// OmégaKube - shared scripts

// Feather icons loader (centralized)
// loads https://unpkg.com/feather-icons when needed and exposes window.ensureFeather()
const FEATHER_URL = 'https://unpkg.com/feather-icons';
function ensureFeather() {
  if (window.__featherLoading) return window.__featherLoading;
  if (window.feather && window.feather.replace) return Promise.resolve(window.feather);
  window.__featherLoading = new Promise((resolve, reject) => {
    const s = document.createElement('script');
    s.src = FEATHER_URL;
    s.async = true;
    s.onload = () => resolve(window.feather);
    s.onerror = () => reject(new Error('Failed to load feather-icons'));
    document.head.appendChild(s);
  });
  return window.__featherLoading;
}
window.ensureFeather = ensureFeather;

document.addEventListener('DOMContentLoaded', async () => {
  // ensure feather icons are available and replace icons in document
  try { await ensureFeather(); if (window.feather && feather.replace) try { feather.replace(); } catch(e) {} } catch (e) {}

  // Load HTML includes (components header/footer) and fix relative paths when necessary
  async function loadIncludes() {
    const includeSelector = '[data-include]';
    const nodes = Array.from(document.querySelectorAll(includeSelector));
    if (!nodes.length) return;
    await Promise.all(nodes.map(async el => {
      const url = el.getAttribute('data-include');
      try {
        const res = await fetch(url);
        if (!res.ok) throw new Error(res.statusText);
        const text = await res.text();
        const template = document.createElement('template');
        template.innerHTML = text;
        const fragment = template.content;
        // adjust relative paths for assets and page links when included from /pages/
        fragment.querySelectorAll('[href], [src]').forEach(node => {
          ['href','src'].forEach(attr => {
            if (!node.hasAttribute(attr)) return;
            const original = node.getAttribute(attr);

            // leave absolute URLs and anchors untouched
            if (/^(https?:|\/|#)/.test(original)) return;

            // compute useful bases
            const includeUrl = new URL(url, document.baseURI);
            const includeDir = includeUrl.pathname.substring(0, includeUrl.pathname.lastIndexOf('/') + 1);
            const docUrl = new URL(document.location.href);
            const docDir = docUrl.pathname.substring(0, docUrl.pathname.lastIndexOf('/') + 1);

            // find common prefix between include location and current document to infer site root
            const includeParts = includeDir.split('/');
            const docParts = docDir.split('/');
            let i = 0;
            while (i < includeParts.length && i < docParts.length && includeParts[i] === docParts[i]) i++;
            const baseRoot = includeParts.slice(0, i).join('/') || '/';

            let newVal;
            if (original.startsWith('./') || original.startsWith('../')) {
              // explicit relative paths should resolve relative to the include file
              const resolved = new URL(original, includeUrl);
              newVal = resolved.pathname + resolved.search + resolved.hash;
            } else {
              // treat plain paths (e.g. "assets/..." or "pages/...") as site-root relative
              newVal = (baseRoot.endsWith('/') ? baseRoot : baseRoot + '/') + original;
            }

            node.setAttribute(attr, newVal);
          });
        });
        el.replaceWith(fragment);
      } catch (err) {
        console.error('Failed to load include', url, err);
      }
    }));
    if (typeof ensureFeather === 'function') {
      ensureFeather().then(() => { try { if (window.feather && feather.replace) feather.replace(); } catch (e) {} }).catch(()=>{});
    } else if (window.feather && feather.replace) {
      try { feather.replace(); } catch (e) {}
    }
  }

  // wait for includes to be loaded so subsequent initialization can bind to elements inside them
  await loadIncludes();

  const html = document.documentElement;

  function getPreferredTheme() {
    const savedTheme = localStorage.getItem('theme');
    if (savedTheme) return savedTheme;
    return window.matchMedia && window.matchMedia('(prefers-color-scheme: light)').matches ? 'light' : 'dark';
  }

  // Apply preferred theme
  try {
    html.setAttribute('data-theme', getPreferredTheme());
  } catch (e) {}

  // Theme toggle (robust)
  const themeToggle = document.getElementById('theme-toggle');
  if (themeToggle) {
    // sync aria state
    themeToggle.setAttribute('aria-pressed', html.getAttribute('data-theme') === 'dark' ? 'false' : 'true');

    themeToggle.addEventListener('click', () => {
      const currentTheme = html.getAttribute('data-theme');
      const newTheme = currentTheme === 'dark' ? 'light' : 'dark';
      html.setAttribute('data-theme', newTheme);
      localStorage.setItem('theme', newTheme);
      themeToggle.setAttribute('aria-pressed', newTheme === 'dark' ? 'false' : 'true');
    });
  }

  // Navbar scroll effect
  const navbar = document.getElementById('navbar');
  function updateNavbarOnScroll() {
    if (!navbar) return;
    navbar.classList.toggle('scrolled', window.scrollY > 50);
  }
  window.addEventListener('scroll', updateNavbarOnScroll);
  window.addEventListener('load', updateNavbarOnScroll);

  // Mobile menu
  const mobileToggle = document.getElementById('mobile-toggle');
  const navLinks = document.getElementById('nav-links');

  // mobile menu initialization (debug logs removed)

  // create a toggle function that is safe even if elements are added later
  const toggleMenu = () => {
    const mt = document.getElementById('mobile-toggle');
    const nl = document.getElementById('nav-links');
    // console.log('[DEBUG] toggleMenu called', { mt: !!mt, nl: !!nl, mtClass: mt ? mt.className : null, nlClass: nl ? nl.className : null });
    if (!mt || !nl) {
      // elements missing: abort toggle
      // console.log('[DEBUG] toggleMenu aborted: missing elements', { mt, nl });
      return;
    }
    mt.classList.toggle('active');
    nl.classList.toggle('active');
    // console.log('[DEBUG] toggleMenu toggled', { mtClass: mt.className, nlClass: nl.className });
    const expanded = nl.classList.contains('active') ? 'true' : 'false';
    mt.setAttribute('aria-expanded', expanded);
  };

  // |||||||||||||| ça fait buguer le menu mobile ||||||||||||||
  // direct binding if elements exist
  // if (mobileToggle && navLinks) {
  //   if (!mobileToggle.hasAttribute('tabindex')) mobileToggle.setAttribute('tabindex', '0');
  //   mobileToggle.setAttribute('aria-expanded', navLinks.classList.contains('active') ? 'true' : 'false');

  //   mobileToggle.addEventListener('click', (e) => {
  //     console.log('[DEBUG] mobileToggle click handler fired', e.target, e);
  //     e.preventDefault();
  //     toggleMenu();
  //   });

  //   mobileToggle.addEventListener('keydown', (e) => {
  //     if (e.key === 'Enter' || e.key === ' ') {
  //       console.log('[DEBUG] mobileToggle keydown:', e.key);
  //       e.preventDefault();
  //       toggleMenu();
  //     }
  //   });

  //   navLinks.querySelectorAll('a').forEach(link => {
  //     link.addEventListener('click', () => {
  //       console.log('[DEBUG] nav link clicked in mobile menu', link.getAttribute('href'));
  //       // collapse on link click
  //       const mt = document.getElementById('mobile-toggle');
  //       const nl = document.getElementById('nav-links');
  //       if (mt && nl) {
  //         mt.classList.remove('active');
  //         nl.classList.remove('active');
  //         mt.setAttribute('aria-expanded', 'false');
  //       }
  //     });
  //   });
  // }

  // Global delegation: catch clicks anywhere on page for '#mobile-toggle' (works even if element is replaced)
  document.addEventListener('click', (e) => {
    const mt = e.target.closest ? e.target.closest('#mobile-toggle') : null;
    if (mt) {
      // console.log('[DEBUG] delegated click caught for #mobile-toggle', e.target);
      e.preventDefault();
      toggleMenu();
    }
  });

  // expose helper for console debugging
  window.toggleMobileMenu = toggleMenu;

  // Smooth scroll for anchor links
  document.querySelectorAll('a[href^="#"]').forEach(anchor => {
    anchor.addEventListener('click', function (e) {
      const href = this.getAttribute('href');
      if (!href || href === '#') return;
      const target = document.querySelector(href);
      if (target) {
        e.preventDefault();
        target.scrollIntoView({ behavior: 'smooth', block: 'start' });
      }
    });
  });

  // Highlight active nav link based on current URL
  function normalizePath(path) {
    if (!path) return '/';
    // treat both '/' and '/index.html' as root
    if (path.endsWith('index.html')) {
      const p = path.slice(0, -'index.html'.length);
      return p === '' ? '/' : p;
    }
    return path.endsWith('/') ? path : path;
  }

  function setActiveNavLink() {
    const links = document.querySelectorAll('#nav-links a[href]');
    if (!links.length) return;
    const currentPath = normalizePath(window.location.pathname);
    const currentHash = window.location.hash || '';

    let bestMatch = null;
    let bestScore = -1;

    links.forEach(link => {
      const href = link.getAttribute('href');
      let linkUrl;
      try {
        linkUrl = new URL(href, document.location.href);
      } catch (e) {
        return;
      }
      const linkPath = normalizePath(linkUrl.pathname);
      const linkHash = linkUrl.hash || '';

      let score = 0;
      if (linkPath === currentPath) score += 2;
      if (linkHash && linkHash === currentHash) score += 4;
      // Prefer exact hash matches, then exact path matches
      if (score > bestScore) {
        bestScore = score;
        bestMatch = link;
      }
    });

    // Fallback: if on root (/) and there is an index link, pick it
    if (!bestMatch) {
      links.forEach(link => {
        if (!bestMatch && /index\.html$|\/$/.test(link.getAttribute('href') || '')) {
          bestMatch = link;
        }
      });
    }

    links.forEach(l => { l.classList.remove('active'); l.removeAttribute('aria-current'); });
    if (bestMatch) { bestMatch.classList.add('active'); bestMatch.setAttribute('aria-current', 'page'); }
  }

  // initialize and listen for navigation/hash changes
  setActiveNavLink();
  window.addEventListener('hashchange', setActiveNavLink);
  window.addEventListener('popstate', setActiveNavLink);

  // Home page: observe sections so #apropos and #contact become active when visible,
  // and revert to "Accueil" when neither section is in view.
  let homeSectionObserver = null;
  let homeVisibility = {};

  function initHomeSectionObserver() {
    // clean existing observer
    if (homeSectionObserver) {
      homeSectionObserver.disconnect();
      homeSectionObserver = null;
      homeVisibility = {};
    }

    // Instead of requiring a strict '/' path, detect whether the current document
    // actually contains any sections referenced by nav links (e.g. #apropos, #contact).
    const links = Array.from(document.querySelectorAll('#nav-links a[href]'));
    const sectionLinks = links.filter(link => {
      try {
        const u = new URL(link.getAttribute('href'), document.location.href);
        if (!u.hash) return false;
        return !!document.querySelector(u.hash);
      } catch (e) {
        return false;
      }
    });

    if (!sectionLinks.length) return;

    const sections = sectionLinks.map(link => {
      const hash = new URL(link.getAttribute('href'), document.location.href).hash;
      const el = document.querySelector(hash);
      return el ? { id: el.id, el, link } : null;
    }).filter(Boolean);

    if (!sections.length) return;

    // setup observer
    homeSectionObserver = new IntersectionObserver((entries) => {
      entries.forEach(entry => {
        homeVisibility[entry.target.id] = entry.intersectionRatio || 0;
      });

      // pick the section with highest intersection ratio
      let bestId = null; let bestRatio = 0;
      Object.entries(homeVisibility).forEach(([id, ratio]) => {
        if (ratio > bestRatio) { bestRatio = ratio; bestId = id; }
      });

      const navLinks = Array.from(document.querySelectorAll('#nav-links a[href]'));
      // if a section is sufficiently visible, activate its link
      if (bestId && bestRatio > 0.15) {
        const targetLink = navLinks.find(l => {
          try {
            return new URL(l.getAttribute('href'), document.location.href).hash === '#' + bestId;
          } catch (e) { return false; }
        });
        if (targetLink) {
          navLinks.forEach(l => { l.classList.remove('active'); l.removeAttribute('aria-current'); });
          targetLink.classList.add('active');
          targetLink.setAttribute('aria-current', 'page');
          return;
        }
      }

      // fallback: set Accueil active when no section is visible
      const indexLink = Array.from(navLinks).find(l => /index\.html$|\/$/.test(l.getAttribute('href') || ''));
      navLinks.forEach(l => { l.classList.remove('active'); l.removeAttribute('aria-current'); });
      if (indexLink) { indexLink.classList.add('active'); indexLink.setAttribute('aria-current', 'page'); }

    }, { root: null, threshold: [0, 0.15, 0.3, 0.6] });

    sections.forEach(s => {
      homeVisibility[s.id] = 0;
      homeSectionObserver.observe(s.el);
    });
  }

  // initialize observer on load and update when navigation changes
  initHomeSectionObserver();
  window.addEventListener('resize', () => { if (homeSectionObserver) initHomeSectionObserver(); });
  // re-init observer when URL path changes (i.e., leave/enter index)
  const originalSetActive = setActiveNavLink;
  function wrappedSetActive() {
    // if leaving index, disconnect observer
    const path = normalizePath(window.location.pathname);
    if (path !== '/') {
      if (homeSectionObserver) { homeSectionObserver.disconnect(); homeSectionObserver = null; homeVisibility = {}; }
      originalSetActive();
      return;
    }
    // on index, ensure observer is active and let it control the highlight where possible
    initHomeSectionObserver();
    originalSetActive();
  }

  // replace handlers so navigation updates use our wrapped variant
  window.removeEventListener('hashchange', setActiveNavLink);
  window.removeEventListener('popstate', setActiveNavLink);
  window.addEventListener('hashchange', wrappedSetActive);
  window.addEventListener('popstate', wrappedSetActive);

  // Reveal on scroll
  const revealElements = document.querySelectorAll('.reveal');
  function revealOnScroll() {
    if (!revealElements.length) return;
    revealElements.forEach(el => {
      const elementTop = el.getBoundingClientRect().top;
      if (elementTop < window.innerHeight - 100) {
        el.classList.add('active');
      }
    });
  }
  window.addEventListener('scroll', revealOnScroll);
  window.addEventListener('load', revealOnScroll);

  // Contact form (if exists)
  const contactForm = document.getElementById('contact-form');
  if (contactForm) {
    contactForm.addEventListener('submit', function (e) {
      e.preventDefault();
      alert('Merci pour votre message ! Nous vous répondrons très bientôt.');
      this.reset();
    });
  }
});