import type { S3Client } from "@aws-sdk/client-s3";
import type { Adapter } from "../index.js";
export interface TencentAdapterOptions {
    /**
     * Tencent COS bucket name — must already include the `-<appid>` suffix
     * (e.g. `uploads-1250000000`). COS bucket names are globally namespaced
     * by `<name>-<appid>` and the S3-compatible API expects the full form.
     */
    bucket: string;
    /**
     * Tencent COS region, e.g. `"ap-guangzhou"`, `"ap-shanghai"`,
     * `"ap-beijing"`, `"ap-singapore"`, `"na-siliconvalley"`, `"eu-frankfurt"`.
     * Drives the endpoint host (`https://cos.<region>.myqcloud.com`); there's
     * no env-var fallback. Doubles as the SigV4 region. Buckets live in
     * exactly one region.
     */
    region: string;
    /**
     * Override the Tencent COS endpoint. When unset, defaults to
     * `https://cos.${region}.myqcloud.com`. COS routes by Host header — the
     * SDK prepends the bucket subdomain for virtual-hosted style.
     */
    endpoint?: string;
    /**
     * Static access key ID. Falls back to `TENCENT_SECRET_ID`; required if
     * that env var isn't set.
     */
    accessKeyId?: string;
    /**
     * Static secret access key. Falls back to `TENCENT_SECRET_KEY`; required
     * if that env var isn't set.
     */
    secretAccessKey?: string;
    /**
     * Use path-style addressing (`/<bucket>/<key>`) rather than virtual-hosted
     * style. Defaults to `false` — virtual-hosted is canonical for Tencent COS.
     */
    forcePathStyle?: boolean;
    /**
     * Origin used to build URLs from `url()`. When set, `url(key)` returns
     * `${publicBaseUrl}/${key}` and skips signing. For public buckets the
     * natural value is `https://${bucket}.cos.${region}.myqcloud.com`; a
     * CDN 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;
}
export type TencentAdapter = Adapter<S3Client>;
export declare const tencent: (opts: TencentAdapterOptions) => TencentAdapter;
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