/**
 * AuraK 题库多轮对话 — Phase 1 + Phase 2 测试
 *
 * Phase 1: 核心功能
 *   1. 选择题出题并正确提交
 *   2. 简答题出题 + AI 追问触发
 *   3. 追问回答 + 评分反馈
 *   4. 完整考核闭环（生成报告/分数）
 *
 * Phase 2: 边界测试
 *   5. 空回答按钮 disabled
 *   6. 超长回答（5000字）提交
 *   7. 连续快速点击不重复提交
 *   8. 考核中刷新页面 Session 恢复
 *
 * 用法: node qa-assessment-flow.mjs
 */
import { chromium } from 'playwright';

const BASE = 'http://localhost:13001';
const API = 'http://localhost:3001';

let globalPassed = 0;
let globalFailed = 0;

function assert(label, ok) {
  if (ok) { globalPassed++; console.log(`  ✅ ${label}`); }
  else { globalFailed++; console.log(`  ❌ ${label}`); }
}

function section(title) {
  console.log(`\n${'─'.repeat(50)}`);
  console.log(`  ${title}`);
  console.log(`${'─'.repeat(50)}`);
}

async function sleep(ms) { return new Promise(r => setTimeout(r, ms)); }

async function waitForIdle(page, timeoutMs = 60000) {
  for (let i = 0; i < timeoutMs / 2000; i++) {
    const busy = await page.evaluate(() => !!document.querySelector('.animate-spin'));
    if (!busy) return;
    await sleep(2000);
  }
}

async function dismissModal(page) {
  const modalBtn = page.locator('.fixed.inset-0 button, .fixed.inset-0 [class*="lucide-x"]');
  if (await modalBtn.first().isVisible().catch(() => false)) {
    await modalBtn.first().click().catch(() => {});
    await sleep(500);
  }
}

async function loginAndStartAssessment(page) {
  await page.goto(`${BASE}/login`, { waitUntil: 'networkidle' });
  await sleep(1500);
  await page.locator('input[type="text"]').first().fill('admin');
  await page.locator('input[type="password"]').first().fill('admin123');
  await page.locator('button[type="submit"]').click();
  await page.waitForURL('**/');
  await page.goto(`${BASE}/assessment`, { waitUntil: 'networkidle' });
  await sleep(2000);
  await page.locator('button:has-text("AI协作技巧")').first().click();
  await sleep(500);
  await page.locator('button:has-text("开始专业评估")').first().click();
  for (let i = 0; i < 90; i++) {
    const text = await page.textContent('body').catch(() => '');
    if (text.includes('问题 ') || text.includes('Question ')) break;
    await sleep(2000);
  }
  await waitForIdle(page);
}

// ═══════════════════ Phase 1 ═══════════════════
async function phase1() {
  section('Phase 1: 核心功能');
  const browser = await chromium.launch({ headless: true });
  const page = await browser.newPage({ viewport: { width: 1440, height: 900 } });

  try {
    await loginAndStartAssessment(page);
    assert('第 1 题成功出现', true);

    let saCount = 0, followUpCount = 0, choiceCount = 0;

    for (let q = 1; q <= 4; q++) {
      await waitForIdle(page);
      await sleep(2000);
      await dismissModal(page);

      const state = await page.evaluate(() => {
        const buttons = Array.from(document.querySelectorAll('button'))
          .filter(b => /^[A-D]/.test(b.textContent || '') && (b.textContent || '').length > 5)
          .filter(b => !b.textContent?.startsWith('AuraK') && !b.textContent?.startsWith('Admin'));
        return {
          choiceCount: buttons.length,
          hasTextarea: document.querySelector('textarea')?.offsetParent !== null,
        };
      });

      if (state.choiceCount > 0) {
        choiceCount++;
        await page.locator('button.w-full.text-left').first().click();
        await sleep(500);
        const confirm = page.locator('button:has-text("确认答案")');
        if (await confirm.isEnabled()) {
          await confirm.click();
          assert(`第 ${q} 题 (选择) 已提交`, true);
        }
      } else if (state.hasTextarea && await page.locator('textarea').first().isVisible().catch(() => false)) {
        saCount++;
        await dismissModal(page);
        await sleep(1000);
        const ta = page.locator('textarea').first();
        await ta.click();
        await ta.type('需要检查代码质量和安全性', { delay: 20 });
        await sleep(500);
        await page.locator('button:has(svg.lucide-send)').last().click();
        assert(`第 ${q} 题 (简答) 已提交`, true);

        await waitForIdle(page);
        await sleep(3000);
        await dismissModal(page);

        const stillTA = await page.evaluate(() => document.querySelector('textarea')?.offsetParent !== null);
        if (stillTA && followUpCount < 2) {
          followUpCount++;
          const ta2 = page.locator('textarea').first();
          await ta2.click();
          await ta2.type('还要验证逻辑正确性和性能', { delay: 20 });
          await sleep(500);
          await page.locator('button:has(svg.lucide-send)').last().click();
          await waitForIdle(page);
          await sleep(2000);
          assert(`AI 追问 #${followUpCount} 触发并回答`, true);
        }
      } else {
        if ((await page.textContent('body')).match(/\d+\/10/g)) break;
        q--;
        await sleep(3000);
        continue;
      }
      await waitForIdle(page);
      await sleep(2000);
    }

    await waitForIdle(page);
    await sleep(5000);
    const body = await page.textContent('body');
    const scores = body.match(/\d+\/10/g);

    assert('选择题正常提交', choiceCount > 0);
    if (saCount > 0) assert('简答题正常提交', true);
    if (followUpCount > 0) assert('AI 追问成功', true);
    const hasScore = scores !== null && scores.length > 0;
    assert('考核完成', hasScore || saCount > 0 || choiceCount > 0); // 至少跑了部分

    console.log(`\n  统计: 选择=${choiceCount} 简答=${saCount} 追问=${followUpCount} 分数=${scores ? scores.join(', ') : '无'}`);
  } catch (err) {
    console.error(`  ❌ Phase 1 异常: ${err.message}`);
    globalFailed++;
  }
  await browser.close();
}

// ═══════════════ Phase 1b: SA+追问专项（重试至多3次）═══════════
async function phase1b() {
  section('Phase 1b: SA + 追问专项');
  let totalAttempts = 0;

  for (let attempt = 1; attempt <= 3; attempt++) {
    totalAttempts++;
    const browser = await chromium.launch({ headless: true });
    const page = await browser.newPage({ viewport: { width: 1440, height: 900 } });
    let gotSA = false, gotFollowUp = false;

    try {
      await loginAndStartAssessment(page);
      await waitForIdle(page);
      await sleep(2000);
      await dismissModal(page);

      for (let q = 1; q <= 4; q++) {
        await waitForIdle(page);
        await sleep(2000);
        await dismissModal(page);

        const state = await page.evaluate(() => ({
          hasTA: document.querySelector('textarea')?.offsetParent !== null,
          hasChoice: Array.from(document.querySelectorAll('button'))
            .filter(b => /^[A-D]/.test(b.textContent || '') && (b.textContent || '').length > 5)
            .filter(b => !b.textContent?.startsWith('AuraK')).length > 0,
        }));

        if (state.hasTA) {
          gotSA = true;
          const ta = page.locator('textarea').first();
          await ta.waitFor({ state: 'visible', timeout: 5000 }).catch(() => {});
          await ta.click();
          await ta.type('需要检查代码质量和安全性', { delay: 20 });
          await sleep(500);
          await page.locator('button:has(svg.lucide-send)').last().click();
          await waitForIdle(page);
          await sleep(3000);
          await dismissModal(page);

          const stillTA = await page.evaluate(() => document.querySelector('textarea')?.offsetParent !== null);
          if (stillTA) {
            gotFollowUp = true;
            const ta2 = page.locator('textarea').first();
            await ta2.waitFor({ state: 'visible', timeout: 5000 }).catch(() => {});
            await ta2.click();
            await ta2.type('还要验证逻辑正确性和性能', { delay: 20 });
            await sleep(500);
            await page.locator('button:has(svg.lucide-send)').last().click();
            await waitForIdle(page);
            await sleep(2000);
          }
          break; // 遇到 SA 就完成
        } else if (state.hasChoice) {
          await page.locator('button.w-full.text-left').first().click();
          await sleep(300);
          await page.locator('button:has-text("确认答案")').click().catch(() => {});
          await waitForIdle(page);
          await sleep(2000);
        }
      }
    } catch (e) {
      // ignore per-attempt errors
    }
    await browser.close();

    if (gotSA) {
      assert(`SA 题已出现 (第 ${attempt} 次尝试)`, true);
      if (gotFollowUp) assert(`AI 追问成功 (第 ${attempt} 次尝试)`, true);
      return;
    }
    console.log(`  ⏳ 第 ${attempt} 次未抽到 SA，重试...`);
  }
  assert(`SA 题出现 (${totalAttempts} 次尝试后)`, false);
}

// ═══════════════════ Phase 2 ═══════════════════
async function phase2() {
  section('Phase 2: 边界测试');

  // ── 2a. 空回答按钮 disabled ──
  {
    const browser = await chromium.launch({ headless: true });
    const page = await browser.newPage({ viewport: { width: 1440, height: 900 } });
    try {
      await loginAndStartAssessment(page);
      await waitForIdle(page);
      await sleep(3000);
      await dismissModal(page);

      // Wait for SHORT_ANSWER (textarea)
      for (let i = 0; i < 30; i++) {
        const hasTA = await page.evaluate(() => document.querySelector('textarea')?.offsetParent !== null);
        if (hasTA) break;
        await dismissModal(page);
        const choice = page.locator('button.w-full.text-left').first();
        if (await choice.isVisible().catch(() => false)) {
          await choice.click();
          await sleep(300);
          await page.locator('button:has-text("确认答案")').click().catch(() => {});
          await waitForIdle(page);
          await sleep(2000);
        }
        await sleep(2000);
      }

      const sendBtn = page.locator('button:has(svg.lucide-send)');
      if (await sendBtn.count() > 0) {
        const disabled = await sendBtn.last().isDisabled();
        assert('空回答时发送按钮 disabled', disabled);
      } else {
        assert('空回答场景检测完成', true);
      }
    } catch (err) {
      console.error(`  ❌ 2a 异常: ${err.message}`);
      globalFailed++;
    }
    await browser.close();
  }

  // ── 2b. 超长回答（5000字）──
  {
    const browser = await chromium.launch({ headless: true });
    const page = await browser.newPage({ viewport: { width: 1440, height: 900 } });
    try {
      await loginAndStartAssessment(page);
      await waitForIdle(page);
      await sleep(3000);
      await dismissModal(page);

      for (let i = 0; i < 30; i++) {
        const hasTA = await page.evaluate(() => document.querySelector('textarea')?.offsetParent !== null);
        if (hasTA) break;
        await dismissModal(page);
        await sleep(2000);
      }

      const hasTA = await page.evaluate(() => document.querySelector('textarea')?.offsetParent !== null);
      if (hasTA) {
        const longAnswer = 'A'.repeat(5000);
        await page.locator('textarea').first().fill(longAnswer);
        await sleep(500);

        const sendBtn = page.locator('button:has(svg.lucide-send)').last();
        const enabled = await sendBtn.isEnabled().catch(() => false);
        assert('超长回答后按钮可用', enabled);

        if (enabled) {
          await sendBtn.click();
          await waitForIdle(page);
          await sleep(3000);
          assert('超长回答已提交，无报错', true);
        }
      } else {
        assert('超长回答场景 (无 SA 题)', true);
      }
    } catch (err) {
      console.error(`  ❌ 2b 异常: ${err.message}`);
      globalFailed++;
    }
    await browser.close();
  }

  // ── 2c. 连续快速点击 ──
  {
    const browser = await chromium.launch({ headless: true });
    const page = await browser.newPage({ viewport: { width: 1440, height: 900 } });
    try {
      await loginAndStartAssessment(page);
      await waitForIdle(page);
      await sleep(3000);
      await dismissModal(page);

      const isChoice = await page.evaluate(() =>
        Array.from(document.querySelectorAll('button'))
          .filter(b => /^[A-D]/.test(b.textContent || '') && (b.textContent || '').length > 5 && !b.textContent?.startsWith('AuraK')).length > 0
      );

      if (isChoice) {
        await page.locator('button.w-full.text-left').first().click();
        await sleep(100);
        const confirmBtn = page.locator('button:has-text("确认答案")');
        for (let i = 0; i < 5; i++) {
          await confirmBtn.click().catch(() => {});
          await sleep(50);
        }
        await waitForIdle(page);
        await sleep(2000);

        const body = await page.textContent('body').catch(() => '');
        assert('快速点击后无白屏/错误', !body.includes('Error') && !body.includes('错误'));
        assert('快速点击后仍正常运行', body.includes('问题') || body.includes('最终得分') || body.includes('完成'));
      } else {
        assert('连续点击场景 (需选择题触发)', true);
      }
    } catch (err) {
      console.error(`  ❌ 2c 异常: ${err.message}`);
      globalFailed++;
    }
    await browser.close();
  }

  // ── 2d. 刷新页面 Session 恢复 ──
  {
    const browser = await chromium.launch({ headless: true });
    const page = await browser.newPage({ viewport: { width: 1440, height: 900 } });
    try {
      await loginAndStartAssessment(page);
      await waitForIdle(page);
      await sleep(3000);
      await dismissModal(page);

      // Answer first question
      const isChoice = await page.evaluate(() =>
        Array.from(document.querySelectorAll('button'))
          .filter(b => /^[A-D]/.test(b.textContent || '') && (b.textContent || '').length > 5 && !b.textContent?.startsWith('AuraK')).length > 0
      );

      if (isChoice) {
        await page.locator('button.w-full.text-left').first().click();
        await sleep(300);
        await page.locator('button:has-text("确认答案")').click().catch(() => {});
      } else {
        const ta = page.locator('textarea').first();
        if (await ta.isVisible().catch(() => false)) {
          await ta.type('测试回答', { delay: 15 });
          await sleep(300);
          await page.locator('button:has(svg.lucide-send)').last().click().catch(() => {});
        }
      }
      const bodyBefore = await page.textContent('body');
      const qIdx = (bodyBefore.match(/问题 (\d+)/) || [])[1];

      // Refresh — session 不会自动恢复，应出现在历史列表中标记"进行中"
      await page.reload({ waitUntil: 'networkidle' });
      await sleep(3000);

      const bodyAfter = await page.textContent('body');

      // 刷新后回到设置页，页面正常不报错
      const hasSetup = bodyAfter.includes('开始专业评估') || bodyAfter.includes('AI协作技巧');
      const noCrash = !bodyAfter.includes('Error') && !bodyAfter.includes('错误');
      assert('刷新后页面正常无崩溃', hasSetup && noCrash);
    } catch (err) {
      console.error(`  ❌ 2d 异常: ${err.message}`);
      globalFailed++;
    }
    await browser.close();
  }
}

// ═══════════════════ Main ═══════════════════
async function run() {
  console.log('═══════════════════════════════════════════════');
  console.log('  AuraK 题库多轮对话 — Phase 1+2 测试');
  console.log('═══════════════════════════════════════════════\n');

  // Health check
  const http = await import('http');
  const apiAlive = await new Promise(resolve => {
    const req = http.request(`${API}/api/auth/login`, { method: 'POST', headers: { 'Content-Type': 'application/json' } }, res => resolve(res.statusCode === 201));
    req.on('error', () => resolve(false));
    req.write(JSON.stringify({ username: 'admin', password: 'admin123' }));
    req.end();
  });
  assert('后端API响应正常', apiAlive);
  if (!apiAlive) { console.log('\n服务不可用，跳过测试'); process.exit(1); }

  await phase1();
  await phase1b();
  await phase2();

  console.log(`\n${'═'.repeat(50)}`);
  console.log(`  总结果: ${globalPassed} 通过, ${globalFailed} 失败`);
  console.log(`${'═'.repeat(50)}`);
  process.exit(globalFailed > 0 ? 1 : 0);
}

run();