refactor: duplicate identifier error

internal/controller/fleet.go

@@ -189,7 +189,7 @@ func (c *Cache) createFleet(ri int, name string) (int, error) {
 		return 0, e.NewEntityTypeNameValidationError("%q", n)
 	}
 	if _, ok := c.fleetIndex(ri, n); ok {
-		return 0, e.NewEntityTypeNameDuplicateError("fleet %q", n)
+		return 0, e.NewEntityDuplicateIdentifierError("fleet %q", n)
 	}
 	fleets := slices.Clone(c.g.Fleets)
 	fleets = append(fleets, game.Fleet{

internal/controller/science.go

@@ -17,7 +17,7 @@ func (c *Cache) ScienceCreate(ri int, name string, drive, weapons, shileds, carg
 		return e.NewEntityTypeNameValidationError("%q", n)
 	}
 	if sc := slices.IndexFunc(c.g.Race[ri].Sciences, func(s game.Science) bool { return s.Name == n }); sc >= 0 {
-		return e.NewEntityTypeNameDuplicateError("science %q", c.g.Race[ri].Sciences[sc].Name)
+		return e.NewEntityDuplicateIdentifierError("science %q", c.g.Race[ri].Sciences[sc].Name)
 	}
 
 	if drive < 0 {

internal/controller/science_test.go

@@ -37,7 +37,7 @@ func TestScienceCreate(t *testing.T) {
 		e.GenericErrorText(e.ErrInputEntityTypeNameInvalid))
 	assert.ErrorContains(t,
 		g.ScienceCreate(Race_0.Name, first, 0.4, 0, 0.6, 0),
-		e.GenericErrorText(e.ErrInputEntityTypeNameDuplicate))
+		e.GenericErrorText(e.ErrInputNewEntityDuplicateIdentifier))
 	assert.ErrorContains(t,
 		g.ScienceCreate(Race_0.Name, second, -0.1, 0, 1.1, 0),
 		e.GenericErrorText(e.ErrInputDriveValue))

internal/controller/ship_class.go

@@ -21,7 +21,7 @@ func (c *Cache) ShipClassCreate(ri int, typeName string, drive float64, ammo int
 		return e.NewEntityTypeNameValidationError("%q", n)
 	}
 	if st := slices.IndexFunc(c.g.Race[ri].ShipTypes, func(st game.ShipType) bool { return st.Name == typeName }); st >= 0 {
-		return e.NewEntityTypeNameDuplicateError("ship type %q", c.g.Race[ri].ShipTypes[st].Name)
+		return e.NewEntityDuplicateIdentifierError("ship class %q", c.g.Race[ri].ShipTypes[st].Name)
 	}
 	c.g.Race[ri].ShipTypes = append(c.g.Race[ri].ShipTypes, game.ShipType{
 		ID:       uuid.New(),

internal/controller/ship_class_test.go

@@ -24,7 +24,7 @@ func TestShipClassCreate(t *testing.T) {
 
 	assert.ErrorContains(t,
 		g.ShipClassCreate(Race_0.Name, Race_0_Gunship, 1, 0, 0, 0, 0),
-		e.GenericErrorText(e.ErrInputEntityTypeNameDuplicate))
+		e.GenericErrorText(e.ErrInputNewEntityDuplicateIdentifier))
 	assert.ErrorContains(t,
 		g.ShipClassCreate(UnknownRace, "Drone", 1, 0, 0, 0, 0),
 		e.GenericErrorText(e.ErrInputUnknownRace))
@@ -80,7 +80,7 @@ func TestCreateShipTypeValidation(t *testing.T) {
 			err := g.ShipClassCreate(race, tc.name+strconv.Itoa(i), tc.d, tc.a, tc.w, tc.s, tc.c)
 			assert.NoError(t, err)
 			err = g.ShipClassCreate(race, tc.name+strconv.Itoa(i), tc.d, tc.a, tc.w, tc.s, tc.c)
-			assert.ErrorContains(t, err, e.GenericErrorText(e.ErrInputEntityTypeNameDuplicate))
+			assert.ErrorContains(t, err, e.GenericErrorText(e.ErrInputNewEntityDuplicateIdentifier))
 		} else {
 			err := g.ShipClassCreate(race, tc.name, tc.d, tc.a, tc.w, tc.s, tc.c)
 			assert.ErrorContains(t, err, tc.err)

internal/controller/ship_group.go

@@ -383,6 +383,11 @@ func (c *Cache) ShipGroupBreak(ri int, groupID, newID uuid.UUID, quantity uint)
 	if !ok {
 		return e.NewEntityNotExistsError("group %s", groupID)
 	}
+	for sgi := range c.g.ShipGroups {
+		if c.g.ShipGroups[sgi].ID == newID {
+			return e.NewEntityDuplicateIdentifierError("group %s", newID)
+		}
+	}
 
 	if state := c.ShipGroup(sgi).State(); state != game.StateInOrbit {
 		return e.NewShipsBusyError()

internal/controller/ship_group_test.go

@@ -116,6 +116,9 @@ func TestShipGroupBreak(t *testing.T) {
 	assert.ErrorContains(t,
 		g.ShipGroupBreak(Race_0.Name, uuid.New(), uuid.New(), 1),
 		e.GenericErrorText(e.ErrInputEntityNotExists))
+	assert.ErrorContains(t,
+		g.ShipGroupBreak(Race_0.Name, c.ShipGroup(0).ID, c.ShipGroup(0).ID, 1),
+		e.GenericErrorText(e.ErrInputNewEntityDuplicateIdentifier))
 	assert.ErrorContains(t,
 		g.ShipGroupBreak(Race_0.Name, c.ShipGroup(0).ID, uuid.New(), 17),
 		e.GenericErrorText(e.ErrBeakGroupNumberNotEnough))

internal/error/generic.go

@@ -35,7 +35,7 @@ const (
 	ErrInputUnknownRelation
 	ErrInputSameRace
 	ErrInputEntityTypeNameInvalid
-	ErrInputEntityTypeNameDuplicate
+	ErrInputNewEntityDuplicateIdentifier
 	ErrInputEntityTypeNameEquality
 	ErrInputEntityNotExists
 	ErrInputEntityNotOwned
@@ -83,8 +83,8 @@ func GenericErrorText(code int) string {
 		return "Race name must be different from your own"
 	case ErrInputEntityTypeNameInvalid:
 		return "Name has invalid length or symbols"
-	case ErrInputEntityTypeNameDuplicate:
-		return "Name already exists"
+	case ErrInputNewEntityDuplicateIdentifier:
+		return "Entity already exists"
 	case ErrInputEntityTypeNameEquality:
 		return "Names should differ"
 	case ErrInputEntityNotExists:

internal/error/input.go

@@ -16,8 +16,8 @@ func NewEntityTypeNameValidationError(arg ...any) error {
 	return newGenericError(ErrInputEntityTypeNameInvalid, arg...)
 }
 
-func NewEntityTypeNameDuplicateError(arg ...any) error {
-	return newGenericError(ErrInputEntityTypeNameDuplicate, arg...)
+func NewEntityDuplicateIdentifierError(arg ...any) error {
+	return newGenericError(ErrInputNewEntityDuplicateIdentifier, arg...)
 }
 
 func NewEntityTypeNameEqualityError(arg ...any) error {