feat: add clean-db script to remove database files safely

Co-authored-by: Copilot <copilot@github.com>

Author: rajbos

sharing-server/clean-db.js

@@ -0,0 +1,42 @@
+const { rmSync, existsSync } = require('fs');
+const net = require('net');
+
+const port = parseInt(process.env.PORT ?? '3000', 10);
+
+function isServerRunning(port) {
+	return new Promise((resolve) => {
+		const socket = new net.Socket();
+		socket.setTimeout(500);
+		socket.on('connect', () => { socket.destroy(); resolve(true); });
+		socket.on('error', () => resolve(false));
+		socket.on('timeout', () => { socket.destroy(); resolve(false); });
+		socket.connect(port, '127.0.0.1');
+	});
+}
+
+async function main() {
+	if (await isServerRunning(port)) {
+		console.error(`Error: the sharing server is still running on port ${port}.`);
+		console.error('Stop it first, then re-run npm run clean:db.');
+		process.exit(1);
+	}
+
+	const files = ['./data/sharing.db', './data/sharing.db-shm', './data/sharing.db-wal'];
+	files.forEach(f => {
+		if (existsSync(f)) {
+			try {
+				rmSync(f);
+				console.log('Removed ' + f);
+			} catch (err) {
+				if (err.code === 'EPERM' || err.code === 'EBUSY') {
+					console.error(`Cannot remove ${f} — the file is locked.`);
+					process.exit(1);
+				}
+				throw err;
+			}
+		}
+	});
+	console.log('Done.');
+}
+
+main();

sharing-server/package.json

@@ -14,6 +14,8 @@
     "build:production": "node esbuild.js --production",
     "start": "node --env-file=.env dist/server.js",
     "dev": "node --env-file=.env --watch dist/server.js",
+    "serve": "node esbuild.js && node --env-file=.env --watch dist/server.js",
+    "clean:db": "node clean-db.js",
     "update": "npm ci && node esbuild.js",
     "check-types": "tsc --noEmit"
   },