<?php

namespace Modules\EcommerceFinance\Services;

use Closure;
use InvalidArgumentException;
use Modules\EcommerceFinance\Contracts\UpstreamSnapshotRefresher;
use RuntimeException;

class UpstreamSnapshotRefresherRegistry
{
    /** @var array<string,Closure():UpstreamSnapshotRefresher> */
    private array $resolvers = [];

    public function __construct(private readonly UpstreamSourceRegistry $sources)
    {
    }

    public function register(string $source, Closure $resolver): void
    {
        $key = $this->sources->definition($source)['key'];
        $this->resolvers[$key] = $resolver;
    }

    public function forSource(string $source): UpstreamSnapshotRefresher
    {
        $key = $this->sources->definition($source)['key'];

        if (! isset($this->resolvers[$key])) {
            throw new InvalidArgumentException('该上游尚未登记快照刷新器：' . $key);
        }

        $refresher = ($this->resolvers[$key])();

        if ($refresher->sourceKey() !== $key) {
            throw new RuntimeException('上游快照刷新器与数据源不匹配：' . $key);
        }

        return $refresher;
    }

    /** @return array<int,string> */
    public function sources(): array
    {
        return array_keys($this->resolvers);
    }
}