[PLT-5864] Move teammate name display setting to the System Console (#6681)

* move teammate name display setting to the system console

* update all the likes of TeammateNameDisplay names

* fix gofmt error

* rebase and fix conflict

app/diagnostics.go

@@ -209,6 +209,7 @@ func trackConfig() {
 		"max_notifications_per_channel":       *utils.Cfg.TeamSettings.MaxNotificationsPerChannel,
 		"max_users_per_team":                  utils.Cfg.TeamSettings.MaxUsersPerTeam,
 		"max_channels_per_team":               *utils.Cfg.TeamSettings.MaxChannelsPerTeam,
+		"teammate_name_display":               *utils.Cfg.TeamSettings.TeammateNameDisplay,
 		"isdefault_site_name":                 isDefault(utils.Cfg.TeamSettings.SiteName, "Mattermost"),
 		"isdefault_custom_brand_text":         isDefault(*utils.Cfg.TeamSettings.CustomBrandText, model.TEAM_SETTINGS_DEFAULT_CUSTOM_BRAND_TEXT),
 		"isdefault_custom_description_text":   isDefault(*utils.Cfg.TeamSettings.CustomDescriptionText, model.TEAM_SETTINGS_DEFAULT_CUSTOM_DESCRIPTION_TEXT),

app/email_batching.go

@@ -4,7 +4,6 @@
 package app
 
 import (
-	"database/sql"
 	"fmt"
 	"html/template"
 	"strconv"
@@ -163,7 +162,6 @@ func (job *EmailBatchingJob) checkPendingNotifications(now time.Time, handler fu
 
 func sendBatchedEmailNotification(userId string, notifications []*batchedNotification) {
 	uchan := Srv.Store.User().Get(userId)
-	pchan := Srv.Store.Preference().Get(userId, model.PREFERENCE_CATEGORY_DISPLAY_SETTINGS, model.PREFERENCE_NAME_DISPLAY_NAME_FORMAT)
 
 	var user *model.User
 	if result := <-uchan; result.Err != nil {
@@ -174,17 +172,7 @@ func sendBatchedEmailNotification(userId string, notifications []*batchedNotific
 	}
 
 	translateFunc := utils.GetUserTranslations(user.Locale)
-
-	var displayNameFormat string
-	if result := <-pchan; result.Err != nil && result.Err.DetailedError != sql.ErrNoRows.Error() {
-		l4g.Warn("api.email_batching.send_batched_email_notification.preferences.app_error")
-		return
-	} else if result.Err != nil {
-		// no display name format saved, so fall back to default
-		displayNameFormat = model.PREFERENCE_DEFAULT_DISPLAY_NAME_FORMAT
-	} else {
-		displayNameFormat = result.Data.(model.Preference).Value
-	}
+	displayNameFormat := *utils.Cfg.TeamSettings.TeammateNameDisplay
 
 	var contents string
 	for _, notification := range notifications {
@@ -236,7 +224,7 @@ func renderBatchedPost(template *utils.HTMLTemplate, post *model.Post, teamName
 		l4g.Warn(utils.T("api.email_batching.render_batched_post.sender.app_error"))
 		return ""
 	} else {
-		template.Props["SenderName"] = result.Data.(*model.User).GetDisplayNameForPreference(displayNameFormat)
+		template.Props["SenderName"] = result.Data.(*model.User).GetDisplayName(displayNameFormat)
 	}
 
 	if result := <-cchan; result.Err != nil {

app/import_test.go

@@ -1586,7 +1586,6 @@ func TestImportImportUser(t *testing.T) {
 		Theme:              ptrStr(`{"awayIndicator":"#DCBD4E","buttonBg":"#23A2FF","buttonColor":"#FFFFFF","centerChannelBg":"#ffffff","centerChannelColor":"#333333","codeTheme":"github","image":"/static/files/a4a388b38b32678e83823ef1b3e17766.png","linkColor":"#2389d7","mentionBj":"#2389d7","mentionColor":"#ffffff","mentionHighlightBg":"#fff2bb","mentionHighlightLink":"#2f81b7","newMessageSeparator":"#FF8800","onlineIndicator":"#7DBE00","sidebarBg":"#fafafa","sidebarHeaderBg":"#3481B9","sidebarHeaderTextColor":"#ffffff","sidebarText":"#333333","sidebarTextActiveBorder":"#378FD2","sidebarTextActiveColor":"#111111","sidebarTextHoverBg":"#e6f2fa","sidebarUnreadText":"#333333","type":"Mattermost"}`),
 		SelectedFont:       ptrStr("Roboto Slab"),
 		UseMilitaryTime:    ptrStr("true"),
-		NameFormat:         ptrStr("nickname_full_name"),
 		CollapsePreviews:   ptrStr("true"),
 		MessageDisplay:     ptrStr("compact"),
 		ChannelDisplayMode: ptrStr("centered"),
@@ -1625,10 +1624,6 @@ func TestImportImportUser(t *testing.T) {
 				t.Fatalf("Preference does not match.")
 			}
 
-			if preference.Name == "name_format" && preference.Value != *data.NameFormat {
-				t.Fatalf("Preference does not match.")
-			}
-
 			if preference.Name == "collapse_previews" && preference.Value != *data.CollapsePreviews {
 				t.Fatalf("Preference does not match.")
 			}
@@ -1650,7 +1645,6 @@ func TestImportImportUser(t *testing.T) {
 		Theme:              ptrStr(`{"awayIndicator":"#123456","buttonBg":"#23A2FF","buttonColor":"#FFFFFF","centerChannelBg":"#ffffff","centerChannelColor":"#333333","codeTheme":"github","image":"/static/files/a4a388b38b32678e83823ef1b3e17766.png","linkColor":"#2389d7","mentionBj":"#2389d7","mentionColor":"#ffffff","mentionHighlightBg":"#fff2bb","mentionHighlightLink":"#2f81b7","newMessageSeparator":"#FF8800","onlineIndicator":"#7DBE00","sidebarBg":"#fafafa","sidebarHeaderBg":"#3481B9","sidebarHeaderTextColor":"#ffffff","sidebarText":"#333333","sidebarTextActiveBorder":"#378FD2","sidebarTextActiveColor":"#111111","sidebarTextHoverBg":"#e6f2fa","sidebarUnreadText":"#333333","type":"Mattermost"}`),
 		SelectedFont:       ptrStr("Lato"),
 		UseMilitaryTime:    ptrStr("false"),
-		NameFormat:         ptrStr("full_name"),
 		CollapsePreviews:   ptrStr("false"),
 		MessageDisplay:     ptrStr("clean"),
 		ChannelDisplayMode: ptrStr("full"),
@@ -1684,10 +1678,6 @@ func TestImportImportUser(t *testing.T) {
 				t.Fatalf("Preference does not match.")
 			}
 
-			if preference.Name == "name_format" && preference.Value != *data.NameFormat {
-				t.Fatalf("Preference does not match.")
-			}
-
 			if preference.Name == "collapse_previews" && preference.Value != *data.CollapsePreviews {
 				t.Fatalf("Preference does not match.")
 			}

app/team.go

@@ -657,7 +657,8 @@ func InviteNewUsersToTeam(emailList []string, teamId, senderId string) *model.Ap
 		user = result.Data.(*model.User)
 	}
 
-	SendInviteEmails(team, user.GetDisplayName(), emailList, utils.GetSiteURL())
+	nameFormat := *utils.Cfg.TeamSettings.TeammateNameDisplay
+	SendInviteEmails(team, user.GetDisplayName(nameFormat), emailList, utils.GetSiteURL())
 
 	return nil
 }