'use strict';

const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');
const test = require('node:test');

const root = path.resolve(__dirname, '..', '..');
const read = (file) => fs.readFileSync(path.join(root, file), 'utf8');

test('download relay configuration is pinned to built-in constants', () => {
  const dl = read('src/Content/Download.php');

  // The admin settings page is gone; the option must never be read again.
  assert.doesNotMatch(dl, /aksrt_download_config/);

  // The retired master switch is gone from the runtime.
  assert.doesNotMatch(dl, /function is_enabled/);

  // Single source of truth: fixed endpoint, per-token uses and TTL.
  assert.match(dl, /const ENDPOINT\s*=\s*'download'/);
  assert.match(dl, /const MAX_USES\s*=\s*1/);
  assert.match(dl, /const TTL_MINUTES\s*=\s*10/);

  // Rewrite regex and URL building share the configured alias.
  assert.match(dl, /preg_quote\(\$this->config\(\)\['endpoint'\], '\/'\)/);
  assert.match(dl, /home_url\('\/' \. \$config\['endpoint'\] \. '\/' \. \$token\)/);
  assert.match(dl, /add_action\('init', \[\$this, 'maybe_flush_rewrite'\], 99\)/);
  assert.match(dl, /flush_rewrite_rules\(false\)/);
  assert.match(dl, /aksrt_dl_rewrite_version/);

  // TTL and per-token max uses come from the fixed configuration.
  assert.match(dl, /'expires_in'\s+=> \$config\['ttl'\]/);
  assert.match(dl, /'max_uses'\s+=> \(int\) \$config\['max_uses'\]/);
});

test('the retired master switch leaves no direct-download branches behind', () => {
  const dl = read('src/Content/Download.php');
  const box = read('templates/parts/resource-download-box.php');
  const pay = read('inc/helpers/aksrt-pay.php');

  // No runtime switch and no option reads remain.
  assert.doesNotMatch(dl, /function is_enabled/);
  assert.doesNotMatch(dl, /aksrt_download_config/);

  // Direct mode was only reachable through the removed switch.
  assert.doesNotMatch(box, /direct_download/);
  assert.doesNotMatch(pay, /direct_download/);

  // Relay buttons stay the only download path on both surfaces; the login
  // anchor and the paid-card relay button keep their original markup.
  assert.match(box, /data-action="<\?php echo esc_attr\(\$btn_action\); \?>/);
  assert.match(box, /href="<\?php echo esc_url\(\$btn_href\); \?>/);
  assert.match(pay, /data-action="aksrt-download"/);

  // Dead standalone-page helper stays removed.
  assert.doesNotMatch(pay, /aksrt_is_download_alone_page_enabled/);
});

test('usage is counted only after full delivery, never for probes', () => {
  const dl = read('src/Content/Download.php');

  // Probe detection covers HEAD requests and speculative prefetches, which
  // validate availability but consume nothing.
  assert.match(dl, /private function is_probe_request\(\): bool/);
  assert.match(dl, /REQUEST_METHOD.*=== 'HEAD'/);
  assert.match(dl, /HTTP_SEC_PURPOSE/);
  assert.match(dl, /'prefetch'/);
  assert.match(dl, /!\$is_probe\) \{\s*\$this->consume_token/);

  // Local streaming splits headers from body and aborts stop consumption.
  assert.match(dl, /private function send_download_headers\(string \$path\): void/);
  assert.match(dl, /private function stream_body\(string \$path\): bool/);
  assert.match(dl, /if \(connection_aborted\(\)\) \{/);
  assert.match(dl, /return !connection_aborted\(\);/);

  // Atomic cap so concurrent finishes can not overshoot max_uses.
  assert.match(dl, /SET used_count = used_count \+ 1 WHERE token = %s AND used_count < max_uses/);

  // Expired / exhausted links stay a dead end instead of re-issuing silently.
  assert.match(dl, /status_header\(410\)/);
  assert.match(dl, /请回到资源页重新获取/);
  assert.doesNotMatch(dl, /fail_410\(\);\s*issue_token/);
});

test('expired links render a themed flat 410 page that follows the theme color', () => {
  const dl = read('src/Content/Download.php');

  // Full theme chrome instead of a bare wp_die page.
  assert.match(dl, /private function render_expired_page\(\): void/);
  assert.match(dl, /get_header\(\)/);
  assert.match(dl, /get_footer\(\)/);

  // wp_die remains only as the safety net when output already started.
  assert.match(dl, /headers_sent\(\)/);

  // Flat hero keyed to the runtime theme variables (light + html.dark).
  assert.match(dl, /var\(--color-primary-soft/);
  assert.match(dl, /var\(--color-primary/);
  assert.match(dl, /var\(--key-color/);
  assert.match(dl, /var\(--muted-4-color/);

  // Theme button system and FA5 icon form only (never "fa fa-").
  assert.match(dl, /class="btn-primary"/);
  assert.match(dl, /class="btn-outline"/);
  assert.match(dl, /fa fas fa-hourglass-end/);
  assert.doesNotMatch(dl, /\bfa fa-/);

  // The 410 page is a utility rewrite; the header component must never match
  // a page type for it (custom rewrites retain the is_home flag).
  const slider = read('inc/helpers/homepage/header-components.php');
  assert.match(slider, /class_exists\('\\AKSRT\\Content\\Download'\)/);
  assert.match(slider, /get_query_var\(\\AKSRT\\Content\\Download::QUERY_VAR\)/);
});

test('token generation retries on primary-key collisions', () => {
  const dl = read('src/Content/Download.php');
  assert.match(dl, /PRIMARY KEY\(token\) already guarantees uniqueness/);
  assert.match(dl, /for \(\$attempt = 0; \$attempt < 3; \$attempt\+\+\)/);
});