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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 whatsappExt
import (
"encoding/json"
"github.com/Rhymen/go-whatsapp"
)
type JSONMessage []json.RawMessage
type JSONMessageType string
const (
MessageMsgInfo JSONMessageType = "MsgInfo"
MessageMsg JSONMessageType = "Msg"
MessagePresence JSONMessageType = "Presence"
MessageStream JSONMessageType = "Stream"
MessageConn JSONMessageType = "Conn"
MessageProps JSONMessageType = "Props"
MessageCmd JSONMessageType = "Cmd"
MessageChat JSONMessageType = "Chat"
)
func (ext *ExtendedConn) AddHandler(handler whatsapp.Handler) {
ext.Conn.AddHandler(handler)
ext.handlers = append(ext.handlers, handler)
}
func (ext *ExtendedConn) HandleError(error) {}
type UnhandledJSONMessageHandler interface {
whatsapp.Handler
HandleUnhandledJSONMessage(string)
}
type JSONParseErrorHandler interface {
whatsapp.Handler
HandleJSONParseError(error)
}
func (ext *ExtendedConn) jsonParseError(err error) {
for _, handler := range ext.handlers {
errorHandler, ok := handler.(JSONParseErrorHandler)
if !ok {
continue
}
errorHandler.HandleJSONParseError(err)
}
}
func (ext *ExtendedConn) HandleJsonMessage(message string) {
msg := JSONMessage{}
err := json.Unmarshal([]byte(message), &msg)
if err != nil || len(msg) < 2 {
ext.jsonParseError(err)
return
}
var msgType JSONMessageType
json.Unmarshal(msg[0], &msgType)
switch msgType {
case MessagePresence:
ext.handleMessagePresence(msg[1])
case MessageStream:
ext.handleMessageStream(msg[1:])
case MessageConn:
ext.handleMessageConn(msg[1])
case MessageProps:
ext.handleMessageProps(msg[1])
case MessageMsgInfo, MessageMsg:
ext.handleMessageMsgInfo(msgType, msg[1])
case MessageCmd:
ext.handleMessageCommand(msg[1])
case MessageChat:
ext.handleMessageChatUpdate(msg[1])
default:
for _, handler := range ext.handlers {
ujmHandler, ok := handler.(UnhandledJSONMessageHandler)
if !ok {
continue
}
ujmHandler.HandleUnhandledJSONMessage(message)
}
}
}
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