/**
 * minigames/reaction.js
 * ⚡ Reaktionstest — Drück den Knopf so schnell wie möglich!
 */
window.MG_reaction = (function() {

  const ID       = 'reaction';
  const EMOJI    = '⚡';
  const NAME     = 'Reaktionstest';
  const DESC     = 'Wenn der Kreis GRÜN wird — so schnell wie möglich klicken!';
  const CONTROLS = 'Klick / Leertaste';
  const MULTI    = 3;

  function run(wrap, W, H, cfg, onDone) {
    const { canvas, ctx } = MGAPI.makeCanvas(wrap, W, H);
    const theme   = cfg.theme || { primary: '#ef4444' };
    const ROUNDS  = 3;
    const WIN_MS  = 600;

    let phase    = 'wait';
    let waitEnd  = 0;
    let reStart  = 0;
    let times    = [];
    let best     = Infinity;
    let stopped  = false;
    let raf, endTimer;

    function nextWait() {
      phase   = 'wait';
      waitEnd = performance.now() + (2 + Math.random() * 3) * 1000;
    }
    nextWait();

    const react = () => {
      if (phase === 'ready') {
        const t = performance.now() - reStart;
        times.push(t);
        best = Math.min(best, t);
        if (times.length >= ROUNDS) {
          clearTimeout(endTimer);
          endTimer = setTimeout(() => onDone(best < WIN_MS), 800);
          phase = 'done';
        } else {
          nextWait();
        }
      } else if (phase === 'wait') {
        phase = 'toosoon';
        setTimeout(nextWait, 1000);
      }
    };

    const onKey = e => { if (e.code === 'Space') { e.preventDefault(); react(); } };
    document.addEventListener('keydown', onKey);
    canvas.addEventListener('click', react);

    function loop(ts) {
      if (stopped) return;
      raf = requestAnimationFrame(loop);

      if (phase === 'wait' && ts > waitEnd) {
        phase   = 'ready';
        reStart = performance.now();
      }

      // Hintergrund
      const bg = phase === 'ready'   ? '#14532d'
               : phase === 'toosoon' ? '#7f1d1d'
               : phase === 'done'    ? '#0f0e17'
               : '#050508';
      ctx.fillStyle = bg;
      ctx.fillRect(0, 0, W, H);

      const cx = W / 2, cy = H / 2;

      if (phase === 'wait') {
        // Pulsierender Kreis (rot = warten)
        const pulse = 0.85 + 0.15 * Math.sin(ts * 0.003);
        ctx.beginPath();
        ctx.arc(cx, cy, 60 * pulse, 0, Math.PI * 2);
        ctx.fillStyle = 'rgba(239,68,68,0.2)';
        ctx.fill();
        ctx.strokeStyle = '#ef444488';
        ctx.lineWidth = 3;
        ctx.stroke();
        MGAPI.text(ctx, '⏳', cx, cy - 6, { size: 36 });
        MGAPI.text(ctx, 'Warte...', cx, cy + 44, { size: 14, color: '#a7a3c2' });
        MGAPI.text(ctx, `${times.length} / ${ROUNDS} Runden`, cx, H - 20, { size: 12, color: '#64748b' });
      }

      if (phase === 'ready') {
        // Leuchtender grüner Kreis
        ctx.shadowColor = '#22c55e';
        ctx.shadowBlur  = 40;
        ctx.beginPath();
        ctx.arc(cx, cy, 65, 0, Math.PI * 2);
        ctx.fillStyle = 'rgba(22,163,74,0.4)';
        ctx.fill();
        ctx.strokeStyle = '#22c55e';
        ctx.lineWidth = 4;
        ctx.stroke();
        ctx.shadowBlur = 0;
        MGAPI.text(ctx, '⚡', cx, cy - 8, { size: 44 });
        MGAPI.text(ctx, 'JETZT!', cx, cy + 48,
          { size: 22, family: "'Fredoka One',cursive", color: '#fff', shadow: '#22c55e', shadowBlur: 15 });
        MGAPI.text(ctx, 'Klick oder Leertaste!', cx, cy + 78, { size: 13, color: 'rgba(255,255,255,0.6)' });
      }

      if (phase === 'toosoon') {
        MGAPI.text(ctx, '😅', cx, cy - 10, { size: 48 });
        MGAPI.text(ctx, 'Zu früh!', cx, cy + 46,
          { size: 22, family: "'Fredoka One',cursive", color: '#fca5a5' });
      }

      if (phase === 'done') {
        MGAPI.resultScreen(ctx, W, H, best < WIN_MS,
          best < WIN_MS ? `${Math.round(best)} ms — super schnell!` : `${Math.round(best)} ms — noch etwas langsam`);
      }

      // Statistik
      if (times.length > 0 && phase !== 'done') {
        const last = times[times.length - 1];
        MGAPI.text(ctx, `Letzte: ${Math.round(last)} ms  |  Beste: ${Math.round(best)} ms`,
          cx, H - 14, { size: 11, color: 'rgba(255,255,255,0.4)' });
      }
    }

    raf = requestAnimationFrame(loop);
    return {
      stop() {
        stopped = true;
        cancelAnimationFrame(raf);
        clearTimeout(endTimer);
        document.removeEventListener('keydown', onKey);
        canvas.removeEventListener('click', react);
      },
    };
  }

  function launch(wrap, W, H, cfg)  { return run(wrap, W, H, cfg, won => MGAPI.onResult(won)); }
  function preview(wrap, W, H, cfg) { return run(wrap, W, H, cfg, won => MGAPI.onResult(won)); }

  return { id: ID, emoji: EMOJI, name: NAME, desc: DESC, controls: CONTROLS, multi: MULTI, launch, preview };

})();