@php
    /** @var \App\Domain\Purchasing\Models\PurchaseOrder $order */
    $existingItems = old('items', $order->items->map(fn ($item) => [
        'product_id' => (string) $item->product_id,
        'tax_id' => $item->tax_id ? (string) $item->tax_id : '',
        'quantity_ordered' => $item->quantity_ordered,
        'unit_cost' => (float) $item->unit_cost,
    ])->all());
@endphp

<x-app-layout>
    <x-slot name="header">
        <div class="flex items-center justify-between">
            <h2 class="font-semibold text-xl text-gray-800 dark:text-gray-200 leading-tight">
                {{ __('Edit Purchase Order') }} - {{ $order->po_number }}
            </h2>
            <a href="{{ route('purchasing.orders.show', $order) }}" class="text-sm text-gray-500 dark:text-gray-400 hover:text-gray-900 dark:hover:text-gray-100 underline">
                {{ __('Back to order') }}
            </a>
        </div>
    </x-slot>

    <div class="py-12">
        <div class="max-w-5xl mx-auto sm:px-6 lg:px-8">
            <div class="bg-white dark:bg-gray-800 overflow-hidden shadow-sm sm:rounded-lg p-6">
                <form
                    method="POST"
                    action="{{ route('purchasing.orders.update', $order) }}"
                    x-data="purchaseOrderLineItems(
                        {{ Illuminate\Support\Js::from($existingItems) }},
                        {{ Illuminate\Support\Js::from($productOptions->toArray()) }},
                        {{ Illuminate\Support\Js::from($taxOptions->toArray()) }},
                    )"
                >
                    @csrf
                    @method('PUT')

                    <div class="grid grid-cols-1 md:grid-cols-3 gap-6 mb-6">
                        <div>
                            <x-input-label for="supplier_id" :value="__('Supplier')" />
                            <select id="supplier_id" name="supplier_id" class="mt-1 block w-full rounded-md border-gray-300 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 shadow-sm focus:border-indigo-500 focus:ring-indigo-500" required>
                                @foreach ($supplierOptions as $id => $name)
                                    <option value="{{ $id }}" @selected((string) old('supplier_id', $order->supplier_id) === (string) $id)>{{ $name }}</option>
                                @endforeach
                            </select>
                            <x-input-error :messages="$errors->get('supplier_id')" class="mt-2" />
                        </div>

                        <div>
                            <x-input-label for="warehouse_id" :value="__('Receiving Warehouse')" />
                            <select id="warehouse_id" name="warehouse_id" class="mt-1 block w-full rounded-md border-gray-300 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 shadow-sm focus:border-indigo-500 focus:ring-indigo-500" required>
                                @foreach ($warehouseOptions as $id => $name)
                                    <option value="{{ $id }}" @selected((string) old('warehouse_id', $order->warehouse_id) === (string) $id)>{{ $name }}</option>
                                @endforeach
                            </select>
                            <x-input-error :messages="$errors->get('warehouse_id')" class="mt-2" />
                        </div>

                        <div>
                            <x-input-label for="order_date" :value="__('Order Date')" />
                            <x-text-input id="order_date" name="order_date" type="date" class="mt-1 block w-full" :value="old('order_date', $order->order_date->toDateString())" required />
                            <x-input-error :messages="$errors->get('order_date')" class="mt-2" />
                        </div>

                        <div>
                            <x-input-label for="expected_date" :value="__('Expected Date')" />
                            <x-text-input id="expected_date" name="expected_date" type="date" class="mt-1 block w-full" :value="old('expected_date', $order->expected_date?->toDateString())" />
                            <x-input-error :messages="$errors->get('expected_date')" class="mt-2" />
                        </div>

                        <div class="md:col-span-3">
                            <x-input-label for="notes" :value="__('Notes')" />
                            <textarea id="notes" name="notes" rows="2" class="mt-1 block w-full rounded-md border-gray-300 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 shadow-sm focus:border-indigo-500 focus:ring-indigo-500">{{ old('notes', $order->notes) }}</textarea>
                            <x-input-error :messages="$errors->get('notes')" class="mt-2" />
                        </div>
                    </div>

                    <h3 class="font-medium text-gray-800 dark:text-gray-200 mb-3">{{ __('Line Items') }}</h3>
                    <x-input-error :messages="$errors->get('items')" class="mb-2" />

                    <div class="overflow-x-auto">
                        <table class="min-w-full divide-y divide-gray-200 dark:divide-gray-700">
                            <thead>
                                <tr>
                                    <th class="px-2 py-2 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">{{ __('Product') }}</th>
                                    <th class="px-2 py-2 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">{{ __('Tax') }}</th>
                                    <th class="px-2 py-2 text-right text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">{{ __('Qty') }}</th>
                                    <th class="px-2 py-2 text-right text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">{{ __('Unit Cost') }}</th>
                                    <th class="px-2 py-2 text-right text-xs font-medium text-gray-500 dark:text-gray-400 uppercase">{{ __('Line Total') }}</th>
                                    <th></th>
                                </tr>
                            </thead>
                            <tbody>
                                <template x-for="(item, index) in items" :key="index">
                                    <tr class="border-b border-gray-100 dark:border-gray-700">
                                        <td class="px-2 py-2">
                                            <select :name="`items[${index}][product_id]`" x-model="item.product_id" class="block w-full rounded-md border-gray-300 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 shadow-sm text-sm focus:border-indigo-500 focus:ring-indigo-500" required>
                                                <option value="">{{ __('Select...') }}</option>
                                                <template x-for="[id, label] in Object.entries(productOptions)" :key="id">
                                                    <option :value="id" x-text="label"></option>
                                                </template>
                                            </select>
                                        </td>
                                        <td class="px-2 py-2">
                                            <select :name="`items[${index}][tax_id]`" x-model="item.tax_id" class="block w-full rounded-md border-gray-300 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 shadow-sm text-sm focus:border-indigo-500 focus:ring-indigo-500">
                                                <option value="">{{ __('None') }}</option>
                                                <template x-for="[id, label] in Object.entries(taxOptions)" :key="id">
                                                    <option :value="id" x-text="label"></option>
                                                </template>
                                            </select>
                                        </td>
                                        <td class="px-2 py-2">
                                            <input type="number" min="1" step="1" :name="`items[${index}][quantity_ordered]`" x-model.number="item.quantity_ordered" class="block w-24 rounded-md border-gray-300 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 shadow-sm text-sm text-right focus:border-indigo-500 focus:ring-indigo-500" required>
                                        </td>
                                        <td class="px-2 py-2">
                                            <input type="number" min="0" step="0.01" :name="`items[${index}][unit_cost]`" x-model.number="item.unit_cost" class="block w-28 rounded-md border-gray-300 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 shadow-sm text-sm text-right focus:border-indigo-500 focus:ring-indigo-500" required>
                                        </td>
                                        <td class="px-2 py-2 text-right text-sm tabular-nums text-gray-900 dark:text-gray-100" x-text="lineTotal(item).toLocaleString()"></td>
                                        <td class="px-2 py-2 text-right">
                                            <button type="button" @click="removeItem(index)" class="text-red-600 dark:text-red-400 text-sm hover:underline">{{ __('Remove') }}</button>
                                        </td>
                                    </tr>
                                </template>
                            </tbody>
                        </table>
                    </div>

                    <div class="mt-3 flex items-center justify-between">
                        <button type="button" @click="addItem()" class="text-sm text-indigo-600 dark:text-indigo-400 hover:underline">{{ __('+ Add Item') }}</button>
                        <div class="text-sm text-gray-700 dark:text-gray-300">
                            {{ __('Grand Total:') }} <span class="font-semibold tabular-nums" x-text="grandTotal.toLocaleString()"></span>
                        </div>
                    </div>

                    <div class="flex items-center justify-end gap-3 mt-8">
                        <a href="{{ route('purchasing.orders.show', $order) }}" class="text-sm text-gray-600 dark:text-gray-400 hover:text-gray-900 dark:hover:text-gray-100">
                            {{ __('Cancel') }}
                        </a>
                        <x-primary-button>{{ __('Save Changes') }}</x-primary-button>
                    </div>
                </form>
            </div>
        </div>
    </div>

    @push('scripts')
        @vite('resources/js/purchase-order-form.js')
    @endpush
</x-app-layout>