mautrix-whatsapp/database/message.go

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// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
// Copyright (C) 2019 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 (
"bytes"
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"database/sql"
"encoding/json"
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waProto "github.com/Rhymen/go-whatsapp/binary/proto"
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log "maunium.net/go/maulogger/v2"
"maunium.net/go/mautrix-whatsapp/types"
)
type MessageQuery struct {
db *Database
log log.Logger
}
func (mq *MessageQuery) New() *Message {
return &Message{
db: mq.db,
log: mq.log,
}
}
func (mq *MessageQuery) GetAll(chat PortalKey) (messages []*Message) {
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rows, err := mq.db.Query("SELECT * FROM message WHERE chat_jid=$1 AND chat_receiver=$2", chat.JID, chat.Receiver)
if err != nil || rows == nil {
return nil
}
defer rows.Close()
for rows.Next() {
messages = append(messages, mq.New().Scan(rows))
}
return
}
func (mq *MessageQuery) GetByJID(chat PortalKey, jid types.WhatsAppMessageID) *Message {
return mq.get("SELECT chat_jid, chat_receiver, jid, mxid, sender, timestamp, content " +
"FROM message WHERE chat_jid=$1 AND chat_receiver=$2 AND jid=$3", chat.JID, chat.Receiver, jid)
}
func (mq *MessageQuery) GetByMXID(mxid types.MatrixEventID) *Message {
return mq.get("SELECT chat_jid, chat_receiver, jid, mxid, sender, timestamp, content " +
"FROM message WHERE mxid=$1", mxid)
}
func (mq *MessageQuery) GetLastInChat(chat PortalKey) *Message {
msg := mq.get("SELECT chat_jid, chat_receiver, jid, mxid, sender, timestamp, content " +
"FROM message WHERE chat_jid=$1 AND chat_receiver=$2 ORDER BY timestamp DESC LIMIT 1", chat.JID, chat.Receiver)
if msg == nil || msg.Timestamp == 0 {
// Old db, we don't know what the last message is.
return nil
}
return msg
}
func (mq *MessageQuery) get(query string, args ...interface{}) *Message {
row := mq.db.QueryRow(query, args...)
if row == nil {
return nil
}
return mq.New().Scan(row)
}
type Message struct {
db *Database
log log.Logger
Chat PortalKey
JID types.WhatsAppMessageID
MXID types.MatrixEventID
Sender types.WhatsAppID
Timestamp uint64
Content *waProto.Message
}
func (msg *Message) Scan(row Scannable) *Message {
var content []byte
err := row.Scan(&msg.Chat.JID, &msg.Chat.Receiver, &msg.JID, &msg.MXID, &msg.Sender, &msg.Timestamp, &content)
if err != nil {
if err != sql.ErrNoRows {
msg.log.Errorln("Database scan failed:", err)
}
return nil
}
msg.decodeBinaryContent(content)
return msg
}
func (msg *Message) decodeBinaryContent(content []byte) {
msg.Content = &waProto.Message{}
reader := bytes.NewReader(content)
dec := json.NewDecoder(reader)
err := dec.Decode(msg.Content)
if err != nil {
msg.log.Warnln("Failed to decode message content:", err)
}
}
func (msg *Message) encodeBinaryContent() []byte {
var buf bytes.Buffer
enc := json.NewEncoder(&buf)
err := enc.Encode(msg.Content)
if err != nil {
msg.log.Warnln("Failed to encode message content:", err)
}
return buf.Bytes()
}
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func (msg *Message) Insert() {
_, err := msg.db.Exec("INSERT INTO message (chat_jid, chat_receiver, jid, mxid, sender, timestamp, content) " +
"VALUES ($1, $2, $3, $4, $5, $6, $7)",
msg.Chat.JID, msg.Chat.Receiver, msg.JID, msg.MXID, msg.Sender, msg.Timestamp, msg.encodeBinaryContent())
if err != nil {
msg.log.Warnfln("Failed to insert %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)
}
}