#!/usr/bin/env node
/**
 * E2E: poem page via Goose → simulate link delivery failure → help → Cursor remediate → user gets link.
 *
 * Usage:
 *   node scripts/test-help-poem-page-remediation.mjs
 *   node scripts/test-help-poem-page-remediation.mjs --skip-poem   # reuse latest public html
 *   node scripts/test-help-poem-page-remediation.mjs --direct-remediate  # skip cursor agent wait
 */
import crypto from 'node:crypto';
import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import { setTimeout as sleep } from 'node:timers/promises';
import { spawn } from 'node:child_process';

import { createDbPool, migrateSchema } from '../db.mjs';
import {
  getPageDeliveryContract,
  normalizeDeliveryRelativePath,
  preparePageDeliveryContract,
} from '../mindspace-delivery-contract.mjs';
import {
  HELP_ESCALATION_STATUS,
  createHelpEscalationService,
} from '../help-escalation.mjs';
import { PUBLISH_ROOT_DIR } from '../user-publish.mjs';
import { loadH5Environment } from './load-env.mjs';
import {
  createAgentRun,
  createReporter,
  extractAssistantTexts,
  extractPublicLinks,
  getSession,
  loginViaApi,
  resolvePortalBase,
  snapshotPublicHtml,
  verifyPageAccess,
  waitForAssistantGrowth,
  waitForRunTerminal,
} from './scenario-test-lib.mjs';

const root = path.join(path.dirname(fileURLToPath(import.meta.url)), '..');
loadH5Environment(path.dirname(fileURLToPath(import.meta.url)));

const args = process.argv.slice(2);
const skipPoem = args.includes('--skip-poem');
const directRemediate = args.includes('--direct-remediate');
const noLogin = args.includes('--no-login');
const userIdArg = args.find((item) => item.startsWith('--user-id='))?.slice('--user-id='.length)?.trim() ?? '';
const sessionIdArg = args.find((item) => item.startsWith('--session-id='))?.slice('--session-id='.length)?.trim() ?? '';
const noGoose = args.includes('--no-goose');
const port = Number(
  args.find((item) => item.startsWith('--port='))?.slice('--port='.length)
  ?? process.env.H5_PORT
  ?? 8081,
);
const waitMs = Number(
  args.find((item) => item.startsWith('--wait-ms='))?.slice('--wait-ms='.length)
  ?? process.env.MEMIND_CURSOR_HELP_E2E_WAIT_MS
  ?? 20 * 60 * 1000,
);

const POEM_PAGE_MESSAGE =
  '帮我写一首关于春日的短诗（四段即可），并做成一个精美的 HTML 页面';

async function listLatestHtml(publishKey) {
  const files = await snapshotPublicHtml(publishKey);
  return files.sort((a, b) => b.mtimeMs - a.mtimeMs)[0] ?? null;
}

async function simulateLinkDeliveryFailure(pool, userId, relativePath, requestId) {
  await preparePageDeliveryContract({
    pool,
    userId,
    requestId: requestId ?? `help-e2e-sim-${Date.now()}`,
    relativePath,
    pgRequired: false,
  });
}

async function sendHelpEscalation(baseUrl, cookie, {
  sessionId,
  userId,
  relativePath,
  pageUrl,
}) {
  const helpText = [
    'help 我刚做了春日诗歌 HTML 页面，但聊天里没有收到可打开的页面链接。',
    `会话 ID: ${sessionId}`,
    `页面文件: ${relativePath}`,
    pageUrl ? `预期链接: ${pageUrl}` : '',
    '请修复交付并通过 Goose 原会话把链接补发给我。',
  ].filter(Boolean).join('\n');

  const requestId = crypto.randomUUID();
  const response = await fetch(`${baseUrl}/api/agent/runs`, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      Cookie: cookie,
    },
    body: JSON.stringify({
      session_id: sessionId,
      request_id: requestId,
      user_message: {
        id: crypto.randomUUID(),
        role: 'user',
        content: [{ type: 'text', text: helpText }],
        metadata: { userVisible: true, displayText: helpText },
      },
    }),
  });
  const payload = await response.json().catch(() => ({}));
  if (!response.ok) {
    throw new Error(`help POST failed ${response.status}: ${JSON.stringify(payload)}`);
  }
  return payload;
}

async function waitForEscalation(helpEscalationService, escalationId) {
  const deadline = Date.now() + waitMs;
  while (Date.now() < deadline) {
    const current = await helpEscalationService.getById(escalationId);
    if (
      current?.status === HELP_ESCALATION_STATUS.SUCCEEDED
      || current?.status === HELP_ESCALATION_STATUS.FAILED
    ) {
      return current;
    }
    console.log('[help-e2e] waiting for cursor worker...', {
      id: escalationId,
      status: current?.status ?? 'missing',
    });
    await sleep(3000);
  }
  throw new Error(`Timed out after ${waitMs}ms waiting for escalation ${escalationId}`);
}

async function runDirectRemediation({ userId, sessionId, relativePath, port: remediatePort, viaGoose }) {
  const cliArgs = [
    path.join(root, 'scripts/help-remediate-page-delivery.mjs'),
    `--user-id=${userId}`,
    `--page=${relativePath}`,
    `--port=${remediatePort}`,
  ];
  if (sessionId) cliArgs.push(`--session-id=${sessionId}`);
  if (viaGoose) cliArgs.push('--via-goose');

  return await new Promise((resolve, reject) => {
    const child = spawn(process.execPath, cliArgs, {
      cwd: root,
      stdio: ['ignore', 'pipe', 'pipe'],
      env: process.env,
    });
    let stdout = '';
    let stderr = '';
    child.stdout.on('data', (chunk) => {
      stdout += String(chunk);
    });
    child.stderr.on('data', (chunk) => {
      stderr += String(chunk);
    });
    child.on('error', reject);
    child.on('close', (code) => {
      if (code !== 0) {
        reject(new Error(stderr.trim() || stdout.trim() || `remediation exited ${code}`));
        return;
      }
      try {
        const jsonLine = stdout.trim().split('\n').reverse().find((line) => line.startsWith('{'));
        resolve(jsonLine ? JSON.parse(jsonLine) : { stdout });
      } catch {
        resolve({ stdout });
      }
    });
  });
}

async function fetchLatestHelpNotification(pool, userId) {
  const [rows] = await pool.query(
    `SELECT id, title, body, notification_type, created_at
     FROM h5_user_notifications
     WHERE user_id = ? AND notification_type = 'help_escalation_result'
     ORDER BY created_at DESC
     LIMIT 1`,
    [userId],
  );
  return rows[0] ?? null;
}

async function main() {
  const reporter = createReporter();
  const baseUrl = resolvePortalBase(port);
  const account = {
    username: process.env.RELEASE_GATE_SCENARIO_USERNAME ?? 'john',
    password: process.env.JOHN_PASSWORD ?? process.env.H5_ACCESS_PASSWORD ?? '888888',
  };

  console.log('==> Help 诗歌页面补救 E2E');
  console.log(`    Portal: ${baseUrl}`);
  console.log(`    directRemediate: ${directRemediate}`);
  console.log(`    skipPoem: ${skipPoem}`);
  console.log(`    noLogin: ${noLogin}\n`);

  const statusResponse = await fetch(`${baseUrl}/auth/status`);
  if (!statusResponse.ok) {
    throw new Error(`Portal 未就绪: ${statusResponse.status}`);
  }

  let auth = null;
  let userId = userIdArg;
  let publishKey = userIdArg || account.username;

  if (noLogin) {
    if (!userIdArg) {
      throw new Error('--no-login 需要同时提供 --user-id=');
    }
    if (!skipPoem) {
      throw new Error('--no-login 仅支持 --skip-poem（阶段 1 仍需 HTTP 登录）');
    }
    reporter.pass('鉴权', `no-login / user-id=${userIdArg}`);
  } else {
    auth = await loginViaApi(baseUrl, account, reporter);
    userId = auth.user?.id;
    publishKey = userId ?? account.username;
    if (!userId) {
      throw new Error('登录后缺少 userId');
    }
  }

  let sessionId = sessionIdArg || null;
  let relativePath = null;
  let replyCombined = '';
  let htmlBefore = [];

  if (!skipPoem) {
    htmlBefore = await snapshotPublicHtml(publishKey);
    console.log('\n--- 阶段 1: Goose 写诗并做页面 ---');
    const run = await createAgentRun(baseUrl, auth.cookie, {
      message: POEM_PAGE_MESSAGE,
      sessionId: null,
    });
    if (run.kind === 'help_escalation') {
      throw new Error(`意外进入 help 分支: ${run.message}`);
    }
    reporter.pass('提交写诗做页', POEM_PAGE_MESSAGE.slice(0, 40));

    const terminal = await waitForRunTerminal(
      baseUrl,
      auth.cookie,
      run.runId,
      600_000,
    );
    sessionId = terminal.sessionId ?? terminal.agent_session_id ?? run.sessionId ?? null;
    if (terminal.status === 'failed') {
      reporter.fail('Goose run', terminal.error ?? 'failed');
      process.exit(reporter.summary());
    }
    reporter.pass('Goose run 终态', terminal.status);

    if (!sessionId) {
      reporter.fail('sessionId', 'run 未回填 sessionId');
      process.exit(reporter.summary());
    }

    const reply = await waitForAssistantGrowth(baseUrl, auth.cookie, sessionId, {
      previousCount: 0,
      previousCombinedLength: 0,
      minChars: 20,
      timeoutMs: 120_000,
    });
    if (!reply) {
      reporter.fail('assistant 回复', '超时');
      process.exit(reporter.summary());
    }
    replyCombined = reply.combined;
    reporter.pass('assistant 回复', `${reply.combined.length} 字`);
    console.log(reply.combined.slice(0, 500));

    const htmlAfter = await snapshotPublicHtml(publishKey);
    const beforeSet = new Set(htmlBefore.map((item) => item.fullPath));
    const fresh = htmlAfter
      .filter((item) => !beforeSet.has(item.fullPath))
      .sort((a, b) => b.mtimeMs - a.mtimeMs);
    if (!fresh[0]) {
      reporter.fail('页面落盘', 'public/ 无新 HTML');
      process.exit(reporter.summary());
    }
    relativePath = fresh[0].relativePublicPath;
    reporter.pass('页面落盘', relativePath);
  } else {
    const latest = await listLatestHtml(publishKey);
    if (!latest) {
      throw new Error('--skip-poem 但 public/ 无 HTML，请先跑完整流程');
    }
    relativePath = latest.relativePublicPath;
    if (!sessionId && auth?.cookie) {
      const sessionsResponse = await fetch(`${baseUrl}/api/sessions?limit=5`, {
        headers: { Cookie: auth.cookie },
      });
      const sessionsPayload = await sessionsResponse.json().catch(() => ({}));
      sessionId = sessionsPayload?.sessions?.[0]?.id ?? null;
    }
    reporter.pass('复用最新页面', `${relativePath} / session ${sessionId ?? '无'}`);
  }

  relativePath = normalizeDeliveryRelativePath(relativePath);
  if (!relativePath) {
    throw new Error(`无效页面路径: ${relativePath}`);
  }

  console.log('\n--- 阶段 2: 模拟「链接未送达」---');
  const pool = createDbPool();
  await migrateSchema(pool);
  await simulateLinkDeliveryFailure(pool, userId, relativePath, `help-e2e-${Date.now()}`);
  const stuckContract = await getPageDeliveryContract({ pool, userId, relativePath });
  if (stuckContract?.status === 'preparing') {
    reporter.pass('模拟交付失败', `contract=${stuckContract.status}`);
  } else {
    reporter.fail('模拟交付失败', `contract=${stuckContract?.status ?? 'missing'}`);
  }

  const linksBeforeHelp = extractPublicLinks(replyCombined, baseUrl);
  if (linksBeforeHelp.length) {
    reporter.pass('原始回复含链接', '仍模拟用户未收到，继续 help 补救');
  } else {
    reporter.pass('原始回复无链接', '符合链接发送失败场景');
  }

  console.log('\n--- 阶段 3: 用户发送 help ---');
  let escalationId = null;
  if (noLogin) {
    const helpEscalationService = createHelpEscalationService({ pool });
    const helpText = [
      'help 我刚做了诗歌 HTML 页面，但聊天里没有收到可打开的页面链接。',
      sessionId ? `会话 ID: ${sessionId}` : '',
      `页面文件: ${relativePath}`,
      '请修复交付并通过 Goose 原会话把链接补发给我。',
    ].filter(Boolean).join('\n');
    const escalation = await helpEscalationService.enqueue({
      userId,
      channel: 'h5',
      userText: helpText,
      context: {
        origin: 'help-e2e-no-login',
        sessionId,
        requestId: `help-e2e-${Date.now()}`,
      },
      agentSessionId: sessionId,
    });
    escalationId = escalation.id;
    reporter.pass('help 入队 (DB)', escalationId);
  } else {
    const helpPayload = await sendHelpEscalation(baseUrl, auth.cookie, {
      sessionId,
      userId,
      relativePath,
      pageUrl: linksBeforeHelp[0] ?? null,
    });
    if (helpPayload.needs_details) {
      reporter.fail('help 入队', `被判定缺少问题描述: ${helpPayload.message}`);
      process.exit(reporter.summary());
    }
    if (!helpPayload.help_escalation || !helpPayload.escalation_id) {
      reporter.fail('help 入队', JSON.stringify(helpPayload));
      process.exit(reporter.summary());
    }
    escalationId = helpPayload.escalation_id;
    reporter.pass('help 入队', escalationId);
  }

  console.log('\n--- 阶段 4: Cursor 接管补救 ---');
  let escalation = null;
  if (directRemediate || noLogin) {
    reporter.pass('补救模式', directRemediate ? 'direct-remediate' : 'no-login auto-remediate');
    const remediateResult = await runDirectRemediation({
      userId,
      sessionId,
      relativePath,
      port,
      viaGoose: !noGoose && Boolean(sessionId && auth?.cookie),
    });
    console.log(remediateResult);
    const helpEscalationService = createHelpEscalationService({ pool });
    await helpEscalationService.complete(escalationId, {
      status: HELP_ESCALATION_STATUS.SUCCEEDED,
      resultText: remediateResult.userMessage ?? '页面链接已补发',
      agentOutput: JSON.stringify(remediateResult),
      errorMessage: null,
    });
    escalation = await helpEscalationService.getById(escalationId);
  } else {
    const helpEscalationService = createHelpEscalationService({ pool });
    escalation = await waitForEscalation(helpEscalationService, escalationId);
  }

  if (escalation?.status !== HELP_ESCALATION_STATUS.SUCCEEDED) {
    reporter.fail('Cursor 工单', escalation?.errorMessage ?? escalation?.status ?? 'failed');
    console.log(escalation?.agentOutput?.slice?.(0, 800) ?? '');
    process.exit(reporter.summary());
  }
  reporter.pass('Cursor 工单', escalation.resultText?.slice(0, 80) ?? 'succeeded');

  console.log('\n--- 阶段 5: 验收 ---');
  const readyContract = await getPageDeliveryContract({ pool, userId, relativePath });
  if (readyContract?.status === 'ready') {
    reporter.pass('delivery contract', 'ready');
  } else {
    reporter.fail('delivery contract', readyContract?.status ?? 'missing');
  }

  const notification = await fetchLatestHelpNotification(pool, userId);
  if (notification?.body?.includes('MindSpace') || notification?.body?.includes('.html')) {
    reporter.pass('Web 通知', notification.title ?? notification.id);
  } else {
    reporter.fail('Web 通知', '未找到含页面链接的通知');
  }

  if (sessionId && auth?.cookie) {
    const sessionAfter = await getSession(baseUrl, auth.cookie, sessionId);
    const texts = sessionAfter.ok ? extractAssistantTexts(sessionAfter.session) : [];
    const combined = texts.join('\n');
    const linksAfter = extractPublicLinks(combined, baseUrl);
    if (linksAfter.some((url) => url.includes(relativePath.replace(/^public\//, '')))) {
      reporter.pass('Goose 会话链接', '会话中已出现页面链接');
    } else if (directRemediate) {
      reporter.fail('Goose 会话链接', 'direct 模式下应通过 --via-goose 写回会话');
    } else {
      reporter.pass('Goose 会话链接', '依赖 Cursor 脚本；若缺失请检查 agent 是否执行 help-remediate');
    }
  }

  const pageHtml = fs.readFileSync(
    path.join(root, PUBLISH_ROOT_DIR, publishKey, relativePath),
    'utf8',
  );
  const pageKeyword = pageHtml.includes('春') ? '春' : (pageHtml.match(/[\u4e00-\u9fff]{2,4}/u)?.[0] ?? 'html');

  await verifyPageAccess({
    baseUrl,
    cookie: auth?.cookie ?? '',
    publishKey,
    replyText: escalation.resultText ?? '',
    htmlBefore: [],
    expect: {
      keywords: [pageKeyword],
      requirePublicLink: true,
      requireHttp200: true,
    },
    reporter,
  });

  await pool.end();
  process.exit(reporter.summary());
}

main().catch((error) => {
  console.error(error instanceof Error ? error.stack ?? error.message : error);
  process.exit(1);
});