add Gh version check

pkg/app/app.go

@@ -142,9 +142,26 @@ func NewApp(config config.AppConfigurer, filterPath string) (*App, error) {
 	if err != nil {
 		return app, err
 	}
+
 	return app, nil
 }
 
+func (app *App) validateGhVersion() error {
+	output, err := app.OSCommand.RunCommandWithOutput("gh --version")
+	// if we get an error anywhere here we'll show the same status
+	minVersionError := errors.New(app.Tr.MinGhVersionError)
+	if err != nil {
+		return minVersionError
+	}
+
+	if isGhVersionValid(output) {
+		return nil
+	}
+
+	return minVersionError
+
+}
+
 func (app *App) validateGitVersion() error {
 	output, err := app.OSCommand.RunCommandWithOutput("git --version")
 	// if we get an error anywhere here we'll show the same status
@@ -181,6 +198,29 @@ func isGitVersionValid(versionStr string) bool {
 	return true
 }
 
+func isGhVersionValid(versionStr string) bool {
+	// output should be something like:
+	// gh version 2.0.0 (2021-08-23)
+	// https://github.com/cli/cli/releases/tag/v2.0.0
+	re := regexp.MustCompile(`[^\d]+([\d\.]+)`)
+	matches := re.FindStringSubmatch(versionStr)
+
+	if len(matches) == 0 {
+		return false
+	}
+
+	ghVersion := matches[1]
+	majorVersion, err := strconv.Atoi(ghVersion[0:1])
+	if err != nil {
+		return false
+	}
+	if majorVersion < 2 {
+		return false
+	}
+
+	return true
+}
+
 func (app *App) setupRepo() (bool, error) {
 	if err := app.validateGitVersion(); err != nil {
 		return false, err
@@ -236,6 +276,10 @@ func (app *App) setupRepo() (bool, error) {
 		}
 	}
 
+	if err := app.validateGhVersion(); err != nil {
+		return false, err
+	}
+
 	return false, nil
 }
 

pkg/app/app_test.go

@@ -42,3 +42,34 @@ func TestIsGitVersionValid(t *testing.T) {
 		})
 	}
 }
+
+func TestIsValidGhVersion(t *testing.T) {
+	type scenario struct {
+		versionStr     string
+		expectedResult bool
+	}
+
+	scenarios := []scenario{
+		{
+			"",
+			false,
+		},
+		{
+			`gh version 1.0.0 (2020-08-23)
+			https://github.com/cli/cli/releases/tag/v1.0.0`,
+			false,
+		},
+		{
+			`gh version 2.0.0 (2021-08-23)
+			https://github.com/cli/cli/releases/tag/v2.0.0`,
+			true,
+		},
+	}
+
+	for _, s := range scenarios {
+		t.Run(s.versionStr, func(t *testing.T) {
+			result := isGhVersionValid(s.versionStr)
+			assert.Equal(t, result, s.expectedResult)
+		})
+	}
+}

pkg/i18n/chinese.go

@@ -388,6 +388,7 @@ func chineseTranslationSet() TranslationSet {
 		LcBuildingPatch:                     "正在构建补丁",
 		LcViewCommits:                       "查看提交",
 		MinGitVersionError:                  "Git 版本必须至少为 2.0（即从 2014 年开始）。请升级您的 git 版本。或者在 https://github.com/jesseduffield/lazygit/issues 上提出一个问题，以使 lazygit 更加向后兼容。",
+		MinGhVersionError:                   "GH版本必须至少是2.0 请升级您的gh版本。或者在https://github.com/jesseduffield/lazygit/issues 提出一个问题，以使lazygit更加向后兼容。",
 		LcRunningCustomCommandStatus:        "正在运行自定义命令",
 		LcSubmoduleStashAndReset:            "存放未提交的子模块更改和更新",
 		LcAndResetSubmodules:                "和重置子模块",

pkg/i18n/english.go

@@ -373,6 +373,7 @@ type TranslationSet struct {
 	LcBuildingPatch                     string
 	LcViewCommits                       string
 	MinGitVersionError                  string
+	MinGhVersionError                   string
 	LcRunningCustomCommandStatus        string
 	LcSubmoduleStashAndReset            string
 	LcAndResetSubmodules                string
@@ -906,6 +907,7 @@ func englishTranslationSet() TranslationSet {
 		LcBuildingPatch:                     "building patch",
 		LcViewCommits:                       "view commits",
 		MinGitVersionError:                  "Git version must be at least 2.0 (i.e. from 2014 onwards). Please upgrade your git version. Alternatively raise an issue at https://github.com/jesseduffield/lazygit/issues for lazygit to be more backwards compatible.",
+		MinGhVersionError:                   "GH version must be at least 2.0. Please upgrade your gh version. Alternatively raise an issue at https://github.com/jesseduffield/lazygit/issues for lazygit to be more backwards compatible.",
 		LcRunningCustomCommandStatus:        "running custom command",
 		LcSubmoduleStashAndReset:            "stash uncommitted submodule changes and update",
 		LcAndResetSubmodules:                "and reset submodules",