Improve code redability 2

auth/authEmail.js

@@ -152,15 +152,11 @@ const logout = async function (req, res) {
 }
 
 // Util function for generating new random password for users.
-// TODO: Probably we can do someting better here.
-function generatePassword() {
-    var length = 8,
-        charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789",
-        retVal = "";
-    for (var i = 0, n = charset.length; i < length; ++i) {
-        retVal += charset.charAt(Math.floor(Math.random() * n));
-    }
-    return retVal;
+function generatePassword(length = 12) {
+    const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()-_=+";
+    return Array.from(crypto.randomFillSync(new Uint8Array(length)))
+        .map((x) => charset[x % charset.length])
+        .join("");
 }
 
 const resetPassword = async function (req, res) {