Add projects

backend/internal/auth/models.go

@@ -0,0 +1,17 @@
+// Package auth provides authentication functionality for various AI service providers.
+// It includes interfaces and implementations for token storage and authentication methods.
+package auth
+
+// TokenStorage defines the interface for storing authentication tokens.
+// Implementations of this interface should provide methods to persist
+// authentication tokens to a file system location.
+type TokenStorage interface {
+	// SaveTokenToFile persists authentication tokens to the specified file path.
+	//
+	// Parameters:
+	//   - authFilePath: The file path where the authentication tokens should be saved
+	//
+	// Returns:
+	//   - error: An error if the save operation fails, nil otherwise
+	SaveTokenToFile(authFilePath string) error
+}