merge dev.rievo.net/sst/domainCheck into discordBots

cmd/domaincheckbot/dns/domain.go

@@ -0,0 +1,35 @@
+package dns
+
+import (
+	"grow.rievo.dev/discordBots/cmd/domaincheckbot/repository"
+	"net"
+	"sort"
+)
+
+func CheckDomain(domain string) repository.Domain {
+	nameservers, err := net.LookupNS(domain)
+
+	if len(nameservers) > 0 && err == nil {
+		return repository.Domain{
+			Name: domain,
+			NS:   nsToArray(nameservers),
+		}
+	}
+	return repository.Domain{
+		Name: domain,
+		NS:   []string{},
+	}
+}
+
+func nsToArray(nameservers []*net.NS) []string {
+	var nsArray []string
+	for _, nameserver := range nameservers {
+		nsArray = append(nsArray, nameserver.Host)
+	}
+
+	sort.SliceStable(nsArray, func(i, j int) bool {
+		return nsArray[i] < nsArray[j]
+	})
+
+	return nsArray
+}