From 3bb03bad871f6f4e35b9dab76b9bb4a141f2cc5f Mon Sep 17 00:00:00 2001
From: oscar <oscarzhou0727@icloud.com>
Date: Sat, 17 Sep 2022 21:00:56 +1200
Subject: [PATCH] go(utils): add helper function to get config file handler

---
 go/utils/config.go | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 go/utils/config.go

diff --git a/go/utils/config.go b/go/utils/config.go
new file mode 100644
index 0000000..54db0c9
--- /dev/null
+++ b/go/utils/config.go
@@ -0,0 +1,24 @@
+package utils
+
+import (
+	"errors"
+	"fmt"
+	"os"
+)
+
+func GetConfigFile(name string) (*os.File, error) {
+	_, err := os.Stat(name)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			//create file
+			file, err := os.Create(name)
+			if err != nil {
+				return nil, fmt.Errorf("fail to create config file: %w", err)
+			}
+			return file, err
+		} else {
+			return nil, err
+		}
+	}
+	return os.OpenFile(name, os.O_RDWR, 0644)
+}