import { S3Client } from '@aws-sdk/client-s3';
import { Adapter } from '../index.js';

interface AlibabaAdapterOptions {
    bucket: string;
    /**
     * Alibaba Cloud OSS region, e.g. `"cn-hangzhou"`, `"cn-shanghai"`,
     * `"cn-beijing"`, `"ap-southeast-1"` (Singapore), `"us-east-1"` (Virginia),
     * `"eu-central-1"` (Frankfurt). Drives the endpoint host
     * (`https://oss-<region>.aliyuncs.com`); there's no env-var fallback.
     * Doubles as the SigV4 region (pass the bare region, not the
     * `oss-`-prefixed form). Buckets live in exactly one region.
     */
    region: string;
    /**
     * Override the Alibaba OSS endpoint. When unset, defaults to
     * `https://oss-${region}.aliyuncs.com`. OSS routes by Host header — the
     * SDK prepends the bucket subdomain for virtual-hosted style.
     */
    endpoint?: string;
    accessKeyId?: string;
    secretAccessKey?: string;
    /**
     * Use path-style addressing (`/<bucket>/<key>`) rather than virtual-hosted
     * style. Defaults to `false` — virtual-hosted is canonical for Alibaba OSS.
     */
    forcePathStyle?: boolean;
    /**
     * Origin used to build URLs from `url()`. When set, `url(key)` returns
     * `${publicBaseUrl}/${key}` and skips signing. For public buckets the
     * natural value is `https://${bucket}.oss-${region}.aliyuncs.com`; a
     * custom domain bound to the bucket also works. When unset, `url()`
     * falls back to a presigned GetObject (default expiry: 1 hour).
     */
    publicBaseUrl?: string;
    /**
     * Default expiry, in seconds, for the presigned URLs returned by `url()`
     * when `publicBaseUrl` is not set. Defaults to 3600 (1 hour).
     */
    defaultUrlExpiresIn?: number;
}
type AlibabaAdapter = Adapter<S3Client>;
declare const alibaba: (opts: AlibabaAdapterOptions) => AlibabaAdapter;

export { type AlibabaAdapter, type AlibabaAdapterOptions, alibaba };