catch enedis redirect error (code 500 . no state)

catches error 500 from enedis instead of stopping at missing parameter (state)

main.go

@@ -322,6 +322,21 @@ func main() {
 			log.Info("WL - EnedisSuccess - Redirect - Redirecting user to  Cozy stack")
 			http.Redirect(w, r, redir, 302)
 		} else {
+			if len(code) > 0 {
+				if findItem(statusCodes, code) {
+					intCode, err := strconv.Atoi(code)
+					if err != nil {
+						logRoute("Proxy_error_enedis_redirect")
+						log.Error("WL - ProxyError - Enedis - Redirect - String to int convert error for status code: ", err)
+						http.Error(w, http.StatusText(500), 500)
+						return
+					}
+					logRoute("Enedis_redirect_error")
+					log.Error("WL - EnedisError - Redirect - status code error: ", code)
+					http.Error(w, http.StatusText(intCode), intCode)
+					return
+				}
+			}
 			logRoute("Proxy_error_enedis_redirect")
 			log.Error("WL - ProxyError - Enedis - Redirect - Missing parameters in request")
 			http.Error(w, http.StatusText(500), 500)
@@ -504,7 +519,7 @@ func main() {
 		clientSecret := ""
 		code := ""
 		grantType := ""
-		scope := ""
+		// scope := ""
 		redirectUri := *cozyProxyURI + "/redirect-grdf"
 		pce := ""
 		IdToken := ""