// @requires context.js hash.js
const candidatosBase = $('Code - Normalizar Candidatos Base').all().map((item) => item.json);
const contextRows = $input.all().map((item) => item.json);

function groupBy(rows, key) {
  const map = {};
  for (const row of rows) {
    const k = String(row[key]);
    if (!map[k]) map[k] = [];
    map[k].push(row);
  }
  return map;
}

const followupRows = contextRows.filter((row) => row.tipo === 'followup');
const taskRows = contextRows.filter((row) => row.tipo === 'task');

const followupsByTicket = groupBy(followupRows, 'tickets_id');
const tasksByTicket = groupBy(taskRows, 'tickets_id');

return candidatosBase.map((base) => {
  const idKey = String(base.id);
  const followups = (followupsByTicket[idKey] || []).map((f) => ({ id: f.id, date: f.date, texto: f.texto }));
  const tasks = (tasksByTicket[idKey] || []).map((t) => ({ id: t.id, date: t.date, status: t.status, texto: t.texto }));
  const ticket = normalizeTicket(base, { followups, tasks });
  const contextHash = buildContextFingerprint(ticket);
  return { json: { ticket, contextHash } };
});