@extends('layouts.app')

@section('title', 'Keranjang Belanja | Trisna Monel')

@section('extra_css')
    <style>
        .cart-section {
            padding: 140px 0 6rem;
            background: #fafafa;
            min-height: 80vh;
        }

        .cart-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 2.5rem;
            align-items: start;
        }

        @media (max-width: 991px) {
            .cart-grid {
                grid-template-columns: 1fr;
            }
        }

        .cart-card {
            background: white;
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .cart-item {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid #f0f0f0;
            transition: all 0.3s ease;
        }

        .cart-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .cart-item:first-child {
            padding-top: 0;
        }

        .cart-item-img-wrapper {
            width: 100px;
            height: 100px;
            border-radius: 12px;
            overflow: hidden;
            background: #f9f9f9;
            flex-shrink: 0;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .cart-item-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .cart-item:hover .cart-item-img {
            transform: scale(1.05);
        }

        .cart-item-details {
            flex-grow: 1;
        }

        .cart-item-category {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--color-secondary);
            font-weight: 700;
            margin-bottom: 0.25rem;
        }

        .cart-item-title {
            font-family: 'Outfit', sans-serif;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 0.5rem;
        }

        .cart-item-variation {
            display: inline-block;
            font-size: 0.75rem;
            background: #f0f0f0;
            color: #555;
            padding: 2px 8px;
            border-radius: 4px;
            margin-bottom: 0.5rem;
        }

        .cart-item-price {
            font-family: 'Outfit', sans-serif;
            font-weight: 700;
            color: var(--color-accent);
            font-size: 1.05rem;
        }

        .cart-item-actions {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            flex-shrink: 0;
        }

        @media (max-width: 576px) {
            .cart-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
                position: relative;
            }
            .cart-item-actions {
                width: 100%;
                justify-content: space-between;
            }
            .cart-item-remove-btn {
                position: absolute;
                top: 1rem;
                right: 0;
            }
        }

        /* Quantity input styling */
        .quantity-control {
            display: flex;
            align-items: center;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            overflow: hidden;
            background: #fafafa;
        }

        .quantity-btn {
            background: none;
            border: none;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: #555;
            transition: all 0.3s;
            font-size: 0.8rem;
        }

        .quantity-btn:hover {
            background: #f0f0f0;
            color: var(--color-secondary);
        }

        .quantity-input {
            width: 45px;
            height: 32px;
            border: none;
            border-left: 1px solid #e0e0e0;
            border-right: 1px solid #e0e0e0;
            text-align: center;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            background: white;
            outline: none;
        }

        .cart-item-remove-btn {
            background: none;
            border: none;
            color: #ff5252;
            cursor: pointer;
            font-size: 1.1rem;
            padding: 0.5rem;
            border-radius: 50%;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .cart-item-remove-btn:hover {
            background: rgba(255, 82, 82, 0.08);
            transform: scale(1.05);
        }

        /* Sticky Summary Card */
        .summary-card {
            background: white;
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 110px;
        }

        .summary-title {
            font-family: 'Outfit', sans-serif;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--color-primary);
            border-bottom: 1px solid #f0f0f0;
            padding-bottom: 1rem;
        }

        .summary-row {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            font-size: 0.95rem;
            color: var(--color-text-muted);
        }

        .summary-row.total {
            border-top: 1px dashed #e0e0e0;
            padding-top: 1.25rem;
            margin-top: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            font-size: 1.15rem;
        }

        .btn-checkout {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.75rem;
            width: 100%;
            padding: 1.1rem;
            background: var(--grad-gold);
            color: white;
            border: none;
            border-radius: 12px;
            font-family: 'Outfit', sans-serif;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            font-size: 0.85rem;
            cursor: pointer;
            box-shadow: 0 10px 20px rgba(176, 130, 86, 0.15);
            transition: all 0.3s;
            margin-top: 1.5rem;
        }

        .btn-checkout:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px rgba(176, 130, 86, 0.3);
            filter: brightness(1.05);
        }

        /* Empty State */
        .empty-cart-container {
            text-align: center;
            padding: 5rem 2rem;
        }

        .empty-cart-icon {
            font-size: 4rem;
            color: #ddd;
            margin-bottom: 1.5rem;
        }

        .btn-shop {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.9rem 2rem;
            background: var(--color-primary);
            color: white;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 1.5rem;
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            transition: all 0.3s;
        }

        .btn-shop:hover {
            background: var(--color-secondary);
            transform: translateY(-2px);
            box-shadow: 0 15px 30px rgba(176, 130, 86, 0.2);
        }

        /* Loading Spinner */
        .cart-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
            border-radius: 20px;
            z-index: 10;
        }

        .cart-card-wrapper {
            position: relative;
        }

        .cart-card-wrapper.loading .cart-overlay {
            opacity: 1;
            pointer-events: all;
        }

        .spinner {
            border: 4px solid rgba(176, 130, 86, 0.1);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border-left-color: var(--color-secondary);
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
    </style>
@endsection

@section('content')
    <section class="cart-section">
        <div class="container">
            <h1 class="font-heading mb-4 text-center" style="font-size: 2.2rem; font-weight: 800; letter-spacing: -0.01em;">
                Keranjang <strong>Belanja</strong>
            </h1>
            <p class="text-center text-muted mb-5">Tinjau produk monel premium pilihan Anda sebelum menyelesaikan transaksi</p>

            @if(session('success'))
                <div style="background: rgba(16, 185, 129, 0.08); border-left: 4px solid #10b981; color: #065f46; padding: 1rem; border-radius: 8px; margin-bottom: 2rem;">
                    <i class="fas fa-check-circle mr-2"></i> {{ session('success') }}
                </div>
            @endif

            @if($cartItems->isEmpty())
                <div class="cart-card">
                    <div class="empty-cart-container">
                        <div class="empty-cart-icon">
                            <i class="fas fa-shopping-basket"></i>
                        </div>
                        <h3 class="font-heading" style="font-size: 1.5rem; font-weight: 700;">Keranjang Anda Kosong</h3>
                        <p class="text-muted mt-2">Anda belum menambahkan produk monel premium ke keranjang Anda.</p>
                        <a href="{{ route('products.index') }}" class="btn-shop">
                            Mulai Belanja <i class="fas fa-chevron-right"></i>
                        </a>
                    </div>
                </div>
            @else
                <div class="cart-grid">
                    <!-- Left: Cart Items List -->
                    <div class="cart-card-wrapper" id="cartCardWrapper">
                        <div class="cart-overlay">
                            <div class="spinner"></div>
                        </div>

                        <div class="cart-card">
                            <div id="cartItemsList">
                                @foreach($cartItems as $item)
                                    <div class="cart-item" id="cartItem-{{ $item->id }}">
                                        <!-- Image -->
                                        <div class="cart-item-img-wrapper">
                                            <img src="{{ $item->product->main_image ? asset('uploads/' . $item->product->main_image) : 'https://placehold.co/400x400?text=Trisna+Monel' }}" 
                                                 alt="{{ $item->product->name }}" 
                                                 class="cart-item-img"
                                                 onerror="this.src='https://placehold.co/400x400?text=Trisna+Monel'">
                                        </div>

                                        <!-- Details -->
                                        <div class="cart-item-details">
                                            <div class="cart-item-category">{{ $item->product->category->name ?? 'Monel Premium' }}</div>
                                            <h4 class="cart-item-title">{{ $item->product->name }}</h4>
                                            
                                            @if($item->variation)
                                                <span class="cart-item-variation">Ukuran: {{ $item->variation }}</span>
                                            @endif

                                            <div class="cart-item-price">Rp {{ number_format($item->product->getPriceForVariation($item->variation), 0, ',', '.') }}</div>
                                        </div>

                                        <!-- Actions -->
                                        <div class="cart-item-actions">
                                            <!-- Quantity Control -->
                                            <div class="quantity-control">
                                                <button type="button" class="quantity-btn minus-btn" onclick="updateQty({{ $item->id }}, -1)">
                                                    <i class="fas fa-minus"></i>
                                                </button>
                                                <input type="number" 
                                                       value="{{ $item->quantity }}" 
                                                       min="1" 
                                                       class="quantity-input" 
                                                       id="qty-{{ $item->id }}" 
                                                       onchange="updateQtyInput({{ $item->id }})">
                                                <button type="button" class="quantity-btn plus-btn" onclick="updateQty({{ $item->id }}, 1)">
                                                    <i class="fas fa-plus"></i>
                                                </button>
                                            </div>

                                            <!-- Subtotal for mobile/desktop display -->
                                            <div class="font-heading" style="font-weight: 700; width: 110px; text-align: right; font-size: 1.05rem;" id="subtotal-{{ $item->id }}">
                                                Rp {{ number_format($item->product->getPriceForVariation($item->variation) * $item->quantity, 0, ',', '.') }}
                                            </div>

                                            <!-- Remove -->
                                            <button type="button" class="cart-item-remove-btn" onclick="removeCartItem({{ $item->id }})" title="Hapus Produk">
                                                <i class="far fa-trash-alt"></i>
                                            </button>
                                        </div>
                                    </div>
                                @endforeach
                            </div>
                        </div>
                    </div>

                    <!-- Right: Summary Card -->
                    <div>
                        <div class="summary-card">
                            <h3 class="summary-title">Ringkasan Belanja</h3>
                            
                            <div class="summary-row">
                                <span>Total Item</span>
                                <span id="summaryTotalItems">{{ $cartItems->sum('quantity') }}</span>
                            </div>

                            <div class="summary-row">
                                <span>Total Berat</span>
                                <span><span id="summaryTotalWeight">{{ $totalWeight }}</span> gram</span>
                            </div>

                            <div class="summary-row total">
                                <span>Subtotal</span>
                                <span>Rp <span id="summaryTotalPrice">{{ number_format($totalPrice, 0, ',', '.') }}</span></span>
                            </div>

                            <a href="{{ route('checkout.index') }}" class="btn-checkout">
                                Lanjutkan ke Checkout <i class="fas fa-arrow-right"></i>
                            </a>
                        </div>
                    </div>
                </div>
            @endif
        </div>
    </section>
@endsection

@section('extra_js')
    <script>
        function updateQty(id, change) {
            const input = document.getElementById('qty-' + id);
            let currentVal = parseInt(input.value);
            let newVal = currentVal + change;
            
            if (newVal >= 1) {
                input.value = newVal;
                sendQtyUpdate(id, newVal);
            }
        }

        function updateQtyInput(id) {
            const input = document.getElementById('qty-' + id);
            let val = parseInt(input.value);
            
            if (isNaN(val) || val < 1) {
                input.value = 1;
                val = 1;
            }
            sendQtyUpdate(id, val);
        }

        function sendQtyUpdate(id, quantity) {
            const wrapper = document.getElementById('cartCardWrapper');
            wrapper.classList.add('loading');

            fetch('{{ route("cart.update") }}', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                    'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]').getAttribute('content'),
                    'Accept': 'application/json',
                    'X-Requested-With': 'XMLHttpRequest'
                },
                body: JSON.stringify({
                    id: id,
                    quantity: quantity
                })
            })
            .then(response => response.json())
            .then(data => {
                wrapper.classList.remove('loading');
                if (data.status === 'success') {
                    // Update Item Subtotal
                    document.getElementById('subtotal-' + id).innerText = 'Rp ' + data.item_subtotal;
                    
                    // Update Summary
                    document.getElementById('summaryTotalItems').innerText = data.cart_count;
                    document.getElementById('summaryTotalWeight').innerText = data.total_weight;
                    document.getElementById('summaryTotalPrice').innerText = data.total_price;
                    
                    // Update Navbar Badge
                    const badge = document.getElementById('cartCountBadge');
                    const badgeMobile = document.getElementById('cartCountMobile');
                    
                    if (badge) {
                        badge.innerText = data.cart_count;
                        badge.style.display = data.cart_count > 0 ? 'inline-block' : 'none';
                    }
                    if (badgeMobile) {
                        badgeMobile.innerText = data.cart_count;
                    }
                }
            })
            .catch(error => {
                wrapper.classList.remove('loading');
                console.error('Error updating quantity:', error);
            });
        }

        function removeCartItem(id) {
            Swal.fire({
                title: 'Hapus Produk?',
                text: 'Apakah Anda yakin ingin menghapus produk ini dari keranjang belanja Anda?',
                icon: 'warning',
                showCancelButton: true,
                confirmButtonColor: '#111111',
                cancelButtonColor: '#B08256',
                confirmButtonText: 'Ya, Hapus!',
                cancelButtonText: 'Batal',
                background: '#ffffff',
                borderRadius: '16px'
            }).then((result) => {
                if (result.isConfirmed) {
                    const wrapper = document.getElementById('cartCardWrapper');
                    wrapper.classList.add('loading');

                    fetch('{{ route("cart.remove") }}', {
                        method: 'POST',
                        headers: {
                            'Content-Type': 'application/json',
                            'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]').getAttribute('content'),
                            'Accept': 'application/json',
                            'X-Requested-With': 'XMLHttpRequest'
                        },
                        body: JSON.stringify({
                            id: id
                        })
                    })
                    .then(response => response.json())
                    .then(data => {
                        wrapper.classList.remove('loading');
                        if (data.status === 'success') {
                            // Fade out and remove cart item element
                            const itemElement = document.getElementById('cartItem-' + id);
                            itemElement.style.opacity = 0;
                            setTimeout(() => {
                                itemElement.remove();
                                
                                // Check if cart is completely empty
                                const remainingItems = document.querySelectorAll('.cart-item');
                                if (remainingItems.length === 0) {
                                    location.reload(); // Reload to show empty state
                                }
                            }, 300);

                            // Update Summary
                            document.getElementById('summaryTotalItems').innerText = data.cart_count;
                            document.getElementById('summaryTotalWeight').innerText = data.total_weight;
                            document.getElementById('summaryTotalPrice').innerText = data.total_price;

                            // Update Navbar Badge
                            const badge = document.getElementById('cartCountBadge');
                            const badgeMobile = document.getElementById('cartCountMobile');
                            
                            if (badge) {
                                badge.innerText = data.cart_count;
                                badge.style.display = data.cart_count > 0 ? 'inline-block' : 'none';
                            }
                            if (badgeMobile) {
                                badgeMobile.innerText = data.cart_count;
                            }
                            
                            // Elegant success toast
                            Swal.fire({
                                icon: 'success',
                                title: 'Terhapus!',
                                text: 'Produk berhasil dihapus dari keranjang.',
                                confirmButtonColor: '#111111',
                                timer: 1500,
                                showConfirmButton: false
                            });
                        }
                    })
                    .catch(error => {
                        wrapper.classList.remove('loading');
                        console.error('Error removing item:', error);
                    });
                }
            });
        }
    </script>
@endsection