import { AssetOptions, AssetResponse } from '@wireapp/api-client/lib/asset';
import { ProgressCallback, RequestCancelable } from '@wireapp/api-client/lib/http';
import { APIClient } from '@wireapp/api-client';
import { EncryptedAsset, EncryptedAssetUploaded } from '../../cryptography';
export { ProgressCallback };
export type AssetUrlData = {
    assetKey: string;
    assetDomain: string;
    forceCaching?: boolean;
    assetToken?: string;
};
export declare class AssetService {
    private readonly apiClient;
    constructor(apiClient: APIClient);
    /**
     * Will download an asset on the server.
     * Will route the request to the right endpoint depending on the asset version
     *
     * @param assetData The versioned asset data
     * @param progressCallback?
     * @return Resolves when the asset has been uploaded
     */
    downloadRawAsset(assetData: AssetUrlData, progressCallback?: ProgressCallback): RequestCancelable<AssetResponse>;
    /**
     * Uploads a raw asset to the backend without encrypting it
     *
     * @param plainText The raw content of the asset to upload
     * @param options?
     * @param progressCallback?
     * @return cancellable request that resolves with the uploaded image
     */
    uploadRawAsset(asset: Buffer | Uint8Array, options?: AssetOptions, progressCallback?: ProgressCallback): RequestCancelable<{
        key: string;
        domain: string;
        token?: string | undefined;
        expires?: string | undefined;
    }>;
    /**
     * Will encrypt and upload an asset to the backend
     *
     * @param plainText The raw content of the asset to upload
     * @param options?
     * @param progressCallback?
     * @return cancellable request that resolves with the uploaded image and decryption keys
     */
    uploadAsset(plainText: Buffer | Uint8Array, options?: AssetOptions, progressCallback?: ProgressCallback): Promise<RequestCancelable<EncryptedAssetUploaded>>;
    decryptAsset(asset: EncryptedAsset): Promise<Uint8Array>;
    /**
     * Will download and decrypt an asset stored on the server
     * @param assetData - the data of the asset to download
     * @param otrKey the encryption key used to encrypt the asset
     * @param sha256 the sha256 hash of the asset
     * @param progressCallback a progress callback to inform about the download progress
     */
    downloadAsset(assetData: AssetUrlData, otrKey: Uint8Array, sha256: Uint8Array, progressCallback?: ProgressCallback): {
        response: Promise<AssetResponse>;
        cancel: () => void;
    };
}
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