| 123456789101112131415161718192021222324252627282930313233343536 | package settingsimport "github.com/go-acme/lego/v4/lego"type Cert struct {	Email                string   `json:"email" protected:"true"`	CADir                string   `json:"ca_dir" binding:"omitempty,url"`	RenewalInterval      int      `json:"renewal_interval" binding:"min=7,max=21"`	RecursiveNameservers []string `json:"recursive_nameservers" binding:"omitempty,dive,hostname_port"`	HTTPChallengePort    string   `json:"http_challenge_port"`}var CertSettings = &Cert{	Email:                "",	CADir:                "",	RenewalInterval:      7,	RecursiveNameservers: []string{},	HTTPChallengePort:    "9180",}func (s *Cert) GetCADir() string {	if s.CADir != "" {		return s.CADir	}	return lego.LEDirectoryProduction}func (s *Cert) GetCertRenewalInterval() int {	if s.RenewalInterval < 7 {		return 7	}	if s.RenewalInterval > 21 {		return 21	}	return s.RenewalInterval}
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