import { ContractAbstraction, ContractProvider, Wallet, Context } from '@taquito/taquito';
import { MetadataInterface } from './metadata-interface';
import { MetadataContext } from './tzip16-contract-abstraction';
export interface MetadataProviderInterface {
    provideMetadata(contractAbstraction: ContractAbstraction<ContractProvider | Wallet>, uri: string, context: MetadataContext): Promise<MetadataEnvelope>;
}
export interface MetadataEnvelope {
    uri: string;
    integrityCheckResult?: boolean;
    sha256Hash?: string;
    metadata: MetadataInterface;
}
export interface Handler {
    getMetadata(contractAbstraction: ContractAbstraction<ContractProvider | Wallet>, uri: Tzip16Uri, context: Context): Promise<string>;
}
export interface Tzip16Uri {
    sha256hash: string | undefined;
    protocol: string;
    location: string;
}
/**
 \* Metadata Provider
 */
export declare class MetadataProvider implements MetadataProviderInterface {
    private handlers;
    constructor(handlers: Map<string, Handler>);
    /**
     * Fetch the metadata by using the appropriate handler based on the protcol found in the URI
     * @returns an object which contains the uri, the metadata, an optional integrity check result and an optional SHA256 hash
     * @param contractAbstraction the contract abstraction which contains the URI in its storage
     * @param uri the decoded uri found in the storage
     * @param context the TezosToolkit Context
     */
    provideMetadata(contractAbstraction: ContractAbstraction<ContractProvider | Wallet>, uri: string, context: Context): Promise<MetadataEnvelope>;
    private extractProtocolInfo;
}