move acmeClient creation into own file & struct

cmd/setup.go

@@ -1,14 +1,19 @@
 package cmd
 
 import (
+	"errors"
 	"fmt"
 
 	"github.com/rs/zerolog/log"
 	"github.com/urfave/cli/v2"
 
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/certificates"
 	"codeberg.org/codeberg/pages/server/database"
 )
 
+var ErrAcmeMissConfig = errors.New("ACME client has wrong config")
+
 func openCertDB(ctx *cli.Context) (certDB database.CertDB, closeFn func(), err error) {
 	if ctx.String("db-type") != "" {
 		log.Trace().Msg("use xorm mode")
@@ -43,3 +48,30 @@ The simplest way is, to use './pages certs migrate' and set environment var DB_T
 
 	return certDB, closeFn, nil
 }
+
+func createAcmeClient(ctx *cli.Context, enableHTTPServer bool, challengeCache cache.SetGetKey) (*certificates.AcmeClient, error) {
+	acmeAPI := ctx.String("acme-api-endpoint")
+	acmeMail := ctx.String("acme-email")
+	acmeEabHmac := ctx.String("acme-eab-hmac")
+	acmeEabKID := ctx.String("acme-eab-kid")
+	acmeAcceptTerms := ctx.Bool("acme-accept-terms")
+	dnsProvider := ctx.String("dns-provider")
+	acmeUseRateLimits := ctx.Bool("acme-use-rate-limits")
+
+	// check config
+	if (!acmeAcceptTerms || dnsProvider == "") && acmeAPI != "https://acme.mock.directory" {
+		return nil, fmt.Errorf("%w: you must set $ACME_ACCEPT_TERMS and $DNS_PROVIDER, unless $ACME_API is set to https://acme.mock.directory", ErrAcmeMissConfig)
+	}
+
+	return certificates.NewAcmeClient(
+		acmeAPI,
+		acmeMail,
+		acmeEabHmac,
+		acmeEabKID,
+		dnsProvider,
+		acmeAcceptTerms,
+		enableHTTPServer,
+		acmeUseRateLimits,
+		challengeCache,
+	)
+}