invoiceninja/database/factories/InvoiceFactory.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com).
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2021. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://www.elastic.co/licensing/elastic-license 
 */
namespace Database\Factories;

use App\Factory\InvoiceItemFactory;
use App\Models\Invoice;
use Illuminate\Database\Eloquent\Factories\Factory;

class InvoiceFactory extends Factory
{
    /**
     * The name of the factory's corresponding model.
     *
     * @var string
     */
    protected $model = Invoice::class;

    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition()
    {
        return [
            'status_id' => Invoice::STATUS_SENT,
            'number' => $this->faker->ean13(),
            'discount' => $this->faker->numberBetween(1, 10),
            'is_amount_discount' => (bool) random_int(0, 1),
            'tax_name1' => 'GST',
            'tax_rate1' => 10,
            'tax_name2' => 'VAT',
            'tax_rate2' => 17.5,
            //'tax_name3' => 'THIRDTAX',
            //'tax_rate3' => 5,
            // 'custom_value1' => $this->faker->date,
            //'custom_value2' => rand(0, 1) ? 'yes' : 'no',
            // 'custom_value3' => $this->faker->numberBetween(1,4),
            // 'custom_value4' => $this->faker->numberBetween(1,4),
            'is_deleted' => false,
            'po_number' => $this->faker->text(10),
            'date' => $this->faker->date(),
            'due_date' => $this->faker->date(),
            'line_items' => InvoiceItemFactory::generate(5),
            'terms' => $this->faker->text(500),
        ];
    }
}