import { mkdir, writeFile } from 'node:fs/promises';
import { request } from 'node:https';
import { dirname, resolve } from 'node:path';
import { fileURLToPath } from 'node:url';

const baseUrl = (process.env.LISGLOSIPS_BASE_URL || 'https://100.90.90.91').replace(/\/$/, '');
const username = process.env.LISGLOSIPS_AUTH_USERNAME || 'admin';
const password = process.env.LISGLOSIPS_AUTH_PASSWORD;
const lowUsername = process.env.LISGLOSIPS_LOW_AUTH_USERNAME || 'codex.low';
const lowPassword = process.env.LISGLOSIPS_LOW_AUTH_PASSWORD || `${password}!low`;
const timeoutMs = Number(process.env.LISGLOSIPS_PERF_SECURITY_TIMEOUT_MS || 30000);
const concurrency = Number(process.env.LISGLOSIPS_PERF_SECURITY_CONCURRENCY || 12);
const reportDir = resolve(dirname(fileURLToPath(import.meta.url)), '../reports');

const customerName = '自动化8.9安全客户';
const customerDomain = 'codex89.example.test';

if (!password) {
  console.error('LISGLOSIPS_AUTH_PASSWORD is required.');
  process.exit(2);
}

function requestApi(path, options = {}) {
  return new Promise((resolveRequest) => {
    const startedAt = Date.now();
    const url = new URL(path, baseUrl);
    const method = options.method || 'GET';
    const body = options.body === undefined ? undefined : JSON.stringify(options.body);
    const headers = {
      Accept: 'application/json,text/html;q=0.9,*/*;q=0.8',
      'User-Agent': 'lisglosips-remote-performance-security/1.0',
      ...(body ? { 'Content-Type': 'application/json', 'Content-Length': Buffer.byteLength(body) } : {}),
      ...(options.accessToken ? { Authorization: `Bearer ${options.accessToken}` } : {}),
      ...(options.authorization ? { Authorization: options.authorization } : {}),
    };

    console.log(`REQ ${method} ${path}`);
    let settled = false;
    let req;
    const hardTimer = setTimeout(() => req?.destroy(new Error(`Request exceeded hard timeout after ${timeoutMs}ms`)), timeoutMs);
    const finish = (result) => {
      if (settled) return;
      settled = true;
      clearTimeout(hardTimer);
      console.log(`RES ${method} ${path} ${result.statusCode || 'ERR'} ${result.durationMs}ms`);
      resolveRequest(result);
    };

    req = request(
      url,
      {
        method,
        rejectUnauthorized: process.env.LISGLOSIPS_REJECT_UNAUTHORIZED === '1',
        timeout: timeoutMs,
        headers,
      },
      (res) => {
        const chunks = [];
        res.on('data', (chunk) => chunks.push(chunk));
        res.on('end', () => {
          finish({
            path,
            method,
            ok: true,
            statusCode: res.statusCode || 0,
            durationMs: Date.now() - startedAt,
            contentType: String(res.headers['content-type'] || ''),
            headers: res.headers,
            body: Buffer.concat(chunks).toString('utf8'),
          });
        });
      }
    );

    req.setTimeout(timeoutMs, () => req.destroy(new Error(`Request timed out after ${timeoutMs}ms`)));
    req.on('error', (error) => {
      finish({ path, method, ok: false, statusCode: 0, durationMs: Date.now() - startedAt, contentType: '', headers: {}, body: '', error: error.message });
    });
    if (body) req.write(body);
    req.end();
  });
}

function parseJson(result) {
  try {
    return JSON.parse(result.body);
  } catch {
    return null;
  }
}

function decodeCaptcha(imageDataUrl) {
  const encoded = String(imageDataUrl || '').split(',', 2)[1];
  if (!encoded) return '';
  const svg = Buffer.from(encoded, 'base64').toString('utf8');
  return [...svg.matchAll(/<text\b[^>]*>([^<]+)<\/text>/g)].map((match) => match[1]).join('');
}

async function login(loginUsername, loginPassword) {
  const captcha = await requestApi('/api/v2/auth/captcha');
  const captchaBody = parseJson(captcha);
  const result = await requestApi('/api/v2/auth/login', {
    method: 'POST',
    body: { username: loginUsername, password: loginPassword, captchaId: captchaBody?.captchaId, captchaCode: decodeCaptcha(captchaBody?.imageDataUrl) },
  });
  return { result, body: parseJson(result) };
}

function check(name, pass, detail) {
  return { name, pass, detail };
}

function statusCheck(name, result, expectedStatus) {
  return check(name, result.ok && result.statusCode === expectedStatus, result.error || `status=${result.statusCode}, duration=${result.durationMs}ms`);
}

function reportLine(item) {
  return `| ${item.pass ? 'PASS' : 'FAIL'} | ${item.name} | ${String(item.detail).replace(/\|/g, '\\|')} |`;
}

function bodyLooksSafe(result) {
  return !/stack|trace|DATABASE_URL|JWT_SECRET|password|secret|\/etc\/|\/var\/|[A-Z]:\\/i.test(result.body || '');
}

async function findCustomer(accessToken) {
  const list = await requestApi('/api/v2/customers', { accessToken });
  const body = parseJson(list);
  const customer = Array.isArray(body) ? body.find((item) => item.name === customerName || item.domain === customerDomain) : null;
  return { list, customer };
}

async function ensureCustomer(accessToken) {
  const existing = await findCustomer(accessToken);
  if (!existing.customer) {
    const created = await requestApi('/api/v2/customers', {
      method: 'POST',
      accessToken,
      body: {
        name: customerName,
        contactName: 'Codex测试联系人',
        phone: '13800138900',
        email: 'codex-89@example.test',
        domain: customerDomain,
        billingMode: 'PREPAID',
        creditLimit: '100.000000',
        minBalance: '5.000000',
        notes: 'Codex 8.9 replay/security test customer',
      },
    });
    return { action: 'created', result: created, customer: parseJson(created) };
  }

  const updated = await requestApi(`/api/v2/customers/${encodeURIComponent(existing.customer.id)}`, {
    method: 'PATCH',
    accessToken,
    body: {
      name: customerName,
      contactName: 'Codex测试联系人',
      phone: '13800138900',
      email: 'codex-89@example.test',
      domain: customerDomain,
      billingMode: 'PREPAID',
      creditLimit: '100.000000',
      minBalance: '5.000000',
      notes: 'Codex 8.9 replay/security test customer',
    },
  });
  return { action: 'updated', result: updated, customer: parseJson(updated) };
}

function percentile(values, ratio) {
  const sorted = [...values].sort((left, right) => left - right);
  return sorted[Math.min(sorted.length - 1, Math.floor((sorted.length - 1) * ratio))] ?? 0;
}

const checks = [];

const root = await requestApi('/');
checks.push(statusCheck('HTTPS root is reachable before light concurrency', root, 200));
checks.push(check('HTTPS root contains app root', root.contentType.includes('text/html') && root.body.includes('<div id="root"></div>'), `contentType=${root.contentType}, bytes=${Buffer.byteLength(root.body, 'utf8')}`));

const readyBefore = await requestApi('/api/v2/health/ready');
checks.push(statusCheck('ready health is ok before light concurrency', readyBefore, 200));
checks.push(check('ready health reports database and redis ok before light concurrency', parseJson(readyBefore)?.checks?.database === 'ok' && parseJson(readyBefore)?.checks?.redis === 'ok', `body=${JSON.stringify(parseJson(readyBefore))}`));

const adminLogin = await login(username, password);
checks.push(statusCheck('admin can login', adminLogin.result, 200));
checks.push(check('admin login returns access token', typeof adminLogin.body?.accessToken === 'string', `tokenLength=${adminLogin.body?.accessToken?.length || 0}`));
const accessToken = adminLogin.body?.accessToken;

const lowLogin = await login(lowUsername, lowPassword);
checks.push(statusCheck('low-privilege user can login for RBAC checks', lowLogin.result, 200));

const burstStartedAt = Date.now();
const burst = await Promise.all([
  ...Array.from({ length: concurrency }, () => requestApi('/api/v2/health/ready')),
  ...Array.from({ length: concurrency }, () => requestApi('/api/v2/auth/captcha')),
]);
const burstDurations = burst.map((item) => item.durationMs);
const burstFailed = burst.filter((item) => !item.ok || item.statusCode !== 200);
checks.push(check('PERF light API burst returns only 200 responses', burstFailed.length === 0, `requests=${burst.length}, failed=${burstFailed.length}, wallMs=${Date.now() - burstStartedAt}`));
checks.push(check('PERF light API burst p95 stays under 10s', percentile(burstDurations, 0.95) < 10000, `p95=${percentile(burstDurations, 0.95)}ms, max=${Math.max(...burstDurations)}ms`));

const readyAfter = await requestApi('/api/v2/health/ready');
checks.push(statusCheck('ready health recovers after light concurrency', readyAfter, 200));
checks.push(check('ready health reports database and redis ok after light concurrency', parseJson(readyAfter)?.checks?.database === 'ok' && parseJson(readyAfter)?.checks?.redis === 'ok', `body=${JSON.stringify(parseJson(readyAfter))}`));

const forgedToken = await requestApi('/api/v2/dashboard/summary', { authorization: 'Bearer not.a.valid.jwt' });
checks.push(statusCheck('SEC forged bearer token is rejected', forgedToken, 401));
checks.push(check('SEC forged token error does not leak internals', bodyLooksSafe(forgedToken), `body=${forgedToken.body.slice(0, 160)}`));

const unauthWrite = await requestApi('/api/v2/customers', {
  method: 'POST',
  body: { name: 'unauth should not create' },
});
checks.push(statusCheck('SEC unauthenticated write is rejected', unauthWrite, 401));
checks.push(check('SEC unauthenticated write error does not leak internals', bodyLooksSafe(unauthWrite), `body=${unauthWrite.body.slice(0, 160)}`));

const lowWrite = await requestApi('/api/v2/customers', {
  method: 'POST',
  accessToken: lowLogin.body?.accessToken,
  body: {
    name: '低权限不应创建客户',
    contactName: 'Forbidden',
    phone: '13800138999',
    email: 'forbidden@example.test',
    domain: 'forbidden.example.test',
    billingMode: 'PREPAID',
  },
});
checks.push(statusCheck('SEC low-privilege user cannot create customer', lowWrite, 403));
checks.push(check('SEC low-privilege write error does not leak internals', bodyLooksSafe(lowWrite), `body=${lowWrite.body.slice(0, 160)}`));

const customerSetup = await ensureCustomer(accessToken);
checks.push(statusCheck(`SEC replay test customer is ${customerSetup.action}`, customerSetup.result, customerSetup.action === 'created' ? 201 : 200));
const customerId = customerSetup.customer?.id;

const replayKey = `codex89:replay:${Date.now()}`;
const firstRecharge = await requestApi(`/api/v2/customers/${encodeURIComponent(customerId)}/recharges`, {
  method: 'POST',
  accessToken,
  body: { amount: '1.000000', idempotencyKey: replayKey, remark: 'Codex 8.9 replay probe' },
});
const firstRechargeBody = parseJson(firstRecharge);
checks.push(statusCheck('SEC first idempotent recharge succeeds', firstRecharge, 201));

const replayRecharge = await requestApi(`/api/v2/customers/${encodeURIComponent(customerId)}/recharges`, {
  method: 'POST',
  accessToken,
  body: { amount: '1.000000', idempotencyKey: replayKey, remark: 'Codex 8.9 replay probe' },
});
const replayRechargeBody = parseJson(replayRecharge);
checks.push(statusCheck('SEC exact idempotent replay returns success', replayRecharge, 201));
checks.push(check('SEC exact idempotent replay returns same recharge id', replayRechargeBody?.id === firstRechargeBody?.id, `first=${firstRechargeBody?.id}, replay=${replayRechargeBody?.id}`));

const conflictingReplay = await requestApi(`/api/v2/customers/${encodeURIComponent(customerId)}/recharges`, {
  method: 'POST',
  accessToken,
  body: { amount: '2.000000', idempotencyKey: replayKey, remark: 'Codex 8.9 replay conflict' },
});
checks.push(statusCheck('SEC conflicting idempotency replay is rejected', conflictingReplay, 409));
checks.push(check('SEC conflicting replay error does not leak original body', !conflictingReplay.body.includes('Codex 8.9 replay probe') && bodyLooksSafe(conflictingReplay), `body=${conflictingReplay.body.slice(0, 160)}`));

const lowRecharge = await requestApi(`/api/v2/customers/${encodeURIComponent(customerId)}/recharges`, {
  method: 'POST',
  accessToken: lowLogin.body?.accessToken,
  body: { amount: '1.000000', idempotencyKey: `codex89:low:${Date.now()}`, remark: 'Forbidden replay probe' },
});
checks.push(statusCheck('SEC low-privilege user cannot replay/write recharge', lowRecharge, 403));

const missingRecording = await requestApi('/api/v2/recordings/not-a-real-recording/play', { accessToken });
checks.push(statusCheck('SEC missing recording playback returns 404', missingRecording, 404));
checks.push(check('SEC missing recording playback error does not expose paths', bodyLooksSafe(missingRecording), `body=${missingRecording.body.slice(0, 160)}`));

const traversalRecording = await requestApi('/api/v2/recordings/%2E%2E%2F%2E%2E%2Fetc%2Fpasswd/play', { accessToken });
checks.push(check('SEC encoded traversal recording id is rejected safely', [400, 404].includes(traversalRecording.statusCode), `status=${traversalRecording.statusCode}, body=${traversalRecording.body.slice(0, 120)}`));
checks.push(check('SEC traversal playback error does not expose filesystem paths', bodyLooksSafe(traversalRecording), `body=${traversalRecording.body.slice(0, 160)}`));

const stamp = new Date().toISOString().replaceAll(/[-:]/g, '').replace(/\.\d{3}Z$/, 'Z');
const reportPath = resolve(reportDir, `REMOTE_PERFORMANCE_SECURITY_${stamp}.md`);
const notes = [
  '',
  '## Notes',
  '',
  '- This run intentionally avoids disruptive fault injection: no Worker, MySQL, Redis, OpenSIPS, or SIP traffic was stopped or modified.',
  '- PERF-001/PERF-002 SIP call concurrency, SEC-001 illegal-source SIP probe, and SEC-002 CPS probe still require A/T-side SIP tooling and CDR/recording verification.',
  '- FAIL-001 through FAIL-004 require an explicit maintenance window, rollback point, and service-stop approval before execution.',
  '- The executed subset covers HTTPS/API light concurrency, service recovery after burst, forged/unauthenticated/low-privilege access, idempotency replay, and recording path-safety black-box checks.',
];
const report = [
  '# Remote Performance, Fault, and Security Test Report',
  '',
  `Date: ${new Date().toISOString()}`,
  `Base URL: ${baseUrl}`,
  `Concurrency: ${concurrency} ready + ${concurrency} captcha requests`,
  '',
  '| Result | Check | Detail |',
  '| --- | --- | --- |',
  ...checks.map(reportLine),
  ...notes,
  '',
].join('\n');

await mkdir(reportDir, { recursive: true });
await writeFile(reportPath, report, 'utf8');

for (const item of checks) {
  console.log(`${item.pass ? 'PASS' : 'FAIL'} ${item.name} - ${item.detail}`);
}
console.log(`Report: ${reportPath}`);

if (checks.some((item) => !item.pass)) {
  process.exitCode = 1;
}