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// 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 (
"regexp"
"time"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
// 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,unique:filters_account_id_title_uniq"` // ID of the local account that created the filter.
Title string `bun:",nullzero,notnull,unique:filters_account_id_title_uniq"` // 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.
}
// Expired returns whether the filter has expired at a given time.
// Filters without an expiration timestamp never expire.
func (f *Filter) Expired(now time.Time) bool {
return !f.ExpiresAt.IsZero() && !f.ExpiresAt.After(now)
}
// 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?
Regexp *regexp.Regexp `bun:"-"` // pre-prepared regular expression
}
// Compile will compile this FilterKeyword as a prepared regular expression.
func (k *FilterKeyword) Compile() (err error) {
var (
wordBreakStart string
wordBreakEnd string
)
if util.PtrOrZero(k.WholeWord) {
// Either word boundary or
// whitespace or start of line.
wordBreakStart = `(?:\b|\s|^)`
// Either word boundary or
// whitespace or end of line.
wordBreakEnd = `(?:\b|\s|$)`
}
// Compile keyword filter regexp.
quoted := regexp.QuoteMeta(k.Keyword)
k.Regexp, err = regexp.Compile(`(?i)` + wordBreakStart + quoted + wordBreakEnd)
return // caller is expected to wrap this error
}
// 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 (
// FilterActionNone filters should not exist, except internally, for partially constructed or invalid filters.
FilterActionNone FilterAction = ""
// 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"
)
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