@credo-ts/core/build/modules/dids/methods/peer/peerDidNumAlgo2.mjs

<p align="center"> <br /> <img alt="Credo Logo" src="https://github.com/openwallet-foundation/credo-ts/blob/c7886cb8377ceb8ee4efe8d264211e561a75072d/images/credo-logo.png" height="250px" /> </p> <h1 align="center"><b>Credo - Core</b></h1

import { CredoError } from "../../../../error/CredoError.mjs";
import "../../../../error/index.mjs";
import { JsonEncoder } from "../../../../utils/JsonEncoder.mjs";
import { JsonTransformer } from "../../../../utils/JsonTransformer.mjs";
import "../../../../utils/index.mjs";
import { PublicJwk } from "../../../kms/jwk/PublicJwk.mjs";
import "../../../kms/index.mjs";
import { parseDid } from "../../domain/parse.mjs";
import { getPublicJwkFromVerificationMethod, getVerificationMethodsForPublicJwk } from "../../domain/key-type/keyDidMapping.mjs";
import { DidDocumentService } from "../../domain/service/DidDocumentService.mjs";
import { DidDocumentBuilder } from "../../domain/DidDocumentBuilder.mjs";
import "../../domain/index.mjs";
//#region src/modules/dids/methods/peer/peerDidNumAlgo2.ts
var DidPeerPurpose = /* @__PURE__ */ function(DidPeerPurpose) {
	DidPeerPurpose["Assertion"] = "A";
	DidPeerPurpose["Encryption"] = "E";
	DidPeerPurpose["Verification"] = "V";
	DidPeerPurpose["CapabilityInvocation"] = "I";
	DidPeerPurpose["CapabilityDelegation"] = "D";
	DidPeerPurpose["Service"] = "S";
	return DidPeerPurpose;
}(DidPeerPurpose || {});
function isDidPeerKeyPurpose(purpose) {
	return purpose !== "S" && Object.values(DidPeerPurpose).includes(purpose);
}
const didPeerAbbreviations = {
	type: "t",
	DIDCommMessaging: "dm",
	serviceEndpoint: "s",
	routingKeys: "r",
	accept: "a"
};
const didPeerExpansions = {
	t: "type",
	dm: "DIDCommMessaging",
	s: "serviceEndpoint",
	r: "routingKeys",
	a: "accept"
};
function didToNumAlgo2DidDocument(did) {
	const entries = parseDid(did).id.substring(2).split(".");
	const didDocument = new DidDocumentBuilder(did);
	let serviceIndex = 0;
	let keyIndex = 1;
	for (const entry of entries) {
		const entryContent = entry.substring(1);
		const purpose = entry[0];
		if (purpose === "S") {
			let services = JsonEncoder.fromBase64Url(entryContent);
			services = Array.isArray(services) ? services : [services];
			for (let service of services) {
				service = expandServiceAbbreviations(service);
				service.id = `${did}#${service.type.toLowerCase()}-${serviceIndex++}`;
				didDocument.addService(JsonTransformer.fromJSON(service, DidDocumentService));
			}
		} else {
			const publicJwk = PublicJwk.fromFingerprint(entryContent);
			const verificationMethods = getVerificationMethodsForPublicJwk(publicJwk, did);
			for (const verificationMethod of verificationMethods) {
				verificationMethod.id = `${did}#key-${keyIndex++}`;
				addVerificationMethodToDidDocument(didDocument, verificationMethod, purpose);
			}
		}
	}
	return didDocument.build();
}
function didDocumentToNumAlgo2Did(didDocument) {
	const purposeMapping = [
		["A", "assertionMethod"],
		["E", "keyAgreement"],
		["V", "authentication"],
		["I", "capabilityInvocation"],
		["D", "capabilityDelegation"]
	];
	let did = "did:peer:2";
	const keys = [];
	for (const [purpose, entries] of purposeMapping) for (const entry of didDocument.findVerificationMethodsByPurpose([entries])) {
		const encoded = `.${purpose}${getPublicJwkFromVerificationMethod(entry).fingerprint}`;
		keys.push({
			id: entry.id,
			encoded
		});
	}
	const prefix = "key-";
	if (!keys.every((key) => key.id.split("#")[1]?.startsWith(prefix))) throw new CredoError("Ids for keys within DID Document for did:peer:2 creation must follow the pattern `#key-n`");
	did += keys.sort((a, b) => {
		const aFragment = a.id.split("#")[1];
		const bFragment = b.id.split("#")[1];
		return Number(aFragment.replace(prefix, "")) - Number(bFragment.replace(prefix, ""));
	}).map((key) => key.encoded).join("");
	if (didDocument.service && didDocument.service.length > 0) {
		const abbreviatedServices = didDocument.service.map((service) => {
			const serviceJson = JsonTransformer.toJSON(service);
			serviceJson.id = void 0;
			return abbreviateServiceJson(serviceJson);
		});
		for (const abbreviatedService of abbreviatedServices) {
			const encodedService = JsonEncoder.toBase64Url(abbreviatedService);
			did += `.S${encodedService}`;
		}
	}
	return did;
}
function expandServiceAbbreviations(service) {
	const expand = (abbreviated) => didPeerExpansions[abbreviated] ?? abbreviated;
	const expandJson = (json) => {
		if (!json) return json;
		if (typeof json === "number") return json;
		if (typeof json === "string") return expand(json);
		if (Array.isArray(json)) return json.map(expandJson);
		if (typeof json === "object") return Object.entries(json).reduce((jsonBody, [key, value]) => ({
			...jsonBody,
			[expand(key)]: expandJson(value)
		}), {});
	};
	const fullService = expandJson(service);
	if ("t" in service && service.t === "dm" && typeof service.serviceEndpoint === "string") return {
		...fullService,
		type: "DIDComm"
	};
	return fullService;
}
function abbreviateServiceJson(service) {
	const abbreviate = (expanded) => didPeerAbbreviations[expanded] ?? expanded;
	return Object.entries(service).reduce((serviceBody, [key, value]) => ({
		...serviceBody,
		[abbreviate(key)]: abbreviate(value)
	}), {});
}
function addVerificationMethodToDidDocument(didDocument, verificationMethod, purpose) {
	const purposeMapping = {
		["A"]: didDocument.addAssertionMethod.bind(didDocument),
		["E"]: didDocument.addKeyAgreement.bind(didDocument),
		["V"]: didDocument.addAuthentication.bind(didDocument),
		["I"]: didDocument.addCapabilityInvocation.bind(didDocument),
		["D"]: didDocument.addCapabilityDelegation.bind(didDocument)
	};
	if (isDidPeerKeyPurpose(purpose)) {
		const addVerificationMethod = purposeMapping[purpose];
		addVerificationMethod(verificationMethod);
	} else throw new CredoError(`Unsupported peer did purpose '${purpose}'`);
}
//#endregion
export { didDocumentToNumAlgo2Did, didToNumAlgo2DidDocument };

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