/*
  UTIL — small shared helpers. No dependencies.
*/
(function () {
  'use strict';

  function escapeHtml(value) {
    return String(value == null ? '' : value)
      .replace(/&/g, '&')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;')
      .replace(/'/g, '&#39;');
  }

  function getParam(name) {
    return new URLSearchParams(location.search).get(name);
  }

  // 95 -> "1:35", 3675 -> "1:01:15"
  function formatSeconds(sec) {
    sec = Math.max(0, Math.floor(sec || 0));
    const h = Math.floor(sec / 3600);
    const m = Math.floor((sec % 3600) / 60);
    const s = sec % 60;
    const mm = h ? String(m).padStart(2, '0') : String(m);
    const ss = String(s).padStart(2, '0');
    return h ? `${h}:${mm}:${ss}` : `${mm}:${ss}`;
  }

  // 141 -> "2h 21m"
  function runtimeLabel(mins) {
    if (!mins || mins <= 0) return '';
    const h = Math.floor(mins / 60);
    const m = mins % 60;
    return h ? (m ? `${h}h ${m}m` : `${h}h`) : `${m}m`;
  }

  function debounce(fn, wait) {
    let timer = null;
    return function (...args) {
      clearTimeout(timer);
      timer = setTimeout(() => fn.apply(this, args), wait);
    };
  }

  // resize a full TMDB image URL (…/t/p/<size>/path) to another size
  function tmdbResize(url, size) {
    if (!url) return '';
    return url.replace(/\/t\/p\/[A-Za-z0-9._-]+/, `/t/p/${size}`);
  }

  window.SR = window.SR || {};
  SR.util = { escapeHtml, getParam, formatSeconds, runtimeLabel, debounce, tmdbResize };
})();