refactor: move Manual DNS provider implementation

providers/dns/manual/manual.go

@@ -1,11 +1,67 @@
 package manual
 
-import "github.com/go-acme/lego/v5/challenge/dns01"
+import (
+	"bufio"
+	"context"
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/go-acme/lego/v5/challenge/dnsnew"
+)
+
+const (
+	dnsTemplate = `%s %d IN TXT %q`
+)
 
 // DNSProvider is an implementation of the ChallengeProvider interface.
-type DNSProvider = dns01.DNSProviderManual
+type DNSProvider struct{}
 
 // NewDNSProvider returns a DNSProvider instance.
 func NewDNSProvider() (*DNSProvider, error) {
 	return &DNSProvider{}, nil
 }
+
+// Present prints instructions for manually creating the TXT record.
+func (*DNSProvider) Present(domain, token, keyAuth string) error {
+	ctx := context.Background()
+	info := dnsnew.GetChallengeInfo(ctx, domain, keyAuth)
+
+	authZone, err := dnsnew.DefaultClient().FindZoneByFqdn(ctx, info.EffectiveFQDN)
+	if err != nil {
+		return fmt.Errorf("manual: could not find zone: %w", err)
+	}
+
+	fmt.Printf("lego: Please create the following TXT record in your %s zone:\n", authZone)
+	fmt.Printf(dnsTemplate+"\n", info.EffectiveFQDN, dnsnew.DefaultTTL, info.Value)
+	fmt.Printf("lego: Press 'Enter' when you are done\n")
+
+	_, err = bufio.NewReader(os.Stdin).ReadBytes('\n')
+	if err != nil {
+		return fmt.Errorf("manual: %w", err)
+	}
+
+	return nil
+}
+
+// CleanUp prints instructions for manually removing the TXT record.
+func (*DNSProvider) CleanUp(domain, token, keyAuth string) error {
+	ctx := context.Background()
+	info := dnsnew.GetChallengeInfo(ctx, domain, keyAuth)
+
+	authZone, err := dnsnew.DefaultClient().FindZoneByFqdn(ctx, info.EffectiveFQDN)
+	if err != nil {
+		return fmt.Errorf("manual: could not find zone: %w", err)
+	}
+
+	fmt.Printf("lego: You can now remove this TXT record from your %s zone:\n", authZone)
+	fmt.Printf(dnsTemplate+"\n", info.EffectiveFQDN, dnsnew.DefaultTTL, "...")
+
+	return nil
+}
+
+// Sequential All DNS challenges for this provider will be resolved sequentially.
+// Returns the interval between each iteration.
+func (d *DNSProvider) Sequential() time.Duration {
+	return dnsnew.DefaultPropagationTimeout
+}