db: include the Team ID in the error message (#6056)

This means that when using the API to create a new team, the output
contains the existing team ID, not just the name.
While there may be the thought that this reveals sensitive
information, it is never the case that a user can create or update
a team without permission to view the teams in the first place.

internal/db/error.go

@@ -368,6 +368,7 @@ func (err ErrLoginSourceInUse) Error() string {
 //              \/     \/      \/
 
 type ErrTeamAlreadyExist struct {
+	ID    int64
 	OrgID int64
 	Name  string
 }
@@ -378,7 +379,7 @@ func IsErrTeamAlreadyExist(err error) bool {
 }
 
 func (err ErrTeamAlreadyExist) Error() string {
-	return fmt.Sprintf("team already exists [org_id: %d, name: %s]", err.OrgID, err.Name)
+	return fmt.Sprintf("team already exists [id: %d, org_id: %d, name: %s]", err.ID, err.OrgID, err.Name)
 }
 
 //  ____ ___        .__                    .___

internal/db/org_team.go

@@ -241,11 +241,12 @@ func NewTeam(t *Team) error {
 	}
 
 	t.LowerName = strings.ToLower(t.Name)
-	has, err = x.Where("org_id=?", t.OrgID).And("lower_name=?", t.LowerName).Get(new(Team))
+	existingTeam := Team{}
+	has, err = x.Where("org_id=?", t.OrgID).And("lower_name=?", t.LowerName).Get(&existingTeam)
 	if err != nil {
 		return err
 	} else if has {
-		return ErrTeamAlreadyExist{t.OrgID, t.LowerName}
+		return ErrTeamAlreadyExist{existingTeam.ID, t.OrgID, t.LowerName}
 	}
 
 	sess := x.NewSession()
@@ -346,11 +347,12 @@ func UpdateTeam(t *Team, authChanged bool) (err error) {
 	}
 
 	t.LowerName = strings.ToLower(t.Name)
-	has, err := x.Where("org_id=?", t.OrgID).And("lower_name=?", t.LowerName).And("id!=?", t.ID).Get(new(Team))
+	existingTeam := new(Team)
+	has, err := x.Where("org_id=?", t.OrgID).And("lower_name=?", t.LowerName).And("id!=?", t.ID).Get(&existingTeam)
 	if err != nil {
 		return err
 	} else if has {
-		return ErrTeamAlreadyExist{t.OrgID, t.LowerName}
+		return ErrTeamAlreadyExist{existingTeam.ID, t.OrgID, t.LowerName}
 	}
 
 	if _, err = sess.ID(t.ID).AllCols().Update(t); err != nil {