<?php

namespace Database\Factories;

use App\Models\PurchaseOrderModel;
use Illuminate\Database\Eloquent\Factories\Factory;

/**
 * 采购单工厂（无需 Faker）
 *
 * @extends Factory<PurchaseOrderModel>
 */
class PurchaseOrderModelFactory extends Factory
{
    protected $model = PurchaseOrderModel::class;

    private static int $sequence = 0;

    public function definition(): array
    {
        $seq = ++self::$sequence;

        return [
            'purchase_no' => 'PO' . str_pad((string) $seq, 12, '0', STR_PAD_LEFT),
            'purchase_date' => now()->toDateString(),
            'status' => PurchaseOrderModel::STATUS_PENDING,
            'total_quantity' => 0,
            'total_weight' => 0,
            'estimate_amount' => 0,
            'actual_amount' => 0,
            'operator_id' => 0,
            'remark' => '',
        ];
    }

    /**
     * 指定采购日期
     */
    public function onDate(string $date): static
    {
        return $this->state(fn () => ['purchase_date' => $date]);
    }
}