FEAT: Refactor allowing multiple DNS Providers

internal/config.go

@@ -9,12 +9,14 @@ import (
 )
 
 const (
-	defaultCheckInterval = 5 * 60
-
-	envKeyDnsToCheck           = "CLOUDFLARE_DNS_TO_CHECK"
+	defaultCheckInterval       = 5 * 60
+	envKeyDnsToCheck           = "DNS_NAMES"
 	envKeyPublicIpResolverTag  = "PUBLIC_IP_RESOLVER"
 	envKeyCloudflareApiKey     = "CLOUDFLARE_API_KEY"
 	envKeyCloudflareZone       = "CLOUDFLARE_ZONE"
+	envKeyDirectadminUser      = "DA_USER"
+	envKeyDirectadminKey       = "DA_LOGIN_KEY"
+	envKeyDirectadminUrl       = "DA_LOGIN_URL"
 	envKeyOnChangeComment      = "ON_CHANGE_COMMENT"
 	envKeyCheckIntervalSeconds = "CHECK_INTERVAL_SECONDS"
 	envKeyNotifiers            = "NOTIFIERS"
@@ -23,6 +25,10 @@ const (
 type Config struct {
 	DnsRecordsToCheck   []string
 	PublicIpResolverTag string
+	DNSProviderTag      string
+	DirectadminUsername string
+	DirectadminKey      string
+	DirectadminUrl      string
 	ApiToken            string
 	WebhookToken        string
 	CloudflareZone      string
@@ -32,12 +38,28 @@ type Config struct {
 }
 
 func (c Config) Validate() error {
-	if c.ApiToken == "" {
-		return fmt.Errorf("empty api token env key %s", envKeyCloudflareApiKey)
-	}
+	switch c.DNSProviderTag {
+	case "cloudflare":
+		if c.ApiToken == "" {
+			return fmt.Errorf("empty api token env key %s", envKeyCloudflareApiKey)
+		}
 
-	if c.CloudflareZone == "" {
-		return fmt.Errorf("empty zone in env key %s", envKeyCloudflareZone)
+		// if c.CloudflareZone == "" {
+		// 	return fmt.Errorf("empty zone in env key %s", envKeyCloudflareZone)
+		// }
+
+	case "directadmin":
+		if c.DirectadminUrl == "" {
+			return fmt.Errorf("empty DirectAdmin URL env key %s", envKeyDirectadminUrl)
+		}
+
+		if c.DirectadminUsername == "" {
+			return fmt.Errorf("empty Username in env key %s", envKeyDirectadminUser)
+		}
+
+		if c.DirectadminKey == "" {
+			return fmt.Errorf("empty Login Key in env key %s", envKeyDirectadminKey)
+		}
 	}
 
 	if len(c.DnsRecordsToCheck) == 0 {
@@ -58,6 +80,9 @@ func NewConfig() Config {
 		DnsRecordsToCheck:   parseCommaDelimited(os.Getenv(envKeyDnsToCheck)),
 		PublicIpResolverTag: os.Getenv(envKeyPublicIpResolverTag),
 		ApiToken:            os.Getenv(envKeyCloudflareApiKey),
+		DirectadminUsername: os.Getenv(envKeyDirectadminUser),
+		DirectadminKey:      os.Getenv(envKeyDirectadminKey),
+		DirectadminUrl:      os.Getenv(envKeyDirectadminUrl),
 		CloudflareZone:      os.Getenv(envKeyCloudflareZone),
 		OnChangeComment:     os.Getenv(envKeyOnChangeComment),
 		Notifiers:           parseCommaDelimited(os.Getenv(envKeyNotifiers)),