first commit

calcom/packages/app-store/mock-payment-app/api/add.ts

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+import { createDefaultInstallation } from "@calcom/app-store/_utils/installation";
+import type { AppDeclarativeHandler } from "@calcom/types/AppHandler";
+
+import appConfig from "../config.json";
+
+const handler: AppDeclarativeHandler = {
+  appType: appConfig.type,
+  variant: appConfig.variant,
+  slug: appConfig.slug,
+  supportsMultipleInstalls: false,
+  handlerType: "add",
+  createCredential: ({ appType, user, slug, teamId }) =>
+    createDefaultInstallation({ appType, user: user, slug, key: {}, teamId }),
+};
+
+export default handler;

calcom/packages/app-store/mock-payment-app/api/index.ts

@@ -0,0 +1 @@
+export { default as add } from "./add";