import { ProviderConfigResolver, ResolvedProviderConfig } from './types';
import { EnvConfigResolverImpl } from './EnvConfigResolverImpl';

export class ProviderConfigResolverImpl implements ProviderConfigResolver {
  private readonly huaweiResolver = new EnvConfigResolverImpl();

  constructor(private readonly env: string) {}

  resolve(): ResolvedProviderConfig {
    const provider = process.env.OSS_PROVIDER;

    switch (provider) {
      case 'huawei': {
        const options = this.huaweiResolver.resolveHuaweiConfig(this.env);
        return {
          providerConfig: { type: 'huawei', options },
          cdnBaseUrl: options.cdnBaseUrl,
        };
      }
      default:
        throw new Error(`Unsupported OSS_PROVIDER: ${provider}, expected huawei`);
    }
  }
}