<?php

namespace Modules\EcommerceFinance\Services;

use InvalidArgumentException;

/**
 * 统一解析上游数据源定义，避免业务代码直接拼接配置路径。
 */
class UpstreamSourceRegistry
{
    /**
     * @return array{key:string,label:string,config:string}
     */
    public function definition(string $source): array
    {
        $source = strtolower(trim($source));

        if ($source === '' || ! preg_match('/^[a-z0-9_-]+$/', $source)) {
            throw new InvalidArgumentException('上游数据源标识不合法。');
        }

        $definition = config('upstreams.sources.' . $source);

        if (! is_array($definition)) {
            throw new InvalidArgumentException('未登记的上游数据源：' . $source);
        }

        $configKey = trim((string) ($definition['config'] ?? ''));

        if ($configKey === '' || ! preg_match('/^[a-z0-9_.-]+$/i', $configKey)) {
            throw new InvalidArgumentException('上游数据源配置路径不合法：' . $source);
        }

        return [
            'key' => $source,
            'label' => trim((string) ($definition['label'] ?? $source)) ?: $source,
            'config' => $configKey,
        ];
    }

    public function value(string $source, string $path, mixed $default = null): mixed
    {
        $definition = $this->definition($source);
        $suffix = trim($path, '.');
        $key = $definition['config'] . ($suffix === '' ? '' : '.' . $suffix);

        return config($key, $default);
    }

    public function enabled(string $source): bool
    {
        return (bool) $this->value($source, 'enabled', false);
    }
}