Provably Fair RNG Audit Board

// DomHuang Provably Fair Pack Opening Algorithm (TypeScript)
export async function openPack(packId: string, salt: string) {
  // 1. Fetch pre-generated blind index mapped to the pack
  const blindIndex = crypto.subtle.digest("SHA-256", new TextEncoder().encode(packId + salt));
  
  // 2. Fetch the pre-assigned card list mapped from factory production
  const preGeneratedCards = await db.select()
    .from(schema.cards)
    .where(eq(schema.cards.blindIndex, hex(blindIndex)))
    .all();
    
  return preGeneratedCards; // 100% Immutable and Auditable
}

// DomHuang Arena Clash Battle Simulation (Pure Math)
export function simulateClash(deckA: Card[], deckB: Card[]) {
  let log = [];
  for (let turn = 1; turn <= 20; turn++) {
    // Battle outcomes are computed deterministically using standard formula
    const powerA = deckA.reduce((sum, c) => sum + (c.atk || 0), 0);
    const defenseB = deckB.reduce((sum, c) => sum + (c.def || 0), 0);
    
    const damage = Math.max(1, powerA - Math.floor(defenseB * 0.4));
    deckB[0].hp = Math.max(0, deckB[0].hp - damage);
    
    if (deckB[0].hp === 0) deckB.shift(); // Card defeated
    if (deckB.length === 0) break; // Team defeated
  }
  return log;
}