const TRAIT_DEFS = {
  fire:  { id: 'challenge', ko: '도전정신', icon: 'challenge', color: 'var(--el-fire)' },
  metal: { id: 'lead',      ko: '리더십',   icon: 'lead',      color: 'var(--el-metal)' },
  wood:  { id: 'adapt',     ko: '적응력',   icon: 'adapt',     color: 'var(--el-wood)' },
  water: { id: 'wisdom',    ko: '지혜',     icon: 'wisdom',    color: 'var(--el-water)' },
  earth: { id: 'wealth',    ko: '풍부함',   icon: 'wealth',    color: 'var(--el-earth)' },
};

const WILL_TRAIT = { id: 'will', ko: '의지', icon: 'will', color: 'var(--purple)' };

export default function deriveTraits(elements, sipsin = []) {
  const sorted = Object.entries(elements || {})
    .filter(([, v]) => typeof v === 'number')
    .sort((a, b) => b[1] - a[1]);

  const traits = [];
  for (const [el, score] of sorted) {
    if (score >= 30 && TRAIT_DEFS[el]) {
      traits.push(TRAIT_DEFS[el]);
    }
  }
  if (!traits.find((t) => t.id === 'will')) traits.push(WILL_TRAIT);

  for (const [el] of sorted) {
    if (traits.length >= 6) break;
    if (TRAIT_DEFS[el] && !traits.find((t) => t.id === TRAIT_DEFS[el].id)) {
      traits.push(TRAIT_DEFS[el]);
    }
  }
  return traits.slice(0, 6);
}