feat: check update

service/update.go

@@ -0,0 +1,28 @@
+package service
+
+import (
+	"io"
+	"net/http"
+)
+
+type UpdateService struct {
+	Url string
+}
+
+func NewUpdateService(url string) *UpdateService {
+	return &UpdateService{Url: url}
+}
+
+func (updater *UpdateService) GetLatestVersion() *string {
+	res, err := http.Get(updater.Url)
+	if err != nil {
+		return nil
+	}
+	defer res.Body.Close()
+	body, err := io.ReadAll(res.Body)
+	if err != nil {
+		return nil
+	}
+	str := string(body)
+	return &str
+}