import { ContentTypeId, ContentCodec, EncodedContent, CodecRegistry } from '@xmtp/content-type-primitives';

declare const ContentTypeAttachment: ContentTypeId;
type Attachment = {
    filename: string;
    mimeType: string;
    data: Uint8Array;
};
type AttachmentParameters = {
    filename: string;
    mimeType: string;
};
declare class AttachmentCodec implements ContentCodec<Attachment, AttachmentParameters> {
    get contentType(): ContentTypeId;
    encode(content: Attachment): {
        type: ContentTypeId;
        parameters: {
            filename: string;
            mimeType: string;
        };
        content: Uint8Array<ArrayBufferLike>;
    };
    decode(content: EncodedContent<AttachmentParameters>): Attachment;
    fallback(content: Attachment): string | undefined;
    shouldPush(): boolean;
}

declare const ContentTypeRemoteAttachment: ContentTypeId;
type EncryptedEncodedContent = {
    digest: string;
    salt: Uint8Array;
    nonce: Uint8Array;
    secret: Uint8Array;
    payload: Uint8Array;
};
type RemoteAttachment = {
    url: string;
    contentDigest: string;
    salt: Uint8Array;
    nonce: Uint8Array;
    secret: Uint8Array;
    scheme: string;
    contentLength: number;
    filename: string;
};
type RemoteAttachmentParameters = {
    contentDigest: string;
    salt: string;
    nonce: string;
    secret: string;
    scheme: string;
    contentLength: string;
    filename: string;
};
declare class RemoteAttachmentCodec implements ContentCodec<RemoteAttachment, RemoteAttachmentParameters> {
    static load<T = unknown>(remoteAttachment: RemoteAttachment, codecRegistry: CodecRegistry): Promise<T>;
    static encodeEncrypted<T>(content: T, codec: ContentCodec<T>): Promise<EncryptedEncodedContent>;
    get contentType(): ContentTypeId;
    encode(content: RemoteAttachment): {
        type: ContentTypeId;
        parameters: {
            contentDigest: string;
            salt: string;
            nonce: string;
            secret: string;
            scheme: string;
            contentLength: string;
            filename: string;
        };
        content: Uint8Array<ArrayBuffer>;
    };
    decode(content: EncodedContent<RemoteAttachmentParameters>): RemoteAttachment;
    fallback(content: RemoteAttachment): string | undefined;
    shouldPush(): boolean;
}

export { AttachmentCodec, ContentTypeAttachment, ContentTypeRemoteAttachment, RemoteAttachmentCodec };
export type { Attachment, AttachmentParameters, EncryptedEncodedContent, RemoteAttachment, RemoteAttachmentParameters };