// --- GLOBAL ADMIN CONFIG CHECKER ---
(function() {
    try {
        const configStr = localStorage.getItem('col_admin_config');
        if (configStr) {
            const config = JSON.parse(configStr);
            const path = window.location.pathname.split('/').pop() || 'index.html';
            const status = config.pages[path] || '200';
            
            if (status === '503') {
                document.write('<div style="display:flex; height:100vh; width:100vw; background:#0f172a; color:#fff; flex-direction:column; justify-content:center; align-items:center; font-family:sans-serif; text-align:center; padding:20px;"> <h1 style="font-size:5rem; margin:0; color:#38bdf8;">503</h1> <h2 style="margin:10px 0;">System Maintenance</h2> <p style="color:#cbd5e1;">Class Of Learners is currently undergoing upgrades. Please check back later.</p> </div>');
                window.stop();
            } else if (status === '404') {
                document.write('<div style="display:flex; height:100vh; width:100vw; background:#0f172a; color:#fff; flex-direction:column; justify-content:center; align-items:center; font-family:sans-serif; text-align:center; padding:20px;"> <h1 style="font-size:5rem; margin:0; color:#ef4444;">404</h1> <h2 style="margin:10px 0;">Page Not Found</h2> <p style="color:#cbd5e1;">The requested directory has been removed or does not exist.</p> <a href="index.html" style="margin-top:20px; color:#38bdf8; text-decoration:none; font-weight:bold;">Return Home</a></div>');
                window.stop();
            }
        }
    } catch(e) {}
})();


---SCRIPT---


    (function(){
        try {
            if (localStorage.getItem('theme') === 'dark') {
                document.body.classList.add('dark-mode');
            }
        } catch(e) {}
    })();


---SCRIPT---


    function toggleMenu() { document.querySelector('.nav-links').classList.toggle('active'); }
    
    // --- GLOBAL ACCOUNT LOGIC (STRICT GOOGLE ONLY) ---
    var Storage = { get: k=>{try{return localStorage.getItem(k);}catch(e){return null;}}, set: (k,v)=>{try{localStorage.setItem(k,v);}catch(e){}} };
    var GOOGLE_CLIENT_ID = '500448449044-hv2rp3k0lsok9ara1bred87c75lnsp7l.apps.googleusercontent.com';
    var curUser = null; var googleAccessToken = null;
    function toast(msg, cls){ let t=document.getElementById('toast'); if(t){t.textContent=msg; t.className='toast '+(cls||''); t.classList.add('show'); setTimeout(()=>t.classList.remove('show'),3000);} }

    function gSignIn() {
        toast('Redirecting to Google...', '');
        const redirectUri = window.location.href.split('#')[0].split('?')[0]; 
        const scope = encodeURIComponent('https://www.googleapis.com/auth/drive.appdata https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/userinfo.email');
        const authUrl = `https://accounts.google.com/o/oauth2/v2/auth?client_id=${GOOGLE_CLIENT_ID}&redirect_uri=${encodeURIComponent(redirectUri)}&response_type=token&scope=${scope}`;
        window.location.href = authUrl;
    }

    function checkURLForToken() {
        const hash = window.location.hash.substring(1);
        if (hash.includes('access_token=')) {
            const params = new URLSearchParams(hash);
            const token = params.get('access_token');
            if (token) {
                googleAccessToken = token;
                window.history.replaceState(null, null, window.location.pathname);
                fetchGoogleProfile(token);
            }
        }
    }

    async function fetchGoogleProfile(token) {
        try {
            const r = await fetch('https://www.googleapis.com/oauth2/v3/userinfo', { headers: { Authorization: 'Bearer ' + token } });
            if (r.ok) {
                const info = await r.json();
                let savedName = info.name;
                const existing = Storage.get('qrs_user');
                if(existing) {
                    try {
                        const parsed = JSON.parse(existing);
                        if(parsed.email === info.email && parsed.name) savedName = parsed.name;
                    } catch(e){}
                }

                curUser = { name: savedName, email: info.email, picture: info.picture, google: true };
                Storage.set('qrs_user', JSON.stringify(curUser));
                updatePUI();
                closeMo();
                toast('✅ Authenticated: ' + savedName, 'green');

                if(typeof performUpload === 'function' && Storage.get('hf_redirect_intent') === 'upload') {
                    Storage.set('hf_redirect_intent', '');
                    performUpload();
                }
                if(typeof performFetch === 'function' && Storage.get('hf_redirect_intent') === 'fetch') {
                    Storage.set('hf_redirect_intent', '');
                    performFetch();
                }
            } else {
                toast('Authentication failed.', '');
            }
        } catch (e) {
            toast('Network error.', '');
        }
    }

    function loadUser(){ const u=Storage.get('qrs_user'); if(u){ try{ curUser=JSON.parse(u); updatePUI(); }catch(e){} } }
    
    function updatePUI(){ 
      const nlb=document.getElementById('navLoginBtn'), nup=document.getElementById('navUserProfile'); 
      if(!curUser){ if(nlb) nlb.style.display='flex'; if(nup) nup.style.display='none'; return; } 
      if(nlb) nlb.style.display='none'; if(nup) nup.style.display='flex'; 
      const nun=document.getElementById('navUserName'); if(nun) nun.textContent=curUser.name.split(' ')[0]; 
      const navAv=document.getElementById('navUserAv'); 
      if(curUser.picture){ if(navAv) navAv.innerHTML=`<img src="${curUser.picture}" alt="${curUser.name}" referrerpolicy="no-referrer" style="width:100%;height:100%;border-radius:50%;object-fit:cover;" loading="lazy">`; } 
      else { if(navAv){ navAv.innerHTML=''; navAv.textContent=curUser.name.charAt(0).toUpperCase(); } } 

      // Feedback form integration
      const fbName = document.getElementById('fbName');
      const fbEmail = document.getElementById('fbEmail');
      if (curUser && fbName) fbName.value = curUser.name;
      if (curUser && fbEmail && curUser.email) fbEmail.value = curUser.email;
    }
    
    function openLogin(){ 
        const mo=document.getElementById('loginMo'); if(mo) mo.classList.add('open'); 
        const mt=document.getElementById('moAuthTitle');
        const mSub=document.getElementById('moAuthSub');
        const mn=document.getElementById('miName'); 
        const me=document.getElementById('miEmail'); 
        const gBtn=document.getElementById('gSignInBtn');
        const loggedInPanel=document.getElementById('loggedInPanel');

        if(curUser){ 
            if(mt) mt.textContent = 'Google Account'; 
            if(mSub) mSub.textContent = 'Manage your synced profile.';
            if(gBtn) gBtn.style.display = 'none';
            if(loggedInPanel) loggedInPanel.style.display = 'block';
            
            if(mn) mn.value = curUser.name; 
            if(me) me.value = curUser.email || ''; 
        } else { 
            if(mt) mt.textContent='Authenticate'; 
            if(mSub) mSub.textContent='Unlock dashboard storage and cloud sync.';
            if(gBtn) gBtn.style.display = 'flex';
            if(loggedInPanel) loggedInPanel.style.display = 'none';
        } 
    }

    function closeMo(){ const mo=document.getElementById('loginMo'); if(mo) mo.classList.remove('open'); }
    
    function updateUsername(){
        const mn=document.getElementById('miName');
        if(!mn) return;
        const n=mn.value.trim(); if(!n){toast('Username cannot be empty.','');return;}
        if(curUser) {
            curUser.name = n;
            Storage.set('qrs_user',JSON.stringify(curUser));
            updatePUI();
            closeMo();
            toast('✅ Username Updated','green');
        }
    }

    function doLogout() {
        curUser = null;
        googleAccessToken = null;
        Storage.set('qrs_user', '');
        updatePUI();
        closeMo();
        toast('Logged out successfully.', '');
        const fbForm = document.getElementById('fbForm');
        if(fbForm) fbForm.reset();
    }
    
    window.onclick = e => { if (!e.target.matches('.dropdown-btn') && !e.target.closest('.dropdown-btn')) document.querySelectorAll('.dropdown').forEach(d => d.classList.remove('active')); };

    function initializeTheme() {
        const toggleSwitch = document.querySelector('.theme-switch input[type="checkbox"]');
        if (Storage.get('theme') === 'dark') {
            document.body.classList.add('dark-mode');
            if (toggleSwitch) toggleSwitch.checked = true;
        } else {
            document.body.classList.remove('dark-mode');
            if (toggleSwitch) toggleSwitch.checked = false;
        }
    }

    function toggleTheme(element) {
        if (element.checked) {
            document.body.classList.add('dark-mode');
            Storage.set('theme', 'dark');
        } else {
            document.body.classList.remove('dark-mode');
            Storage.set('theme', 'light');
        }
    }

    window.addEventListener('load', function() { 
        initializeTheme(); 
        loadUser(); 
        checkURLForToken(); 
        const lm=document.getElementById('loginMo'); if(lm) lm.addEventListener('click',function(e){if(e.target===this)closeMo();}); 
    });