@extends('layouts.app')

@section('title', 'Invoice ' . $sale->invoice_number)

@section('content')
<div class="px-4 sm:px-6 lg:px-8 py-8">
    <div class="max-w-4xl mx-auto">
        <div class="mb-6 flex items-center justify-between">
            <div>
                <h1 class="text-3xl font-bold tracking-tight text-gray-900 dark:text-white">{{ $sale->invoice_number }}</h1>
                <p class="mt-2 text-sm text-gray-700 dark:text-gray-300">Invoice details</p>
            </div>
            <div class="flex gap-2">
                <a href="{{ route('sales.print', $sale->id) }}" target="_blank" class="inline-flex items-center px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-md text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700">
                    <svg class="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17 17h2a2 2 0 002-2v-4a2 2 0 00-2-2H5a2 2 0 00-2 2v4a2 2 0 002 2h2m2 4h6a2 2 0 002-2v-4a2 2 0 00-2-2H9a2 2 0 00-2 2v4a2 2 0 002 2zm8-12V5a2 2 0 00-2-2H9a2 2 0 00-2 2v4h10z"/>
                    </svg>
                    Print
                </a>
                @if($sale->payment_status != 'cancelled')
                    @if($sale->payment_status == 'paid' && !$sale->record_only)
                        <a href="{{ route('sales.edit', $sale->id) }}" class="inline-flex items-center px-4 py-2 bg-amber-600 text-white rounded-md hover:bg-amber-700" title="Mark as Record Only">
                            Mark Record Only
                        </a>
                    @elseif($sale->payment_status != 'paid')
                        <a href="{{ route('sales.edit', $sale->id) }}" class="inline-flex items-center px-4 py-2 bg-indigo-600 text-white rounded-md hover:bg-indigo-700">
                            Edit
                        </a>
                    @endif
                @endif
                <a href="{{ route('sales.index') }}" class="inline-flex items-center px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-md text-sm text-gray-700 dark:text-gray-300 hover:bg-gray-50 dark:hover:bg-gray-700">
                    Back
                </a>
            </div>
        </div>

        <!-- Status Badge -->
        <div class="mb-6 flex flex-wrap gap-2">
            @if($sale->payment_status == 'paid')
                <span class="px-3 py-1 text-sm font-semibold rounded-full bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-400">Paid</span>
            @elseif($sale->payment_status == 'partial')
                <span class="px-3 py-1 text-sm font-semibold rounded-full bg-yellow-100 text-yellow-800 dark:bg-yellow-900/30 dark:text-yellow-400">Partial Payment</span>
            @elseif($sale->payment_status == 'cancelled')
                <span class="px-3 py-1 text-sm font-semibold rounded-full bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-400">Cancelled</span>
            @else
                <span class="px-3 py-1 text-sm font-semibold rounded-full bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-300">Unpaid</span>
            @endif

            @if($sale->record_only)
                <span class="px-3 py-1 text-sm font-semibold rounded-full bg-amber-100 text-amber-800 dark:bg-amber-900/30 dark:text-amber-400">
                    Record Only (No Stock Deduction)
                </span>
            @endif
        </div>

        @if($sale->record_only)
            <div class="mb-6 p-4 bg-amber-50 dark:bg-amber-900/20 border border-amber-200 dark:border-amber-800 rounded-lg">
                <div class="flex items-start">
                    <svg class="h-5 w-5 text-amber-400 mt-0.5" fill="currentColor" viewBox="0 0 20 20">
                        <path fill-rule="evenodd" d="M8.257 3.099c.765-1.36 2.722-1.36 3.486 0l5.58 9.92c.75 1.334-.213 2.98-1.742 2.98H4.42c-1.53 0-2.493-1.646-1.743-2.98l5.58-9.92zM11 13a1 1 0 11-2 0 1 1 0 012 0zm-1-8a1 1 0 00-1 1v3a1 1 0 002 0V6a1 1 0 00-1-1z" clip-rule="evenodd"/>
                    </svg>
                    <div class="ml-3">
                        <h3 class="text-sm font-medium text-amber-800 dark:text-amber-200">Record Only Sale</h3>
                        <p class="mt-1 text-sm text-amber-700 dark:text-amber-300">
                            This sale was recorded for reference only. No stock was deducted from inventory.
                            @if($sale->linked_order_number)
                                <br>Linked Order: <strong>{{ $sale->linked_order_number }}</strong>
                            @endif
                            @if($sale->stock_restored)
                                <br>Stock restored on {{ \Carbon\Carbon::parse($sale->stock_restored_at)->format('d M Y H:i') }}
                            @endif
                        </p>
                    </div>
                </div>
            </div>
        @endif

        <div class="grid grid-cols-1 md:grid-cols-2 gap-6 mb-6">
            <!-- Customer Info -->
            <div class="bg-white dark:bg-gray-800 shadow rounded-lg p-6">
                <h2 class="text-sm font-medium text-gray-500 dark:text-gray-400 mb-3">BILL TO</h2>
                <p class="text-lg font-medium text-gray-900 dark:text-white">{{ $sale->customer_name }}</p>
                <p class="text-sm text-gray-600 dark:text-gray-400">{{ $sale->customer_phone }}</p>
                @if($sale->customer_email)
                    <p class="text-sm text-gray-600 dark:text-gray-400">{{ $sale->customer_email }}</p>
                @endif
                @if($sale->customer_address)
                    <p class="text-sm text-gray-600 dark:text-gray-400 mt-2">
                        {{ $sale->customer_address }}<br>
                        {{ $sale->customer_postcode }} {{ $sale->customer_city }}, {{ $sale->customer_state }}
                    </p>
                @endif
            </div>

            <!-- Invoice Info -->
            <div class="bg-white dark:bg-gray-800 shadow rounded-lg p-6">
                <h2 class="text-sm font-medium text-gray-500 dark:text-gray-400 mb-3">INVOICE DETAILS</h2>
                <dl class="space-y-2">
                    <div class="flex justify-between">
                        <dt class="text-sm text-gray-600 dark:text-gray-400">Invoice Date:</dt>
                        <dd class="text-sm text-gray-900 dark:text-white">{{ \Carbon\Carbon::parse($sale->invoice_date)->format('d M Y') }}</dd>
                    </div>
                    <div class="flex justify-between">
                        <dt class="text-sm text-gray-600 dark:text-gray-400">Payment Method:</dt>
                        <dd class="text-sm text-gray-900 dark:text-white">{{ ucfirst(str_replace('_', ' ', $sale->payment_method)) }}</dd>
                    </div>
                    <div class="flex justify-between">
                        <dt class="text-sm text-gray-600 dark:text-gray-400">Created:</dt>
                        <dd class="text-sm text-gray-900 dark:text-white">{{ \Carbon\Carbon::parse($sale->created_at)->format('d M Y H:i') }}</dd>
                    </div>
                </dl>
            </div>
        </div>

        <!-- Items -->
        <div class="bg-white dark:bg-gray-800 shadow rounded-lg overflow-hidden mb-6">
            <table class="min-w-full divide-y divide-gray-200 dark:divide-gray-700">
                <thead class="bg-gray-50 dark:bg-gray-700">
                    <tr>
                        <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Product</th>
                        <th class="px-6 py-3 text-right text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Qty</th>
                        <th class="px-6 py-3 text-right text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Price</th>
                        <th class="px-6 py-3 text-right text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">Total</th>
                    </tr>
                </thead>
                <tbody class="bg-white dark:bg-gray-800 divide-y divide-gray-200 dark:divide-gray-700">
                    @foreach($items as $item)
                        <tr>
                            <td class="px-6 py-4">
                                <div class="text-sm font-medium text-gray-900 dark:text-white">{{ $item->product_name }}</div>
                                <div class="text-xs text-gray-500">{{ $item->sku }}</div>
                            </td>
                            <td class="px-6 py-4 text-right text-sm text-gray-900 dark:text-white">{{ $item->quantity }}</td>
                            <td class="px-6 py-4 text-right text-sm text-gray-900 dark:text-white">RM {{ number_format($item->unit_price, 2) }}</td>
                            <td class="px-6 py-4 text-right text-sm text-gray-900 dark:text-white">RM {{ number_format($item->line_total, 2) }}</td>
                        </tr>
                    @endforeach
                </tbody>
            </table>
        </div>

        <!-- Totals -->
        <div class="bg-white dark:bg-gray-800 shadow rounded-lg p-6 mb-6">
            <div class="flex justify-end">
                <div class="w-64 space-y-2">
                    <div class="flex justify-between text-sm">
                        <span class="text-gray-600 dark:text-gray-400">Subtotal:</span>
                        <span class="text-gray-900 dark:text-white">RM {{ number_format($sale->subtotal, 2) }}</span>
                    </div>
                    @if($sale->discount_amount > 0)
                        <div class="flex justify-between text-sm">
                            <span class="text-gray-600 dark:text-gray-400">Discount ({{ $sale->discount_percent }}%):</span>
                            <span class="text-red-600">- RM {{ number_format($sale->discount_amount, 2) }}</span>
                        </div>
                    @endif
                    <div class="flex justify-between text-lg font-bold border-t border-gray-200 dark:border-gray-700 pt-2">
                        <span class="text-gray-900 dark:text-white">Total:</span>
                        <span class="text-gray-900 dark:text-white">RM {{ number_format($sale->total, 2) }}</span>
                    </div>
                    <div class="flex justify-between text-sm">
                        <span class="text-gray-600 dark:text-gray-400">Amount Paid:</span>
                        <span class="text-green-600">RM {{ number_format($sale->amount_paid, 2) }}</span>
                    </div>
                    @if($sale->total - $sale->amount_paid > 0)
                        <div class="flex justify-between text-sm font-medium">
                            <span class="text-gray-600 dark:text-gray-400">Balance Due:</span>
                            <span class="text-red-600">RM {{ number_format($sale->total - $sale->amount_paid, 2) }}</span>
                        </div>
                    @endif
                </div>
            </div>
        </div>

        @if($sale->notes)
            <div class="bg-white dark:bg-gray-800 shadow rounded-lg p-6 mb-6">
                <h2 class="text-sm font-medium text-gray-500 dark:text-gray-400 mb-2">Notes</h2>
                <p class="text-sm text-gray-900 dark:text-white">{{ $sale->notes }}</p>
            </div>
        @endif

        @if($sale->cancel_reason)
            <div class="bg-red-50 dark:bg-red-900/20 border border-red-200 dark:border-red-800 rounded-lg p-6 mb-6">
                <h2 class="text-sm font-medium text-red-800 dark:text-red-400 mb-2">Cancellation Reason</h2>
                <p class="text-sm text-red-700 dark:text-red-300">{{ $sale->cancel_reason }}</p>
            </div>
        @endif

        <!-- Actions -->
        @php
            $balanceDue = max(0, $sale->total - $sale->amount_paid);
        @endphp
        @if($sale->payment_status != 'cancelled' && $sale->payment_status != 'paid' && $balanceDue > 0)
            <div class="bg-white dark:bg-gray-800 shadow rounded-lg p-6">
                <h2 class="text-lg font-medium text-gray-900 dark:text-white mb-4">Actions</h2>

                <div class="flex flex-wrap gap-4">
                    <!-- Record Payment -->
                    <form action="{{ route('sales.payment', $sale->id) }}" method="POST" class="flex gap-2">
                        @csrf
                        <input type="number" name="amount" step="0.01" min="0.01" max="{{ $balanceDue }}"
                            placeholder="Amount (max: {{ number_format($balanceDue, 2) }})" required
                            class="w-48 px-3 py-2 border border-gray-300 rounded-md text-sm dark:bg-gray-700 dark:border-gray-600 dark:text-white">
                        <button type="submit" class="px-4 py-2 bg-green-600 text-white rounded-md hover:bg-green-700 text-sm">
                            Record Payment
                        </button>
                    </form>

                    <!-- Cancel Invoice -->
                    <button type="button" onclick="document.getElementById('cancelModal').classList.remove('hidden')"
                        class="px-4 py-2 bg-red-600 text-white rounded-md hover:bg-red-700 text-sm">
                        Cancel Invoice
                    </button>
                </div>
            </div>
        @elseif($sale->payment_status != 'cancelled' && $sale->payment_status != 'paid' && $balanceDue <= 0)
            <div class="bg-yellow-50 dark:bg-yellow-900/20 border border-yellow-200 dark:border-yellow-800 rounded-lg p-6">
                <p class="text-sm text-yellow-700 dark:text-yellow-300">
                    This invoice appears to be fully paid. Please refresh the page or contact admin if status is incorrect.
                </p>
            </div>
        @endif
    </div>
</div>

<!-- Cancel Modal -->
<div id="cancelModal" class="hidden fixed inset-0 bg-gray-600 bg-opacity-50 overflow-y-auto h-full w-full z-50">
    <div class="relative top-20 mx-auto p-5 border w-96 shadow-lg rounded-md bg-white dark:bg-gray-800">
        <h3 class="text-lg font-medium text-gray-900 dark:text-white mb-4">Cancel Invoice</h3>
        <form action="{{ route('sales.cancel', $sale->id) }}" method="POST">
            @csrf
            <div class="mb-4">
                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Reason for cancellation *</label>
                <textarea name="cancel_reason" rows="3" required
                    class="w-full px-3 py-2 border border-gray-300 rounded-md text-sm dark:bg-gray-700 dark:border-gray-600 dark:text-white"></textarea>
            </div>
            <div class="flex justify-end gap-2">
                <button type="button" onclick="document.getElementById('cancelModal').classList.add('hidden')"
                    class="px-4 py-2 border border-gray-300 rounded-md text-sm text-gray-700 dark:text-gray-300">
                    Close
                </button>
                <button type="submit" class="px-4 py-2 bg-red-600 text-white rounded-md hover:bg-red-700 text-sm">
                    Confirm Cancel
                </button>
            </div>
        </form>
    </div>
</div>
@endsection