FEAT: Refactor allowing multiple DNS Providers

internal/dns_providers/base_provider.go

@@ -0,0 +1,25 @@
+package dns_providers
+
+import (
+	"strings"
+)
+
+type DNSProvider interface {
+	UpdateRecord(hostname string, ip string, old_ip string) error
+}
+
+type DomainParts struct {
+	Name   string
+	Domain string
+}
+
+func GetDomainParts(hostname string) *DomainParts {
+	data := arrayToSlice(strings.Split(hostname, "."))
+
+	out := DomainParts{Name: data[0], Domain: strings.Join(data[1:], ".")}
+	return &out
+}
+
+func arrayToSlice(array []string) []string {
+	return array[:]
+}