// 🂡🂢🂣🂤🂥 BLACKJACK HRA 🂡🂢🂣🂤🂥

function startBlackjack(){
  mainPanel.innerHTML=''; 
  controls.innerHTML=''; 
  log.textContent='';

  const container = document.createElement('div'); 
  mainPanel.appendChild(container);

  // UI prvky
  const betInput = document.createElement('input');
  betInput.type='number'; 
  betInput.step='0.25'; 
  betInput.min='0.25';
  betInput.placeholder='Stávka (€)';

  const startBtn = document.createElement('button'); 
  startBtn.textContent='Začni hru';

  const hitBtn = document.createElement('button'); 
  hitBtn.textContent='Hit'; 
  hitBtn.disabled=true;

  const standBtn = document.createElement('button'); 
  standBtn.textContent='Stand'; 
  standBtn.disabled=true;

  const playerDiv = document.createElement('div'); 
  const dealerDiv = document.createElement('div');
  const resultDiv = document.createElement('div'); 
  resultDiv.className='result'; 
  resultDiv.style.marginTop='10px';

  playerDiv.style.marginTop = '10px'; 
  dealerDiv.style.marginTop = '10px';

  container.append(betInput, startBtn, hitBtn, standBtn, playerDiv, dealerDiv, resultDiv);

  let deck = [], playerHand=[], dealerHand=[], activeBet=0;

  // === DECK A HODNOTY ===
  function createDeck(){
    const suits = ['♠','♥','♦','♣'];
    const values = ['A','2','3','4','5','6','7','8','9','10','J','Q','K'];
    let d = [];
    for(let s of suits) for(let v of values) d.push(v+s);
    return d.sort(()=>Math.random()-0.5);
  }

  function cardValue(card){
    let v = card.slice(0,-1);
    if(v==='A') return 11;
    if(['J','Q','K'].includes(v)) return 10;
    return parseInt(v);
  }

  function handValue(hand){
    let sum = hand.reduce((acc,c)=>acc+cardValue(c),0);
    let aces = hand.filter(c=>c.startsWith('A')).length;
    while(sum>21 && aces>0){ sum-=10; aces--; }
    return sum;
  }

  function updateHands(hideDealer=false){
    if(hideDealer){
      dealerDiv.textContent = `Dealer: ${dealerHand[0]} [skrytá]`;
    } else {
      dealerDiv.textContent = `Dealer: ${dealerHand.join(' ')} (${handValue(dealerHand)})`;
    }
    playerDiv.textContent = `Hráč: ${playerHand.join(' ')} (${handValue(playerHand)})`;
  }

  // === KONIEC HRY ===
  function endGame(){
    hitBtn.disabled=true; 
    standBtn.disabled=true;
    startBtn.disabled=false;

    let playerVal = handValue(playerHand);
    let dealerVal = handValue(dealerHand);

    updateHands(false);

    if(playerVal>21){
      resultDiv.textContent=`💥 Prehral si ${activeBet.toFixed(2)}€ (Bust)`;
      resultDiv.style.color='red';
    } else if(dealerVal>21 || playerVal>dealerVal){
      let win = activeBet*2;
      bank += win;
      bankEl.textContent = bank.toFixed(2);
      resultDiv.textContent=`🎉 Vyhral si ${win.toFixed(2)}€!`;
      resultDiv.style.color='green';
    } else if(playerVal===dealerVal){
      bank += activeBet;
      bankEl.textContent = bank.toFixed(2);
      resultDiv.textContent=`🤝 Remíza, stávka vrátená`;
      resultDiv.style.color='orange';
    } else {
      resultDiv.textContent=`💥 Prehral si ${activeBet.toFixed(2)}€`;
      resultDiv.style.color='red';
    }
  }

  // === ŠTART HRY ===
  startBtn.onclick = ()=>{
    let bet = parseFloat(betInput.value);
    if(isNaN(bet) || bet<=0 || bet>bank){ 
      log.textContent="Zlá stávka"; 
      return; 
    }
    bank -= bet; 
    bankEl.textContent = bank.toFixed(2); 
    activeBet=bet;
    resultDiv.textContent='';
    resultDiv.style.color='white';

    deck = createDeck();
    playerHand = [deck.pop(), deck.pop()];
    dealerHand = [deck.pop(), deck.pop()];
    updateHands(true);

    startBtn.disabled=true;
    hitBtn.disabled=false; 
    standBtn.disabled=false;

    // automatický blackjack (21 na začiatku)
    if(handValue(playerHand)===21){
      resultDiv.textContent="🃏 BLACKJACK! Vyhrávaš 2.5x!";
      resultDiv.style.color='gold';
      let win = activeBet*2.5;
      bank += win;
      bankEl.textContent = bank.toFixed(2);
      startBtn.disabled=false;
      hitBtn.disabled=true;
      standBtn.disabled=true;
    }
  }

  // === TLAČIDLÁ ===
  hitBtn.onclick = ()=>{
    playerHand.push(deck.pop());
    updateHands(true);
    if(handValue(playerHand)>21){
      endGame();
    }
  }

  standBtn.onclick = ()=>{
    hitBtn.disabled=true; 
    standBtn.disabled=true;
    while(handValue(dealerHand)<17){
      dealerHand.push(deck.pop());
    }
    endGame();
  }
}

// 🔹 pridaj do menu hier
let botOrder = ["mine","plinko","5050","slots","blackjack"];

// 🔹 pridaj do prepínača hier
function startGame(game){
  mainPanel.innerHTML=''; 
  controls.innerHTML=''; 
  log.textContent='';
  updateBotky(game);
  if(game==="mine") startMines();
  if(game==="plinko") startPlinko();
  if(game==="5050") start5050();
  if(game==="slots") startSlots();
  if(game==="blackjack") startBlackjack();
}