Big restructure

packages/storage/src/indexed-db.ts

@@ -0,0 +1,71 @@
+import type { Storage as StorageSchema } from "@tensamin/shared/data";
+
+const DB_NAME = "tensamin";
+const DB_VERSION = 1;
+const STORE_NAME = "storage";
+
+let dbPromise: Promise<IDBDatabase> | null = null;
+
+function openDB(): Promise<IDBDatabase> {
+  if (dbPromise) return dbPromise;
+
+  dbPromise = new Promise<IDBDatabase>((resolve, reject) => {
+    const request = indexedDB.open(DB_NAME, DB_VERSION);
+
+    request.onupgradeneeded = () => {
+      const db = request.result;
+      if (!db.objectStoreNames.contains(STORE_NAME)) {
+        db.createObjectStore(STORE_NAME);
+      }
+    };
+
+    request.onsuccess = () => resolve(request.result);
+    request.onerror = () => reject(request.error);
+  });
+
+  return dbPromise;
+}
+
+export async function getEntry<K extends keyof StorageSchema>(
+  key: K,
+): Promise<StorageSchema[K] | undefined> {
+  const db = await openDB();
+  return new Promise((resolve, reject) => {
+    const tx = db.transaction(STORE_NAME, "readonly");
+    const store = tx.objectStore(STORE_NAME);
+    const request = store.get(key as string);
+
+    request.onsuccess = () =>
+      resolve(request.result as StorageSchema[K] | undefined);
+    request.onerror = () => reject(request.error);
+  });
+}
+
+export async function setEntry<K extends keyof StorageSchema>(
+  key: K,
+  value: StorageSchema[K],
+): Promise<void> {
+  const db = await openDB();
+  return new Promise((resolve, reject) => {
+    const tx = db.transaction(STORE_NAME, "readwrite");
+    const store = tx.objectStore(STORE_NAME);
+    const request = store.put(value, key as string);
+
+    request.onsuccess = () => resolve();
+    request.onerror = () => reject(request.error);
+  });
+}
+
+export async function deleteEntry<K extends keyof StorageSchema>(
+  key: K,
+): Promise<void> {
+  const db = await openDB();
+  return new Promise((resolve, reject) => {
+    const tx = db.transaction(STORE_NAME, "readwrite");
+    const store = tx.objectStore(STORE_NAME);
+    const request = store.delete(key as string);
+
+    request.onsuccess = () => resolve();
+    request.onerror = () => reject(request.error);
+  });
+}