Restore logged-in state on page reload

client/src/state.ts

@@ -2,6 +2,7 @@ import { reactive } from "vue"
 import { Track } from "./track"
 import { Tick } from './ticks'
 import { error } from "./error"
+import { getCookie } from "./util";
 
 enum State {
     Unfetched,
@@ -31,6 +32,8 @@ class AppState {
     constructor() {
         this.tracks = new Array<Track>
         this.state = State.Unfetched
+        const name = getCookie("name")
+        if (name) this.user = { name }
     }
     streamUpdatesFromServer() {
         const source = new EventSource("/api/v1/updates")

client/src/util.ts

@@ -0,0 +1,8 @@
+export function getCookie(key: string): string | null {
+    const start = document.cookie.indexOf(key + '=')
+    if(start === -1) return null
+    let end: number | undefined = document.cookie.indexOf(';', start)
+    if(end === -1)
+        end = undefined
+    return document.cookie.substring(start + key.length + 1, end)
+}