first commit

calcom/apps/web/lib/buildLegacyCtx.tsx

@@ -0,0 +1,49 @@
+import type { SearchParams } from "app/_types";
+import { type Params } from "app/_types";
+import type { GetServerSidePropsContext } from "next";
+import { type ReadonlyHeaders } from "next/dist/server/web/spec-extension/adapters/headers";
+import { type ReadonlyRequestCookies } from "next/dist/server/web/spec-extension/adapters/request-cookies";
+
+const createProxifiedObject = (object: Record<string, string>) =>
+  new Proxy(object, {
+    set: () => {
+      throw new Error("You are trying to modify 'headers' or 'cookies', which is not supported in app dir");
+    },
+  });
+
+const buildLegacyHeaders = (headers: ReadonlyHeaders) => {
+  const headersObject = Object.fromEntries(headers.entries());
+
+  return createProxifiedObject(headersObject);
+};
+
+const buildLegacyCookies = (cookies: ReadonlyRequestCookies) => {
+  const cookiesObject = cookies.getAll().reduce<Record<string, string>>((acc, { name, value }) => {
+    acc[name] = value;
+    return acc;
+  }, {});
+
+  return createProxifiedObject(cookiesObject);
+};
+
+export const buildLegacyCtx = (
+  headers: ReadonlyHeaders,
+  cookies: ReadonlyRequestCookies,
+  params: Params,
+  searchParams: SearchParams
+) => {
+  return {
+    query: { ...searchParams, ...params },
+    params,
+    req: { headers: buildLegacyHeaders(headers), cookies: buildLegacyCookies(cookies) },
+    res: new Proxy(Object.create(null), {
+      // const { req, res } = ctx - valid
+      // res.anything - throw
+      get() {
+        throw new Error(
+          "You are trying to access the 'res' property of the context, which is not supported in app dir"
+        );
+      },
+    }),
+  } as unknown as GetServerSidePropsContext;
+};