mautrix-whatsapp/database/message.go
2021-11-07 23:42:23 +02:00

185 lines
5.7 KiB
Go

// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
// Copyright (C) 2021 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 (
"database/sql"
"errors"
"strings"
"time"
log "maunium.net/go/maulogger/v2"
"maunium.net/go/mautrix/id"
"go.mau.fi/whatsmeow/types"
)
type MessageQuery struct {
db *Database
log log.Logger
}
func (mq *MessageQuery) New() *Message {
return &Message{
db: mq.db,
log: mq.log,
}
}
const (
getAllMessagesQuery = `
SELECT chat_jid, chat_receiver, jid, mxid, sender, timestamp, sent, decryption_error FROM message
WHERE chat_jid=$1 AND chat_receiver=$2
`
getMessageByJIDQuery = `
SELECT chat_jid, chat_receiver, jid, mxid, sender, timestamp, sent, decryption_error FROM message
WHERE chat_jid=$1 AND chat_receiver=$2 AND jid=$3
`
getMessageByMXIDQuery = `
SELECT chat_jid, chat_receiver, jid, mxid, sender, timestamp, sent, decryption_error FROM message
WHERE mxid=$1
`
getLastMessageInChatQuery = `
SELECT chat_jid, chat_receiver, jid, mxid, sender, timestamp, sent, decryption_error FROM message
WHERE chat_jid=$1 AND chat_receiver=$2 AND timestamp<=$3 AND sent=true ORDER BY timestamp DESC LIMIT 1
`
getFirstMessageInChatQuery = `
SELECT chat_jid, chat_receiver, jid, mxid, sender, timestamp, sent, decryption_error FROM message
WHERE chat_jid=$1 AND chat_receiver=$2 AND sent=true ORDER BY timestamp ASC LIMIT 1
`
)
func (mq *MessageQuery) GetAll(chat PortalKey) (messages []*Message) {
rows, err := mq.db.Query(getAllMessagesQuery, chat.JID, chat.Receiver)
if err != nil || rows == nil {
return nil
}
for rows.Next() {
messages = append(messages, mq.New().Scan(rows))
}
return
}
func (mq *MessageQuery) GetByJID(chat PortalKey, jid types.MessageID) *Message {
return mq.maybeScan(mq.db.QueryRow(getMessageByJIDQuery, chat.JID, chat.Receiver, jid))
}
func (mq *MessageQuery) GetByMXID(mxid id.EventID) *Message {
return mq.maybeScan(mq.db.QueryRow(getMessageByMXIDQuery, mxid))
}
func (mq *MessageQuery) GetLastInChat(chat PortalKey) *Message {
return mq.GetLastInChatBefore(chat, time.Now().Add(60*time.Second))
}
func (mq *MessageQuery) GetLastInChatBefore(chat PortalKey, maxTimestamp time.Time) *Message {
msg := mq.maybeScan(mq.db.QueryRow(getLastMessageInChatQuery, chat.JID, chat.Receiver, maxTimestamp.Unix()))
if msg == nil || msg.Timestamp.IsZero() {
// Old db, we don't know what the last message is.
return nil
}
return msg
}
func (mq *MessageQuery) GetFirstInChat(chat PortalKey) *Message {
return mq.maybeScan(mq.db.QueryRow(getFirstMessageInChatQuery, chat.JID, chat.Receiver))
}
func (mq *MessageQuery) maybeScan(row *sql.Row) *Message {
if row == nil {
return nil
}
return mq.New().Scan(row)
}
type Message struct {
db *Database
log log.Logger
Chat PortalKey
JID types.MessageID
MXID id.EventID
Sender types.JID
Timestamp time.Time
Sent bool
DecryptionError bool
}
func (msg *Message) IsFakeMXID() bool {
return strings.HasPrefix(msg.MXID.String(), "net.maunium.whatsapp.fake::")
}
func (msg *Message) IsFakeJID() bool {
return strings.HasPrefix(msg.JID, "FAKE::")
}
func (msg *Message) Scan(row Scannable) *Message {
var ts int64
err := row.Scan(&msg.Chat.JID, &msg.Chat.Receiver, &msg.JID, &msg.MXID, &msg.Sender, &ts, &msg.Sent, &msg.DecryptionError)
if err != nil {
if !errors.Is(err, sql.ErrNoRows) {
msg.log.Errorln("Database scan failed:", err)
}
return nil
}
if ts != 0 {
msg.Timestamp = time.Unix(ts, 0)
}
return msg
}
func (msg *Message) Insert() {
var sender interface{} = msg.Sender
// Slightly hacky hack to allow inserting empty senders (used for post-backfill dummy events)
if msg.Sender.IsEmpty() {
sender = ""
}
_, err := msg.db.Exec(`INSERT INTO message
(chat_jid, chat_receiver, jid, mxid, sender, timestamp, sent, decryption_error)
VALUES ($1, $2, $3, $4, $5, $6, $7, $8)`,
msg.Chat.JID, msg.Chat.Receiver, msg.JID, msg.MXID, sender, msg.Timestamp.Unix(), msg.Sent, msg.DecryptionError)
if err != nil {
msg.log.Warnfln("Failed to insert %s@%s: %v", msg.Chat, msg.JID, err)
}
}
func (msg *Message) MarkSent(ts time.Time) {
msg.Sent = true
msg.Timestamp = ts
_, err := msg.db.Exec("UPDATE message SET sent=true, timestamp=$1 WHERE chat_jid=$2 AND chat_receiver=$3 AND jid=$4", ts.Unix(), msg.Chat.JID, msg.Chat.Receiver, msg.JID)
if err != nil {
msg.log.Warnfln("Failed to update %s@%s: %v", msg.Chat, msg.JID, err)
}
}
func (msg *Message) UpdateMXID(mxid id.EventID, stillDecryptionError bool) {
msg.MXID = mxid
msg.DecryptionError = stillDecryptionError
_, err := msg.db.Exec("UPDATE message SET mxid=$1, decryption_error=$2 WHERE chat_jid=$3 AND chat_receiver=$4 AND jid=$5", mxid, stillDecryptionError, msg.Chat.JID, msg.Chat.Receiver, msg.JID)
if err != nil {
msg.log.Warnfln("Failed to update %s@%s: %v", msg.Chat, msg.JID, err)
}
}
func (msg *Message) Delete() {
_, err := msg.db.Exec("DELETE FROM message WHERE chat_jid=$1 AND chat_receiver=$2 AND jid=$3", msg.Chat.JID, msg.Chat.Receiver, msg.JID)
if err != nil {
msg.log.Warnfln("Failed to delete %s@%s: %v", msg.Chat, msg.JID, err)
}
}