feat: Introduce my tweet trigger with execute step mutation

packages/backend/src/graphql/mutations/execute-step.ts

@@ -0,0 +1,36 @@
+import { GraphQLString, GraphQLNonNull } from 'graphql';
+import App from '../../models/app';
+import Connection from '../../models/connection';
+import Step from '../../models/step';
+import stepType from '../types/step';
+import RequestWithCurrentUser from '../../types/express/request-with-current-user';
+
+type Params = {
+  id: string,
+  data: object
+}
+const executeStepResolver = async (params: Params, req: RequestWithCurrentUser) => {
+  let step = await Step.query().findOne({
+    id: params.id
+  })
+
+  let connection = await Connection.query().findOne({
+    id: step.connectionId
+  })
+
+  const appClass = (await import(`../../apps/${step.appKey}`)).default;
+  const appInstance = new appClass(connection.data);
+  await appInstance.triggers[step.key].run();
+
+  return step;
+}
+
+const executeStep = {
+  type: stepType,
+  args: {
+    id: { type: GraphQLNonNull(GraphQLString) }
+  },
+  resolve: (_: any, params: Params, req: RequestWithCurrentUser) => executeStepResolver(params, req)
+};
+
+export default executeStep;