import puppeteer from 'puppeteer';
import sharp from 'sharp';
const b = await puppeteer.launch({ args:['--no-sandbox','--disable-setuid-sandbox','--use-gl=angle','--enable-unsafe-swiftshader','--ignore-gpu-blocklist'] });
const p = await b.newPage();
await p.setViewport({width:1100,height:1300});
await p.goto('http://10.200.201.3:4175/_lab/neu-card.html',{waitUntil:'load',timeout:60000});
await new Promise(r=>setTimeout(r,1200));
const top = await p.evaluate(()=>{ const r=document.querySelector('[data-shader-demo]').getBoundingClientRect(); return r.top+window.scrollY; });
await p.evaluate((t)=>window.scrollTo(0, t-150), top);
await new Promise(r=>setTimeout(r,800));
await p.screenshot({path:'/tmp/sec.png'});
const rect = await p.evaluate(()=>{ const r=document.querySelector('[data-shader-demo]').getBoundingClientRect(); return {x:r.x,y:r.y,w:r.width,h:r.height}; });
const {data,info}=await sharp('/tmp/sec.png').raw().toBuffer({resolveWithObject:true});
const x0=Math.floor(rect.x), y0=Math.floor(rect.y), x1=Math.floor(rect.x+rect.w), y1=Math.floor(rect.y+rect.h);
let maxR=0,maxG=0,maxB=0, brightPx=0, n=0;
for(let y=Math.max(0,y0);y<Math.min(info.height,y1);y++) for(let x=Math.max(0,x0);x<Math.min(info.width,x1);x++){ const i=(y*info.width+x)*3; maxR=Math.max(maxR,data[i]);maxG=Math.max(maxG,data[i+1]);maxB=Math.max(maxB,data[i+2]); if(data[i]+data[i+1]+data[i+2]>250) brightPx++; n++; }
console.log('max channel values in demo card:', maxR, maxG, maxB, 'bright pixels:', brightPx, '/', n);
await b.close();