import fs from 'node:fs';
import assert from 'node:assert/strict';
import {chromium, expect} from '@playwright/test';
import {login} from './role-permissions-live.mjs';
import videoManifest from '../../unreal_tran_web/src/features/virtual-training-scripts/narration-video-manifest.js';

const dir='reports/bridge-introduction-layout-20260920';
fs.mkdirSync(dir,{recursive:true});
const signed=await login('root'), checks=[], errors=[], writes=[];
const browser=await chromium.launch({channel:'msedge',headless:true,args:['--enable-unsafe-swiftshader']});
const page=await browser.newPage({viewport:{width:1920,height:1080}});
await page.addInitScript(s=>{
  sessionStorage.setItem('unreal-tran:web:access-token:v1',s.accessToken);
  sessionStorage.setItem('unreal-tran:web:refresh-token:v1',s.refreshToken);
  localStorage.setItem('unreal-tran:web:preferences:v1',JSON.stringify({themeMode:'light'}));
},signed);
await page.route(/\/src\/features\/virtual-training-legacy\/upstream\/views\/training\.js(?:\?|$)/,async route=>{
  const response=await route.fetch();
  await route.fulfill({response,body:await response.text()+'\nglobalThis.introLayoutState=()=>activeTraining?{step:activeTraining.session.stepIndex,completed:[...activeTraining.session.completed]}:null;'});
});
page.on('pageerror',e=>errors.push(e.message));
page.on('request',r=>{if(r.url().includes('/api/tran/')&&!['GET','HEAD'].includes(r.method()))writes.push(new URL(r.url()).pathname);});
const state=()=>page.evaluate(()=>globalThis.introLayoutState?.());
const overlay=page.locator('.training-introduction');
try {
  for(const [id,pages,steps] of [[86,6,5],[87,3,7],[88,1,11],[89,1,16]]) {
    await page.goto(`http://127.0.0.1:6180/teaching/virtual-training/preview/${id}`);
    await expect(overlay).toBeVisible({timeout:120000});
    await expect(page.locator('[data-intro-page]')).toHaveCount(pages);
    await expect(page.locator('[data-step-index]')).toHaveCount(steps);
    await expect(page.locator('[data-role="step-count"]')).toHaveText(`1 / ${pages+steps}`);
    await expect.poll(()=>overlay.locator('img').evaluateAll(images=>images.every(i=>i.complete&&i.naturalWidth>0)),{timeout:30000}).toBe(true);
    const original=await state(), writeCount=writes.length;
    await page.screenshot({path:`${dir}/${id}-desktop.png`});
    for(const viewport of [{width:1366,height:768},{width:1280,height:720}]) {
      await page.setViewportSize(viewport);
      const layout=await page.evaluate(()=>{
        const scroller=document.querySelector('.training-sequence-scroll');
        const root=document.querySelector('[data-role="steps"]');
        const content=document.querySelector('.training-introduction-content');
        const image=document.querySelector('.introduction-visual'),text=document.querySelector('.introduction-reading');
        const before=scroller.querySelector('[data-intro-page]').getBoundingClientRect().top;
        scroller.scrollTop=scroller.scrollHeight;
        return {scrollable:scroller.scrollHeight>scroller.clientHeight,
          introMoves:scroller.querySelector('[data-intro-page]').getBoundingClientRect().top<before,
          stepsOverflow:getComputedStyle(root).overflowY,
          horizontalOverflow:content.scrollWidth>content.clientWidth,
          imageTextOverlap:image&&text?image.getBoundingClientRect().right>text.getBoundingClientRect().left:false};
      });
      assert.ok(layout.scrollable);assert.ok(layout.introMoves);
      assert.equal(layout.stepsOverflow,'visible');assert.equal(layout.horizontalOverflow,false);assert.equal(layout.imageTextOverlap,false);
      await expect(page.locator('[data-step-index]').last()).toBeInViewport();
      await expect(overlay.locator('[data-intro-command="skip"]')).toBeInViewport();
      await expect(overlay.locator('[data-intro-command="next"]')).toBeInViewport();
      await page.locator('.training-sequence-scroll').evaluate(el=>el.scrollTop=0);
      await page.screenshot({path:`${dir}/${id}-${viewport.width}.png`});
      checks.push({id,viewport,...layout});
    }
    for(let i=1;i<pages;i++) {
      await overlay.locator('[data-intro-command="next"]').click();
      await expect(page.locator(`[data-intro-page="${i}"]`)).toHaveAttribute('aria-current','page');
      assert.deepEqual(await state(),original);
    }
    if(pages>1)await page.screenshot({path:`${dir}/${id}-lecture.png`});
    await overlay.locator('[data-intro-command="next"]').click();
    await expect(overlay).toBeHidden();
    assert.deepEqual(await state(),original);
    await expect(page.locator('[data-step-index="0"]')).toBeInViewport();
    await page.locator('[data-intro-page="0"]').click();
    await expect(overlay).toBeVisible();
    await overlay.locator('[data-intro-command="skip"]').click();
    await expect(overlay).toBeHidden();assert.deepEqual(await state(),original);
    assert.equal(writes.length,writeCount);
    await page.setViewportSize({width:1920,height:1080});
    console.log('PASS task',id);
  }
  // Browser-only response fixture validates optional media without changing any saved task.
  await page.route(/\/api\/tran\/v1\/teaching\/assignments\/86$/,async route=>{
    const response=await route.fetch(),body=await response.json();
    body.data.definitionSnapshot.introduction={background:{enabled:true,title:'纯文字背景',body:'没有背景图时，正文保持居中阅读。\n讲解切换不推进操作步骤。'},lectures:[{id:'video-check',title:'视频讲解',format:'video',videoUrl:videoManifest.scripts[0].steps[0].url}]};
    await route.fulfill({response,json:body});
  });
  await page.goto('http://127.0.0.1:6180/teaching/virtual-training/preview/86');
  await expect(overlay).toBeVisible({timeout:120000});
  await expect(overlay.locator('.is-text-only')).toBeVisible();
  await expect(overlay.locator('.introduction-reading p')).toHaveCount(2);
  await page.screenshot({path:`${dir}/text-only.png`});
  await overlay.locator('[data-intro-command="next"]').click();
  const video=overlay.locator('video');await expect(video).toBeVisible();
  await video.evaluate(el=>el.play());
  await expect.poll(()=>video.evaluate(el=>el.currentTime),{timeout:30000}).toBeGreaterThan(0);
  await page.screenshot({path:`${dir}/video.png`});
  await page.evaluate(()=>globalThis.previousIntroVideo=document.querySelector('.training-introduction video'));
  await overlay.locator('[data-intro-command="skip"]').click();
  assert.equal(await page.evaluate(()=>globalThis.previousIntroVideo.paused&&!globalThis.previousIntroVideo.getAttribute('src')),true);
  checks.push({optionalTextAndVideo:true,videoStopsOnSkip:true});
  await page.unroute(/\/api\/tran\/v1\/teaching\/assignments\/86$/);
  await page.goto('http://127.0.0.1:6180/teaching/virtual-training/preview/86');
  await expect(overlay).toBeVisible({timeout:120000});
  await expect.poll(()=>overlay.locator('img').evaluateAll(images=>images.every(i=>i.complete&&i.naturalWidth>0))).toBe(true);
  for(const mode of ['dark','military']) {
    await page.evaluate(mode=>{document.documentElement.classList.toggle('dark',mode==='dark');document.documentElement.dataset.colorTheme=mode;document.documentElement.dataset.theme=mode==='dark'?'dark':'light';},mode);
    await page.screenshot({path:`${dir}/theme-${mode}.png`});
  }
  const lan=await page.request.get('http://192.168.31.168:6180/api/auth/v1/system-config/public');
  assert.equal(lan.status(),200);checks.push({lanGatewayProxy:true});
  assert.deepEqual(errors,[]);
  fs.writeFileSync(`${dir}/result.json`,JSON.stringify({pass:true,checks,errors,writes,accountType:'internal maintenance preview',testDataCreated:false},null,2));
  fs.writeFileSync(`${dir}/index.html`,`<!doctype html><html lang="zh-CN"><meta charset="utf-8"><title>背景讲解布局验收</title><style>body{font:16px system-ui;margin:32px;background:#eff5f3;color:#16463e}img{width:100%;border:1px solid #bed5d0;border-radius:8px}section{margin:24px 0}a{color:#078773}</style><h1>背景讲解布局验收</h1><p>四个任务通过：统一滚动、图文分栏、小屏布局、翻页与跳过；操作进度保持不变。未写入任务数据。</p>${[86,87,88,89].map((id,i)=>`<section><h2>TASK-VIRTUAL-00${i+5}</h2><a href="${id}-desktop.png">桌面截图</a> · <a href="${id}-1280.png">1280 × 720</a><img src="${id}-1366.png"></section>`).join('')}</html>`);
} catch(error) {
  await page.screenshot({path:`${dir}/failure.png`});
  fs.writeFileSync(`${dir}/failure.json`,JSON.stringify({error:error.stack,errors},null,2));
  throw error;
} finally {await browser.close();}