reconnect on new db

src/gadgetbridge/client.ts

@@ -1,3 +1,4 @@
+import { watchFile } from "node:fs";
 import { DatabaseSync } from "node:sqlite";
 
 export type StepRow = {
@@ -7,10 +8,23 @@ export type StepRow = {
 
 export class GadgetbridgeClient {
 	private db: DatabaseSync;
+	private readonly dbPath: string;
+	private readonly oldDbPath: string;
 
 	constructor(dbPath: string, oldDbPath: string) {
-		this.db = new DatabaseSync(dbPath, { open: true });
+		this.dbPath = dbPath;
-		this.db.exec(`ATTACH DATABASE '${oldDbPath}' AS old`);
+		this.oldDbPath = oldDbPath;
+		this.db = this.openDb();
+		watchFile(dbPath, { interval: 20 * 60 * 1000 }, () => {
+			try { this.db.close(); } catch {}
+			this.db = this.openDb();
+		});
+	}
+
+	private openDb(): DatabaseSync {
+		const db = new DatabaseSync(this.dbPath, { open: true });
+		db.exec(`ATTACH DATABASE '${this.oldDbPath}' AS old`);
+		return db;
 	}
 
 	getStepsPerDay(fromTimestamp: number, toTimestamp: number): StepRow[] {