(function(){
  'use strict';
  const SCT = {
    number(value, fallback = 0) {
      const n = Number.parseFloat(value);
      return Number.isFinite(n) ? n : fallback;
    },
    positive(value, fallback = 0) {
      return Math.max(0, SCT.number(value, fallback));
    },
    integer(value, fallback = 0) {
      return Math.max(0, Math.floor(SCT.number(value, fallback)));
    },
    money(value, digits = 2) {
      return new Intl.NumberFormat('en-US', {
        style: 'currency', currency: 'USD', minimumFractionDigits: digits,
        maximumFractionDigits: digits
      }).format(Number.isFinite(value) ? value : 0);
    },
    format(value, digits = 1) {
      return new Intl.NumberFormat('en-US', {
        minimumFractionDigits: 0, maximumFractionDigits: digits
      }).format(Number.isFinite(value) ? value : 0);
    },
    plural(value, singular, plural) {
      return `${SCT.format(value, 0)} ${value === 1 ? singular : (plural || `${singular}s`)}`;
    },
    showError(element, message) {
      if (!element) return;
      element.textContent = message || '';
      element.hidden = !message;
    },
    print() { window.print(); },
    reset(form, callback) {
      if (form) form.reset();
      if (typeof callback === 'function') callback();
    },
    setText(id, text) {
      const element = document.getElementById(id);
      if (element) element.textContent = text;
    },
    setHTML(id, html) {
      const element = document.getElementById(id);
      if (element) element.innerHTML = html;
    }
  };
  window.SCT = SCT;
})();