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calcom/packages/lib/getPaymentAppData.ts

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+import type { z } from "zod";
+
+import { getEventTypeAppData } from "@calcom/app-store/_utils/getEventTypeAppData";
+import type { appDataSchemas } from "@calcom/app-store/apps.schemas.generated";
+import type { appDataSchema, paymentOptionEnum } from "@calcom/app-store/stripepayment/zod";
+import type { EventTypeAppsList } from "@calcom/app-store/utils";
+import type { BookerEvent } from "@calcom/features/bookings/types";
+
+export default function getPaymentAppData(
+  eventType: Pick<BookerEvent, "price" | "currency" | "metadata">,
+  forcedGet?: boolean
+) {
+  const metadataApps = eventType?.metadata?.apps as unknown as EventTypeAppsList;
+  if (!metadataApps) {
+    return { enabled: false, price: 0, currency: "usd", appId: null };
+  }
+  type appId = keyof typeof metadataApps;
+  // @TODO: a lot of unknowns types here can be improved later
+  const paymentAppIds = (Object.keys(metadataApps) as Array<keyof typeof appDataSchemas>).filter(
+    (app) =>
+      (metadataApps[app as appId] as unknown as z.infer<typeof appDataSchema>)?.price &&
+      (metadataApps[app as appId] as unknown as z.infer<typeof appDataSchema>)?.enabled
+  );
+
+  // Event type should only have one payment app data
+  let paymentAppData: {
+    enabled: boolean;
+    price: number;
+    currency: string;
+    appId: EventTypeAppsList | null;
+    paymentOption: typeof paymentOptionEnum;
+    credentialId?: number;
+  } | null = null;
+  for (const appId of paymentAppIds) {
+    const appData = getEventTypeAppData(eventType, appId, forcedGet);
+    if (appData && paymentAppData === null) {
+      paymentAppData = {
+        ...appData,
+        appId,
+      };
+    }
+  }
+  // This is the current expectation of system to have price and currency set always(using DB Level defaults).
+  // Newly added apps code should assume that their app data might not be set.
+  return (
+    paymentAppData || {
+      enabled: false,
+      price: 0,
+      currency: "usd",
+      appId: null,
+      paymentOption: "ON_BOOKING",
+      credentialId: undefined,
+    }
+  );
+}
+
+export type PaymentAppData = ReturnType<typeof getPaymentAppData>;