import type { Pick } from './shuffle';

export function buildReferenceBlock(picks: Pick[]): string {
  return picks
    .map((p, i) => {
      const c = p.card;
      const dir = p.reversed ? '역방향' : '정방향';
      const kws = (p.reversed ? c.reversedKeywords : c.keywords).join(', ');
      const meaning = p.reversed ? c.meaningReversed : c.meaningUpright;
      const arcana = c.arcana === 'major' ? `Major (${c.id})` : `Minor (${c.suit})`;
      return [
        `## ${i + 1}. 위치: ${p.position} | 카드: ${c.nameEn} (${dir})`,
        `- 아르카나: ${arcana}`,
        `- 원소: ${c.element}`,
        `- ${dir} 키워드: ${kws}`,
        `- ${dir} 의미: ${meaning}`,
      ].join('\n');
    })
    .join('\n\n');
}

export function buildContextMeta(picks: Pick[]) {
  const major = picks.filter((p) => p.card.arcana === 'major').length;
  const minor = picks.length - major;
  const element_distribution: Record<string, number> = { air: 0, water: 0, fire: 0, earth: 0 };
  for (const p of picks) element_distribution[p.card.element] += 1;
  const orientation_flow = picks.map((p) => (p.reversed ? 'reversed' : 'upright')).join('→');
  return { major_minor_ratio: `${major}:${minor}`, element_distribution, orientation_flow };
}