/**
 * 自检：不依赖 wrangler / 网络，直接验证最容易出错的那几块纯逻辑。
 *   node node_modules/.bin/esbuild tools/selftest.ts --bundle --platform=node --format=esm --outfile=tools/.selftest.mjs && node tools/.selftest.mjs
 */
import { md5, md5Lower } from '../src/lib/md5';
import { formatDateCN } from '../src/lib/util';
import { renderMarkdown } from '../src/lib/md';
import { hashPassword, verifyPassword, signToken, verifyToken } from '../src/lib/session';
import { parseSimpleYaml } from '../src/routes/admin';
import type { Env } from '../src/types';

let pass = 0;
let fail = 0;

function eq(name: string, actual: unknown, expected: unknown) {
  const a = JSON.stringify(actual);
  const e = JSON.stringify(expected);
  if (a === e) {
    pass++;
    console.log(`  PASS  ${name}`);
  } else {
    fail++;
    console.log(`  FAIL  ${name}\n        实际: ${a}\n        期望: ${e}`);
  }
}

function ok(name: string, cond: boolean) {
  eq(name, cond, true);
}

// ------------------------------------------------------------------ MD5
console.log('== MD5（Gravatar hash，必须与官方一致） ==');
eq('md5("")', md5(''), 'd41d8cd98f00b204e9800998ecf8427e');
eq('md5("abc")', md5('abc'), '900150983cd24fb0d6963f7d28e17f72');
eq('md5("test@example.com")', md5('test@example.com'), '55502f40dc8b7c769880b10874abc9d0');
eq('md5("z@usj.cc")', md5('z@usj.cc'), '1cce0a22c2c7648eab76ec876c6a54d9');
eq('md5("优世界") 多字节', md5('优世界'), '7fc1dce97eead18fa9e9ae4fbb8044cb');
eq('md5 长输入（跨 block）', md5('a'.repeat(200)), '887f30b43b2867f4a9accceee7d16e6c');
eq('md5Lower 去空格+小写', md5Lower('  Z@USJ.CC  '), '1cce0a22c2c7648eab76ec876c6a54d9');

async function main() {
  // ------------------------------------------------------------------ 时间
  console.log('== 时间格式（Asia/Shanghai） ==');
  eq('1631363636000', formatDateCN(1631363636000), '2021-09-11 20:33:56');
  eq('0', formatDateCN(0), '1970-01-01 08:00:00');

  // ------------------------------------------------------------------ Markdown
  console.log('== Markdown 渲染 ==');
  ok('<script> 被转义', !renderMarkdown('<script>alert(1)</script>').includes('<script>'));
  ok('img onerror 被转义', !renderMarkdown('<img src=x onerror=alert(1)>').includes('onerror='));
  ok('javascript: 链接被剔除', !renderMarkdown('[x](javascript:alert(1))').includes('javascript:'));
  ok('**粗体**', renderMarkdown('**hi**').includes('<strong>hi</strong>'));
  ok('`行内代码`', renderMarkdown('`code`').includes('<code>code</code>'));
  ok('裸链接可点', renderMarkdown('见 https://usj.cc 一游').includes('<a href="https://usj.cc"'));
  ok('单换行 → <br>', renderMarkdown('a\nb').includes('a<br>b'));
  ok('``` 代码块', renderMarkdown('```js\nlet a=1;\n```').includes('<pre><code class="language-js">'));
  ok('& 被转义', renderMarkdown('a & b').includes('a &amp; b'));
  ok('含单引号的正文不炸', renderMarkdown("it's fine").includes('it&#39;s fine'));

  // ------------------------------------------------------------------ 密码
  console.log('== 密码（PBKDF2 / md5 / 明文兼容） ==');
  const hashed = await hashPassword('s3cret-密码');
  ok('hash 前缀是 (pbkdf2)', hashed.startsWith('(pbkdf2)'));
  ok('正确密码通过', await verifyPassword(hashed, 's3cret-密码'));
  ok('错误密码拒绝', !(await verifyPassword(hashed, 'wrong')));
  ok('空密码拒绝', !(await verifyPassword('', '')));
  ok('兼容 (md5) 旧密码', await verifyPassword('(md5)1cce0a22c2c7648eab76ec876c6a54d9', 'z@usj.cc'));
  ok('兼容明文旧密码', await verifyPassword('plain', 'plain'));
  ok('(bcrypt) 明确不支持', !(await verifyPassword('(bcrypt)$2a$10$xxx', 'whatever')));

  // ------------------------------------------------------------------ Token
  console.log('== 登录 token（HMAC 无状态） ==');
  const env = { TOKEN_SECRET: 'test-secret-please-change' } as Env;
  const token = await signToken(env, 42);
  ok('token 是两段式', token.split('.').length === 2);
  const payload = await verifyToken(env, token);
  eq('解出的 uid', payload?.uid, 42);
  ok(
    '改一位就失效',
    !(await verifyToken(env, token.slice(0, -2) + (token.endsWith('AA') ? 'BB' : 'AA'))),
  );
  ok('换密钥就失效', !(await verifyToken({ TOKEN_SECRET: 'other' } as Env, token)));
  ok('乱串被拒', !(await verifyToken(env, 'not-a-token')));
  ok('空串被拒', !(await verifyToken(env, '')));

  // ------------------------------------------------------------------ YAML
  console.log('== 设置模板 YAML 解析 ==');
  const tpl = `host: "0.0.0.0"
port: 23366
captcha:
  enabled: false
  mode: off            # 关闭验证码
moderator:
  pending_default: true
ip_region:
  enabled: false
frontend:
  pvAdd: true
  locale: zh-CN
  pluginURLs: []
site_default: 优世界
`;
  const parsed = parseSimpleYaml(tpl) as any;
  eq('顶层字符串', parsed.host, '0.0.0.0');
  eq('顶层数字', parsed.port, 23366);
  eq('嵌套布尔', parsed.captcha.enabled, false);
  eq('行内注释被剔除', parsed.captcha.mode, 'off');
  eq('嵌套布尔2', parsed.moderator.pending_default, true);
  eq('三层取值', parsed.frontend.pvAdd, true);
  eq('中文值', parsed.site_default, '优世界');
  eq('空数组', parsed.frontend.pluginURLs, []);

  console.log(`\n通过 ${pass} / 失败 ${fail}`);
  process.exit(fail === 0 ? 0 : 1);
}

void main();