refactor: race index by name

pkg/model/game/planet.go

@@ -2,6 +2,7 @@ package game
 
 import (
 	"math"
+	"slices"
 
 	"github.com/google/uuid"
 	e "github.com/iliadenisov/galaxy/pkg/error"
@@ -77,14 +78,14 @@ func (p *Planet) IncreasePopulation() {
 }
 
 func (g Game) RenamePlanet(raceName string, planetNumber int, typeName string) error {
-	raceID, err := g.hostRaceID(raceName)
+	ri, err := g.raceIndex(raceName)
 	if err != nil {
 		return err
 	}
-	return g.renamePlanetInternal(raceID, planetNumber, typeName)
+	return g.renamePlanetInternal(ri, planetNumber, typeName)
 }
 
-func (g Game) renamePlanetInternal(race uuid.UUID, number int, name string) error {
+func (g Game) renamePlanetInternal(ri int, number int, name string) error {
 	n, ok := validateTypeName(name)
 	if !ok {
 		return e.NewEntityTypeNameValidationError("%q", n)
@@ -92,15 +93,13 @@ func (g Game) renamePlanetInternal(race uuid.UUID, number int, name string) erro
 	if number < 0 {
 		return e.NewPlanetNumberError(number)
 	}
-	num := uint(number)
-	for pl := range g.Map.Planet {
-		if g.Map.Planet[pl].Number == num {
-			if g.Map.Planet[pl].Owner != race {
-				return e.NewEntityNotOwnedError("planet %#d", num)
-			}
-			g.Map.Planet[pl].Name = n
-			return nil
-		}
+	pl := slices.IndexFunc(g.Map.Planet, func(p Planet) bool { return p.Number == uint(number) })
+	if pl < 0 {
+		return e.NewEntityNotExistsError("planet #%d", number)
 	}
-	return e.NewEntityNotExistsError("planet #%d", number)
+	if g.Map.Planet[pl].Owner != g.Race[ri].ID {
+		return e.NewEntityNotOwnedError("planet %#d", number)
+	}
+	g.Map.Planet[pl].Name = n
+	return nil
 }