@extends('layouts.app')

@section('title', 'Record Supplier Invoice')

@section('content')
<div class="max-w-4xl mx-auto px-4 py-6">
    <div class="mb-6">
        <h1 class="text-3xl font-bold text-gray-900">Record Supplier Invoice</h1>
        <p class="text-gray-600">Link a supplier's bill to your existing Purchase Orders</p>
    </div>

    <form action="{{ route('supplier-invoices.store') }}" method="POST" enctype="multipart/form-data" id="invoiceForm">
        @csrf

        <div class="bg-white shadow rounded-lg p-6 space-y-6">
            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                <div>
                    <label class="block text-sm font-medium text-gray-700">Supplier *</label>
                    <select name="supplier_id" id="supplier_id" required class="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:ring-orange-500 focus:border-orange-500">
                        <option value="">Select a Supplier</option>
                        @foreach($suppliers as $supplier)
                            <option value="{{ $supplier->id }}" {{ old('supplier_id') == $supplier->id ? 'selected' : '' }}>
                                {{ $supplier->name }}
                            </option>
                        @endforeach
                    </select>
                </div>

                <div>
                    <label class="block text-sm font-medium text-gray-700">Internal Company (Paying Entity) *</label>
                    <select name="company_id" required class="mt-1 block w-full rounded-md border-gray-300 shadow-sm">
                        @foreach($companies as $company)
                            <option value="{{ $company->id }}">{{ $company->name }}</option>
                        @endforeach
                    </select>
                </div>
            </div>

            <div class="grid grid-cols-1 md:grid-cols-3 gap-6">
                <div>
                    <label class="block text-sm font-medium text-gray-700">Supplier Invoice # *</label>
                    <input type="text" name="supplier_invoice_number" value="{{ old('supplier_invoice_number') }}" required
                           class="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:ring-orange-500 focus:border-orange-500" placeholder="e.g. IN02566">
                </div>

                <div>
                    <label class="block text-sm font-medium text-gray-700">Invoice Date *</label>
                    <input type="date" name="invoice_date" value="{{ old('invoice_date', date('Y-m-d')) }}" required
                           class="mt-1 block w-full rounded-md border-gray-300 shadow-sm">
                </div>

                <div>
                    <label class="block text-sm font-medium text-gray-700">Total Amount (Inc. Tax) *</label>
                    <div class="mt-1 relative rounded-md shadow-sm">
                        <div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                            <span class="text-gray-500 sm:text-sm">$</span>
                        </div>
                        <input type="number" name="total_amount" step="0.01" value="{{ old('total_amount') }}" required
                               class="pl-7 block w-full rounded-md border-gray-300 focus:ring-orange-500 focus:border-orange-500" placeholder="0.00">
                    </div>
                </div>
            </div>

            <hr class="border-gray-200">

            <div>
                <label class="block text-sm font-medium text-gray-700 mb-2">Link Purchase Orders *</label>
                <div class="bg-gray-50 rounded-md p-4 border border-gray-200">
                    <p id="noSupplierMsg" class="text-sm text-gray-500 italic">Please select a supplier first to see their open Purchase Orders.</p>

                    <div id="poList" class="hidden grid grid-cols-1 md:grid-cols-2 gap-4">
                        @foreach($purchaseOrders as $po)
                            <label class="po-item relative flex items-start p-3 bg-white border rounded-md cursor-pointer hover:border-orange-400"
                                   data-supplier-id="{{ $po->supplier_id }}">
                                <div class="flex items-center h-5">
                                    <input type="checkbox" name="po_ids[]" value="{{ $po->id }}" class="h-4 w-4 text-orange-600 border-gray-300 rounded">
                                </div>
                                <div class="ml-3 text-sm">
                                    <span class="font-bold text-gray-900">{{ $po->po_number }}</span>
                                    <span class="text-gray-500 block">Cust Inv: {{ $po->clientInvoice->invoice_number ?? 'N/A' }}</span>
                                    <span class="text-orange-600 font-medium">${{ number_format($po->total_price, 2) }}</span>
                                </div>
                            </label>
                        @endforeach
                    </div>
                </div>
            </div>

            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                <div>
                    <label class="block text-sm font-medium text-gray-700">Upload Invoice PDF *</label>
                    <input type="file" name="pdf_file" accept=".pdf" required
                           class="mt-1 block w-full text-sm text-gray-500 file:mr-4 file:py-2 file:px-4 file:rounded-md file:border-0 file:text-sm file:font-semibold file:bg-orange-50 file:text-orange-700 hover:file:bg-orange-100">
                </div>

                <div>
                    <label class="block text-sm font-medium text-gray-700">Payment Status *</label>
                    <select name="payment_status" required class="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:ring-orange-500 focus:border-orange-500">
                        <option value="unpaid">Unpaid</option>
                        <option value="partial">Partial</option>
                        <option value="paid">Paid</option>
                    </select>
                </div>
            </div>

            <div class="flex justify-end space-x-3 pt-4 border-t">
                <a href="{{ route('supplier-invoices.index') }}" class="px-4 py-2 text-sm font-medium text-gray-700 bg-white border border-gray-300 rounded-md hover:bg-gray-50">Cancel</a>
                <button type="submit" class="px-4 py-2 text-sm font-medium text-white bg-orange-600 border border-transparent rounded-md hover:bg-orange-700">
                    Save Supplier Invoice
                </button>
            </div>
        </div>
    </form>
</div>

<script>
    document.getElementById('supplier_id').addEventListener('change', function() {
        const selectedSupplier = this.value;
        const poItems = document.querySelectorAll('.po-item');
        const poList = document.getElementById('poList');
        const noSupplierMsg = document.getElementById('noSupplierMsg');

        let foundCount = 0;

        if (selectedSupplier) {
            poItems.forEach(item => {
                if (item.getAttribute('data-supplier-id') === selectedSupplier) {
                    item.classList.remove('hidden');
                    foundCount++;
                } else {
                    item.classList.add('hidden');
                    // Uncheck hidden items
                    item.querySelector('input').checked = false;
                }
            });

            if (foundCount > 0) {
                poList.classList.remove('hidden');
                noSupplierMsg.classList.add('hidden');
            } else {
                poList.classList.add('hidden');
                noSupplierMsg.innerText = "No open Purchase Orders found for this supplier.";
                noSupplierMsg.classList.remove('hidden');
            }
        } else {
            poList.classList.add('hidden');
            noSupplierMsg.innerText = "Please select a supplier first to see their open Purchase Orders.";
            noSupplierMsg.classList.remove('hidden');
        }
    });
</script>
@endsection