import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import test from "node:test";

const membershipPage = readFileSync(new URL("../src/app/membership/page.tsx", import.meta.url), "utf8");
const ordersPage = readFileSync(new URL("../src/app/membership/orders/page.tsx", import.meta.url), "utf8");

function countMatches(source: string, pattern: RegExp) {
  return source.match(pattern)?.length ?? 0;
}

test("account and packages are requested concurrently on mount", () => {
  assert.match(membershipPage, /await Promise\.allSettled\(\[fetchAccountData\(\), fetchPackages\(\)\]\);/);
  assert.doesNotMatch(membershipPage, /await fetchAccountData\(\);\s*await fetchPackages\(\)/);
  assert.doesNotMatch(membershipPage, /Promise\.all\(\[/);
});

test("a failing bootstrap request cannot hide the other section", () => {
  assert.match(membershipPage, /setAccountError\(caught instanceof Error/);
  assert.match(membershipPage, /setPackagesError\("套餐支付暂时不可用，请稍后重试"\)/);
  assert.match(membershipPage, /\{account \? `\$\{account\.credits\} 点` : accountError \|\| "正在读取…"\}/);
  assert.match(membershipPage, /\{packagesError && <p className="form-error" role="alert">\{packagesError\}<\/p>\}/);
});

test("membership and orders navigate through next/link instead of a document reload", () => {
  assert.match(membershipPage, /import Link from "next\/link"/);
  assert.match(membershipPage, /<Link className="membership-orders-entry" href="\/membership\/orders">/);
  assert.match(ordersPage, /import Link from "next\/link"/);
  assert.match(ordersPage, /<Link className="membership-back" href="\/membership" replace/);
  assert.doesNotMatch(membershipPage, /window\.location\.assign\("\/membership/);
  assert.doesNotMatch(ordersPage, /window\.location\.assign\("\/membership/);
});

test("401 redirects stay hard navigations so no client state survives the sign-out", () => {
  assert.match(membershipPage, /if \(response\.status === 401\) \{\s*window\.location\.assign\("\/login"\);/);
  assert.match(ordersPage, /if \(response\.status === 401\) \{\s*window\.location\.assign\("\/login"\);/);
  assert.equal(countMatches(membershipPage, /window\.location\.assign\("\/login"\)/g), 3);
  assert.equal(countMatches(ordersPage, /window\.location\.assign\("\/login"\)/g), 1);
});

test("browser back and the external cashier keep their native behaviour", () => {
  assert.match(membershipPage, /if \(window\.history\.length > 1\) window\.history\.back\(\);/);
  assert.match(membershipPage, /else window\.location\.assign\("\/"\);/);
  assert.match(membershipPage, /window\.open\(payload\.payUrl, "_blank", "noopener,noreferrer"\)/);
});

test("the hard navigation inventory does not grow", () => {
  assert.equal(countMatches(membershipPage, /window\.location\./g), 4);
  assert.equal(countMatches(ordersPage, /window\.location\./g), 1);
});

test("payment polling pauses on a hidden tab and refreshes when it returns", () => {
  assert.match(membershipPage, /if \(!document\.hidden\) startPolling\(\);/);
  assert.match(membershipPage, /document\.addEventListener\("visibilitychange", onVisibilityChange\);/);
  assert.match(membershipPage, /if \(document\.hidden\) \{\s*stopPolling\(\);\s*return;\s*\}/);
  assert.match(membershipPage, /void checkPaymentStatus\(\);\s*startPolling\(\);/);
  assert.match(membershipPage, /window\.setInterval\(\(\) => void checkPaymentStatus\(\), 3000\);/);
});

test("polling cleanup releases both the timer and the visibility listener", () => {
  assert.match(membershipPage, /if \(timer\) window\.clearInterval\(timer\);/);
  assert.match(membershipPage, /stopPolling\(\);\s*document\.removeEventListener\("visibilitychange", onVisibilityChange\);/);
});