┌─────────────────────────────────────────────────────┐
│ Attack: 5-10ms    │ Pure sine starts BRIGHT         │
│ Peak: ~880Hz (A5) │ Classic 8-bit "bleep"           │
│ Decay: 200-400ms  │ Natural damping feel            │
│ Overtones: 2nd+3rd│ Bell-like shimmer               │
│ Processing: 8-bit │ Adds warmth via quantization    │
└─────────────────────────────────────────────────────┘

Audio: [Sound Name] by [Creator] from [Source]
Licensed under [CC BY 4.0 / CC0]
https://[source-url]

// Win31-style sound manager for web
class Win31SoundManager {
  private audioContext: AudioContext | null = null;
  private sounds: Map<string, AudioBuffer> = new Map();

  constructor() {
    // Lazy init on first user interaction (browser policy)
  }

  private getContext(): AudioContext {
    if (!this.audioContext) {
      this.audioContext = new AudioContext({ sampleRate: 22050 }); // Lo-fi!
    }
    return this.audioContext;
  }

  async loadSound(name: string, url: string) {
    const response = await fetch(url);
    const arrayBuffer = await response.arrayBuffer();
    const audioBuffer = await this.getContext().decodeAudioData(arrayBuffer);
    this.sounds.set(name, audioBuffer);
  }

  play(name: string, volume = 0.5) {
    const buffer = this.sounds.get(name);
    if (!buffer) return;

    const ctx = this.getContext();
    const source = ctx.createBufferSource();
    const gain = ctx.createGain();

    source.buffer = buffer;
    gain.gain.value = volume;

    source.connect(gain);
    gain.connect(ctx.destination);
    source.start(0);
  }

  // Procedural 8-bit "ding"
  playDing(frequency = 880) {
    const ctx = this.getContext();
    const osc = ctx.createOscillator();
    const gain = ctx.createGain();

    osc.type = 'triangle'; // Softer than sine, more 8-bit
    osc.frequency.setValueAtTime(frequency, ctx.currentTime);

    // Fast attack, medium decay
    gain.gain.setValueAtTime(0.3, ctx.currentTime);
    gain.gain.exponentialRampToValueAtTime(0.001, ctx.currentTime + 0.4);

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

    osc.start(ctx.currentTime);
    osc.stop(ctx.currentTime + 0.4);
  }
}

export const win31Sounds = new Win31SoundManager();

// Generate Win31-style sounds procedurally
function createChime(ctx: AudioContext, baseFreq = 660): AudioBufferSourceNode {
  const duration = 1.5;
  const sampleRate = ctx.sampleRate;
  const buffer = ctx.createBuffer(1, duration * sampleRate, sampleRate);
  const data = buffer.getChannelData(0);

  // Two-tone chime (like CHIMES.WAV character)
  for (let i = 0; i < data.length; i++) {
    const t = i / sampleRate;
    const env = Math.exp(-t * 3); // Decay envelope

    // Two harmonically related tones
    const tone1 = Math.sin(2 * Math.PI * baseFreq * t);
    const tone2 = Math.sin(2 * Math.PI * baseFreq * 1.5 * t) * 0.5;

    data[i] = (tone1 + tone2) * env * 0.3;
  }

  // 8-bit quantization for authentic lo-fi
  for (let i = 0; i < data.length; i++) {
    data[i] = Math.round(data[i] * 127) / 127;
  }

  const source = ctx.createBufferSource();
  source.buffer = buffer;
  return source;
}

import * as Haptics from 'expo-haptics';

async function playWithHaptic(soundName: string, hapticType: Haptics.ImpactFeedbackStyle) {
  // Fire both simultaneously
  await Promise.all([
    win31Sounds.play(soundName),
    Haptics.impactAsync(hapticType),
  ]);
}

// Usage
await playWithHaptic('click', Haptics.ImpactFeedbackStyle.Light);
await playWithHaptic('error', Haptics.ImpactFeedbackStyle.Heavy);