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Edit File: UpdateProductRequest.php

<?php

namespace App\Http\Requests\Api\Provider\Product;

use App\Http\Requests\Api\BaseApiRequest;
use App\Models\ProductImage;

class UpdateProductRequest extends BaseApiRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

/**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, mixed>
     */
    public function rules()
    {
        return [
            'name' => 'required|array|size:' . count(config('translatable.locales')),
            'name.*' => 'string|max:255',
            'description' => 'required|array|size:' . count(config('translatable.locales')),
            'description.*' => 'string|max:1000',
            'has_price' => 'required|boolean',
            'price' => 'required_if:has_price,1,true|numeric|gt:0',
            'price_after_discount' => 'nullable|numeric|gt:0|lt:price',
            'category_id' => ['required', 'exists:categories,id', function ($attribute, $value, $fail) {
                $category = \App\Models\Category::where('id', $value)->first()->level;
                if ($category != 3) {
                    $fail(__('apis.category_not_able_hold_products'));
                }
            }],
            'images' => 'nullable|array',
            'images.*' => 'nullable|image|mimes:jpeg,png,jpg,gif,svg,webp|max:2048',
        ];
    }

public function attributes()
    {
        return [
            'has_price' => __('apis.product_type'),
            'category_id' => __('apis.sub_category'),
        ];
    }

public function messages()
    {
        return [
            'price.required_if' => __('apis.product_has_priced_required'),
        ];
    }

public function withValidator($validator)
    {
        $validator->after(function ($validator) {
            if ($this->has_price && !$this->price_after_discount) {
                $validator->errors()->add('price_after_discount', __('apis.price_after_discount_required'));
            }
            if (empty($this->images) && ProductImage::where('product_id', $this->id)->doesntExist()) {
                $validator->errors()->add('images', __('apis.product_must_have_images'));
            }
        });
    }
}

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