'use strict';
const WS_URL = 'ws://127.0.0.1:18792/cdp';
const TOKEN  = '0537d84a67f2e43b525964bb43d93f6dfae1ec1b50946455';
const TARGET_URL = 'https://diaonline.supermercadosdia.com.ar/medios-de-pago-y-promociones';
const WS = require('/usr/lib/node_modules/openclaw/node_modules/ws').WebSocket ||
           require('/usr/lib/node_modules/openclaw/node_modules/ws');
const fs = require('fs');
const ws = new WS(WS_URL, { headers: { 'x-openclaw-relay-token': TOKEN } });
let _id=1, sessionId=null, started=false;
const cbs=new Map();

function send(method,params,cb){const id=_id++;const m={id,method,params:params||{}};if(sessionId)m.sessionId=sessionId;if(cb)cbs.set(id,cb);ws.send(JSON.stringify(m));}

ws.on('open',()=>{
  send('Target.getTargets',{},(res)=>{
    const t=(res.targetInfos||[]).filter(t=>t.type==='page')[0];
    console.log('Attaching to:',t&&t.url);
    send('Target.attachToTarget',{targetId:t.targetId,flatten:true},(r2)=>{
      sessionId=r2.sessionId;
      send('Page.enable');
      send('Page.navigate',{url:TARGET_URL});
    });
  });
});

ws.on('message',raw=>{
  const msg=JSON.parse(raw);
  if(msg.id&&cbs.has(msg.id)){const cb=cbs.get(msg.id);cbs.delete(msg.id);cb(msg.result||{});return;}
  if(!msg.method)return;
  if(msg.method==='Page.frameNavigated'){
    const url=msg.params&&msg.params.frame&&msg.params.frame.url;
    if(url&&url.includes('medios-de-pago')&&!started){
      started=true;
      console.log('On promo page, waiting 8s...');
      setTimeout(getHTML,8000);
    }
  }
});

function getHTML(){
  send('Runtime.evaluate',{expression:'document.documentElement.outerHTML',returnByValue:true},(res)=>{
    const html = res&&res.result&&res.result.value;
    if(!html){console.log('no html, result:',JSON.stringify(res).slice(0,200));ws.close();return;}
    console.log('Got HTML, length:',html.length);
    fs.writeFileSync('/tmp/dia_promos.html',html,'utf8');
    console.log('Saved to /tmp/dia_promos.html');
    parsePromos(html);
    ws.close();
  });
}

function parsePromos(html){
  // Extract visible text between promo markers
  // Find all "Ver Legales" button occurrences
  const legalRegex=/Ver Legales/g;
  let match;
  const positions=[];
  while((match=legalRegex.exec(html))!==null) positions.push(match.index);
  console.log('Found',positions.length,'Ver Legales occurrences in HTML');

  // For each, extract surrounding context (look backwards for promo content)
  positions.forEach((pos,i)=>{
    const before=html.slice(Math.max(0,pos-2000),pos);
    // Extract text by stripping tags
    const text=before.replace(/<[^>]+>/g,' ').replace(/\s+/g,' ').trim().slice(-500);
    console.log('\n['+i+'] ...'+text+' | Ver Legales');
  });

  // Also look for any legal text in hidden/data attributes
  const dataRegex=/data-legal[^"]*="([^"]{20,})"/gi;
  while((match=dataRegex.exec(html))!==null){
    console.log('data-legal attr:', match[1].slice(0,200));
  }
  // JSON.parse embedded data
  const scriptRegex=/<script[^>]*>([^<]*(?:legal|promo|banco|descuento)[^<]*)<\/script>/gi;
  let scriptCount=0;
  while((match=scriptRegex.exec(html))!==null&&scriptCount<5){
    console.log('Script with legal/promo:', match[1].slice(0,400));
    scriptCount++;
  }
}

ws.on('error',e=>console.error('err:',e.message));
ws.on('close',()=>process.exit(0));
setTimeout(()=>{ws.close();},60000);