feat: Implement storage provider management functionality

- Added new routes and handlers for managing storage providers, including creation, editing, and deletion.
- Introduced a new StorageProvider form component for user input.
- Enhanced the database schema to support storage provider references in transfer configurations.
- Implemented encryption for sensitive fields in storage provider data.
- Added tests for storage provider API endpoints and integration with the database.
- Updated frontend components to support storage provider selection and testing.

internal/db/db.go

@@ -6,12 +6,14 @@ import (
 	"path/filepath"
 
 	"github.com/glebarez/sqlite"
+	"github.com/starfleetcptn/gomft/internal/db/middleware"
 	"github.com/starfleetcptn/gomft/internal/db/migrations"
 	"gorm.io/gorm"
 )
 
 type DB struct {
 	*gorm.DB
+	encryptionMiddleware *middleware.EncryptionMiddleware
 }
 
 func Initialize(dbPath string) (*DB, error) {
@@ -48,7 +50,17 @@ func Initialize(dbPath string) (*DB, error) {
 		return nil, fmt.Errorf("failed to reconnect to database after migrations: %v", err)
 	}
 
-	return &DB{DB: db}, nil
+	// Initialize and register the encryption middleware
+	encryptionMiddleware, err := middleware.NewEncryptionMiddleware()
+	if err != nil {
+		return nil, fmt.Errorf("failed to initialize encryption middleware: %v", err)
+	}
+	encryptionMiddleware.RegisterHooks(db)
+
+	return &DB{
+		DB:                   db,
+		encryptionMiddleware: encryptionMiddleware,
+	}, nil
 }
 
 // ReopenWithoutMigrations reopens the database connection without running migrations
@@ -60,7 +72,17 @@ func ReopenWithoutMigrations(dbPath string) (*DB, error) {
 		return nil, fmt.Errorf("failed to connect to database: %v", err)
 	}
 
-	return &DB{DB: db}, nil
+	// Initialize and register the encryption middleware
+	encryptionMiddleware, err := middleware.NewEncryptionMiddleware()
+	if err != nil {
+		return nil, fmt.Errorf("failed to initialize encryption middleware: %v", err)
+	}
+	encryptionMiddleware.RegisterHooks(db)
+
+	return &DB{
+		DB:                   db,
+		encryptionMiddleware: encryptionMiddleware,
+	}, nil
 }
 
 func (db *DB) Close() error {
@@ -70,3 +92,41 @@ func (db *DB) Close() error {
 	}
 	return sqlDB.Close()
 }
+
+// EnableEncryption enables the encryption middleware
+func (db *DB) EnableEncryption() {
+	if db.encryptionMiddleware != nil {
+		db.encryptionMiddleware.Enable()
+	}
+}
+
+// DisableEncryption disables the encryption middleware
+func (db *DB) DisableEncryption() {
+	if db.encryptionMiddleware != nil {
+		db.encryptionMiddleware.Disable()
+	}
+}
+
+// IsEncryptionEnabled returns whether the encryption middleware is enabled
+func (db *DB) IsEncryptionEnabled() bool {
+	if db.encryptionMiddleware != nil {
+		return db.encryptionMiddleware.IsEnabled()
+	}
+	return false
+}
+
+// Connect initializes a database connection using the default path
+// This is used by CLI commands to connect to the database
+func Connect() (*DB, error) {
+	// Get data directory from environment or use default
+	dataDir := os.Getenv("DATA_DIR")
+	if dataDir == "" {
+		dataDir = "./data"
+	}
+
+	// Use default database path
+	dbPath := filepath.Join(dataDir, "gomft.db")
+
+	// Initialize the database
+	return Initialize(dbPath)
+}