// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
// DONAU2SPACE // DEV ENTITY — Utilities
// ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

export const $ = (sel, ctx = document) => ctx.querySelector(sel);
export const $$ = (sel, ctx = document) => [...ctx.querySelectorAll(sel)];

export const sleep = ms => new Promise(r => setTimeout(r, ms));
export const random = (min, max) => Math.random() * (max - min) + min;
export const randInt = (min, max) => (random(min, max) | 0);
export const clamp = (v, lo, hi) => Math.max(lo, Math.min(hi, v));
export const lerp = (a, b, t) => a + (b - a) * t;
export const pick = arr => arr[(Math.random() * arr.length) | 0];

export function esc(s) {
  const map = { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#039;' };
  return (s ?? '').replace(/[&<>"']/g, m => map[m]);
}

export function nowISO() {
  return new Date().toISOString().replace('T', ' ').replace('Z', ' UTC');
}

export function timeGreeting() {
  const h = new Date().getHours();
  if (h < 5) return 'Deep night. Perfect time for dev.';
  if (h < 8) return 'Early bird mode. Coffee recommended.';
  if (h < 12) return 'Morning session. Systems nominal.';
  if (h < 14) return 'Midday. Hunger may affect judgment.';
  if (h < 18) return 'Afternoon cycle. Productivity variable.';
  if (h < 22) return 'Evening mode. Creative peak for some.';
  return 'Late night. Here be dragons.';
}

// ── Event Bus ──────────────────────────────────
const listeners = {};

export const bus = {
  on(event, fn) {
    (listeners[event] = listeners[event] || []).push(fn);
    return () => this.off(event, fn);
  },
  off(event, fn) {
    listeners[event] = (listeners[event] || []).filter(f => f !== fn);
  },
  emit(event, data) {
    (listeners[event] || []).forEach(fn => {
      try { fn(data); } catch (e) { console.warn(`[bus:${event}]`, e); }
    });
  }
};

// ── Storage helpers ────────────────────────────
const PREFIX = 'd2s_';

export const store = {
  get(key, fallback = null) {
    try {
      const raw = localStorage.getItem(PREFIX + key);
      return raw !== null ? JSON.parse(raw) : fallback;
    } catch { return fallback; }
  },
  set(key, val) {
    try { localStorage.setItem(PREFIX + key, JSON.stringify(val)); } catch {}
  },
  remove(key) {
    try { localStorage.removeItem(PREFIX + key); } catch {}
  }
};

// ── DOM helper ─────────────────────────────────
export function el(tag, attrs = {}, children = []) {
  const node = document.createElement(tag);
  for (const [k, v] of Object.entries(attrs)) {
    if (k === 'className') node.className = v;
    else if (k === 'textContent') node.textContent = v;
    else if (k.startsWith('on')) node.addEventListener(k.slice(2).toLowerCase(), v);
    else node.setAttribute(k, v);
  }
  for (const c of children) {
    node.appendChild(typeof c === 'string' ? document.createTextNode(c) : c);
  }
  return node;
}