refactor: Move option init into struct declaration

Signed-off-by: AlexNg <contact@ngjx.org>

cmd/options/global.go

@@ -1,10 +1,31 @@
 package options
 
 import (
+	"fmt"
+
 	"github.com/caffeine-addictt/template/cmd/utils"
 	"github.com/caffeine-addictt/template/cmd/utils/types"
 )
 
+// The global options for the CLI
+var GlobalOpts = GlobalOptions{
+	Debug:   false,
+	Verbose: false,
+	Repo:    *types.NewValueGuardNoParsing("", "<repo>"),
+	CacheDir: *types.NewValueGuard("", func(v string) (string, error) {
+		ok, err := utils.IsDir(v)
+		if err != nil {
+			return "", err
+		}
+
+		if !ok {
+			return "", fmt.Errorf("'%s' is not a valid directory", v)
+		}
+
+		return v, nil
+	}, "<path>"),
+}
+
 type GlobalOptions struct {
 	// The repository Url to use
 	// Should be this repository by default