[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, 71 insertions, 0 deletions

diff --git a/internal/gtsmodel/filter.go b/internal/gtsmodel/filter.go
new file mode 100644
index 000000000..db0a15dfd
--- /dev/null
+++ b/internal/gtsmodel/filter.go
@@ -0,0 +1,71 @@
+// 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 gtsmodel
+
+import "time"
+
+// Filter stores a filter created by a local account.
+type Filter struct {
+	ID                   string           `bun:"type:CHAR(26),pk,nullzero,notnull,unique"`                    // id of this item in the database
+	CreatedAt            time.Time        `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"` // when was item created
+	UpdatedAt            time.Time        `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"` // when was item last updated
+	ExpiresAt            time.Time        `bun:"type:timestamptz,nullzero"`                                   // Time filter should expire. If null, should not expire.
+	AccountID            string           `bun:"type:CHAR(26),notnull,nullzero"`                              // ID of the local account that created the filter.
+	Title                string           `bun:",nullzero,notnull,unique"`                                    // The name of the filter.
+	Action               FilterAction     `bun:",nullzero,notnull"`                                           // The action to take.
+	Keywords             []*FilterKeyword `bun:"-"`                                                           // Keywords for this filter.
+	Statuses             []*FilterStatus  `bun:"-"`                                                           // Statuses for this filter.
+	ContextHome          *bool            `bun:",nullzero,notnull,default:false"`                             // Apply filter to home timeline and lists.
+	ContextNotifications *bool            `bun:",nullzero,notnull,default:false"`                             // Apply filter to notifications.
+	ContextPublic        *bool            `bun:",nullzero,notnull,default:false"`                             // Apply filter to home timeline and lists.
+	ContextThread        *bool            `bun:",nullzero,notnull,default:false"`                             // Apply filter when viewing a status's associated thread.
+	ContextAccount       *bool            `bun:",nullzero,notnull,default:false"`                             // Apply filter when viewing an account profile.
+}
+
+// FilterKeyword stores a single keyword to filter statuses against.
+type FilterKeyword struct {
+	ID        string    `bun:"type:CHAR(26),pk,nullzero,notnull,unique"`                                     // id of this item in the database
+	CreatedAt time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"`                  // when was item created
+	UpdatedAt time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"`                  // when was item last updated
+	AccountID string    `bun:"type:CHAR(26),notnull,nullzero"`                                               // ID of the local account that created the filter keyword.
+	FilterID  string    `bun:"type:CHAR(26),notnull,nullzero,unique:filter_keywords_filter_id_keyword_uniq"` // ID of the filter that this keyword belongs to.
+	Filter    *Filter   `bun:"-"`                                                                            // Filter corresponding to FilterID
+	Keyword   string    `bun:",nullzero,notnull,unique:filter_keywords_filter_id_keyword_uniq"`              // The keyword or phrase to filter against.
+	WholeWord *bool     `bun:",nullzero,notnull,default:false"`                                              // Should the filter consider word boundaries?
+}
+
+// FilterStatus stores a single status to filter.
+type FilterStatus struct {
+	ID        string    `bun:"type:CHAR(26),pk,nullzero,notnull,unique"`                                       // id of this item in the database
+	CreatedAt time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"`                    // when was item created
+	UpdatedAt time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"`                    // when was item last updated
+	AccountID string    `bun:"type:CHAR(26),notnull,nullzero"`                                                 // ID of the local account that created the filter keyword.
+	FilterID  string    `bun:"type:CHAR(26),notnull,nullzero,unique:filter_statuses_filter_id_status_id_uniq"` // ID of the filter that this keyword belongs to.
+	Filter    *Filter   `bun:"-"`                                                                              // Filter corresponding to FilterID
+	StatusID  string    `bun:"type:CHAR(26),notnull,nullzero,unique:filter_statuses_filter_id_status_id_uniq"` // ID of the status to filter.
+}
+
+// FilterAction represents the action to take on a filtered status.
+type FilterAction string
+
+const (
+	// FilterActionWarn means that the status should be shown behind a warning.
+	FilterActionWarn FilterAction = "warn"
+	// FilterActionHide means that the status should be removed from timeline results entirely.
+	FilterActionHide FilterAction = "hide"
+)