<?php

namespace App\Services;

use InvalidArgumentException;

final class ArticleLikeDefaults
{
    public function editorialCategory(string $slug): string
    {
        if ($slug === 'advanced') {
            return 'comprehensive';
        }

        return in_array($slug, ['client', 'windows', 'andorid', 'ios', 'linux', 'mac'], true)
            ? 'beginner' : 'editorial_other';
    }

    /** @return array{seven_day:int, yearly:int, one_year:int} */
    public function resolve(string $type, array $overrides = []): array
    {
        $limits = ['seven_day' => 1000000, 'yearly' => 365, 'one_year' => 1000000];
        $settings = config('article_likes.'.$type);
        if (! is_array($settings)) {
            throw new InvalidArgumentException('Missing article like defaults: '.$type);
        }

        $result = [];
        foreach ($limits as $key => $max) {
            // Site settings are authoritative, including zero. Incoming values
            // remain accepted for API compatibility but cannot change the policy.
            $value = $settings[$key] ?? null;
            if (is_array($value)) {
                if (count($value) !== 2 || ! array_is_list($value) || ! is_int($value[0]) || ! is_int($value[1])
                    || $value[0] < 0 || $value[1] > $max || $value[0] > $value[1]) {
                    throw new InvalidArgumentException('Invalid article like range: '.$type.'.'.$key);
                }
                $value = random_int($value[0], $value[1]);
            }
            // Legacy callers historically submit numeric strings.
            if (is_string($value) && ctype_digit($value)) {
                $value = (int) $value;
            }
            if (! is_int($value) || $value < 0 || $value > $max) {
                throw new InvalidArgumentException('Invalid article like value: '.$type.'.'.$key);
            }
            $result[$key] = $value;
        }

        return $result;
    }

    public function newArticleFields(string $type, array $overrides = []): array
    {
        $values = $this->resolve($type, $overrides);

        return ['i7like' => $values['seven_day'], 'i365like' => $values['yearly'],
            'iYearLikeTarget' => $values['one_year'], 'iYearLikeAdded' => 0,
            'sYearLikeStartedAt' => $values['one_year'] > 0 ? now() : null];
    }
}