From bf71cf062ca7c8afa8fd3c6264d5f6d379aa3649 Mon Sep 17 00:00:00 2001
From: MillenniumEarl <MillenniumEarl@users.noreply.github.com>
Date: Tue, 15 Dec 2020 09:47:40 +0100
Subject: [PATCH] Reduce cyclomatic complexity

---
 app/scripts/network-helper.js | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/app/scripts/network-helper.js b/app/scripts/network-helper.js
index 6d17630..35032b3 100644
--- a/app/scripts/network-helper.js
+++ b/app/scripts/network-helper.js
@@ -242,6 +242,24 @@ module.exports.isStringAValidURL = function (url) {
     else return false;
 };
 
+/**
+ * @private
+ * Check with Axios if a URL exists.
+ * @param {String} url 
+ */
+async function _axiosUrlExists(url) {
+    // Local variables
+    let valid = false;
+    try {
+        const response = await axios.head(url);
+        valid = response && !/4\d\d/.test(response.status);
+    } catch (error) {
+        if (error.code === "ENOTFOUND") valid = false;
+        else throw error;
+    }
+    return valid;
+}
+
 /**
  * @protected
  * Check if a particular URL is valid and reachable on the web.
@@ -256,8 +274,7 @@ module.exports.urlExists = async function (url, checkRedirect = false) {
     let valid = false;
 
     if (exports.isStringAValidURL(url)) {
-        const response = await axios.head(url);
-        valid = response && !/4\d\d/.test(response.status);
+        valid = await _axiosUrlExists(url);
 
         if (valid && checkRedirect) {
             const redirectUrl = await exports.getUrlRedirect(url);