dns

type AliasConfig struct {
	Target  string
	QueryID uint64
}

type Config struct {
	DNSPort     uint16
	DKIMPort    uint16
	Zones       map[string]ZoneConfig
	ForwardTo   []net.IP
	ForwardFor  []net.IPNet
	EnableACME  bool
	EnableDKIM  bool
	WaveServers []string
}

type Configurator func(c *Config)

type ZoneConfig struct {
	// Domain is the domain name configured by zone
	Domain string

	// SerialNumber is incremented whenever zone is changed
	SerialNumber uint32

	// MainNameserver is the address of the main DNS server
	MainNameserver string

	// Email is the mailer address of zone manager
	Email string

	// Nameservers is the list of nameservers for the zone
	Nameservers []string

	// Domains map domains to IP addresses
	Domains map[string][]net.IP

	// Aliases map one domain to another
	Aliases map[string]AliasConfig

	// MailExchanges specifies mail servers.
	MailExchanges map[string]uint16

	// Texts stores values of TXT records.
	Texts map[string][]string
}

type ZoneConfigurator func(c *ZoneConfig)