libweb/src/portal.ts

98 lines
2.3 KiB
TypeScript

import { ErrTuple, KeyPair, Portal } from "#types.js";
import { Client } from "@lumeweb/libportal";
import { deriveChildKey } from "#keys.js";
import { ed25519 } from "@noble/curves/ed25519";
import { bytesToHex } from "@noble/hashes/utils";
import COMMUNITY_PORTAL_LIST from "@lumeweb/community-portals";
let activePortalMasterKey;
export const DEFAULT_PORTAL_LIST = COMMUNITY_PORTAL_LIST;
let ACTIVE_PORTALS = new Set<Client>();
type PortalSessionsStore = { [id: string]: string };
export function maybeInitDefaultPortals(): ErrTuple {
if (!activePortalMasterKey) {
return [null, "activePortalMasterKey not set"];
}
for (const portal of DEFAULT_PORTAL_LIST) {
addActivePortal(initPortal(portal));
}
return [null, null];
}
export function setActivePortalMasterKey(key: Uint8Array) {
activePortalMasterKey = key;
}
export function generatePortalEmail(portal: Portal) {
const keyPair = generatePortalKeyPair(portal);
const userId = bytesToHex(keyPair.publicKey.slice(0, 12));
return `${userId}@example.com`;
}
export function generatePortalKeyPair(portal: Portal): KeyPair {
const privateKey = deriveChildKey(
activePortalMasterKey,
`portal-account:${portal.id}`,
);
return {
privateKey,
publicKey: ed25519.getPublicKey(privateKey),
};
}
export function getActivePortals(): Client[] {
return [...ACTIVE_PORTALS];
}
export function addActivePortal(portal: Client) {
ACTIVE_PORTALS.add(portal);
}
export function initPortal(portal: Portal): Client {
const sessions = getPortalSessions();
let jwt: string | null = null;
if (sessions) {
if (portal.id in sessions) {
jwt = sessions[portal.id];
}
}
return new Client({
email: generatePortalEmail(portal),
portalUrl: portal.url,
privateKey: generatePortalKeyPair(portal).privateKey,
jwt: jwt as string,
});
}
export function getPortalSessions() {
if (typeof globalThis.localStorage === "undefined") {
return undefined;
}
let portalSessionsData = globalThis.localStorage.getItem("portals");
let portalSessions: PortalSessionsStore = {};
if (portalSessions) {
portalSessions = JSON.parse(
portalSessionsData as string,
) as PortalSessionsStore;
return portalSessions;
}
return undefined;
}
export function setActivePortals(portals: Client[]) {
ACTIVE_PORTALS = new Set<Client>(portals);
}