@php
    $isEdit = $po->exists;
    $action = $isEdit ? route('admin.purchase-orders.update', $po) : route('admin.purchase-orders.store');
    $taxRate = $tax_rate ?? 14;
@endphp

<form action="{{ $action }}" method="POST" id="poForm">
    @csrf
    @if($isEdit) @method('PUT') @endif

    @if($errors->any())
        <div class="alert alert-danger"><ul class="mb-0">@foreach($errors->all() as $e)<li>{{ $e }}</li>@endforeach</ul></div>
    @endif

    <div class="card">
        <div class="card-header"><h3 class="card-title">بيانات أمر الشراء</h3></div>
        <div class="card-body">
            <div class="row">
                <div class="form-group col-md-3"><label>الرقم</label>
                    <input type="text" value="{{ $isEdit ? $po->number : ($next_number ?? '') }}" class="form-control" readonly></div>
                <div class="form-group col-md-3"><label>تاريخ الأمر *</label>
                    <input type="date" name="order_date" value="{{ old('order_date', $po->order_date?->format('Y-m-d') ?? now()->toDateString()) }}" class="form-control" required></div>
                <div class="form-group col-md-3"><label>التسليم المتوقع</label>
                    <input type="date" name="expected_delivery_date" value="{{ old('expected_delivery_date', $po->expected_delivery_date?->format('Y-m-d')) }}" class="form-control"></div>
                <div class="form-group col-md-3"><label>العملة *</label>
                    <input type="text" name="currency_code" value="{{ old('currency_code', $po->currency_code ?? 'EGP') }}" class="form-control" required></div>

                <div class="form-group col-md-4"><label>المورد *</label>
                    <select name="supplier_id" class="form-control" required>
                        <option value="">—</option>
                        @foreach($suppliers as $s)
                            <option value="{{ $s->id }}" @selected(old('supplier_id', $po->supplier_id) == $s->id)>{{ $s->name_ar }} ({{ $s->code }})</option>
                        @endforeach
                    </select></div>
                <div class="form-group col-md-4"><label>المستودع المستلم</label>
                    <select name="warehouse_id" class="form-control">
                        <option value="">—</option>
                        @foreach($warehouses as $w)
                            <option value="{{ $w->id }}" @selected(old('warehouse_id', $po->warehouse_id) == $w->id)>{{ $w->name }}</option>
                        @endforeach
                    </select></div>
                <div class="form-group col-md-4"><label>شروط الدفع</label>
                    <input type="text" name="payment_terms" value="{{ old('payment_terms', $po->payment_terms) }}" class="form-control"></div>

                <div class="form-group col-md-12"><label>ملاحظات داخلية</label>
                    <textarea name="internal_notes" class="form-control" rows="2">{{ old('internal_notes', $po->internal_notes) }}</textarea></div>
            </div>
        </div>
    </div>

    <div class="card">
        <div class="card-header"><h3 class="card-title">البنود</h3></div>
        <div class="card-body">
            <table class="table table-bordered" id="itemsTable">
                <thead class="bg-light"><tr>
                    <th style="width:25%">المنتج</th><th style="width:25%">الوصف *</th>
                    <th style="width:8%">الكمية *</th><th style="width:10%">السعر *</th>
                    <th style="width:8%">خصم %</th><th style="width:7%">ضريبة %</th>
                    <th style="width:12%">الإجمالي</th><th style="width:5%"></th>
                </tr></thead>
                <tbody>
                    @if($isEdit && $po->items->isNotEmpty())
                        @foreach($po->items as $i => $item)
                            <tr>
                                <td>
                                    <select name="items[{{ $i }}][product_id]" class="form-control form-control-sm product-picker" style="width:100%">
                                        @if($item->product)<option value="{{ $item->product_id }}" selected>[{{ $item->product->sku }}] {{ $item->product->name_ar }}</option>@endif
                                    </select>
                                </td>
                                <td><input type="text" name="items[{{ $i }}][description]" class="form-control form-control-sm desc" value="{{ $item->description }}" required></td>
                                <td><input type="number" step="0.001" min="0.001" name="items[{{ $i }}][quantity]" class="form-control form-control-sm qty" value="{{ (float) $item->quantity }}" required></td>
                                <td><input type="number" step="0.01" min="0" name="items[{{ $i }}][unit_price]" class="form-control form-control-sm price" value="{{ (float) $item->unit_price }}" required></td>
                                <td><input type="number" step="0.01" min="0" max="100" name="items[{{ $i }}][discount_pct]" class="form-control form-control-sm disc" value="{{ (float) $item->discount_pct }}"></td>
                                <td><input type="number" step="0.01" min="0" max="100" name="items[{{ $i }}][tax_pct]" class="form-control form-control-sm tax" value="{{ (float) $item->tax_pct }}"></td>
                                <td class="text-right line-total">{{ number_format((float) $item->total, 2) }}</td>
                                <td><button type="button" class="btn btn-sm btn-danger remove-row"><i class="fas fa-times"></i></button></td>
                            </tr>
                        @endforeach
                    @endif
                </tbody>
                <tfoot><tr><td colspan="8"><button type="button" class="btn btn-sm btn-success" id="addRowBtn"><i class="fas fa-plus"></i> إضافة بند</button></td></tr></tfoot>
            </table>
        </div>
    </div>

    <div class="card">
        <div class="card-body">
            <div class="row">
                <div class="col-md-6">
                    <div class="form-group row"><label class="col-sm-5 col-form-label">مصاريف الشحن</label>
                        <div class="col-sm-7"><input type="number" step="0.01" min="0" name="shipping_fee" id="shipping_fee" value="{{ old('shipping_fee', $po->shipping_fee ?? 0) }}" class="form-control"></div></div>
                </div>
                <div class="col-md-6">
                    <table class="table table-sm m-0">
                        <tr><th>المجموع الفرعي</th><td class="text-right"><span id="totSubtotal">0.00</span></td></tr>
                        <tr><th>الخصم</th><td class="text-right text-danger">− <span id="totDiscount">0.00</span></td></tr>
                        <tr><th>الضريبة</th><td class="text-right">+ <span id="totTax">0.00</span></td></tr>
                        <tr><th>الشحن</th><td class="text-right">+ <span id="totShipping">0.00</span></td></tr>
                        <tr class="bg-light"><th class="text-primary">الإجمالي</th><td class="text-right text-primary h5"><b id="totGrand">0.00</b></td></tr>
                    </table>
                </div>
            </div>
        </div>
        <div class="card-footer text-{{ in_array(app()->getLocale(), ['ar']) ? 'left' : 'right' }}">
            <a href="{{ route('admin.purchase-orders.index') }}" class="btn btn-secondary">{{ __('admin.cancel') }}</a>
            <button type="submit" class="btn btn-primary"><i class="fas fa-save"></i> {{ __('admin.save') }}</button>
        </div>
    </div>
</form>

@push('scripts')
@include('admin._partials.line_items_recalc', [
    'tableId'         => 'itemsTable',
    'searchUrl'       => route('admin.stock.product-search'),
    'taxRate'         => $taxRate,
    'extraFee'        => 'shipping_fee',
    'totShippingId'   => 'totShipping',
])
@endpush