fix up tests, add docs

internal/cliactions/admin/trans/import.go

@@ -0,0 +1,56 @@
+/*
+   GoToSocial
+   Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package trans
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/sirupsen/logrus"
+	"github.com/superseriousbusiness/gotosocial/internal/cliactions"
+	"github.com/superseriousbusiness/gotosocial/internal/config"
+	"github.com/superseriousbusiness/gotosocial/internal/db/bundb"
+	"github.com/superseriousbusiness/gotosocial/internal/trans"
+)
+
+// Import imports info from a file into the database
+var Import cliactions.GTSAction = func(ctx context.Context, c *config.Config, log *logrus.Logger) error {
+	dbConn, err := bundb.NewBunDBService(ctx, c, log)
+	if err != nil {
+		return fmt.Errorf("error creating dbservice: %s", err)
+	}
+
+	importer := trans.NewImporter(dbConn, log)
+
+	path, ok := c.ExportCLIFlags[config.TransPathFlag]
+	if !ok {
+		return errors.New("no path set")
+	}
+
+	if err := dbConn.CreateAllTables(ctx); err != nil {
+		return err
+	}
+
+	if err := importer.Import(ctx, path); err != nil {
+		return err
+	}
+
+	return dbConn.Stop(ctx)
+}