Add cert store option based on sqlite3, mysql & postgres (#173)

Deprecate **pogreb**!

close #169

Reviewed-on: https://codeberg.org/Codeberg/pages-server/pulls/173

cmd/setup.go

@@ -0,0 +1,45 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/rs/zerolog/log"
+	"github.com/urfave/cli/v2"
+
+	"codeberg.org/codeberg/pages/server/database"
+)
+
+func openCertDB(ctx *cli.Context) (certDB database.CertDB, closeFn func(), err error) {
+	if ctx.String("db-type") != "" {
+		log.Trace().Msg("use xorm mode")
+		certDB, err = database.NewXormDB(ctx.String("db-type"), ctx.String("db-conn"))
+		if err != nil {
+			return nil, nil, fmt.Errorf("could not connect to database: %w", err)
+		}
+	} else {
+		// TODO: remove in next version
+		fmt.Println(`
+######################
+## W A R N I N G !!! #
+######################
+
+You use "pogreb" witch is deprecated and will be removed in the next version.
+Please switch to sqlite, mysql or postgres !!!
+
+The simplest way is, to use './pages certs migrate' and set environment var DB_TYPE to 'sqlite' on next start.`)
+		log.Error().Msg("depricated \"pogreb\" used\n")
+
+		certDB, err = database.NewPogreb(ctx.String("db-pogreb"))
+		if err != nil {
+			return nil, nil, fmt.Errorf("could not create database: %w", err)
+		}
+	}
+
+	closeFn = func() {
+		if err := certDB.Close(); err != nil {
+			log.Error().Err(err)
+		}
+	}
+
+	return certDB, closeFn, nil
+}