feat: A whole slew of things

- Use a md5 hash of the session cookie value as key for session validity check
- Introduce global state
- Introduce a common interface for form logic, and implement it on the sign-in form
- Introduce static resolve() on all services instead of new-upping all over.
- Implement /portal on the frontend to support giving the frontend a inital context from server or anywhere.
- Show a notification when users sign in for the first time after validating their email

1 files changed, 38 insertions, 0 deletions

diff --git a/code/app/src/help/cache.ts b/code/app/src/help/cache.ts
new file mode 100644
index 0000000..e253399
--- /dev/null
+++ b/code/app/src/help/cache.ts
@@ -0,0 +1,38 @@
+import { Temporal } from "temporal-polyfill";
+import { log_debug } from "$help/logger";
+
+let cache = {};
+
+export const CacheKeys = {
+    isAuthenticated: "isAuthenticated"
+}
+
+export async function cached_result_async<T>(key: string, staleAfterSeconds: number, get_result: any, forceRefresh: boolean = false) {
+    if (!cache[key]) {
+        cache[key] = {
+            l: 0,
+            c: undefined as T,
+        };
+    }
+    const staleEpoch = ((cache[key]?.l ?? 0) + staleAfterSeconds);
+    const isStale = forceRefresh || (staleEpoch < Temporal.Now.instant().epochSeconds);
+    if (isStale || !cache[key]?.c) {
+        cache[key].c = await get_result();
+        cache[key].l = Temporal.Now.instant().epochSeconds;
+    }
+
+    log_debug("Ran cached_result_async", {
+        cacheKey: key,
+        isStale,
+        cache: cache[key],
+        staleEpoch,
+    });
+
+    return cache[key].c as T;
+}
+
+export function clear_cache(key: string) {
+    if (!key) throw new Error("No key was specified");
+    cache[key].c = undefined;
+    log_debug("Cleared cache with key: " + key);
+}
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