'use strict';
const https = require('https');

function get(url) {
  return new Promise((res, rej) => {
    https.get(url, { headers: { 'User-Agent': 'Mozilla/5.0 Chrome/120.0', 'Accept': 'application/json' } }, r => {
      let d = ''; r.on('data', c => d += c);
      r.on('end', () => { try { res(JSON.parse(d)); } catch (e) { res(null); } });
    }).on('error', () => res(null)).setTimeout(15000);
  });
}

const STORE_CONFIGS = {
  jumbo:     { host: 'www.jumbo.com.ar',       cats: ['almacen','bebidas','frutas-y-verduras','carnes','lacteos','congelados','limpieza','mascotas'] },
  disco:     { host: 'www.disco.com.ar',        cats: ['almacen','bebidas','frutas-y-verduras','carnes','lacteos','congelados','limpieza'] },
  carrefour: { host: 'www.carrefour.com.ar',    cats: ['almacen','bebidas','frutas-y-verduras','carnes','lacteos','congelados','limpieza'] },
  changomas: { host: 'www.masonline.com.ar',    cats: ['almacen','bebidas','frutas-y-verduras','carnes','lacteos','congelados','limpieza'] },
};

const PROMO_PATTERN = /\d+\s*%|\d+x\d+|2do|3ro|segunda|gratis|descuento|oferta|\d+\s*csi|ahorro|hasta|llevate|2\s*al|3\s*al/i;

async function findPromoClusters(storeName, { host, cats }) {
  const clusterMap = new Map();
  for (const cat of cats) {
    const url = `https://${host}/_v/api/intelligent-search/product_search?page=1&count=50&selectedFacets=[{"key":"category-1","value":"${cat}"}]`;
    const j = await get(url);
    for (const p of (j?.products || [])) {
      for (const c of (p.clusterHighlights || [])) {
        if (c && c.id && !clusterMap.has(c.id)) clusterMap.set(c.id, c.name || '');
      }
      for (const c of (p.productClusters || [])) {
        if (c && c.id && !clusterMap.has(c.id)) clusterMap.set(c.id, c.name || '');
      }
    }
    process.stdout.write('.');
  }
  console.log();

  const promo = [...clusterMap.entries()].filter(([id, name]) => PROMO_PATTERN.test(name));
  console.log(`${storeName}: ${clusterMap.size} total clusters, ${promo.length} promo clusters`);
  promo.slice(0, 15).forEach(([id, name]) => console.log(`  [${id}] ${name}`));
  return promo;
}

(async () => {
  for (const [name, cfg] of Object.entries(STORE_CONFIGS)) {
    process.stdout.write(`\n[${name}] scanning categories `);
    try {
      await findPromoClusters(name, cfg);
    } catch (e) {
      console.log(`ERROR: ${e.message}`);
    }
  }
})();