<?php

declare(strict_types=1);

namespace KTXF\SystemStore;

use InvalidArgumentException;

/**
 * Provider and service selected for one logical tenant system store.
 */
final readonly class StoreReference
{
    public function __construct(
        public string $provider,
        public string|int $service,
        public string $namespace,
    ) {
        if ($this->provider === '') {
            throw new InvalidArgumentException('System-store provider cannot be empty');
        }

        if ($this->service === '') {
            throw new InvalidArgumentException('System-store service cannot be empty');
        }

        if (
            $this->namespace === ''
            || str_starts_with($this->namespace, '/')
            || str_ends_with($this->namespace, '/')
            || str_contains($this->namespace, '\\')
            || str_contains($this->namespace, "\0")
            || in_array('', explode('/', $this->namespace), true)
            || in_array('.', explode('/', $this->namespace), true)
            || in_array('..', explode('/', $this->namespace), true)
        ) {
            throw new InvalidArgumentException('System-store namespace must be a normalized relative key');
        }
    }

    public static function fromArray(array $data): self
    {
        $provider = $data['provider'] ?? null;
        $service = $data['service'] ?? null;
        $namespace = $data['namespace'] ?? null;

        if (!is_string($provider) || (!is_string($service) && !is_int($service)) || !is_string($namespace)) {
            throw new InvalidArgumentException('Invalid system-store reference');
        }

        return new self($provider, $service, $namespace);
    }

    public function toArray(): array
    {
        return [
            'provider' => $this->provider,
            'service' => $this->service,
            'namespace' => $this->namespace,
        ];
    }
}