feat: add --always-notify flag

internal/discord/discord.go

@@ -75,6 +75,11 @@ func init() {
 	}
 }
 
+func (c *Client) PostInfo(webhook *Webhook) error {
+	webhook.Embeds[0].Color = 2201331
+	return c.Post(webhook)
+}
+
 func (c *Client) PostError(webhook *Webhook) error {
 	webhook.Embeds[0].Color = 15092300
 	return c.Post(webhook)

internal/dyndns/dyndns.go

@@ -16,11 +16,12 @@ type DynDNS struct {
 	finderFunc    ipfinder.IpFinderFunc
 	gandiClient   *gandi.Client
 	discordClient *discord.Client
+	alwaysNotify  bool
 }
 
 // New creates a new DynDNS
-func New(ipf ipfinder.IpFinderFunc, g *gandi.Client, d *discord.Client) *DynDNS {
-	return &DynDNS{finderFunc: ipf, gandiClient: g, discordClient: d}
+func New(ipf ipfinder.IpFinderFunc, g *gandi.Client, d *discord.Client, alwaysNotify bool) *DynDNS {
+	return &DynDNS{finderFunc: ipf, gandiClient: g, discordClient: d, alwaysNotify: alwaysNotify}
 }
 
 // Run check the current IPs, and the one defines in the DNS records.
@@ -41,6 +42,18 @@ func (dyndns *DynDNS) Run(domain string, record string, ttl int) error {
 
 	if len(ipsToUpdate) == 0 {
 		log.Println("IP address(es) match - no further action")
+
+		if dyndns.alwaysNotify {
+			err := dyndns.discordClient.PostInfo(&discord.Webhook{
+				Embeds: []discord.Embed{
+					{
+						Title:       fmt.Sprintf("IP address(es) match for record %s.%s - no further action", record, domain),
+						Description: "To disable notifications when nothing happens, remove the `--always-notify` flag",
+					},
+				},
+			})
+			return errors.Wrap(err, "failed to send message to discord")
+		}
 		return nil
 	}
 

main.go

@@ -20,6 +20,7 @@ const usage = `Usage:
 Options:
     --livebox            Query the Livebox (router) to find the IP instead of api.ipify.org
     --ttl                Time to live in seconds. Defaults to 3600
+    --always-notify      Always notify the Discord channel (even when nothing changes)
     -V, --version        Print version
 
 Examples:
@@ -41,11 +42,12 @@ func main() {
 	}
 
 	var (
-		versionFlag bool
-		domainFlag  string
-		recordFlag  string
-		ttlFlag     int = 3600
-		liveboxFlag bool
+		versionFlag      bool
+		domainFlag       string
+		recordFlag       string
+		ttlFlag          int = 3600
+		liveboxFlag      bool
+		alwaysNotifyFlag bool
 	)
 
 	flag.StringVar(&domainFlag, "domain", domainFlag, "")
@@ -57,6 +59,8 @@ func main() {
 	flag.BoolVar(&versionFlag, "version", versionFlag, "print the version")
 	flag.BoolVar(&versionFlag, "V", versionFlag, "print the version")
 
+	flag.BoolVar(&alwaysNotifyFlag, "always-notify", alwaysNotifyFlag, "")
+
 	flag.Parse()
 
 	if versionFlag {
@@ -83,7 +87,7 @@ func main() {
 	}
 
 	gandiClient := gandi.New(mustEnv("GANDI_TOKEN"))
-	dyn := dyndns.New(ipf, gandiClient, discordClient)
+	dyn := dyndns.New(ipf, gandiClient, discordClient, alwaysNotifyFlag)
 
 	err := dyn.Run(domainFlag, recordFlag, ttlFlag)
 	if err != nil {