feat: restructure for better reuse

plugins/tools/lang/language.go

@@ -0,0 +1,41 @@
+package lang
+
+import (
+	"github.com/danielmiessler/fabric/common"
+	"golang.org/x/text/language"
+)
+
+func NewLanguage() (ret *Language) {
+
+	label := "Language"
+	ret = &Language{}
+
+	ret.Configurable = &common.Configurable{
+		Label:           label,
+		EnvNamePrefix:   common.BuildEnvVariablePrefix(label),
+		ConfigureCustom: ret.configure,
+	}
+
+	ret.DefaultLanguage = ret.Configurable.AddSetupQuestionCustom("Output", false,
+		"Enter your default want output lang (for example: zh_CN)")
+
+	return
+}
+
+type Language struct {
+	*common.Configurable
+	DefaultLanguage *common.SetupQuestion
+}
+
+func (o *Language) configure() error {
+	if o.DefaultLanguage.Value != "" {
+		langTag, err := language.Parse(o.DefaultLanguage.Value)
+		if err == nil {
+			o.DefaultLanguage.Value = langTag.String()
+		} else {
+			o.DefaultLanguage.Value = ""
+		}
+	}
+
+	return nil
+}