<?php

namespace App\Services;

use Illuminate\Support\Facades\Validator;

class SubmissionAnswers
{
    /** Validate against the immutable definition chosen for the submission, never the latest company version.
     * @param  array<string,mixed>  $definition
     * @param  array<string,mixed>  $answers
     * @return array<string,mixed>
     */
    public function validate(array $definition, array $answers): array
    {
        $fields = $definition['fields'];
        $keys = array_column($fields, 'key');
        $rules = ['answers' => $keys === [] ? 'present|array|max:0' : 'present|array:'.implode(',', $keys)];
        foreach ($fields as $field) {
            $path = 'answers.'.$field['key'];
            $presence = $field['required'] ? 'required' : 'nullable';
            $rules[$path] = $presence.'|'.match ($field['type']) {
                'location' => 'array:province,district,locality',
                'number' => 'numeric',
                'date' => 'date_format:Y-m-d',
                'email' => 'email|max:254',
                default => 'string|max:5000',
            };
            if ($field['type'] === 'location') {
                foreach (['province', 'district', 'locality'] as $part) {
                    $rules[$path.'.'.$part] = 'required_with:'.$path.'|string|max:150';
                }
            }
        }

        return Validator::make(['answers' => $answers], $rules, [], [
            'answers.availability_location' => 'local de disponibilidade',
            'answers.availability_location.province' => 'província',
            'answers.availability_location.district' => 'distrito',
            'answers.availability_location.locality' => 'localidade',
        ])->validate()['answers'];
    }
}