<?php

namespace App\Http\Requests\Concerns;

use Illuminate\Validation\Validator;

trait ValidatesProposalPricing
{
    /**
     * Validation rules for an optional Pavão/Irrecusável pricing block
     * (Matrícula, Aulas, Materiais, Valor Total do Curso), nested under
     * $prefix ("pavao"/"irrecusavel"). The block itself is optional — a
     * proposal can have Pavão, Irrecusável, both, or neither yet. Sending it
     * as `null` means "this proposal doesn't have this modality" (removes an
     * existing one); sending an object requires every sub-field.
     */
    protected function proposalPricingRules(string $prefix, bool $withCondition = false): array
    {
        $rules = [
            $prefix => 'sometimes|nullable|array',

            "$prefix.registration_value"                => 'nullable|numeric|min:0',

            "$prefix.classes_value"                => 'nullable|numeric|min:0',
            "$prefix.classes_discount_percentage"  => 'nullable|numeric|min:0|max:100',

            "$prefix.materials"              => 'nullable|array',
            "$prefix.materials.*.product_id" => "required_with:$prefix.materials|integer|exists:products,id",
            "$prefix.materials.*.quantity"   => "required_with:$prefix.materials|integer|min:1",
            "$prefix.materials.*.price"      => "required_with:$prefix.materials|numeric|min:0",

            "$prefix.total_value"            => 'nullable|numeric|min:0',
            "$prefix.total_max_installments" => 'nullable|integer|min:1',
        ];

        if ($withCondition) {
            $rules["$prefix.condition"] = 'nullable|string';
        }

        return $rules;
    }

    /**
     * For each pricing block actually sent (present and not null), enforce
     * that exactly one of "included in course" / "allows installments" is
     * selected per section.
     */
    protected function validateProposalPricingSections(Validator $validator, array $prefixes): void
    {
        // No longer needed, columns removed. Maintained to avoid breaking dependent code.
    }
}