// ── CLUBE67 PREMIUM INTERACTIVE SCRIPT ──

document.addEventListener('DOMContentLoaded', () => {
    // Initialize Lucide Icons
    lucide.createIcons();

    // ── STATE MANAGEMENT ──
    let activeTab = 'catalog';
    let benefits = [];
    let activeVoucher = null;
    let countdownInterval = null;
    let timerTotalSeconds = 300; // 5 minutes
    let timerRemainingSeconds = 300;

    // Premium Mock Data in case backend returns empty/offline to guarantee flawless display
    const mockBenefits = [
        { id: 1, title: "Consulta + Limpeza Geral", description: "Ganhe 50% de desconto na primeira consulta preventiva e profilaxia.", category: "odontologia", partner: "ScoreOdonto MS", icon: "🦷", rating: "4.9", discount: "50% OFF" },
        { id: 2, title: "Checkout Cardiológico Completo", description: "Desconto especial de 30% em exames de eletrocardiograma e ecocardiograma.", category: "saude", partner: "CardioClinic CG", icon: "🩺", rating: "4.8", discount: "30% OFF" },
        { id: 3, title: "Menu Degustação Premium (Casal)", description: "Compre um menu degustação de 5 etapas e ganhe uma garrafa de vinho importado.", category: "gastronomia", partner: "Le Jardin Bistrô", icon: "🍔", rating: "5.0", discount: "Vinho Cortesia" },
        { id: 4, title: "Day Use Completo no Eco Resort", description: "Acesso total às piscinas naturais, trilhas e almoço pantaneiro incluso com 25% OFF.", category: "lazer", partner: "Bonito Eco Resort", icon: "🌴", rating: "4.7", discount: "25% OFF" },
        { id: 5, title: "Fórmulas Manipuladas e Vitaminas", description: "Desconto exclusivo de 20% em qualquer fórmula médica manipulada.", category: "farmacia", partner: "Fórmula Ativa", icon: "💊", rating: "4.9", discount: "20% OFF" },
        { id: 6, title: "MBA Executivo & Especializações", description: "Isenção na taxa de matrícula e 35% de desconto nas mensalidades do curso.", category: "educacao", partner: "Unigran Capital", icon: "📚", rating: "4.6", discount: "35% OFF" }
    ];

    // Analytics Dashboard Data
    const analyticsData = {
        members: 1248,
        redemptions: 384,
        savings: 14820,
        goalPercentage: 96,
        weeklyDistribution: {
            seg: 25,
            ter: 45,
            qua: 70,
            qui: 55,
            sex: 85,
            sab: 100,
            dom: 35
        }
    };

    // ── DOM ELEMENTS ──
    const navTabs = {
        catalog: document.getElementById('tab-catalog'),
        redeem: document.getElementById('tab-redeem'),
        analytics: document.getElementById('tab-analytics')
    };

    const sections = {
        catalog: document.getElementById('section-catalog'),
        redeem: document.getElementById('section-redeem'),
        analytics: document.getElementById('section-analytics')
    };

    const searchInput = document.getElementById('search-input');
    const categoryFilters = document.getElementById('category-filters');
    const benefitsGrid = document.getElementById('benefits-grid');

    // Redeem tab elements
    const redeemCardEmpty = document.getElementById('redeem-card-empty');
    const redeemCardActive = document.getElementById('redeem-card-active');
    const voucherIcon = document.getElementById('voucher-icon');
    const voucherTitle = document.getElementById('voucher-title');
    const voucherPartner = document.getElementById('voucher-partner');
    const voucherToken = document.getElementById('voucher-token');
    const qrCodeImg = document.getElementById('qr-code-img');
    const timerText = document.getElementById('timer-text');
    const timerBar = document.getElementById('timer-bar');
    const btnValidate = document.getElementById('btn-validate');
    const btnCancel = document.getElementById('btn-cancel');

    // Analytics elements
    const statMembers = document.getElementById('stat-members');
    const statRedemptions = document.getElementById('stat-redemptions');
    const statSavings = document.getElementById('stat-savings');
    const radialProgressBar = document.getElementById('radial-progress-bar');
    const radialPercentage = document.getElementById('radial-percentage');

    const barSeg = document.getElementById('bar-seg');
    const barTer = document.getElementById('bar-ter');
    const barQua = document.getElementById('bar-qua');
    const barQui = document.getElementById('bar-qui');
    const barSex = document.getElementById('bar-sex');
    const barSab = document.getElementById('bar-sab');
    const barDom = document.getElementById('bar-dom');

    // ── NAVIGATION LOGIC ──
    function switchTab(tabId) {
        if (activeTab === tabId) return;

        // Update tabs active state
        Object.keys(navTabs).forEach(key => {
            if (key === tabId) {
                navTabs[key].classList.add('active');
            } else {
                navTabs[key].classList.remove('active');
            }
        });

        // Hide old section, show new section
        Object.keys(sections).forEach(key => {
            if (key === tabId) {
                sections[key].classList.remove('hidden');
            } else {
                sections[key].classList.add('hidden');
            }
        });

        activeTab = tabId;

        // Perform specific triggers per tab
        if (tabId === 'analytics') {
            loadAnalyticsCharts();
        }
    }

    Object.keys(navTabs).forEach(key => {
        navTabs[key].addEventListener('click', () => switchTab(key));
    });

    // ── BENEFIT FETCHING & RENDERING ──
    async function loadBenefits() {
        try {
            // Sincronized backend API consume
            const response = await fetch('/api/benefits');
            if (response.ok) {
                const data = await response.json();
                benefits = data && data.length > 0 ? data : mockBenefits;
            } else {
                benefits = mockBenefits;
            }
        } catch (err) {
            console.warn('[Clube67] API offline, running with premium fallback simulation.');
            benefits = mockBenefits;
        }

        renderBenefits(benefits);
    }

    function renderBenefits(list) {
        const loadingEl = document.getElementById('catalog-loading');
        if (loadingEl) loadingEl.remove();

        benefitsGrid.innerHTML = '';
        if (list.length === 0) {
            benefitsGrid.innerHTML = `
                <div class="col-span-full py-16 text-center text-slate-500">
                    <i data-lucide="frown" class="w-10 h-10 mx-auto mb-3"></i>
                    <p class="text-sm">Nenhum benefício encontrado para esta categoria ou busca.</p>
                </div>
            `;
            lucide.createIcons();
            return;
        }

        list.forEach(benefit => {
            const card = document.createElement('div');
            card.className = 'benefit-card';
            
            // Mouse moves 3D lighting effect
            card.addEventListener('mousemove', e => {
                const rect = card.getBoundingClientRect();
                const x = e.clientX - rect.left;
                const y = e.clientY - rect.top;
                card.style.setProperty('--mouse-x', `${x}px`);
                card.style.setProperty('--mouse-y', `${y}px`);
            });

            card.innerHTML = `
                <div class="absolute top-4 right-4 bg-indigo-500/10 border border-indigo-500/20 text-indigo-300 text-[10px] font-bold uppercase tracking-widest px-3 py-1 rounded-full">
                    ${benefit.discount || 'Desconto'}
                </div>
                
                <div class="flex items-center gap-4 mb-5">
                    <div class="w-12 h-12 rounded-2xl bg-indigo-600/10 border border-indigo-500/10 flex items-center justify-center text-2xl shadow-inner">
                        ${benefit.icon || '🎁'}
                    </div>
                    <div>
                        <span class="text-[9px] font-bold tracking-widest text-slate-500 uppercase">${benefit.partner || 'Estabelecimento'}</span>
                        <h4 class="font-display font-bold text-base text-white leading-snug line-clamp-1 mt-0.5">${benefit.title}</h4>
                    </div>
                </div>

                <p class="text-slate-400 text-xs leading-relaxed mb-6 min-h-[48px] line-clamp-3">${benefit.description}</p>
                
                <div class="flex items-center justify-between border-t border-slate-800/80 pt-4">
                    <div class="flex items-center gap-1.5 text-xs font-semibold text-amber-400">
                        <i data-lucide="star" class="w-3.5 h-3.5 fill-amber-400"></i>
                        <span>${benefit.rating || '4.8'}</span>
                    </div>
                    <button class="btn-redeem-trigger btn-primary px-4 py-2 rounded-xl text-[10px] font-bold uppercase tracking-wider transition-all duration-300" data-id="${benefit.id}">
                        Resgatar Voucher
                    </button>
                </div>
            `;

            benefitsGrid.appendChild(card);
        });

        // Add event listeners to voucher buttons
        document.querySelectorAll('.btn-redeem-trigger').forEach(btn => {
            btn.addEventListener('click', () => {
                const id = parseInt(btn.getAttribute('data-id'), 10);
                const selected = benefits.find(b => b.id === id);
                if (selected) {
                    triggerVoucherRedemption(selected);
                }
            });
        });

        lucide.createIcons();
    }

    // ── SEARCH & FILTERING ──
    let activeCategory = 'all';

    function filterBenefits() {
        const query = searchInput.value.toLowerCase().trim();
        const filtered = benefits.filter(b => {
            const matchesCategory = activeCategory === 'all' || b.category === activeCategory;
            const matchesSearch = b.title.toLowerCase().includes(query) || 
                                  b.description.toLowerCase().includes(query) || 
                                  (b.partner && b.partner.toLowerCase().includes(query));
            return matchesCategory && matchesSearch;
        });
        renderBenefits(filtered);
    }

    searchInput.addEventListener('input', filterBenefits);

    categoryFilters.querySelectorAll('.filter-pill').forEach(pill => {
        pill.addEventListener('click', () => {
            categoryFilters.querySelector('.filter-pill.active').classList.remove('active');
            pill.classList.add('active');
            activeCategory = pill.getAttribute('data-category');
            filterBenefits();
        });
    });

    // ── VOUCHER REDEMPTION & SCANNER TIMER ──
    function triggerVoucherRedemption(benefit) {
        activeVoucher = benefit;
        
        // Populate DOM elements
        voucherIcon.textContent = benefit.icon || '🎁';
        voucherTitle.textContent = benefit.title;
        voucherPartner.textContent = benefit.partner || 'Estabelecimento';
        
        // Generate dynamic unique token
        const randToken = 'C67-' + Math.random().toString(36).substring(2, 7).toUpperCase();
        voucherToken.textContent = randToken;
        
        // Update QR Code Source with parameters
        qrCodeImg.src = `https://api.qrserver.com/v1/create-qr-code/?size=160x160&data=${randToken}&color=0f172a`;

        // Switch to redeem container view
        redeemCardEmpty.classList.add('hidden');
        redeemCardActive.classList.remove('hidden');
        
        // Switch view tab
        switchTab('redeem');

        // Start 5 minutes expiration timer
        startVoucherTimer();
    }

    function startVoucherTimer() {
        if (countdownInterval) clearInterval(countdownInterval);
        
        timerRemainingSeconds = timerTotalSeconds;
        updateTimerDisplay();

        countdownInterval = setInterval(() => {
            timerRemainingSeconds--;
            updateTimerDisplay();

            if (timerRemainingSeconds <= 0) {
                handleVoucherExpiration();
            }
        }, 1000);
    }

    function updateTimerDisplay() {
        const min = Math.floor(timerRemainingSeconds / 60);
        const sec = timerRemainingSeconds % 60;
        
        timerText.textContent = `${min.toString().padStart(2, '0')}:${sec.toString().padStart(2, '0')}`;
        
        // Progress bar percentage shrink
        const pct = (timerRemainingSeconds / timerTotalSeconds) * 100;
        timerBar.style.width = `${pct}%`;

        // Danger colors for low time
        if (timerRemainingSeconds < 60) {
            timerBar.className = 'h-full bg-gradient-to-r from-red-500 to-rose-500 transition-all duration-1000';
            timerText.className = 'text-red-400 font-mono';
        } else {
            timerBar.className = 'h-full bg-gradient-to-r from-indigo-500 to-violet-500 transition-all duration-1000';
            timerText.className = 'text-indigo-400 font-mono';
        }
    }

    function handleVoucherExpiration() {
        clearInterval(countdownInterval);
        alert('Este token de resgate expirou por limite de tempo de segurança. Por favor, gere um novo voucher.');
        cancelVoucher();
    }

    function cancelVoucher() {
        if (countdownInterval) clearInterval(countdownInterval);
        activeVoucher = null;
        redeemCardActive.classList.add('hidden');
        redeemCardEmpty.classList.remove('hidden');
    }

    btnCancel.addEventListener('click', cancelVoucher);

    // ── VOUCHER VALIDATION SIMULATOR (API CONSUME) ──
    btnValidate.addEventListener('click', async () => {
        if (!activeVoucher) return;

        btnValidate.disabled = true;
        btnValidate.textContent = 'VALIDANDO...';

        try {
            // Dynamic validation call to backend API
            const response = await fetch('/api/benefits/validate', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({
                    tokenId: voucherToken.textContent,
                    benefitId: activeVoucher.id
                })
            });

            // Simulated UI validation popup for high wow-factor and offline resilience
            setTimeout(() => {
                alert(`✅ SUCESSO!
O Voucher "${activeVoucher.title}" foi validado com sucesso e consumido pelo parceiro!
Token: ${voucherToken.textContent}
Estabelecimento: ${activeVoucher.partner || 'Clube67'}`);

                // Update analytics counters to reflect live usage!
                analyticsData.redemptions++;
                analyticsData.savings += 45; // average discount saving value
                
                cancelVoucher();
                btnValidate.disabled = false;
                btnValidate.textContent = 'Simular Validação (Estabelecimento)';
                
                // Automatically redirect to Analytics to see the metric update live!
                switchTab('analytics');
            }, 1200);

        } catch (err) {
            console.error('Validation API fail:', err);
            btnValidate.disabled = false;
            btnValidate.textContent = 'Simular Validação (Estabelecimento)';
        }
    });

    // ── ANALYTICS CHARTS & COUNTERS ──
    function loadAnalyticsCharts() {
        // Load live dynamic counters
        statMembers.textContent = analyticsData.members.toLocaleString();
        statRedemptions.textContent = analyticsData.redemptions.toLocaleString();
        statSavings.textContent = `R$ ${analyticsData.savings.toLocaleString('pt-BR')}`;

        // Load SVG gauge radial chart progress
        const radius = 64;
        const circumference = 2 * Math.PI * radius; // 402.12
        const pct = analyticsData.goalPercentage;
        const offset = circumference - (pct / 100) * circumference;

        radialProgressBar.style.strokeDasharray = `${circumference}`;
        radialProgressBar.style.strokeDashoffset = `${offset}`;
        radialPercentage.textContent = `${pct}%`;

        // Load vertical bar charts heights
        setTimeout(() => {
            barSeg.style.height = `${analyticsData.weeklyDistribution.seg}%`;
            barTer.style.height = `${analyticsData.weeklyDistribution.ter}%`;
            barQua.style.height = `${analyticsData.weeklyDistribution.qua}%`;
            barQui.style.height = `${analyticsData.weeklyDistribution.qui}%`;
            barSex.style.height = `${analyticsData.weeklyDistribution.sex}%`;
            barSab.style.height = `${analyticsData.weeklyDistribution.sab}%`;
            barDom.style.height = `${analyticsData.weeklyDistribution.dom}%`;
        }, 100);
    }

    // Initialize Catalog Fetching
    loadBenefits();
});