data export and backup utilities

lib/backup-utils.ts

@@ -0,0 +1,49 @@
+import { exec } from 'child_process'
+import path from 'path'
+import { promisify } from 'util'
+
+const execAsync = promisify(exec)
+
+export async function createDatabaseBackup(): Promise<string> {
+  const dbPath = path.join(process.cwd(), 'database', 'antihoax.db')
+  const backupPath = path.join(process.cwd(), 'backups', `backup_${Date.now()}.db`)
+  
+  try {
+    // Ensure backup directory exists
+    await execAsync('mkdir -p backups')
+    
+    // Create SQLite backup using .backup command
+    await execAsync(`sqlite3 "${dbPath}" ".backup '${backupPath}'"`)
+    
+    return backupPath
+  } catch (error) {
+    console.error('Backup failed:', error)
+    throw new Error('Database backup failed')
+  }
+}
+
+export async function restoreDatabase(backupPath: string): Promise<void> {
+  const dbPath = path.join(process.cwd(), 'database', 'antihoax.db')
+  
+  try {
+    // Create backup of current DB first
+    await createDatabaseBackup()
+    
+    // Copy backup to main location
+    await execAsync(`cp "${backupPath}" "${dbPath}"`)
+    
+    console.log('Database restored successfully')
+  } catch (error) {
+    console.error('Restore failed:', error)
+    throw new Error('Database restore failed')
+  }
+}
+
+export async function listBackups(): Promise<string[]> {
+  try {
+    const { stdout } = await execAsync('ls -la backups/*.db 2>/dev/null || true')
+    return stdout.trim() ? stdout.trim().split('\n') : []
+  } catch {
+    return []
+  }
+}