/**
 * Copyright © 2023 Nevis Security AG. All rights reserved.
 */

import { UserVerificationContext } from './UserVerificationContext';
import type { PinUserVerificationError } from '../../error/userVerification/PinUserVerificationError';
import { PinUserVerificationErrorConverter } from '../../error/userVerification/PinUserVerificationErrorConverter';
import { Authenticator } from '../../localData/Authenticator';
import { PinAuthenticatorProtectionStatus } from '../pin/PinAuthenticatorProtectionStatus';

/**
 * The object providing information about the PIN user verification
 * (i.e. the user credential validation) operation to be done.
 *
 * This object contains the information required to ask the user to authenticate:
 * the authenticator to be used, whether there were previous errors authenticating, etc.
 *
 * @see {@link PinUserVerifier.verifyPin}
 */
export abstract class PinUserVerificationContext extends UserVerificationContext {
	/**
	 * The authenticator protection status.
	 */
	abstract authenticatorProtectionStatus: PinAuthenticatorProtectionStatus;

	/**
	 * When a recoverable error occurred during the last credential verification, it returns the
	 * object describing the last error.
	 *
	 * If present, this means that an invalid PIN was provided in the previous invocation to
	 * {@link PinUserVerificationHandler.verifyPin} and thus the protection status is
	 * {@link PinProtectionStatusLastAttemptFailed}.
	 */
	abstract lastRecoverableError?: PinUserVerificationError;

	/**
	 * Alternate constructor that creates a {@link UserVerificationContext} from a json.
	 *
	 * @param json contains the source for instance creation.
	 * @returns the created {@link PinUserVerificationContext} instance.
	 */
	static fromJson(json: any): PinUserVerificationContext {
		return PinUserVerificationContextImpl.fromJson(json);
	}
}

export class PinUserVerificationContextImpl extends PinUserVerificationContext {
	authenticator: Authenticator;
	authenticatorProtectionStatus: PinAuthenticatorProtectionStatus;
	lastRecoverableError?: PinUserVerificationError;

	constructor(
		authenticator: Authenticator,
		authenticatorProtectionStatus: PinAuthenticatorProtectionStatus,
		lastRecoverableError?: PinUserVerificationError
	) {
		super();
		this.authenticator = authenticator;
		this.authenticatorProtectionStatus = authenticatorProtectionStatus;
		this.lastRecoverableError = lastRecoverableError;
	}

	static fromJson(json: any): PinUserVerificationContextImpl {
		const authenticator = Authenticator.fromJson(json.authenticator);
		const status = PinAuthenticatorProtectionStatus.fromJson(
			json.authenticatorProtectionStatus
		);
		const lastRecoverableError =
			json.lastRecoverableError &&
			new PinUserVerificationErrorConverter(json.lastRecoverableError).convert();
		return new PinUserVerificationContextImpl(authenticator, status, lastRecoverableError);
	}
}