add turns and update token logic.

src/lib/server/requestTools.ts

@@ -0,0 +1,46 @@
+import type { LocalCredentials } from "./auth";
+
+export enum ResourceId {
+	Game = "gameid",
+}
+
+export function getUser(locals: { user: LocalCredentials }) {
+	// SvelteKit screws up this type somehow, and it's important to explicitely set it
+	// here.
+	const user: LocalCredentials = locals.user;
+
+	if (user.kind !== "Bearer") {
+		throw new Error("bad user information");
+	}
+
+	return user;
+}
+
+export function getParam(params: Partial<Record<string, string>>, resource: ResourceId) {
+	const id = params[resource];
+
+	if (!id) {
+		return null;
+	}
+
+	return id;
+}
+
+export async function getBody<T>(
+	request: Request,
+	dataGuard: (body: unknown) => body is T,
+) {
+	let body: unknown;
+
+	try {
+		body = await request.json();
+	} catch (err) {
+		return null;
+	}
+
+	if (!dataGuard(body)) {
+		throw new Error("data guard failed");
+	}
+
+	return body;
+}