Refactor main.go to make easier to read

main.go

@@ -108,61 +108,32 @@ func action(context *cli.Context) error {
 	kind := context.Generic("type").(*typeFlag).value
 	ttl := context.Int("ttl")
 
+	var content string
+	var getContentError error
 	wg.Add(1)
+	go func() {
+		defer wg.Done()
 		ipClient := &ip.Client{
 			URLv4: context.String("get-ipv4-url"),
 			URLv6: context.String("get-ipv6-url"),
 		}
-
-	var getIPError error
-	var content string
-	go func() {
-		defer wg.Done()
-
-		var err error
-		result := context.String("content")
-
-		switch kind {
-		case "A":
-			if result == "" {
-				result, err = ipClient.GetIPv4()
-			}
-		case "AAAA":
-			if result == "" {
-				result, err = ipClient.GetIPv6()
-			}
-		default:
-			if result == "" {
-				err = errors.Errorf("could not get content for type %s", kind)
-				return
-			}
-		}
-
-		if err != nil {
-			getIPError = errors.Wrap(err, "could not get IP address")
-		} else {
-			content = result
-		}
+		content, getContentError = getContent(ipClient, kind, context.String("content"))
 	}()
 
-	client := dns.New(context.String("dnsimple-token"))
+	dnsClient := dns.New(context.String("dnsimple-token"))
+
 	records := []dns.Record{}
 	var getRecordsError error
-
 	wg.Add(1)
 	go func() {
 		defer wg.Done()
-		if results, err := client.GetRecords(host, kind); err != nil {
-			getRecordsError = errors.Wrap(err, "could not get records for host")
-		} else {
-			records = results
-		}
+		records, getRecordsError = dnsClient.GetRecords(host, kind)
 	}()
 
 	wg.Wait()
 
-	if getIPError != nil {
-		return errors.Wrap(getIPError, "could no get ip address")
+	if getContentError != nil {
+		return errors.Wrap(getContentError, "could no get ip address")
 	}
 
 	if getRecordsError != nil {
@@ -175,7 +146,7 @@ func action(context *cli.Context) error {
 	}
 
 	newRecord := dns.Record{Type: kind, Content: content, TTL: ttl}
-	if err := client.CreateRecord(host, newRecord); err != nil {
+	if err := dnsClient.CreateRecord(host, newRecord); err != nil {
 		return errors.Wrap(err, "could not create record")
 	}
 
@@ -187,10 +158,25 @@ func action(context *cli.Context) error {
 		go func(r dns.Record) {
 			defer deleteWG.Done()
 			fmt.Printf("%s record for %s being deleting %s\n", r.Type, host, r.Content)
-			client.DeleteRecord(r)
+			dnsClient.DeleteRecord(r)
 		}(record)
 	}
 	deleteWG.Wait()
 
 	return nil
 }
+
+func getContent(client *ip.Client, kind, content string) (string, error) {
+	if content != "" {
+		return content, nil
+	}
+
+	switch kind {
+	case "A":
+		return client.GetIPv4()
+	case "AAAA":
+		return client.GetIPv6()
+	default:
+		return "", errors.Errorf("could not get content for type %s", kind)
+	}
+}