/* ==========================================================================
   ELEGANT AUDIO SYNTHESIZER (WEB AUDIO API)
   ========================================================================== */

class SoundEffects {
  constructor() {
    this.ctx = null;
    this.enabled = true;
  }

  init() {
    if (!this.ctx) {
      const AudioCtx = window.AudioContext || window.webkitAudioContext;
      if (AudioCtx) {
        this.ctx = new AudioCtx();
      }
    }
    if (this.ctx && this.ctx.state === 'suspended') {
      this.ctx.resume();
    }
  }

  playTick() {
    if (!this.enabled) return;
    this.init();
    if (!this.ctx) return;

    try {
      const osc = this.ctx.createOscillator();
      const gain = this.ctx.createGain();

      osc.type = 'sine';
      // Low subtle tick
      osc.frequency.setValueAtTime(600, this.ctx.currentTime);
      osc.frequency.exponentialRampToValueAtTime(1200, this.ctx.currentTime + 0.03);

      gain.gain.setValueAtTime(0.04, this.ctx.currentTime);
      gain.gain.exponentialRampToValueAtTime(0.001, this.ctx.currentTime + 0.03);

      osc.connect(gain);
      gain.connect(this.ctx.destination);

      osc.start();
      osc.stop(this.ctx.currentTime + 0.035);
    } catch (e) {
      // Audio context edge cases
    }
  }

  playReveal() {
    if (!this.enabled) return;
    this.init();
    if (!this.ctx) return;

    try {
      const now = this.ctx.currentTime;
      const osc = this.ctx.createOscillator();
      const gain = this.ctx.createGain();

      osc.type = 'triangle';
      osc.frequency.setValueAtTime(440, now);
      osc.frequency.exponentialRampToValueAtTime(880, now + 0.12);

      gain.gain.setValueAtTime(0.08, now);
      gain.gain.exponentialRampToValueAtTime(0.001, now + 0.12);

      osc.connect(gain);
      gain.connect(this.ctx.destination);

      osc.start(now);
      osc.stop(now + 0.13);
    } catch (e) {}
  }

  playFanfare() {
    if (!this.enabled) return;
    this.init();
    if (!this.ctx) return;

    try {
      const now = this.ctx.currentTime;
      // Elegant Glass Chimes chord: C5, E5, G5, C6
      const freqs = [523.25, 659.25, 783.99, 1046.50];

      freqs.forEach((f, idx) => {
        const osc = this.ctx.createOscillator();
        const gain = this.ctx.createGain();

        osc.type = 'sine';
        osc.frequency.setValueAtTime(f, now + idx * 0.04);

        gain.gain.setValueAtTime(0.06, now + idx * 0.04);
        gain.gain.exponentialRampToValueAtTime(0.001, now + idx * 0.04 + 0.5);

        osc.connect(gain);
        gain.connect(this.ctx.destination);

        osc.start(now + idx * 0.04);
        osc.stop(now + idx * 0.04 + 0.55);
      });
    } catch (e) {}
  }
}

window.soundEffects = new SoundEffects();