'use strict';
/* ============================================================
   MAIN — boot, data validation
   ============================================================ */

function Data_validate() {
  const problems = [];
  const chkItem = (id, where) => { if (!ITEMS[id]) problems.push(`missing item ${id} (${where})`); };
  // shops
  for (const nid of Object.keys(NPCS)) {
    const n = NPCS[nid];
    if (n.shop) n.shop.stock.forEach(i => chkItem(i, 'shop ' + nid));
    (n.teach || []).forEach(t => {
      if (t.tech && !TECHNIQUES[t.tech]) problems.push(`npc ${nid} teaches missing tech ${t.tech}`);
      if (t.internal && !INTERNALS[t.internal]) problems.push(`npc ${nid} teaches missing internal ${t.internal}`);
    });
    if (n.dlg && !DIALOGUES[n.dlg]) problems.push(`npc ${nid} dialogue missing: ${n.dlg}`);
  }
  // locations
  for (const lid of Object.keys(LOCS)) {
    LOCS[lid].npcs.forEach(nid => { if (!NPCS[nid]) problems.push(`loc ${lid} npc missing ${nid}`); });
  }
  TRAVEL.forEach(([a, b]) => {
    if (!LOCS[a]) problems.push('travel missing loc ' + a);
    if (!LOCS[b]) problems.push('travel missing loc ' + b);
  });
  // quests referenced in dialogues (rough scan)
  const refs = JSON.stringify(DIALOGUES).match(/q_[a-z0-9_]+/g) || [];
  [...new Set(refs)].forEach(q => { if (!QUESTS[q]) problems.push('dialogue references unknown quest ' + q); });
  // techniques referenced as manuals
  Object.values(ITEMS).filter(i => i.type === 'manual').forEach(m => {
    if (!TECHNIQUES[m.teach] && !INTERNALS[m.teach] && !LIGHTNESS[m.teach]) problems.push(`manual ${m.id} teaches unknown ${m.teach}`);
  });
  // origins items/techs
  Object.entries(ORIGINS).forEach(([oid, o]) => {
    (o.items || []).forEach(i => chkItem(i, 'origin ' + oid));
    (o.techs || []).forEach(t => { if (!TECHNIQUES[t]) problems.push(`origin ${oid} tech ${t} missing`); });
  });
  // upgrades / recipes
  Object.entries(SMITH_UPGRADES).forEach(([k, up]) => { chkItem(k, 'smith'); chkItem(up.to, 'smith->'); Object.keys(up.mats).forEach(m => chkItem(m, 'smith mat')); });
  ALCHEMY_RECIPES.forEach(r => { chkItem(r.out, 'alch'); Object.keys(r.mats).forEach(m => chkItem(m, 'alch mat')); });
  // dialogues nodes integrity
  for (const did of Object.keys(DIALOGUES)) {
    const D = DIALOGUES[did];
    for (const nid of Object.keys(D.nodes)) {
      const opts = typeof D.nodes[nid].opts === 'function' ? [] : (D.nodes[nid].opts || []);
      opts.forEach(o => { if (o.next && !D.nodes[o.next]) problems.push(`${did}.${nid} -> missing node ${o.next}`); });
    }
  }
  if (problems.length) {
    console.warn('[Data] issues found:');
    problems.forEach(p => console.warn('  -', p));
  } else {
    console.log('[Data] validation passed ✔');
  }
  return problems;
}

window.addEventListener('load', () => {
  Data_validate();
  UI.init();
  UI.renderTitleMenu();
  Log.add('The jianghu stirs\u2026', 'sys');
});