forked from jshiffer/matterbridge
148 lines
3.6 KiB
Go
148 lines
3.6 KiB
Go
// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
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// Copyright (C) 2019 Tulir Asokan
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package whatsappExt
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import (
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"encoding/json"
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"strings"
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"github.com/Rhymen/go-whatsapp"
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)
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type ChatUpdateCommand string
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const (
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ChatUpdateCommandAction ChatUpdateCommand = "action"
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)
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type ChatUpdate struct {
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JID string `json:"id"`
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Command ChatUpdateCommand `json:"cmd"`
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Data ChatUpdateData `json:"data"`
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}
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type ChatActionType string
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const (
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ChatActionNameChange ChatActionType = "subject"
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ChatActionAddTopic ChatActionType = "desc_add"
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ChatActionRemoveTopic ChatActionType = "desc_remove"
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ChatActionRestrict ChatActionType = "restrict"
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ChatActionAnnounce ChatActionType = "announce"
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ChatActionPromote ChatActionType = "promote"
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ChatActionDemote ChatActionType = "demote"
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)
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type ChatUpdateData struct {
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Action ChatActionType
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SenderJID string
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NameChange struct {
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Name string `json:"subject"`
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SetAt int64 `json:"s_t"`
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SetBy string `json:"s_o"`
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}
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AddTopic struct {
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Topic string `json:"desc"`
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ID string `json:"descId"`
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SetAt int64 `json:"descTime"`
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}
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RemoveTopic struct {
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ID string `json:"descId"`
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}
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Restrict bool
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Announce bool
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PermissionChange struct {
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JIDs []string `json:"participants"`
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}
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}
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func (cud *ChatUpdateData) UnmarshalJSON(data []byte) error {
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var arr []json.RawMessage
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err := json.Unmarshal(data, &arr)
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if err != nil {
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return err
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} else if len(arr) < 3 {
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return nil
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}
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err = json.Unmarshal(arr[0], &cud.Action)
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if err != nil {
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return err
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}
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err = json.Unmarshal(arr[1], &cud.SenderJID)
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if err != nil {
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return err
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}
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cud.SenderJID = strings.Replace(cud.SenderJID, OldUserSuffix, NewUserSuffix, 1)
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var unmarshalTo interface{}
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switch cud.Action {
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case ChatActionNameChange:
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unmarshalTo = &cud.NameChange
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case ChatActionAddTopic:
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unmarshalTo = &cud.AddTopic
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case ChatActionRemoveTopic:
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unmarshalTo = &cud.RemoveTopic
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case ChatActionRestrict:
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unmarshalTo = &cud.Restrict
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case ChatActionAnnounce:
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unmarshalTo = &cud.Announce
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case ChatActionPromote, ChatActionDemote:
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unmarshalTo = &cud.PermissionChange
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default:
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return nil
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}
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err = json.Unmarshal(arr[2], unmarshalTo)
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if err != nil {
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return err
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}
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cud.NameChange.SetBy = strings.Replace(cud.NameChange.SetBy, OldUserSuffix, NewUserSuffix, 1)
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for index, jid := range cud.PermissionChange.JIDs {
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cud.PermissionChange.JIDs[index] = strings.Replace(jid, OldUserSuffix, NewUserSuffix, 1)
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}
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return nil
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}
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type ChatUpdateHandler interface {
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whatsapp.Handler
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HandleChatUpdate(ChatUpdate)
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}
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func (ext *ExtendedConn) handleMessageChatUpdate(message []byte) {
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var event ChatUpdate
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err := json.Unmarshal(message, &event)
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if err != nil {
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ext.jsonParseError(err)
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return
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}
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event.JID = strings.Replace(event.JID, OldUserSuffix, NewUserSuffix, 1)
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for _, handler := range ext.handlers {
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chatUpdateHandler, ok := handler.(ChatUpdateHandler)
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if !ok {
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continue
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}
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go chatUpdateHandler.HandleChatUpdate(event)
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}
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}
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