+const getData = async (_parent: unknown, params: Params, context: Context) => {
+  const step = await context.currentUser
+    .$relatedQuery('steps')
+    .withGraphFetched('connection')
+    .findById(params.stepId);
+
+  const connection = step.connection;
+
+  const appData = App.findOneByKey(step.appKey);
+  const AppClass = (await import(`../../apps/${step.appKey}`)).default;
+
+  const appInstance = new AppClass(appData, connection.formattedData);
+  const command = appInstance.data[params.key];
+  const fetchedData = await command.run();
+
+  return fetchedData;
+};
+
+export default getData;