[chore] re-add `statuses_account_id_id_idx` if removed (#2699)

* [chore] re-add `statuses_account_id_id_idx` if removed

* if not exists

internal/db/bundb/migrations/20240220204526_add_statuses_mentions_is_null_or_empty_idx.go

@@ -39,17 +39,7 @@ func init() {
 		}
 
 		return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
-			log.Info(ctx, "reindexing statuses_account_id_id_idx -> statuses_account_view_idx; this may take a few minutes, please don't interrupt this migration!")
-
-			// Remove previous index for viewing
-			// statuses created by account.
-			if _, err := tx.
-				NewDropIndex().
-				Index("statuses_account_id_id_idx").
-				IfExists().
-				Exec(ctx); err != nil {
-				return err
-			}
+			log.Info(ctx, "reindexing statuses (statuses_account_view_idx); this may take a few minutes, please don't interrupt this migration!")
 
 			// Add new index for viewing statuses created
 			// by account, which includes mentions in the index.

internal/db/bundb/migrations/20240228113608_readd_statuses_account_id_id_idx.go

@@ -0,0 +1,58 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 migrations
+
+import (
+	"context"
+
+	gtsmodel "github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/log"
+	"github.com/uptrace/bun"
+)
+
+func init() {
+	up := func(ctx context.Context, db *bun.DB) error {
+		log.Info(ctx, "reindexing statuses (statuses_account_id_id_idx); this may take a few minutes, please don't interrupt this migration!")
+
+		// Re-add index removed in a different
+		// version of previous migration.
+		if _, err := db.
+			NewCreateIndex().
+			Model(&gtsmodel.Status{}).
+			Index("statuses_account_id_id_idx").
+			Column("account_id").
+			ColumnExpr("id DESC").
+			IfNotExists().
+			Exec(ctx); err != nil {
+			return err
+		}
+
+		return nil
+
+	}
+
+	down := func(ctx context.Context, db *bun.DB) error {
+		return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
+			return nil
+		})
+	}
+
+	if err := Migrations.Register(up, down); err != nil {
+		panic(err)
+	}
+}