init

backend/src/storage/file-storage.service.ts

@@ -0,0 +1,24 @@
+import { Injectable } from '@nestjs/common';
+import * as fs from 'fs';
+import * as path from 'path';
+
+@Injectable()
+export class FileStorageService {
+  read<T>(filepath: string): T | null {
+    try {
+      if (!fs.existsSync(filepath)) return null;
+      const content = fs.readFileSync(filepath, 'utf-8');
+      return JSON.parse(content) as T;
+    } catch {
+      return null;
+    }
+  }
+
+  write<T>(filepath: string, data: T): void {
+    const dir = path.dirname(filepath);
+    if (!fs.existsSync(dir)) {
+      fs.mkdirSync(dir, { recursive: true });
+    }
+    fs.writeFileSync(filepath, JSON.stringify(data, null, 2), 'utf-8');
+  }
+}