feat: implemented a basic store and emulatorjs

src/bun/api/cache.ts

@@ -0,0 +1,34 @@
+import { eq } from "drizzle-orm";
+import { cache } from "./app";
+import cacheSchema from "@schema/cache";
+
+export const CACHE_KEYS = {
+    ROM_PLATFORMS: 'rom-platforms',
+    STORE_GAME: (path: string) => `store-game-${path}`,
+    STORE_GAME_MANIFEST: 'store-game-manifest'
+} as const;
+
+export async function getOrCached<T> (key: string, getter: () => Promise<T>, options?: { expireMs?: number; }): Promise<T>
+{
+    const cached = await cache.query.item_cache.findFirst({ where: eq(cacheSchema.item_cache.key, key) });
+    const updated_at = new Date();
+
+    if (cached && cached.expire_at > updated_at)
+    {
+        return cached.data as T;
+    }
+
+    const data = await getter();
+
+    const expire_at = options?.expireMs ? new Date(updated_at.getTime() + options.expireMs) : new Date(updated_at.getTime() + 24 * 60 * 60 * 1000);
+
+    await cache.insert(cacheSchema.item_cache)
+        .values({ key, data, updated_at, expire_at })
+        .onConflictDoUpdate({
+            target: cacheSchema.item_cache.key,
+            set: { data, updated_at, expire_at }
+        })
+        .run();
+
+    return data;
+}