Implement unique key generation for weapon grants to prevent overwrites

server/internal/service/gacha.go

@@ -291,11 +291,11 @@ func (s *GachaServiceServer) Draw(ctx context.Context, req *pb.DrawRequest) (*pb
 	bs := updatedUser.Gacha.BannerStates[entry.GachaId]
 	nextGacha := toProtoGacha(*entry, &bs)
 
-	diff := userdata.BuildDiffFromTables(userdata.SelectTables(
-		userdata.FullClientTableMap(updatedUser),
-		gachaDiffTables,
-	))
-	userdata.AddWeaponStoryDiff(diff, updatedUser, s.handler.Granter.DrainChangedStoryWeaponIds())
+	changedStoryIds := s.handler.Granter.DrainChangedStoryWeaponIds()
+	diffOrder := append(gachaDiffTables, "IUserWeaponStory")
+	allTables := userdata.FullClientTableMap(updatedUser)
+	diff := userdata.BuildDiffFromTablesOrdered(userdata.SelectTables(allTables, diffOrder), diffOrder)
+	userdata.AddWeaponStoryDiff(diff, updatedUser, changedStoryIds)
 
 	return &pb.DrawResponse{
 		NextGacha:          nextGacha,

server/internal/store/helpers.go

@@ -156,6 +156,15 @@ func (g *PossessionGranter) GrantCostume(user *UserState, costumeId int32, nowMi
 
 func (g *PossessionGranter) GrantWeapon(user *UserState, weaponId int32, nowMillis int64) {
 	key := fmt.Sprintf("reward-weapon-%d-%d", weaponId, nowMillis)
+	if _, exists := user.Weapons[key]; exists {
+		for i := 2; ; i++ {
+			candidate := fmt.Sprintf("%s-%d", key, i)
+			if _, exists := user.Weapons[candidate]; !exists {
+				key = candidate
+				break
+			}
+		}
+	}
 	user.Weapons[key] = WeaponState{
 		UserWeaponUuid:      key,
 		WeaponId:            weaponId,

server/internal/userdata/proj_user.go

@@ -45,6 +45,7 @@ func init() {
 			UserId:        user.UserId,
 			PaidGem:       user.Gem.PaidGem,
 			FreeGem:       user.Gem.FreeGem,
+			LatestVersion: gametime.NowMillis(),
 		})
 		return s
 	})

server/internal/userdata/state_projection.go

@@ -115,6 +115,9 @@ func FirstEntranceClientTableMap(user store.UserState) map[string]string {
 		"IUserParts",
 		"IUserWeaponNote",
 		"IUserWeaponStory",
+		"IUserWeaponSkill",
+		"IUserWeaponAbility",
+		"IUserWeaponAwaken",
 		"IUserCostumeActiveSkill",
 		"IUserDeckTypeNote",
 	} {

server/internal/userdata/userdata.go

@@ -107,12 +107,13 @@ type EntityIUserStatus struct {
 	LatestVersion         int64    // Key(5)
 }
 
-// EntityIUserGem mirrors EntityIUserGem [Key(0..2)].
+// EntityIUserGem mirrors EntityIUserGem [Key(0..3)].
 type EntityIUserGem struct {
 	_msgpack      struct{} `msgpack:",asArray"`
 	UserId        int64    `json:"userId"`        // Key(0)
 	PaidGem       int32    `json:"paidGem"`       // Key(1)
 	FreeGem       int32    `json:"freeGem"`       // Key(2)
+	LatestVersion int64    `json:"latestVersion"` // Key(3)
 }
 
 // EntityIUserProfile mirrors EntityIUserProfile [Key(0..7)].