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/migrations/014_add_storage_providers.go

@@ -0,0 +1,66 @@
+package migrations
+
+import (
+	"github.com/go-gormigrate/gormigrate/v2"
+	"gorm.io/gorm"
+)
+
+// AddStorageProviders adds the storage_providers table
+func AddStorageProviders() *gormigrate.Migration {
+	return &gormigrate.Migration{
+		ID: "014_add_storage_providers",
+		Migrate: func(tx *gorm.DB) error {
+			// Create the storage_providers table
+			if err := tx.Exec(`CREATE TABLE IF NOT EXISTS storage_providers (
+				id INTEGER PRIMARY KEY AUTOINCREMENT,
+				name VARCHAR(255) NOT NULL,
+				type VARCHAR(50) NOT NULL,
+				host VARCHAR(255),
+				port INTEGER DEFAULT 22,
+				username VARCHAR(255),
+				encrypted_password TEXT,
+				key_file TEXT,
+				bucket VARCHAR(255),
+				region VARCHAR(255),
+				access_key VARCHAR(255),
+				encrypted_secret_key TEXT,
+				endpoint VARCHAR(255),
+				share VARCHAR(255),
+				domain VARCHAR(255),
+				passive_mode BOOLEAN DEFAULT TRUE,
+				client_id VARCHAR(255),
+				encrypted_client_secret TEXT,
+				encrypted_refresh_token TEXT,
+				drive_id VARCHAR(255),
+				team_drive VARCHAR(255),
+				read_only BOOLEAN DEFAULT FALSE,
+				start_year INTEGER,
+				include_archived BOOLEAN DEFAULT FALSE,
+				use_builtin_auth BOOLEAN DEFAULT TRUE,
+				authenticated BOOLEAN DEFAULT FALSE,
+				created_by INTEGER NOT NULL,
+				created_at DATETIME,
+				updated_at DATETIME,
+				FOREIGN KEY (created_by) REFERENCES users(id),
+				UNIQUE(name, created_by)
+			)`).Error; err != nil {
+				return err
+			}
+
+			// Create index on type for faster filtering
+			if err := tx.Exec(`CREATE INDEX idx_storage_providers_type ON storage_providers(type)`).Error; err != nil {
+				return err
+			}
+
+			return nil
+		},
+		Rollback: func(tx *gorm.DB) error {
+			// Drop the storage_providers table
+			if err := tx.Exec(`DROP TABLE IF EXISTS storage_providers`).Error; err != nil {
+				return err
+			}
+
+			return nil
+		},
+	}
+}

internal/db/migrations/015_add_provider_refs_to_transfer_config.go

@@ -0,0 +1,55 @@
+package migrations
+
+import (
+	"github.com/go-gormigrate/gormigrate/v2"
+	"gorm.io/gorm"
+)
+
+// AddProviderRefsToTransferConfig adds the storage provider reference fields to the transfer_configs table
+func AddProviderRefsToTransferConfig() *gormigrate.Migration {
+	return &gormigrate.Migration{
+		ID: "015_add_provider_refs_to_transfer_config",
+		Migrate: func(tx *gorm.DB) error {
+			// Add source_provider_id and destination_provider_id columns to transfer_configs table
+			if err := tx.Exec(`ALTER TABLE transfer_configs ADD COLUMN source_provider_id INTEGER REFERENCES storage_providers(id)`).Error; err != nil {
+				return err
+			}
+
+			if err := tx.Exec(`ALTER TABLE transfer_configs ADD COLUMN destination_provider_id INTEGER REFERENCES storage_providers(id)`).Error; err != nil {
+				return err
+			}
+
+			// Create indexes for better performance when joining with the storage_providers table
+			if err := tx.Exec(`CREATE INDEX idx_transfer_configs_source_provider_id ON transfer_configs(source_provider_id)`).Error; err != nil {
+				return err
+			}
+
+			if err := tx.Exec(`CREATE INDEX idx_transfer_configs_destination_provider_id ON transfer_configs(destination_provider_id)`).Error; err != nil {
+				return err
+			}
+
+			return nil
+		},
+		Rollback: func(tx *gorm.DB) error {
+			// Drop indexes first
+			if err := tx.Exec(`DROP INDEX IF EXISTS idx_transfer_configs_source_provider_id`).Error; err != nil {
+				return err
+			}
+
+			if err := tx.Exec(`DROP INDEX IF EXISTS idx_transfer_configs_destination_provider_id`).Error; err != nil {
+				return err
+			}
+
+			// Remove columns
+			if err := tx.Exec(`ALTER TABLE transfer_configs DROP COLUMN source_provider_id`).Error; err != nil {
+				return err
+			}
+
+			if err := tx.Exec(`ALTER TABLE transfer_configs DROP COLUMN destination_provider_id`).Error; err != nil {
+				return err
+			}
+
+			return nil
+		},
+	}
+}

internal/db/migrations/migrations.go

@@ -27,6 +27,8 @@ func GetMigrations(db *gorm.DB) *gormigrate.Gormigrate {
 		RecoverNotificationServicesRename(), // 012b
 		RecoverAuthProvidersRename(),        // 012c
 		CleanupInvalidBooleans(),            // 013
+		AddStorageProviders(),               // 014
+		AddProviderRefsToTransferConfig(),   // 015
 	)
 
 	return gormigrate.New(db, gormigrate.DefaultOptions, migrations)