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_VENDORS_TIMEOUT_MS || 30000);
const reportDir = resolve(dirname(fileURLToPath(import.meta.url)), '../reports');

const vendorName = '自动化8.4供应商';
const primaryGatewayName = '自动化8.4主落地网关';
const backupGatewayName = '自动化8.4备落地网关';
const lineGroupName = '自动化8.4线路组';

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',
      'User-Agent': 'lisglosips-remote-vendors-line-groups/1.0',
      ...(body ? { 'Content-Type': 'application/json', 'Content-Length': Buffer.byteLength(body) } : {}),
      ...(options.accessToken ? { Authorization: `Bearer ${options.accessToken}` } : {}),
    };

    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'] || ''),
            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: '', 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 statusInCheck(name, result, statuses) {
  return check(name, result.ok && statuses.includes(result.statusCode), result.error || `status=${result.statusCode}, expected=${statuses.join('/')}, duration=${result.durationMs}ms`);
}

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

async function ensureVendor(accessToken) {
  const list = await requestApi('/api/v2/vendors', { accessToken });
  const items = parseJson(list);
  const existing = Array.isArray(items) ? items.find((item) => item.name === vendorName) : null;
  const body = {
    name: vendorName,
    contactName: 'Codex 8.4',
    phone: '13900138400',
    email: 'codex-84-vendor@example.test',
    creditLimit: '200.000000',
    settlement: '月结',
    notes: 'Codex 8.4 vendor test fixture',
  };
  if (existing) {
    const updated = await requestApi(`/api/v2/vendors/${encodeURIComponent(existing.id)}`, { method: 'PATCH', accessToken, body });
    return { action: 'updated', result: updated, vendor: parseJson(updated) };
  }
  const created = await requestApi('/api/v2/vendors', { method: 'POST', accessToken, body });
  return { action: 'created', result: created, vendor: parseJson(created) };
}

function gatewayBody(vendorId, name, host, priorityOffset = 0) {
  return {
    vendorId,
    name,
    authMode: 'IP',
    host,
    port: 5060,
    transport: 'udp',
    cpsLimit: 30 + priorityOffset,
    concurrencyLimit: 300 + priorityOffset,
    billingCycleSec: 60,
    cycleRate: priorityOffset === 0 ? '0.030000' : '0.035000',
    landingCalleePrefix: '86',
    status: 'ENABLED',
    forbiddenPeriods: [{ weekdayMask: 127, startTime: '00:00:00', endTime: '00:05:00' }],
    codecs: [
      { codec: 'PCMA', priority: 10 },
      { codec: 'PCMU', priority: 20 },
    ],
    prefixRules: [
      { direction: 'CALLEE', matchPrefix: '84', replacePrefix: '86', priority: 10 },
      { direction: 'CALLER', matchPrefix: '0', replacePrefix: '', priority: 10 },
    ],
    callerRewritePool: [{ caller: priorityOffset === 0 ? '0551840001' : '0551840002', weight: 100, status: 'ENABLED' }],
  };
}

async function ensureVendorGateway(accessToken, vendorId, name, host, priorityOffset = 0) {
  const list = await requestApi(`/api/v2/vendor-gateways?vendorId=${encodeURIComponent(vendorId)}`, { accessToken });
  const items = parseJson(list);
  const existing = Array.isArray(items) ? items.find((item) => item.name === name) : null;
  const body = gatewayBody(vendorId, name, host, priorityOffset);
  if (existing) {
    const updated = await requestApi(`/api/v2/vendor-gateways/${encodeURIComponent(existing.id)}`, { method: 'PATCH', accessToken, body });
    return { action: 'updated', result: updated, gateway: parseJson(updated) };
  }
  const created = await requestApi('/api/v2/vendor-gateways', { method: 'POST', accessToken, body });
  return { action: 'created', result: created, gateway: parseJson(created) };
}

async function ensureLineGroup(accessToken) {
  const list = await requestApi('/api/v2/landing-line-groups', { accessToken });
  const items = parseJson(list);
  const existing = Array.isArray(items) ? items.find((item) => item.name === lineGroupName) : null;
  const body = { name: lineGroupName, status: 'ENABLED', notes: 'Codex 8.4 line group test fixture' };
  if (existing) {
    const updated = await requestApi(`/api/v2/landing-line-groups/${encodeURIComponent(existing.id)}`, { method: 'PATCH', accessToken, body });
    return { action: 'updated', result: updated, group: parseJson(updated) };
  }
  const created = await requestApi('/api/v2/landing-line-groups', { method: 'POST', accessToken, body });
  return { action: 'created', result: created, group: parseJson(created) };
}

async function ensureLineGroupItem(accessToken, group, gateway, priority, weight) {
  const existing = group.items?.find((item) => item.vendorGatewayId === gateway.id);
  if (existing) {
    const updated = await requestApi(`/api/v2/landing-line-groups/items/${encodeURIComponent(existing.id)}`, {
      method: 'PATCH',
      accessToken,
      body: { priority, weight, concurrencyCap: priority === 10 ? 100 : 80, status: 'ENABLED' },
    });
    return { action: 'updated', result: updated, item: parseJson(updated) };
  }
  const added = await requestApi(`/api/v2/landing-line-groups/${encodeURIComponent(group.id)}/items`, {
    method: 'POST',
    accessToken,
    body: { vendorGatewayId: gateway.id, priority, weight, concurrencyCap: priority === 10 ? 100 : 80, status: 'ENABLED' },
  });
  const addedGroup = parseJson(added);
  return { action: 'added', result: added, item: addedGroup?.items?.find((item) => item.vendorGatewayId === gateway.id), group: addedGroup };
}

const checks = [];
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 lowVendorList = await requestApi('/api/v2/vendors', { accessToken: lowLogin.body?.accessToken });
checks.push(statusCheck('low-privilege user cannot list vendors', lowVendorList, 403));
const lowLineGroupList = await requestApi('/api/v2/landing-line-groups', { accessToken: lowLogin.body?.accessToken });
checks.push(statusCheck('low-privilege user cannot list line groups', lowLineGroupList, 403));

const invalidVendor = await requestApi('/api/v2/vendors', { method: 'POST', accessToken, body: { name: '', creditLimit: '0.000000' } });
checks.push(statusCheck('invalid vendor is rejected', invalidVendor, 400));

const vendor = await ensureVendor(accessToken);
checks.push(statusCheck(`vendor is ${vendor.action}`, vendor.result, vendor.action === 'created' ? 201 : 200));
checks.push(check('vendor has expected credit limit', vendor.vendor?.creditLimit === '200.000000', `vendorId=${vendor.vendor?.id}, creditLimit=${vendor.vendor?.creditLimit}`));

const invalidGateway = await requestApi('/api/v2/vendor-gateways', {
  method: 'POST',
  accessToken,
  body: { vendorId: vendor.vendor?.id, name: '自动化8.4无效落地网关', authMode: 'IP', host: 'bad host', cpsLimit: 1 },
});
const invalidGatewayBody = parseJson(invalidGateway);
checks.push(statusCheck('invalid vendor gateway host is rejected', invalidGateway, 400));
checks.push(check('invalid host returns HOST_INVALID', invalidGatewayBody?.code === 'HOST_INVALID', `code=${invalidGatewayBody?.code || 'n/a'}`));

const weakSipGateway = await requestApi('/api/v2/vendor-gateways', {
  method: 'POST',
  accessToken,
  body: { vendorId: vendor.vendor?.id, name: '自动化8.4弱SIP网关', authMode: 'SIP_DIGEST', host: '10.84.0.9', sipUsername: 'vgw84', sipPassword: 'short' },
});
checks.push(statusCheck('weak SIP password is rejected', weakSipGateway, 400));

const primary = await ensureVendorGateway(accessToken, vendor.vendor?.id, primaryGatewayName, '10.84.0.10', 0);
checks.push(statusCheck(`primary vendor gateway is ${primary.action}`, primary.result, primary.action === 'created' ? 201 : 200));
checks.push(check('primary gateway has child config', primary.gateway?.codecs?.length === 2 && primary.gateway?.prefixRules?.length === 2 && primary.gateway?.callerRewritePool?.length === 1, `codecs=${primary.gateway?.codecs?.length}, prefixRules=${primary.gateway?.prefixRules?.length}, callerRewrite=${primary.gateway?.callerRewritePool?.length}`));

const backup = await ensureVendorGateway(accessToken, vendor.vendor?.id, backupGatewayName, '10.84.0.11', 5);
checks.push(statusCheck(`backup vendor gateway is ${backup.action}`, backup.result, backup.action === 'created' ? 201 : 200));

const disableGateway = await requestApi(`/api/v2/vendor-gateways/${encodeURIComponent(backup.gateway?.id)}/disable`, { method: 'POST', accessToken });
checks.push(statusCheck('vendor gateway can be disabled', disableGateway, 201));
checks.push(check('disabled vendor gateway status is DISABLED', parseJson(disableGateway)?.status === 'DISABLED', `status=${parseJson(disableGateway)?.status}`));

const enableGateway = await requestApi(`/api/v2/vendor-gateways/${encodeURIComponent(backup.gateway?.id)}/enable`, { method: 'POST', accessToken });
checks.push(statusCheck('vendor gateway can be enabled', enableGateway, 201));
checks.push(check('enabled vendor gateway status is ENABLED', parseJson(enableGateway)?.status === 'ENABLED', `status=${parseJson(enableGateway)?.status}`));

const lineGroup = await ensureLineGroup(accessToken);
checks.push(statusCheck(`line group is ${lineGroup.action}`, lineGroup.result, lineGroup.action === 'created' ? 201 : 200));

const primaryItem = await ensureLineGroupItem(accessToken, lineGroup.group, primary.gateway, 10, 70);
checks.push(statusInCheck(`primary line group item is ${primaryItem.action}`, primaryItem.result, primaryItem.action === 'added' ? [201] : [200]));
const refreshedGroup = primaryItem.group || parseJson(await requestApi(`/api/v2/landing-line-groups/${encodeURIComponent(lineGroup.group?.id)}`, { accessToken }));
const backupItem = await ensureLineGroupItem(accessToken, refreshedGroup, backup.gateway, 20, 30);
checks.push(statusInCheck(`backup line group item is ${backupItem.action}`, backupItem.result, backupItem.action === 'added' ? [201] : [200]));

const groupDetail = await requestApi(`/api/v2/landing-line-groups/${encodeURIComponent(lineGroup.group?.id)}`, { accessToken });
const groupBody = parseJson(groupDetail);
checks.push(statusCheck('line group detail can be fetched', groupDetail, 200));
checks.push(check('line group contains two enabled items', groupBody?.enabledItemCount >= 2 && groupBody?.items?.some((item) => item.vendorGatewayId === primary.gateway?.id) && groupBody?.items?.some((item) => item.vendorGatewayId === backup.gateway?.id), `enabledItemCount=${groupBody?.enabledItemCount}, itemCount=${groupBody?.itemCount}`));

const itemIds = groupBody?.items?.map((item) => item.id).reverse() || [];
const reorder = await requestApi(`/api/v2/landing-line-groups/${encodeURIComponent(lineGroup.group?.id)}/items/reorder`, {
  method: 'POST',
  accessToken,
  body: { itemIds },
});
checks.push(statusCheck('line group items can be reordered', reorder, 201));
checks.push(check('reorder preserves item set', parseJson(reorder)?.items?.length === groupBody?.items?.length, `before=${groupBody?.items?.length}, after=${parseJson(reorder)?.items?.length}`));

const duplicateItem = await requestApi(`/api/v2/landing-line-groups/${encodeURIComponent(lineGroup.group?.id)}/items`, {
  method: 'POST',
  accessToken,
  body: { vendorGatewayId: primary.gateway?.id, priority: 99, weight: 1, concurrencyCap: 1 },
});
checks.push(statusCheck('duplicate line group gateway item is rejected', duplicateItem, 409));

const deleteGatewayInGroup = await requestApi(`/api/v2/vendor-gateways/${encodeURIComponent(primary.gateway?.id)}`, { method: 'DELETE', accessToken });
const deleteGatewayInGroupBody = parseJson(deleteGatewayInGroup);
checks.push(statusCheck('vendor gateway referenced by line group cannot be deleted', deleteGatewayInGroup, 400));
checks.push(check('referenced gateway returns VENDOR_GATEWAY_IN_LINE_GROUP', deleteGatewayInGroupBody?.code === 'VENDOR_GATEWAY_IN_LINE_GROUP', `code=${deleteGatewayInGroupBody?.code || 'n/a'}`));

const disableLineGroup = await requestApi(`/api/v2/landing-line-groups/${encodeURIComponent(lineGroup.group?.id)}/disable`, { method: 'POST', accessToken });
checks.push(statusCheck('line group can be disabled', disableLineGroup, 201));
checks.push(check('disabled line group status is DISABLED', parseJson(disableLineGroup)?.status === 'DISABLED', `status=${parseJson(disableLineGroup)?.status}`));

const enableLineGroup = await requestApi(`/api/v2/landing-line-groups/${encodeURIComponent(lineGroup.group?.id)}/enable`, { method: 'POST', accessToken });
checks.push(statusCheck('line group can be enabled', enableLineGroup, 201));
checks.push(check('enabled line group status is ENABLED', parseJson(enableLineGroup)?.status === 'ENABLED', `status=${parseJson(enableLineGroup)?.status}`));

const now = new Date();
const stamp = now.toISOString().replace(/[-:]/g, '').replace(/\..+$/, 'Z');
const reportPath = resolve(reportDir, `REMOTE_VENDORS_LINE_GROUPS_${stamp}.md`);
const failed = checks.filter((item) => !item.pass);
const report = [
  '# Remote Vendors, Vendor Gateways, and Landing Line Groups Test Report',
  '',
  `Date: ${now.toISOString()}`,
  `Base URL: ${baseUrl}`,
  `Username: ${username}`,
  `Low-Privilege Username: ${lowUsername}`,
  `Vendor Name: ${vendorName}`,
  `Line Group Name: ${lineGroupName}`,
  '',
  '| Result | Check | Detail |',
  '| --- | --- | --- |',
  ...checks.map(reportLine),
  '',
  '## Notes',
  '',
  '- Password and token values are intentionally omitted.',
  '- Vendor gateway and line group mutations enqueue config outbox events server-side.',
  '- Config publication manifest is not exposed by the black-box API; DB or Redis observation is required to assert worker publication directly.',
  '',
].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 (failed.length > 0) process.exitCode = 1;