@extends('frontend.layouts.app')

@section('title', 'My Cart - ShopNow')

@section('content')
<div class="container py-5">
    <h2 class="fw-bold mb-4"><i class="bi bi-cart3 me-2"></i>My Cart</h2>

    @if($carts && $carts->count() > 0)
    <div class="row g-4">
        <div class="col-lg-8">
            @foreach($carts as $cart)
            <div class="card border-0 shadow-sm mb-3 p-3" style="border-radius:12px;">
                <div class="row align-items-center g-3">
                    <div class="col-3 col-md-2">
                        <img src="{{ optional($cart->product)->image ? asset('storage/'.optional($cart->product)->image) : 'https://via.placeholder.com/80?text=P' }}"
                             class="img-fluid rounded" alt="{{ optional($cart->product)->name }}" style="height:70px; object-fit:cover;">
                    </div>
                    <div class="col-6 col-md-6">
                        <h6 class="fw-semibold mb-1">
                            <a href="{{ route('products.show', $cart->product_id) }}" class="text-decoration-none text-dark">
                                {{ optional($cart->product)->name }}
                            </a>
                        </h6>
                        @if($cart->variant)
                        <small class="text-muted d-block">Variant: {{ $cart->variant->name }}</small>
                        @endif
                        @if($cart->color)
                        <small class="text-muted d-block">Color: {{ $cart->color->name }}</small>
                        @endif
                        @php
                            $basePrice = optional($cart->variant)->price ?? optional($cart->product)->price ?? 0;
                            $currentPrice = optional($cart->variant)->final_price ?? optional($cart->product)->final_price ?? 0;
                            // Fallback if final_price is not set
                            if ($currentPrice <= 0) $currentPrice = $basePrice;
                        @endphp
                        <div class="d-flex align-items-center gap-2">
                            <span class="fw-bold text-primary">Rs. {{ number_format($currentPrice, 2) }}</span>
                            @if($currentPrice < $basePrice)
                            <del class="text-muted small">Rs. {{ number_format($basePrice, 2) }}</del>
                            @endif
                        </div>
                    </div>
                    <div class="col-3 col-md-4 d-flex align-items-center justify-content-end gap-2">
                        <!-- Qty -->
                        <form action="{{ route('cart.update-qty', $cart->id) }}" method="POST">
                            @csrf
                            <div class="d-flex align-items-center gap-2">
                                <div class="input-group input-group-sm" style="width:110px;">
                                    <button type="button" class="btn btn-outline-secondary" onclick="changeQty(this, -1)">-</button>
                                    <input type="number" name="quantity" class="form-control text-center qty-input" 
                                           value="{{ $cart->quantity }}" min="1" 
                                           data-price="{{ $currentPrice }}"
                                           onchange="updateLineTotal(this)">
                                    <button type="button" class="btn btn-outline-secondary" onclick="changeQty(this, 1)">+</button>
                                </div>
                                <button type="submit" class="btn btn-sm btn-outline-primary" title="Save Quantity"><i class="bi bi-check2"></i></button>
                            </div>
                            <div class="text-end mt-2">
                                <small class="text-muted">Total:</small>
                                <span class="fw-bold line-total">Rs. {{ number_format($currentPrice * $cart->quantity, 2) }}</span>
                            </div>
                        </form>
                        <!-- Remove -->
                        <form action="{{ route('cart.remove') }}" method="POST">
                            @csrf
                            <input type="hidden" name="cart_ids[]" value="{{ $cart->id }}">
                            <button class="btn btn-sm btn-outline-danger"><i class="bi bi-trash"></i></button>
                        </form>
                    </div>
                </div>
            </div>
            @endforeach
        </div>

        <!-- Order Summary -->
        <div class="col-lg-4">
            <div class="card border-0 shadow-sm p-4" style="border-radius:14px;">
                <h5 class="fw-bold mb-3">Order Summary</h5>
                @php
                    $subtotal = $carts->sum(function($c) {
                        $p = optional($c->variant)->final_price ?? optional($c->product)->final_price ?? 0;
                        if ($p <= 0) $p = optional($c->variant)->price ?? optional($c->product)->price ?? 0;
                        return $p * $c->quantity;
                    });
                @endphp
                <div class="d-flex justify-content-between mb-2">
                    <span class="text-muted">Subtotal</span>
                    <strong class="text-dark">Rs. <span id="summarySubtotal">{{ number_format($subtotal, 2) }}</span></strong>
                </div>
                <hr>
                <div class="d-flex justify-content-between mb-3">
                    <strong>Total</strong>
                    <strong class="text-primary fs-5">Rs. <span id="summaryTotal">{{ number_format($subtotal, 2) }}</span></strong>
                </div>
                <a href="{{ route('checkout') }}" class="btn btn-primary w-100 fw-semibold">
                    Proceed to Checkout <i class="bi bi-arrow-right ms-1"></i>
                </a>
                <a href="{{ route('products.index') }}" class="btn btn-outline-secondary w-100 mt-2">Continue Shopping</a>
            </div>
        </div>
    </div>
    @else
    <div class="text-center py-5">
        <i class="bi bi-cart-x fs-1 text-muted"></i>
        <h4 class="mt-3 text-muted">Your cart is empty</h4>
        <a href="{{ route('products.index') }}" class="btn btn-primary mt-3 px-5">Start Shopping</a>
    </div>
    @endif
</div>

@section('scripts')
<script>
function changeQty(btn, delta) {
    const input = btn.parentElement.querySelector('input[name="quantity"]');
    let val = parseInt(input.value) + delta;
    if (val < 1) val = 1;
    input.value = val;
    updateLineTotal(input);
}

function updateLineTotal(input) {
    const price = parseFloat(input.getAttribute('data-price'));
    const qty = parseInt(input.value);
    const total = price * qty;
    
    const container = input.closest('form');
    const totalSpan = container.querySelector('.line-total');
    if (totalSpan) {
        totalSpan.innerText = 'Rs. ' + formatNumber(total);
    }

    updateCartSummary();
}

function updateCartSummary() {
    let subtotal = 0;
    document.querySelectorAll('.qty-input').forEach(input => {
        const price = parseFloat(input.getAttribute('data-price'));
        const qty = parseInt(input.value);
        subtotal += price * qty;
    });

    const subtotalEl = document.getElementById('summarySubtotal');
    const totalEl = document.getElementById('summaryTotal');
    
    if (subtotalEl) subtotalEl.innerText = formatNumber(subtotal);
    if (totalEl) totalEl.innerText = formatNumber(subtotal);
}

function formatNumber(num) {
    return num.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
}
</script>
@endsection
@endsection