<?php

declare(strict_types=1);

namespace App\Support\Settings;

final class SettingsRegistry
{
    /**
     * @var array<string, SettingDefinition>
     */
    private array $definitions;

    public function __construct()
    {
        $this->definitions = [];

        $this->register(new SettingDefinition(
            domain: 'backup',
            key: 'retention_keep_last_default',
            type: 'int',
            systemDefault: 30,
            rules: ['required', 'integer', 'min:1', 'max:3650'],
            normalizer: static fn (mixed $value): int => (int) $value,
        ));
    }

    /**
     * @return array<string, SettingDefinition>
     */
    public function all(): array
    {
        return $this->definitions;
    }

    public function find(string $domain, string $key): ?SettingDefinition
    {
        return $this->definitions[$this->cacheKey($domain, $key)] ?? null;
    }

    public function require(string $domain, string $key): SettingDefinition
    {
        $definition = $this->find($domain, $key);

        if ($definition instanceof SettingDefinition) {
            return $definition;
        }

        throw new \InvalidArgumentException(sprintf('Unknown setting key: %s.%s', $domain, $key));
    }

    private function register(SettingDefinition $definition): void
    {
        $this->definitions[$this->cacheKey($definition->domain, $definition->key)] = $definition;
    }

    private function cacheKey(string $domain, string $key): string
    {
        return $domain.'.'.$key;
    }
}