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// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2018 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"maunium.net/go/gomatrix"
)
// Room represents a single Matrix room.
type Room struct {
*gomatrix.Room
PrevBatch string
memberCache map[string]*RoomMember
nameCache string
topicCache string
}
// UpdateState updates the room's current state with the given Event. This will clobber events based
// on the type/state_key combination.
func (room *Room) UpdateState(event *gomatrix.Event) {
_, exists := room.State[event.Type]
if !exists {
room.State[event.Type] = make(map[string]*gomatrix.Event)
}
switch event.Type {
case "m.room.member":
room.memberCache = nil
case "m.room.name":
case "m.room.canonical_alias":
case "m.room.alias":
room.nameCache = ""
case "m.room.topic":
room.topicCache = ""
}
room.State[event.Type][*event.StateKey] = event
}
// GetStateEvent returns the state event for the given type/state_key combo, or nil.
func (room *Room) GetStateEvent(eventType string, stateKey string) *gomatrix.Event {
stateEventMap, _ := room.State[eventType]
event, _ := stateEventMap[stateKey]
return event
}
// GetStateEvents returns the state events for the given type.
func (room *Room) GetStateEvents(eventType string) map[string]*gomatrix.Event {
stateEventMap, _ := room.State[eventType]
return stateEventMap
}
// GetTopic returns the topic of the room.
func (room *Room) GetTopic() string {
if len(room.topicCache) == 0 {
topicEvt := room.GetStateEvent("m.room.topic", "")
if topicEvt != nil {
room.topicCache, _ = topicEvt.Content["topic"].(string)
}
}
return room.topicCache
}
// GetTitle returns the display title of the room.
func (room *Room) GetTitle() string {
if len(room.nameCache) == 0 {
nameEvt := room.GetStateEvent("m.room.name", "")
if nameEvt != nil {
room.nameCache, _ = nameEvt.Content["name"].(string)
}
}
if len(room.nameCache) == 0 {
canonicalAliasEvt := room.GetStateEvent("m.room.canonical_alias", "")
if canonicalAliasEvt != nil {
room.nameCache, _ = canonicalAliasEvt.Content["alias"].(string)
}
}
if len(room.nameCache) == 0 {
// TODO the spec says clients should not use m.room.aliases for room names.
// However, Riot also uses m.room.aliases, so this is here now.
aliasEvents := room.GetStateEvents("m.room.aliases")
for _, event := range aliasEvents {
aliases, _ := event.Content["aliases"].([]interface{})
if len(aliases) > 0 {
room.nameCache, _ = aliases[0].(string)
break
}
}
}
if len(room.nameCache) == 0 {
// TODO follow other title rules in spec
room.nameCache = room.ID
}
return room.nameCache
}
type RoomMember struct {
UserID string `json:"-"`
Membership string `json:"membership"`
DisplayName string `json:"displayname"`
AvatarURL string `json:"avatar_url"`
}
func eventToRoomMember(userID string, event *gomatrix.Event) *RoomMember {
if event == nil {
return &RoomMember{
UserID: userID,
Membership: "leave",
}
}
membership, _ := event.Content["membership"].(string)
avatarURL, _ := event.Content["avatar_url"].(string)
displayName, _ := event.Content["displayname"].(string)
if len(displayName) == 0 {
displayName = userID
}
return &RoomMember{
UserID: userID,
Membership: membership,
DisplayName: displayName,
AvatarURL: avatarURL,
}
}
func (room *Room) createMemberCache() map[string]*RoomMember {
cache := make(map[string]*RoomMember)
events := room.GetStateEvents("m.room.member")
if events != nil {
for userID, event := range events {
member := eventToRoomMember(userID, event)
if member.Membership != "leave" {
cache[member.UserID] = member
}
}
}
room.memberCache = cache
return cache
}
func (room *Room) GetMembers() map[string]*RoomMember {
if len(room.memberCache) == 0 {
room.createMemberCache()
}
return room.memberCache
}
func (room *Room) GetMember(userID string) *RoomMember {
if len(room.memberCache) == 0 {
room.createMemberCache()
}
member, _ := room.memberCache[userID]
return member
}
// NewRoom creates a new Room with the given ID
func NewRoom(roomID string) *Room {
return &Room{
Room: gomatrix.NewRoom(roomID),
}
}
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