[feature] Filters v1 (#2594)

* Implement client-side v1 filters

* Exclude linter false positives

* Update test/envparsing.sh

* Fix minor Swagger, style, and Bun usage issues

* Regenerate Swagger

* De-generify filter keywords

* Remove updating filter statuses

This is an operation that the Mastodon v2 filter API doesn't actually have, because filter statuses, unlike keywords, don't have options: the only info they contain is the status ID to be filtered.

* Add a test for filter statuses specifically

* De-generify filter statuses

* Inline FilterEntry

* Use vertical style for Bun operations consistently

* Add comment on Filter DB interface

* Remove GoLand linter control comments

Our existing linters should catch these, or they don't matter very much

* Reduce memory ratio for filters

1 files changed, 97 insertions, 0 deletions

diff --git a/internal/db/bundb/migrations/20240126064004_add_filters.go b/internal/db/bundb/migrations/20240126064004_add_filters.go
new file mode 100644
index 000000000..3ad22f9d8
--- /dev/null
+++ b/internal/db/bundb/migrations/20240126064004_add_filters.go
@@ -0,0 +1,97 @@
+// 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/uptrace/bun"
+)
+
+func init() {
+	up := func(ctx context.Context, db *bun.DB) error {
+		return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
+			// Filter table.
+			if _, err := tx.
+				NewCreateTable().
+				Model(&gtsmodel.Filter{}).
+				IfNotExists().
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			// Filter keyword table.
+			if _, err := tx.
+				NewCreateTable().
+				Model(&gtsmodel.FilterKeyword{}).
+				IfNotExists().
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			// Filter status table.
+			if _, err := tx.
+				NewCreateTable().
+				Model(&gtsmodel.FilterStatus{}).
+				IfNotExists().
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			// Add indexes to the filter tables.
+			for table, indexes := range map[string]map[string][]string{
+				"filters": {
+					"filters_account_id_idx": {"account_id"},
+				},
+				"filter_keywords": {
+					"filter_keywords_account_id_idx": {"account_id"},
+					"filter_keywords_filter_id_idx":  {"filter_id"},
+				},
+				"filter_statuses": {
+					"filter_statuses_account_id_idx": {"account_id"},
+					"filter_statuses_filter_id_idx":  {"filter_id"},
+				},
+			} {
+				for index, columns := range indexes {
+					if _, err := tx.
+						NewCreateIndex().
+						Table(table).
+						Index(index).
+						Column(columns...).
+						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)
+	}
+}