import { Timestamp } from "@hashgraph/sdk";
import { HcsDid } from "../did/hcs-did";
import { JsonClass } from "../json-class";
import { CredentialSubject } from "./credential-subject";
import { HcsVcDocumentHashBase } from "./hcs-vc-document-hash-base";
import { Issuer } from "./issuer";
/**
 * The base for a VC document generation in JSON-LD format.
 * VC documents according to W3C draft specification must be compatible with JSON-LD version 1.1 Up until now there is
 * no Java implementation library of JSON-LD version 1.1. For that reason this object represents only the most basic and
 * mandatory attributes from the VC specification and Hedera HCS DID method specification point of view. Applications
 * shall extend it with any VC document properties or custom properties they require.
 */
export declare class HcsVcDocumentBase<T extends CredentialSubject> extends HcsVcDocumentHashBase {
    protected context: string[];
    protected credentialSubject: T[];
    /**
     * Creates a new VC Document instance.
     */
    constructor();
    /**
     * Constructs a credential hash that uniquely identifies this verifiable credential.
     * This is not a credential ID, but a hash composed of the properties included in HcsVcDocumentHashBase class
     * (excluding issuer name).
     * Credential hash is used to find the credential on Hedera VC registry.
     * Due to the nature of the VC document the hash taken from the base mandatory fields in this class
     * and shall produce a unique constant.
     * W3C specification defines ID field of a verifiable credential as not mandatory, however Hedera requires issuers to
     * define this property for each VC.
     *
     * @return The credential hash uniquely identifying this verifiable credential.
     */
    toCredentialHash(): string;
    getContext(): string[];
    getId(): string;
    getType(): string[];
    getIssuer(): Issuer;
    getIssuanceDate(): Timestamp;
    getCredentialSubject(): T[];
    setId(id: string): void;
    setIssuer(issuerDid: string): void;
    setIssuer(issuer: Issuer): void;
    setIssuer(issuerDid: HcsDid): void;
    setIssuanceDate(issuanceDate: Timestamp): void;
    /**
     * Adds an additional context to @context field of the VC document.
     *
     * @param context The context to add.
     */
    addContext(context: string): void;
    /**
     * Adds an additional type to `type` field of the VC document.
     *
     * @param type The type to add.
     */
    addType(type: string): void;
    /**
     * Adds a credential subject.
     *
     * @param credentialSubject The credential subject to add.
     */
    addCredentialSubject(credentialSubject: T): void;
    /**
     * Checks if all mandatory fields of a VC document are filled in.
     *
     * @return True if the document is complete and false otherwise.
     */
    isComplete(): boolean;
    toJsonTree(): any;
    static fromJsonTree<U extends CredentialSubject>(root: any, result?: HcsVcDocumentBase<U>, credentialSubjectClass?: JsonClass<U>): HcsVcDocumentBase<U>;
    /**
     * Converts this document into a JSON string.
     *
     * @return The JSON representation of this document.
     */
    toJSON(): string;
    /**
     * Converts a VC document in JSON format into a {@link HcsVcDocumentBase} object.
     * Please note this conversion respects only the fields of the base VC document. All other fields are ignored.
     *
     * @param <U>                    The type of the credential subject.
     * @param json                   The VC document as JSON string.
     * @param credentialSubjectClass The type of the credential subject inside.
     * @return The {@link HcsVcDocumentBase} object.
     */
    static fromJson<U extends CredentialSubject>(json: string, credentialSubjectClass?: JsonClass<U>): HcsVcDocumentBase<U>;
}