hosted-kernel/src/storage.ts

76 lines
1.6 KiB
TypeScript
Raw Normal View History

2023-07-20 19:43:41 +00:00
import {
addContextToErr,
bytesToHex,
hexToBytes,
setActivePortalMasterKey,
} from "@lumeweb/libweb";
import {
getLoginComplete,
getLogoutComplete,
setLoginComplete,
setLogoutComplete,
} from "./vars.js";
import { log, logErr, reloadKernel, sendAuthUpdate } from "./util.js";
import { loadKernel } from "./kernel.js";
function handleStorage(event: StorageEvent) {
if (event.key !== null && event.key !== "key") {
return;
}
if (getLogoutComplete()) {
reloadKernel();
return;
}
if (event.key === null && getLoginComplete()) {
return;
}
if (event.key === "key" && !getLoginComplete()) {
let userKey;
try {
userKey = getStoredUserKey();
} catch (e) {
logErr(addContextToErr(e, "user key could not be fetched"));
sendAuthUpdate();
return;
}
if (userKey === null) {
sendAuthUpdate();
return;
}
log("user is now logged in, attempting to load kernel");
setActivePortalMasterKey(userKey);
setLoginComplete(true);
loadKernel();
sendAuthUpdate();
return;
}
setLogoutComplete(true);
sendAuthUpdate();
log("attempting to do a page reload");
reloadKernel();
}
window.addEventListener("storage", handleStorage);
export function saveUserKey(key: Uint8Array) {
window.localStorage.setItem("key", bytesToHex(key));
const event = new StorageEvent("storage", {
key: "key",
});
window.dispatchEvent(event);
}
export function getStoredUserKey() {
const key = window.localStorage.getItem("key");
if (key) {
return hexToBytes(key);
}
return null;
}