refactor: game funcs moved to controller

internal/model/game/game.go

@@ -3,13 +3,9 @@ package game
 import (
 	"encoding/json"
 	"fmt"
-	"iter"
 	"maps"
-	"slices"
-	"strings"
 
 	"github.com/google/uuid"
-	e "github.com/iliadenisov/galaxy/internal/error"
 )
 
 type TechSet map[Tech]float64
@@ -48,46 +44,6 @@ func (g Game) Votes(raceID uuid.UUID) float64 {
 	return pop / 1000.
 }
 
-func (g Game) PlanetByNumber(number uint) (Planet, error) {
-	pi := slices.IndexFunc(g.Map.Planet, func(p Planet) bool { return p.Number == number })
-	if pi < 0 {
-		return Planet{}, e.NewGameStateError("PlanetByNumber: planet with number=%d not found", number)
-	}
-	return g.Map.Planet[pi], nil
-}
-
-func (g Game) ShipsInUpgrade(planetNumber uint) iter.Seq[ShipGroup] {
-	return func(yield func(ShipGroup) bool) {
-		for sg := range g.ShipGroups {
-			if g.ShipGroups[sg].Destination == planetNumber && g.ShipGroups[sg].State() == StateUpgrade {
-				if !yield(g.ShipGroups[sg]) {
-					break
-				}
-			}
-		}
-	}
-}
-
-func (g Game) raceIndex(name string) (int, error) {
-	i := slices.IndexFunc(g.Race, func(r Race) bool { return r.Name == name })
-	if i < 0 {
-		return i, e.NewRaceUnknownError(name)
-	}
-	return i, nil
-}
-
-// -----------------------------------------------------------------------------
-
-// validateTypeName always return v without leading and trailing spaces
-func validateTypeName(v string) (string, bool) {
-	s := strings.TrimSpace(v)
-	if len(s) > 0 {
-		return s, true
-	}
-	// TODO: special symbols AND include error check in all user-input test
-	return s, false
-}
-
 func (g Game) MarshalBinary() (data []byte, err error) {
 	return json.Marshal(&g)
 }