refactor: race index by name

pkg/error/generic.go

@@ -16,8 +16,7 @@ const (
 )
 
 const (
-	ErrInputUnknownHostRace int = 3000 + iota
-	ErrInputUnknownOpponentRace
+	ErrInputUnknownRace int = 3000 + iota
 	ErrInputEntityTypeNameInvalid
 	ErrInputEntityTypeNameDuplicate
 	ErrInputEntityNotExists
@@ -42,10 +41,8 @@ func GenericErrorText(code int) string {
 		return "Storage failure"
 	case ErrGameStateInvalid:
 		return "Invalid game state"
-	case ErrInputUnknownHostRace:
-		return "Host race name is unknown to this game"
-	case ErrInputUnknownOpponentRace:
-		return "Opponent race name is unknown to this game"
+	case ErrInputUnknownRace:
+		return "Race name is unknown to this game"
 	case ErrInputEntityTypeNameInvalid:
 		return "Name has invalid length or symbols"
 	case ErrInputEntityTypeNameDuplicate:

pkg/error/input.go

@@ -1,11 +1,7 @@
 package error
 
-func NewHostRaceUnknownError(arg ...any) error {
-	return newGenericError(ErrInputUnknownHostRace, arg...)
-}
-
-func NewOpponentRaceUnknownError(arg ...any) error {
-	return newGenericError(ErrInputUnknownOpponentRace, arg...)
+func NewRaceUnknownError(arg ...any) error {
+	return newGenericError(ErrInputUnknownRace, arg...)
 }
 
 func NewEntityTypeNameValidationError(arg ...any) error {