func (d *DNSProvider) Present(domain, token, keyAuth string) error {
	fqdn, value := dns01.GetRecord(domain, keyAuth)
	record := txtRecord{
		Name:        fqdn[:len(fqdn)-1],
		Destination: value,
	}
	authZone, err := getHostedZone(domain)
	if err != nil {
		return fmt.Errorf("zoneee: %w", err)
	}
	_, err = d.addTxtRecord(authZone, record)
	if err != nil {
		return fmt.Errorf("zoneee: %w", err)
	}
	return nil
}
Present creates a TXT record to fulfill the dns-01 challenge.
package zoneee
import (
	"errors"
	"fmt"
	"net/http"
	"net/url"
	"time"
	"github.com/go-acme/lego/v4/challenge/dns01"
	"github.com/go-acme/lego/v4/platform/config/env"
)
const (
	envNamespace = "ZONEEE_"
	EnvEndpoint = envNamespace + "ENDPOINT"
	EnvAPIUser  = envNamespace + "API_USER"
	EnvAPIKey   = envNamespace + "API_KEY"
	EnvPropagationTimeout = envNamespace + "PROPAGATION_TIMEOUT"
	EnvPollingInterval    = envNamespace + "POLLING_INTERVAL"
	EnvHTTPTimeout        = envNamespace + "HTTP_TIMEOUT"
)
type Config struct {
	Endpoint           *url.URL
	Username           string
	APIKey             string
	PropagationTimeout time.Duration
	PollingInterval    time.Duration
	HTTPClient         *http.Client
}
func NewDefaultConfig() *Config {
	endpoint, _ := url.Parse(defaultEndpoint)
	return &Config{
		Endpoint: endpoint,
		PropagationTimeout: env.GetOrDefaultSecond(EnvPropagationTimeout, 5*time.Minute),
		PollingInterval:    env.GetOrDefaultSecond(EnvPollingInterval, 5*time.Second),
		HTTPClient: &http.Client{
			Timeout: env.GetOrDefaultSecond(EnvHTTPTimeout, 30*time.Second),
		},
	}
}
type DNSProvider struct {
	config *Config
}
func NewDNSProvider() (*DNSProvider, error) {
	values, err := env.Get(EnvAPIUser, EnvAPIKey)
	if err != nil {
		return nil, fmt.Errorf("zoneee: %w", err)
	}
	rawEndpoint := env.GetOrDefaultString(EnvEndpoint, defaultEndpoint)
	endpoint, err := url.Parse(rawEndpoint)
	if err != nil {
		return nil, fmt.Errorf("zoneee: %w", err)
	}
	config := NewDefaultConfig()
	config.Username = values[EnvAPIUser]
	config.APIKey = values[EnvAPIKey]
	config.Endpoint = endpoint
	return NewDNSProviderConfig(config)
}
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
	if config == nil {
		return nil, errors.New("zoneee: the configuration of the DNS provider is nil")
	}
	if config.Username == "" {
		return nil, errors.New("zoneee: credentials missing: username")
	}
	if config.APIKey == "" {
		return nil, errors.New("zoneee: credentials missing: API key")
	}
	if config.Endpoint == nil {
		return nil, errors.New("zoneee: the endpoint is missing")
	}
	return &DNSProvider{config: config}, nil
}
func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
	return d.config.PropagationTimeout, d.config.PollingInterval
}