69 lines
2.0 KiB
TypeScript
69 lines
2.0 KiB
TypeScript
import { getBucket } from "abTest/utils";
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import type { NextMiddleware, NextRequest } from "next/server";
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import { NextResponse, URLPattern } from "next/server";
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import z from "zod";
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const ROUTES: [URLPattern, boolean][] = [
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["/event-types", process.env.APP_ROUTER_EVENT_TYPES_ENABLED === "1"] as const,
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].map(([pathname, enabled]) => [
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new URLPattern({
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pathname,
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}),
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enabled,
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]);
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const FUTURE_ROUTES_OVERRIDE_COOKIE_NAME = "x-calcom-future-routes-override";
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const FUTURE_ROUTES_ENABLED_COOKIE_NAME = "x-calcom-future-routes-enabled";
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const bucketSchema = z.union([z.literal("legacy"), z.literal("future")]);
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export const abTestMiddlewareFactory =
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(next: (req: NextRequest) => Promise<NextResponse<unknown>>): NextMiddleware =>
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async (req: NextRequest) => {
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const response = await next(req);
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const { pathname } = req.nextUrl;
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const override = req.cookies.has(FUTURE_ROUTES_OVERRIDE_COOKIE_NAME);
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const route = ROUTES.find(([regExp]) => regExp.test(req.url)) ?? null;
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const enabled = route !== null ? route[1] || override : false;
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if (pathname.includes("future") || !enabled) {
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return response;
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}
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const safeParsedBucket = override
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? { success: true as const, data: "future" as const }
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: bucketSchema.safeParse(req.cookies.get(FUTURE_ROUTES_ENABLED_COOKIE_NAME)?.value);
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if (!safeParsedBucket.success) {
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// cookie does not exist or it has incorrect value
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const bucket = getBucket();
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response.cookies.set(FUTURE_ROUTES_ENABLED_COOKIE_NAME, bucket, {
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expires: Date.now() + 1000 * 60 * 30,
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httpOnly: true,
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}); // 30 min in ms
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if (bucket === "legacy") {
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return response;
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}
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const url = req.nextUrl.clone();
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url.pathname = `future${pathname}/`;
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return NextResponse.rewrite(url, response);
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}
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if (safeParsedBucket.data === "legacy") {
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return response;
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}
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const url = req.nextUrl.clone();
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url.pathname = `future${pathname}/`;
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return NextResponse.rewrite(url, response);
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};
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