Making domain_name mandatory

Signed-off-by: Rajesh Rajendran <rjshrjndrn@gmail.com>

scripts/helm/install.sh

@@ -2,6 +2,22 @@
 
 set -o errtrace
 
+# Check for a valid domain_name
+domain_name=`grep domain_name vars.yaml | grep -v "example" | cut -d " " -f2 | cut -d '"' -f2`
+# Ref: https://stackoverflow.com/questions/15268987/bash-based-regex-domain-name-validation
+[[ $(echo $domain_name | grep -P '(?=^.{5,254}$)(^(?:(?!\d+\.)[a-zA-Z0-9_\-]{1,63}\.?)+(?:[a-zA-Z]{2,})$)') ]] || {
+    echo "OpenReplay Needs a valid domain name for captured sessions to replay. For example, openreplay.mycompany.com"
+    echo "Please enter your domain name"
+    read domain_name
+    [[ -z domain_name ]] && {
+        echo "OpenReplay won't work without domain name. Exiting..."
+        exit 1
+    } || {
+        sed -i "s#domain_name.*#domain_name: \"${domain_name}\" #g" vars.yaml
+    }
+}
+
+
 # Installing k3s
 curl -sL https://get.k3s.io | sudo K3S_KUBECONFIG_MODE="644" INSTALL_K3S_VERSION='v1.19.5+k3s2' INSTALL_K3S_EXEC="--no-deploy=traefik" sh -
 mkdir ~/.kube