feat: initial working version of project manager

app/src/lib/project-manager/project-database.svelte.ts

@@ -0,0 +1,54 @@
+import type { Graph } from '@nodarium/types';
+import { type IDBPDatabase, openDB } from 'idb';
+
+export interface GraphDatabase {
+  projects: Graph;
+}
+
+const DB_NAME = 'nodarium-graphs';
+const DB_VERSION = 1;
+const STORE_NAME = 'graphs';
+
+let dbPromise: Promise<IDBPDatabase<GraphDatabase>> | null = null;
+
+export function getDB() {
+  if (!dbPromise) {
+    dbPromise = openDB<GraphDatabase>(DB_NAME, DB_VERSION, {
+      upgrade(db) {
+        if (!db.objectStoreNames.contains(STORE_NAME)) {
+          db.createObjectStore(STORE_NAME, { keyPath: 'id' });
+        }
+      }
+    });
+  }
+  return dbPromise;
+}
+
+export async function getGraph(id: number): Promise<Graph | undefined> {
+  const db = await getDB();
+  return db.get(STORE_NAME, id);
+}
+
+export async function saveGraph(graph: Graph): Promise<Graph> {
+  const db = await getDB();
+  graph.meta = { ...graph.meta, lastModified: new Date().toISOString() };
+  console.log('SAVING GRAPH', { graph });
+  await db.put(STORE_NAME, graph);
+  return graph;
+}
+
+export async function deleteGraph(id: number): Promise<void> {
+  const db = await getDB();
+  await db.delete(STORE_NAME, id);
+  console.log('DELETE GRAPH', { id });
+}
+
+export async function getGraphs(): Promise<Graph[]> {
+  const db = await getDB();
+  return db.getAll(STORE_NAME);
+}
+
+export async function clear(): Promise<void> {
+  const db = await getDB();
+  return db.clear(STORE_NAME);
+}