1import * as Alchemy from "alchemy";
2import * as Hetzner from "alchemy/Hetzner";
3import * as Test from "alchemy/Test/Bun";
4import { expect } from "bun:test";
5import * as Console from "effect/Console";
6import * as Data from "effect/Data";
7import * as Effect from "effect/Effect";
8import * as Schedule from "effect/Schedule";
9import Stack from "../alchemy.run.ts";
10
11// A fresh Hetzner deployment (and the Hetzner Server behind it) can serve
12// transient 404/5xx responses while it propagates. `Test.getWhenReady`
13// fails on that cold-start window and retries until the site serves a
14// real response.
15const { getWhenReady } = Test;
16
17class AssetNotReady extends Data.TaggedError("AssetNotReady")<{
18 body: string;
19}> {}
20
21// While the asset manifest and Hetzner edge caches are still
22// propagating, a 200 body can be stale — the status alone can't
23// distinguish "not yet" from "served", so retry until the body matches.
24const getBodyWhenReady = (url: string, expected: string) =>
25 Effect.gen(function* () {
26 const res = yield* getWhenReady(url);
27 expect(res.status).toBe(200);
28 const body = yield* res.text;
29 if (!body.includes(expected)) {
30 return yield* Effect.fail(new AssetNotReady({ body }));
31 }
32 return body;
33 }).pipe(
34 Effect.retry({
35 while: (error) => error instanceof AssetNotReady,
36 schedule: Schedule.max([
37 Schedule.min([
38 Schedule.exponential("500 millis"),
39 Schedule.spaced("3 seconds"),
40 ]),
41 Schedule.recurs(20),
42 ]),
43 }),
44 );
45
46const hasCreds = !!process.env.HCLOUD_TOKEN;
47
48const { test, beforeAll, afterAll, deploy, destroy } = Test.make({
49 providers: Hetzner.providers(),
50 state: Alchemy.localState(),
51 profile: process.env.ALCHEMY_PROFILE,
52});
53
54// The first deploy runs the full Next.js + Node build AND creates a
55// Hetzner deployment (~5-10 minutes), so give the hook far more
56// headroom than the default 120s.
57if (!hasCreds) {
58 test.skip("skipped without HCLOUD_TOKEN", Effect.void);
59} else {
60 const stack = beforeAll(deploy(Stack).pipe(Effect.tap(Console.log)), {
61 timeout: 600_000,
62 });
63 // Deleting the Hetzner deployment takes several minutes too.
64 afterAll.skipIf(!!process.env.NO_DESTROY)(destroy(Stack), {
65 timeout: 600_000,
66 });
67
68 const base = Effect.map(stack, ({ url }) => {
69 if (!url) throw new Error("expected the site to expose a url");
70 return String(url).replace(/\/+$/, "");
71 });
72
73 test(
74 "deploys and exposes a url",
75 Effect.gen(function* () {
76 const { url } = yield* stack;
77 expect(url).toBeString();
78 }),
79 { timeout: 180_000 },
80 );
81
82 // In-repo ONLY: bun's isolated-install store breaks Node's traced
83 // node_modules when the Hetzner Server zip flattens the `next` symlink (see the
84 // README) — Hetzner Server-served routes 500 with a missing @swc/helpers module.
85 // A standalone copy of this example passes all five tests. Set
86 // AWS_WEBSITE_NEXTJS_LAMBDA=1 to run them here (e.g. once the
87 // symlink-preserving bundle lands).
88 test(
89 "serves the server-rendered home page",
90 Effect.gen(function* () {
91 const url = yield* base;
92 const res = yield* getWhenReady(url);
93 expect(res.status).toBe(200);
94 const html = yield* res.text;
95 expect(html).toContain("Next.js on Hetzner");
96 // The `GREETING` env value from alchemy.run.ts, read via
97 // `process.env` in the force-dynamic page — proves the Hetzner Server
98 // rendered it at request time.
99 expect(html).toContain("Hello from Next.js on Hetzner!");
100 }),
101 { timeout: 180_000 },
102 );
103
104 test(
105 "serves the dynamic API route",
106 Effect.gen(function* () {
107 const url = yield* base;
108 const res = yield* getWhenReady(`${url}/api/hello`);
109 expect(res.status).toBe(200);
110 const body = (yield* res.json) as { hello: string };
111 expect(body.hello).toBe("world");
112 }),
113 { timeout: 180_000 },
114 );
115
116 test(
117 "compiles tailwind via postcss",
118 Effect.gen(function* () {
119 const url = yield* base;
120 // The page markup uses Tailwind utilities — proving the project's own
121 // postcss.config.mjs (@tailwindcss/postcss) ran inside `next build`.
122 const html = yield* getBodyWhenReady(url, "text-3xl");
123 expect(html).toContain("text-3xl");
124
125 // Next.js links the compiled stylesheet from under /_next/static/
126 // (chunks/*.css as of Next 16).
127 const match = html.match(/\/_next\/static\/[^"']+\.css/);
128 expect(match).not.toBeNull();
129
130 // The stylesheet must contain the compiled Tailwind rule, not just the
131 // class name in markup.
132 const css = yield* getBodyWhenReady(`${url}${match![0]}`, ".text-3xl");
133 expect(css).toContain(".text-3xl");
134 expect(css).toContain(".font-bold");
135 }),
136 { timeout: 180_000 },
137 );
138
139 test(
140 "serves a static asset from public/",
141 Effect.gen(function* () {
142 const url = yield* base;
143 const body = yield* getBodyWhenReady(
144 `${url}/robots.txt`,
145 "User-agent: *",
146 );
147 expect(body).toContain("User-agent: *");
148 }),
149 { timeout: 180_000 },
150 );
151}