<?php

namespace App\Domains\Ticketing\FiestaFutbolInfantil\Requests;

use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;
use Illuminate\Validation\Validator;

class UpsertMerchandiseRequest extends FormRequest
{
    public function authorize(): bool
    {
        return true;
    }

    /** @return array<string, mixed> */
    public function rules(): array
    {
        $tenantCode = $this->user()?->tenant_codigo;

        return [
            'items' => ['required', 'array', 'min:1', 'max:100'],
            'items.*' => ['required', 'array:id,title,description,max_units_per_user,variants'],
            'items.*.id' => [
                'sometimes',
                'nullable',
                'integer',
                'distinct',
                Rule::exists('catalog_items', 'id')->where(
                    fn ($query) => $query
                        ->where('tenant_code', $tenantCode)
                        ->whereIn('category_id', fn ($categoryQuery) => $categoryQuery
                            ->select('id')
                            ->from('categorias')
                            ->where('tenant_code', $tenantCode)
                            ->where('nombre', 'Merchandising'))
                ),
            ],
            'items.*.title' => ['required', 'string', 'max:255'],
            'items.*.description' => ['sometimes', 'nullable', 'string'],
            'items.*.max_units_per_user' => ['required', 'integer', 'min:1'],
            'items.*.variants' => ['required', 'array', 'min:1', 'max:500'],
            'stock_adjustment_id' => ['nullable', 'uuid'],
            'items.*.variants.*' => ['required', 'array:id,color,size,stock,stock_difference,price'],
            'items.*.variants.*.id' => ['sometimes', 'nullable', 'integer', 'distinct'],
            'items.*.variants.*.color' => ['required', 'string', 'max:255'],
            'items.*.variants.*.size' => ['required', 'string', 'max:255'],
            'items.*.variants.*.stock' => ['sometimes', 'integer', 'min:0'],
            'items.*.variants.*.stock_difference' => ['sometimes', 'integer'],
            'items.*.variants.*.price' => ['required', 'numeric', 'min:0', 'max:99999999.99'],
        ];
    }

    /** @return array<int, callable> */
    public function after(): array
    {
        return [
            function (Validator $validator): void {
                foreach ($this->input('items', []) as $itemIndex => $item) {
                    if (! is_array($item)) {
                        continue;
                    }

                    foreach ($item['variants'] ?? [] as $variantIndex => $variant) {
                        if (! is_array($variant)) {
                            continue;
                        }

                        $prefix = "items.{$itemIndex}.variants.{$variantIndex}";
                        if (isset($variant['id']) && ! array_key_exists('stock_difference', $variant)) {
                            $validator->errors()->add(
                                "{$prefix}.stock_difference",
                                'La diferencia de stock es obligatoria al actualizar una variante.',
                            );
                        }

                        if (! isset($variant['id']) && ! array_key_exists('stock', $variant)) {
                            $validator->errors()->add(
                                "{$prefix}.stock",
                                'El stock inicial es obligatorio al crear una variante.',
                            );
                        }
                    }
                }
            },
        ];
    }
}