feat: add notification provider

pkg/config/config.go

@@ -12,10 +12,11 @@ type DomainConfig struct {
 }
 
 type Config struct {
-	ExternalIPProvider ExternalIpProviderConfig `yaml:"ip_provider"`
-	DNSProvider        DNSProviderConfig        `yaml:"dns_provider"`
-	Domains            []DomainConfig           `yaml:"domains"`
-	CheckInterval      string                   `yaml:"check_interval"`
+	ExternalIPProvider   ExternalIpProviderConfig   `yaml:"ip_provider"`
+	DNSProvider          DNSProviderConfig          `yaml:"dns_provider"`
+	NotificationProvider NotificationProviderConfig `yaml:"notification_provider,omitempty"`
+	Domains              []DomainConfig             `yaml:"domains"`
+	CheckInterval        string                     `yaml:"check_interval"`
 }
 
 type ExternalIpProviderConfig struct {
@@ -28,6 +29,11 @@ type DNSProviderConfig struct {
 	ProviderConfig yaml.Node `yaml:"config"`
 }
 
+type NotificationProviderConfig struct {
+	Type           string    `yaml:"type"`
+	ProviderConfig yaml.Node `yaml:"config"`
+}
+
 func (c *Config) Load(filePath string) error {
 	err := yaml.Unmarshal([]byte(filePath), c)
 	if err != nil {