i18n: Make user-facing strings in the updater translatable

Convert a number of static (english) user-facing string in the updater code to
translatable ones.

pkg/gui/updates.go

@@ -1,16 +1,21 @@
 package gui
 
 import (
-	"fmt"
-
 	"github.com/jesseduffield/gocui"
 	"github.com/jesseduffield/lazygit/pkg/gui/types"
+	"github.com/jesseduffield/lazygit/pkg/utils"
 )
 
 func (gui *Gui) showUpdatePrompt(newVersion string) error {
+	message := utils.ResolvePlaceholderString(
+		gui.Tr.UpdateAvailable, map[string]string{
+			"newVersion": newVersion,
+		},
+	)
+
 	return gui.c.Ask(types.AskOpts{
-		Title:  "New version available!",
+		Title:  gui.Tr.UpdateAvailableTitle,
-		Prompt: fmt.Sprintf("Download version %s? (enter/esc)", newVersion),
+		Prompt: message,
 		HandleConfirm: func() error {
 			gui.startUpdating(newVersion)
 			return nil
@@ -23,7 +28,7 @@ func (gui *Gui) onUserUpdateCheckFinish(newVersion string, err error) error {
 		return gui.c.Error(err)
 	}
 	if newVersion == "" {
-		return gui.c.ErrorMsg("New version not found")
+		return gui.c.ErrorMsg(gui.Tr.FailedToRetrieveLatestVersionErr)
 	}
 	return gui.showUpdatePrompt(newVersion)
 }
@@ -46,7 +51,7 @@ func (gui *Gui) onBackgroundUpdateCheckFinish(newVersion string, err error) erro
 
 func (gui *Gui) startUpdating(newVersion string) {
 	gui.State.Updating = true
-	statusId := gui.statusManager.addWaitingStatus("updating")
+	statusId := gui.statusManager.addWaitingStatus(gui.Tr.UpdateInProgressWaitingStatus)
 	gui.Updater.Update(newVersion, func(err error) error { return gui.onUpdateFinish(statusId, err) })
 }
 
@@ -56,7 +61,12 @@ func (gui *Gui) onUpdateFinish(statusId int, err error) error {
 	gui.OnUIThread(func() error {
 		_ = gui.renderString(gui.Views.AppStatus, "")
 		if err != nil {
-			return gui.c.ErrorMsg("Update failed: " + err.Error())
+			errMessage := utils.ResolvePlaceholderString(
+				gui.Tr.UpdateFailedErr, map[string]string{
+					"errMessage": err.Error(),
+				},
+			)
+			return gui.c.ErrorMsg(errMessage)
 		}
 		return nil
 	})
@@ -66,8 +76,8 @@ func (gui *Gui) onUpdateFinish(statusId int, err error) error {
 
 func (gui *Gui) createUpdateQuitConfirmation() error {
 	return gui.c.Ask(types.AskOpts{
-		Title:  "Currently Updating",
+		Title:  gui.Tr.ConfirmQuitDuringUpdateTitle,
-		Prompt: "An update is in progress. Are you sure you want to quit?",
+		Prompt: gui.Tr.ConfirmQuitDuringUpdate,
 		HandleConfirm: func() error {
 			return gocui.ErrQuit
 		},

pkg/i18n/english.go

@@ -129,9 +129,16 @@ type TranslationSet struct {
 	UpdatesRejectedAndForcePushDisabled string
 	LcCheckForUpdate                    string
 	CheckingForUpdates                  string
+	UpdateAvailableTitle                string
+	UpdateAvailable                     string
+	UpdateInProgressWaitingStatus       string
+	FailedToRetrieveLatestVersionErr    string
 	OnLatestVersionErr                  string
 	MajorVersionErr                     string
 	CouldNotFindBinaryErr               string
+	UpdateFailedErr                     string
+	ConfirmQuitDuringUpdateTitle        string
+	ConfirmQuitDuringUpdate             string
 	MergeToolTitle                      string
 	MergeToolPrompt                     string
 	IntroPopupMessage                   string
@@ -719,9 +726,16 @@ func EnglishTranslationSet() TranslationSet {
 		UpdatesRejectedAndForcePushDisabled: "Updates were rejected and you have disabled force pushing",
 		LcCheckForUpdate:                    "check for update",
 		CheckingForUpdates:                  "Checking for updates...",
+		UpdateAvailableTitle:                "Update available!",
+		UpdateAvailable:                     "Download and install version {{.newVersion}}?",
+		UpdateInProgressWaitingStatus:       "updating",
+		FailedToRetrieveLatestVersionErr:    "Failed to retrieve version information",
 		OnLatestVersionErr:                  "You already have the latest version",
 		MajorVersionErr:                     "New version ({{.newVersion}}) has non-backwards compatible changes compared to the current version ({{.currentVersion}})",
 		CouldNotFindBinaryErr:               "Could not find any binary at {{.url}}",
+		UpdateFailedErr:                     "Update failed: {{.errMessage}}",
+		ConfirmQuitDuringUpdateTitle:        "Currently Updating",
+		ConfirmQuitDuringUpdate:             "An update is in progress. Are you sure you want to quit?",
 		MergeToolTitle:                      "Merge tool",
 		MergeToolPrompt:                     "Are you sure you want to open `git mergetool`?",
 		IntroPopupMessage:                   englishIntroPopupMessage,