(function(){
  const titleMap = { login:'·Î±×ÀÎ', send:'Àü¼Û', sent:'³»¿ª', charge:'°áÁ¦', reserved:'¿¹¾à', my:'MY' };

  // HTML partial include (inc/header.htm, inc/nav.htm)
  async function includePartials(){
    const nodes = document.querySelectorAll('[data-include]');
    await Promise.all(Array.from(nodes).map(async el=>{
      const url = el.getAttribute('data-include');
      const res = await fetch(url, {cache:'no-store'});
      const html = await res.text();
      el.outerHTML = html;   // ÀÚ¸® ÀÚü¸¦ ±³Ã¼
    }));
  }

  // °øÅë ¼Ð ÃʱâÈ­
  function initShell(){
    const page = (document.body.dataset.page||'send').trim();
    const isLoginPage = page === 'login';

    // Çì´õ/³×ºñ Ç¥½Ã¿©ºÎ
    const header = document.getElementById('main-title');
    const nav    = document.getElementById('bottomNav');
    if(header) header.style.display = isLoginPage ? 'none' : 'flex';
    if(nav)    nav.style.display    = isLoginPage ? 'none' : 'flex';

    // ŸÀÌƲ
    const pt = document.getElementById('page-title');
    if(pt) pt.textContent = titleMap[page] || '¹®ÀÚ³ª¶ó';

    // ³×ºñ È°¼º Ç¥½Ã
    document.querySelectorAll('#bottomNav a').forEach(a=>{
      a.classList.toggle('active', a.dataset.page === page);
    });

    // µÚ·Î°¡±â
    const back = document.getElementById('btnBack');
    if(back) back.addEventListener('click', ()=>history.back());

    // ·Î±×ÀÎ/·Î±×¾Æ¿ô ¹öÆ° ³ëÃâ Á¤Ã¥
    const btnLogin  = document.getElementById('btnLogin');
    const btnLogout = document.getElementById('btnLogout');
    if(isLoginPage){
      if(btnLogin)  btnLogin.style.display  = 'inline-block';
      if(btnLogout) btnLogout.style.display = 'none';
    }else{
      if(btnLogin)  btnLogin.style.display  = 'none';
      if(btnLogout){
        btnLogout.style.display = 'inline-block';
        btnLogout.addEventListener('click', ()=>{
          const returnUrl = encodeURIComponent('/pages/login.htm#login');
          location.href = '/MSG/php/logout.php?return_url=' + returnUrl;
        });
      }
    }
  }

  // °øÅë À¯Æ¿
  window.mn = window.mn || {};
  window.mn.currency = (n)=> (n||0).toLocaleString('ko-KR');
  window.mn.copy = (t)=> navigator.clipboard?.writeText(t);

  // ºÎÇ° ·Îµå ÈÄ ¼Ð ¼¼ÆÃ
  document.addEventListener('DOMContentLoaded', async ()=>{
    await includePartials();
    initShell();
  });
})();