'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();
const promos=[];

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));}
function evalS(expr,cb){send('Runtime.evaluate',{expression:expr,returnByValue:true},(r)=>cb(r&&r.result&&r.result.value));}
function evalJ(expr,cb){
  const wrapped = '(function(){try{var __r=('+expr+');return JSON.stringify(__r);}catch(e){return JSON.stringify({__err:e.message});}})()';
  evalS(wrapped, v=>{
    if(!v){cb(null);return;}
    try{const p=JSON.parse(v);if(p&&p.__err){console.error('evalJ err:',p.__err);cb(null);}else cb(p);}catch(e){console.error('parse err:',String(v).slice(0,200));cb(null);}
  });
}

ws.on('open',()=>{
  send('Target.getTargets',{},(res)=>{
    const t=(res.targetInfos||[]).filter(t=>t.type==='page')[0];
    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('Navigated. Waiting 10s...');
      setTimeout(extractBase,10000);
    }
  }
});

function extractBase(){
  const expr = [
    '(function(){',
    '  var items=document.querySelectorAll(\'[class*="list-by-days__item"]\');',
    '  var out=[];',
    '  [].forEach.call(items,function(item){',
    '    var flags=[].map.call(item.querySelectorAll(\'[class*="flag"]\'),function(el){return el.textContent.trim();});',
    '    var first=item.querySelector(\'[class*="first-text"]\');',
    '    var second=item.querySelector(\'[class*="second-text"]\');',
    '    var third=item.querySelector(\'[class*="third-text"]\');',
    '    var img=item.querySelector("img");',
    '    out.push({',
    '      canal:flags.join("|"),',
    '      descuento:first?first.textContent.trim():"",',
    '      detalle:second?second.textContent.trim():"",',
    '      vigencia:third?third.textContent.trim():"",',
    '      imgAlt:img?img.alt:""',
    '    });',
    '  });',
    '  return {count:items.length,items:out};',
    '})()'
  ].join('\n');

  evalJ(expr, data=>{
    if(!data||!data.items){console.log('No base data:',data);ws.close();return;}
    console.log('Got',data.count,'promo items');
    data.items.forEach((p,i)=>promos.push(Object.assign({legal:'',idx:i},p)));
    clickNext(0);
  });
}

function clickNext(idx){
  if(idx>=promos.length){saveAndDone();return;}

  // First close any open modal
  evalS('(function(){var c=document.querySelector(\'[aria-label="Close"],[aria-label="Cerrar"],[class*="modal__close"],[class*="closeButton"]\');if(c)c.click();document.dispatchEvent(new KeyboardEvent("keydown",{key:"Escape",bubbles:true}));})()', ()=>{
    setTimeout(()=>{
      // Click button idx
      evalS('(function(){var btns=document.querySelectorAll(\'[class*="bank-modal__button"]\');if(!btns['+idx+'])return "missing";btns['+idx+'].scrollIntoView({block:"center",behavior:"instant"});btns['+idx+'].click();return "ok";})()', res=>{
        if(res==='missing'){console.log('['+idx+'] missing, skipping');clickNext(idx+1);return;}

        setTimeout(()=>{
          // Try multiple selectors for legal text
          const legalExpr = [
            '(function(){',
            '  var selectors=[',
            '    \'[class*="bank-modal__text"]\',',
            '    \'[class*="vtex-modal__modal"] p\',',
            '    \'[class*="vtex-modal"] [class*="content"] p\',',
            '    \'[role="dialog"] p\'',
            '  ];',
            '  for(var i=0;i<selectors.length;i++){',
            '    var el=document.querySelector(selectors[i]);',
            '    if(el){var t=(el.innerText||"").replace(/\\s+/g," ").trim();if(t.length>20)return t;}',
            '  }',
            '  // fallback: fixed visible element',
            '  var all=document.querySelectorAll("*");',
            '  for(var j=0;j<all.length;j++){',
            '    var el2=all[j];',
            '    var cs=window.getComputedStyle(el2);',
            '    if(cs.position==="fixed"&&el2.offsetParent!==null){',
            '      var t2=(el2.innerText||"").replace(/\\s+/g," ").trim();',
            '      if(t2.length>50&&t2.length<5000&&!/cookie|chat|bot|menu/i.test(t2))return t2.slice(0,800);',
            '    }',
            '  }',
            '  return "";',
            '})()'
          ].join('\n');

          evalS(legalExpr, legal=>{
            promos[idx].legal=legal||'';
            process.stdout.write('['+idx+'] '+promos[idx].descuento+' → '+(legal?legal.slice(0,80)+'...':'(empty)')+'\n');
            clickNext(idx+1);
          });
        },2000);
      });
    },400);
  });
}

function saveAndDone(){
  console.log('\n=== RESULTS ===');
  promos.forEach((p,i)=>{
    console.log('['+i+'] '+p.canal+' | '+p.descuento+' | '+p.detalle.slice(0,50)+' | '+p.vigencia.slice(0,40));
    if(p.imgAlt)console.log('   bank: '+p.imgAlt);
    if(p.legal)console.log('   LEGAL: '+p.legal.slice(0,200));
    console.log();
  });
  const out={generatedAt:new Date().toISOString(),source:'chrome-cdp-dom',promos};
  fs.writeFileSync('/tmp/dia_promos_full.json',JSON.stringify(out,null,2));
  console.log('Saved /tmp/dia_promos_full.json');
  ws.close();
}

ws.on('error',e=>console.error('WS err:',e.message));
ws.on('close',()=>process.exit(0));
setTimeout(()=>{console.log('TIMEOUT — saving what we have');saveAndDone();},180000);