refactor

internal/domain/entities/errors.go

@@ -0,0 +1,19 @@
+package entities
+
+import "errors"
+
+// Domain errors
+var (
+	ErrInvalidUsername      = errors.New("username is required")
+	ErrInvalidEmail         = errors.New("email is required")
+	ErrInvalidPassword      = errors.New("password is required")
+	ErrInvalidCounterName   = errors.New("counter name is required")
+	ErrInvalidUserID        = errors.New("invalid user ID")
+	ErrInvalidCounterID     = errors.New("invalid counter ID")
+	ErrInvalidEntryValue    = errors.New("entry value cannot be zero")
+	ErrUserNotFound         = errors.New("user not found")
+	ErrCounterNotFound      = errors.New("counter not found")
+	ErrCounterEntryNotFound = errors.New("counter entry not found")
+	ErrUserAlreadyExists    = errors.New("user already exists")
+	ErrInvalidCredentials   = errors.New("invalid credentials")
+)