import type { IdentityVerificationRequest, IdentityVerificationResponse, IdentityVerificationAcknowledgment, ThreadId, ModuleContext, Termination } from './types.js';
import { PubKeyHex } from '../wallet/Wallet.interfaces.js';
/**
 * The Identity Layer handles identity certificate exchange and verification.
 * It is optional and pluggable.
 * Modules can use it to request/verify identity before accepting settlements.
 *
 * The runtime configuration can be used to determine whether and at what point identity
 * exchange occurs: before invoicing, before settlement, etc.
 *
 * Makers and takers can both implement this layer as needed, and request/respond to
 * identity verification at different points in the protocol.
 */
export interface IdentityLayer {
    /** Determine which certificates to request from a counterparty. */
    determineCertificatesToRequest: (args: {
        counterparty: PubKeyHex;
        threadId: ThreadId;
    }, ctx: ModuleContext) => Promise<IdentityVerificationRequest>;
    /** Respond to an incoming identity verification request. */
    respondToRequest: (args: {
        counterparty: PubKeyHex;
        threadId: ThreadId;
        request: IdentityVerificationRequest;
    }, ctx: ModuleContext) => Promise<{
        action: 'respond';
        response: IdentityVerificationResponse;
    } | {
        action: 'terminate';
        termination: Termination;
    }>;
    /** Assess whether received certificates satisfy the requirements for transaction settlement. */
    assessReceivedCertificateSufficiency: (counterparty: PubKeyHex, received: IdentityVerificationResponse, threadId: ThreadId) => Promise<IdentityVerificationAcknowledgment | Termination>;
}
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