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disappearingmessage.go
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disappearingmessage.go
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// mautrix-signal - A Matrix-signal puppeting bridge.
// Copyright (C) 2023 Scott Weber, Tulir Asokan
//
// 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 <https://www.gnu.org/licenses/>.
package database
import (
"context"
"database/sql"
"time"
"go.mau.fi/util/dbutil"
"maunium.net/go/mautrix/id"
)
const (
getUnscheduledDisappearingMessagesForRoomQuery = `
SELECT room_id, mxid, expiration_seconds, expiration_ts
FROM disappearing_message WHERE expiration_ts IS NULL AND room_id = $1
`
getExpiredDisappearingMessagesQuery = `
SELECT room_id, mxid, expiration_seconds, expiration_ts
FROM disappearing_message WHERE expiration_ts IS NOT NULL AND expiration_ts <= $1
`
getNextDisappearingMessageQuery = `
SELECT room_id, mxid, expiration_seconds, expiration_ts
FROM disappearing_message WHERE expiration_ts IS NOT NULL ORDER BY expiration_ts ASC LIMIT 1
`
insertDisappearingMessageQuery = `
INSERT INTO disappearing_message (room_id, mxid, expiration_seconds, expiration_ts) VALUES ($1, $2, $3, $4)
`
updateDisappearingMessageQuery = `
UPDATE disappearing_message SET expiration_ts=$2 WHERE mxid=$1
`
deleteDisappearingMessageQuery = `
DELETE FROM disappearing_message WHERE mxid=$1
`
)
type DisappearingMessageQuery struct {
*dbutil.QueryHelper[*DisappearingMessage]
}
type DisappearingMessage struct {
qh *dbutil.QueryHelper[*DisappearingMessage]
RoomID id.RoomID
EventID id.EventID
ExpireIn time.Duration
ExpireAt time.Time
}
func newDisappearingMessage(qh *dbutil.QueryHelper[*DisappearingMessage]) *DisappearingMessage {
return &DisappearingMessage{qh: qh}
}
func (dmq *DisappearingMessageQuery) NewWithValues(roomID id.RoomID, eventID id.EventID, expireIn time.Duration, expireAt time.Time) *DisappearingMessage {
return &DisappearingMessage{
qh: dmq.QueryHelper,
RoomID: roomID,
EventID: eventID,
ExpireIn: expireIn,
ExpireAt: expireAt,
}
}
func (dmq *DisappearingMessageQuery) GetUnscheduledForRoom(ctx context.Context, roomID id.RoomID) ([]*DisappearingMessage, error) {
return dmq.QueryMany(ctx, getUnscheduledDisappearingMessagesForRoomQuery, roomID)
}
func (dmq *DisappearingMessageQuery) GetExpiredMessages(ctx context.Context) ([]*DisappearingMessage, error) {
return dmq.QueryMany(ctx, getExpiredDisappearingMessagesQuery, time.Now().Unix()+1)
}
func (dmq *DisappearingMessageQuery) GetNextScheduledMessage(ctx context.Context) (*DisappearingMessage, error) {
return dmq.QueryOne(ctx, getNextDisappearingMessageQuery)
}
func (msg *DisappearingMessage) Scan(row dbutil.Scannable) (*DisappearingMessage, error) {
var expireIn int64
var expireAt sql.NullInt64
err := row.Scan(&msg.RoomID, &msg.EventID, &expireIn, &expireAt)
if err != nil {
return nil, err
}
msg.ExpireIn = time.Duration(expireIn) * time.Second
if expireAt.Valid {
msg.ExpireAt = time.Unix(expireAt.Int64, 0)
}
return msg, nil
}
func (msg *DisappearingMessage) sqlVariables() []any {
var expireAt sql.NullInt64
if !msg.ExpireAt.IsZero() {
expireAt.Valid = true
expireAt.Int64 = msg.ExpireAt.Unix()
}
return []any{msg.RoomID, msg.EventID, int64(msg.ExpireIn.Seconds()), expireAt}
}
func (msg *DisappearingMessage) Insert(ctx context.Context) error {
return msg.qh.Exec(ctx, insertDisappearingMessageQuery, msg.sqlVariables()...)
}
func (msg *DisappearingMessage) StartExpirationTimer(ctx context.Context) error {
msg.ExpireAt = time.Now().Add(msg.ExpireIn)
return msg.qh.Exec(ctx, updateDisappearingMessageQuery, msg.EventID, msg.ExpireAt.Unix())
}
func (msg *DisappearingMessage) Delete(ctx context.Context) error {
return msg.qh.Exec(ctx, deleteDisappearingMessageQuery, msg.EventID)
}