first commit

calcom/apps/web/app/WithEmbedSSR.tsx

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+import type { GetServerSidePropsContext } from "next";
+import { isNotFoundError } from "next/dist/client/components/not-found";
+import { getURLFromRedirectError, isRedirectError } from "next/dist/client/components/redirect";
+import { notFound, redirect } from "next/navigation";
+
+import { WebAppURL } from "@calcom/lib/WebAppURL";
+
+export type EmbedProps = {
+  isEmbed?: boolean;
+};
+
+export default function withEmbedSsrAppDir<T extends Record<string, any>>(
+  getData: (context: GetServerSidePropsContext) => Promise<T>
+) {
+  return async (context: GetServerSidePropsContext): Promise<T> => {
+    const { embed, layout } = context.query;
+
+    try {
+      const props = await getData(context);
+
+      return {
+        ...props,
+        isEmbed: true,
+      };
+    } catch (e) {
+      if (isRedirectError(e)) {
+        const destinationUrl = getURLFromRedirectError(e);
+        let urlPrefix = "";
+
+        // Get the URL parsed from URL so that we can reliably read pathname and searchParams from it.
+        const destinationUrlObj = new WebAppURL(destinationUrl);
+
+        // If it's a complete URL, use the origin as the prefix to ensure we redirect to the same domain.
+        if (destinationUrl.search(/^(http:|https:).*/) !== -1) {
+          urlPrefix = destinationUrlObj.origin;
+        } else {
+          // Don't use any prefix for relative URLs to ensure we stay on the same domain
+          urlPrefix = "";
+        }
+
+        const destinationQueryStr = destinationUrlObj.searchParams.toString();
+        // Make sure that redirect happens to /embed page and pass on embed query param as is for preserving Cal JS API namespace
+        const newDestinationUrl = `${urlPrefix}${destinationUrlObj.pathname}/embed?${
+          destinationQueryStr ? `${destinationQueryStr}&` : ""
+        }layout=${layout}&embed=${embed}`;
+
+        redirect(newDestinationUrl);
+      }
+
+      if (isNotFoundError(e)) {
+        notFound();
+      }
+
+      throw e;
+    }
+  };
+}