added command with interactive dialog

server/sqlstore/file.go

@@ -0,0 +1,53 @@
+package sqlstore
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	sq "github.com/Masterminds/squirrel"
+
+	"github.com/mattermost/mattermost/server/public/model"
+)
+
+const (
+	fileInfoTable = "FileInfo"
+)
+
+func (s *SQLStore) DetatchAttachmentFromChannel(fileID string) error {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	defer cancel()
+
+	update := map[string]interface{}{
+		"ChannelId": "",
+		"PostId":    "",
+		"DeleteAt":  model.GetMillis(),
+	}
+
+	query := s.masterBuilder.
+		Update(fileInfoTable).
+		SetMap(update).
+		Where(sq.Eq{"Id": fileID})
+
+	tx, err := s.master.Begin()
+	if err != nil {
+		return fmt.Errorf("error starting transaction: %w", err)
+	}
+
+	q, args, err := query.ToSql()
+	if err != nil {
+		return fmt.Errorf("error creating query: %w", err)
+	}
+
+	_, err = tx.ExecContext(ctx, q, args...)
+	if err != nil {
+		s.logger.Error("error detaching attachment from channel", "fileId", fileID, "err", err)
+		return tx.Rollback()
+	}
+
+	if err := tx.Commit(); err != nil {
+		return fmt.Errorf("error committing transaction: %w", err)
+	}
+
+	return nil
+}