// mautrix-groupme - A Matrix-GroupMe puppeting bridge.
// Copyright (C) 2022 Sumner Evans, Karmanyaah Malhotra
//
// 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 main

import (
	"context"
	"errors"
	"fmt"
	"net/http"
	"sort"
	"strings"
	"sync"
	"time"

	log "maunium.net/go/maulogger/v2"
	"maunium.net/go/mautrix"
	"maunium.net/go/mautrix/appservice"
	"maunium.net/go/mautrix/bridge"
	"maunium.net/go/mautrix/bridge/bridgeconfig"
	"maunium.net/go/mautrix/event"
	"maunium.net/go/mautrix/format"
	"maunium.net/go/mautrix/id"

	"gitea.watsonlabs.net/watsonb8/groupme-lib"

	"github.com/beeper/groupme/database"
	"github.com/beeper/groupme/groupmeext"
)

type User struct {
	*database.User
	Conn *groupme.PushSubscription

	bridge *GMBridge
	log    log.Logger

	Admin           bool
	Whitelisted     bool
	PermissionLevel bridgeconfig.PermissionLevel

	BridgeState *bridge.BridgeStateQueue

	Client           *groupmeext.Client
	ConnectionErrors int
	SpaceId          string

	ChatList     map[groupme.ID]*groupme.Chat
	GroupList    map[groupme.ID]*groupme.Group
	RelationList map[groupme.ID]*groupme.User

	cleanDisconnection  bool
	batteryWarningsSent int
	lastReconnection    int64

	chatListReceived chan struct{}
	syncPortalsDone  chan struct{}

	messageInput  chan PortalMessage
	messageOutput chan PortalMessage

	mgmtCreateLock sync.Mutex

	spaceCreateLock        sync.Mutex
	spaceMembershipChecked bool

	syncStart chan struct{}
	syncWait  sync.WaitGroup
}

type Chat struct {
	Portal          *Portal
	LastMessageTime uint64
	Group           *groupme.Group
	DM              *groupme.Chat
}

type ChatList []Chat

var connectWaitGroup = sync.WaitGroup{}

func (cl ChatList) Len() int {
	return len(cl)
}

func (cl ChatList) Less(i, j int) bool {
	return cl[i].LastMessageTime > cl[j].LastMessageTime
}

func (cl ChatList) Swap(i, j int) {
	cl[i], cl[j] = cl[j], cl[i]
}

// Public Properties

func (user *User) GetPermissionLevel() bridgeconfig.PermissionLevel {
	return user.PermissionLevel
}

func (user *User) GetManagementRoomID() id.RoomID {
	return user.ManagementRoom
}

func (user *User) GetMXID() id.UserID {
	return user.MXID
}

func (user *User) GetGMID() groupme.ID {
	if user.GMID == "" {
		u, err := user.Client.MyUser(context.TODO(), user.Token)
		if err != nil {
			user.log.Errorln("Failed to get own GroupMe ID:", err)
			return ""
		}
		user.GMID = u.ID
	}
	return user.GMID
}

func (user *User) GetCommandState() map[string]interface{} {
	return nil
}

func (user *User) GetIDoublePuppet() bridge.DoublePuppet {
	p := user.bridge.GetPuppetByCustomMXID(user.MXID)
	if p == nil || p.CustomIntent() == nil {
		return nil
	}
	return p
}

func (user *User) GetIGhost() bridge.Ghost {
	if user.GMID == "" {
		return nil
	}
	p := user.bridge.GetPuppetByGMID(user.GMID)
	if p == nil {
		return nil
	}
	return p
}

func (user *User) GetSpaceRoom() id.RoomID {
	return user.getSpaceRoom(&user.SpaceRoom, "GroupMe", "Your GroupMe bridged chats", "")
}

func (user *User) GetManagementRoom() id.RoomID {
	if len(user.ManagementRoom) == 0 {
		user.mgmtCreateLock.Lock()
		defer user.mgmtCreateLock.Unlock()
		if len(user.ManagementRoom) > 0 {
			return user.ManagementRoom
		}
		creationContent := make(map[string]interface{})
		if !user.bridge.Config.Bridge.FederateRooms {
			creationContent["m.federate"] = false
		}
		resp, err := user.bridge.Bot.CreateRoom(&mautrix.ReqCreateRoom{
			Topic:           "GroupMe bridge notices",
			IsDirect:        true,
			CreationContent: creationContent,
		})
		if err != nil {
			user.log.Errorln("Failed to auto-create management room:", err)
		} else {
			user.SetManagementRoom(resp.RoomID)
		}
	}
	return user.ManagementRoom
}

func (user *User) SetManagementRoom(roomID id.RoomID) {
	existingUser, ok := user.bridge.managementRooms[roomID]
	if ok {
		existingUser.ManagementRoom = ""
		existingUser.Update()
	}
	//
	user.ManagementRoom = roomID
	user.bridge.managementRooms[user.ManagementRoom] = user
	user.Update()
}

func (user *User) HasSession() bool {
	return len(user.Token) > 0
}

func (user *User) IsConnected() bool {
	// TODO: better connection check
	return user.Conn != nil
}

func (user *User) IsLoggedIn() bool {
	return true
}

func (user *User) IsLoginInProgress() bool {
	// return user.Conn != nil && user.Conn.IsLoginInProgress()
	return false
}

func (user *User) ShouldCallSynchronously() bool {
	return true
}

func (user *User) GetPortalByGMID(gmid groupme.ID) *Portal {
	return user.bridge.GetPortalByGMID(user.PortalKey(gmid))
}

// Public Methods

func (user *User) Login(token string) error {
	user.Token = token
	user.Update()

	user.addToGMIDMap()
	if user.Connect(user.Client, user.Conn) {
		user.PostLogin()
		return nil
	}
	return errors.New("failed to connect")
}

func (user *User) PostLogin() {
	user.bridge.Metrics.TrackConnectionState(user.GMID, true)
	user.bridge.Metrics.TrackLoginState(user.GMID, true)
	user.bridge.Metrics.TrackBufferLength(user.MXID, 0)
	user.log.Debugln("Locking processing of incoming messages and starting post-login sync")
	user.syncWait.Add(1)
	user.syncStart <- struct{}{}
	go user.intPostLogin()
}

func (user *User) Connect(gmClient *groupmeext.Client, pushSub *groupme.PushSubscription) bool {
	user.SpaceId = "GroupMe"
	user.Client = gmClient
	if user.Conn != nil {
		return true
	} else if len(user.Token) == 0 {
		return false
	}

	user.log.Debugfln("Connecting to GroupMe")
	timeout := time.Duration(user.bridge.Config.GroupMe.ConnectionTimeout)
	if timeout == 0 {
		timeout = 20
	}

	user.Conn = pushSub

	if user.GMID == "" {
		myuser, err := user.Client.MyUser(context.TODO(), user.Token)
		if err != nil {
			log.Fatal(err) //TODO
		}
		user.GMID = myuser.ID
	}

	user.Conn.AddFullHandler(user, user.Token)

	//TODO: typing notification?
	return user.RestoreSession()
}

func (user *User) RestoreSession() bool {
	if len(user.Token) > 0 {

		err := user.Conn.SubscribeToUser(context.TODO(), user.GMID, user.Token)
		if err != nil {
			fmt.Println(err)
		}

		//TODO: typing notifics
		user.ConnectionErrors = 0
		//user.SetSession(&sess)
		user.log.Debugln("Session restored successfully")
		user.PostLogin()

		return true
	} else {
		user.log.Debugln("tried login but no token")
		return false
	}
}

func (user *User) UpdateDirectChats(chats map[id.UserID][]id.RoomID) {
	if !user.bridge.Config.Bridge.SyncDirectChatList {
		return
	}
	puppet := user.bridge.GetPuppetByCustomMXID(user.MXID)
	if puppet == nil || puppet.CustomIntent() == nil {
		return
	}
	intent := puppet.CustomIntent()
	method := http.MethodPatch
	if chats == nil {
		chats = user.getDirectChats()
		method = http.MethodPut
	}
	user.log.Debugln("Updating m.direct list on homeserver")
	var err error
	if user.bridge.Config.Homeserver.Software == bridgeconfig.SoftwareAsmux {
		urlPath := intent.BuildClientURL("unstable", "com.beeper.asmux", "dms")
		_, err = intent.MakeFullRequest(mautrix.FullRequest{
			Method:      method,
			URL:         urlPath,
			Headers:     http.Header{"X-Asmux-Auth": {user.bridge.AS.Registration.AppToken}},
			RequestJSON: chats,
		})
	} else {
		existingChats := make(map[id.UserID][]id.RoomID)
		err = intent.GetAccountData(event.AccountDataDirectChats.Type, &existingChats)
		if err != nil {
			user.log.Warnln("Failed to get m.direct list to update it:", err)
			return
		}
		for userID, rooms := range existingChats {
			if _, ok := user.bridge.ParsePuppetMXID(userID); !ok {
				// This is not a ghost user, include it in the new list
				chats[userID] = rooms
			} else if _, ok := chats[userID]; !ok && method == http.MethodPatch {
				// This is a ghost user, but we're not replacing the whole list, so include it too
				chats[userID] = rooms
			}
		}
		err = intent.SetAccountData(event.AccountDataDirectChats.Type, &chats)
	}
	if err != nil {
		user.log.Warnln("Failed to update m.direct list:", err)
	}
}

func (user *User) PortalKey(gmid groupme.ID) database.PortalKey {
	return database.NewPortalKey(gmid, user.GMID)
}

// Handlers

func (user *User) HandleTextMessage(message groupme.Message) {
	id := database.ParsePortalKey(message.GroupID.String())

	if id == nil {
		if user.GMID == message.UserID {
			id = database.ParsePortalKey(message.UserID.String() + "+" + message.RecipientID.String())
		} else {
			id = database.ParsePortalKey(message.RecipientID.String() + "+" + message.UserID.String())
		}
	}
	if id == nil {
		user.log.Errorln("Error parsing conversationid/portalkey", message.ConversationID.String(), "ignoring message")
		return
	}

	user.messageInput <- PortalMessage{*id, user, &message, uint64(message.CreatedAt.ToTime().Unix())}
}

func (user *User) HandleLike(msg groupme.Message) {
	user.HandleTextMessage(msg)
}

func (user *User) HandleJoin(id groupme.ID) {
	user.HandleChatList()
	//TODO: efficient
}

func (user *User) HandleGroupName(group groupme.ID, newName string) {
	p := user.GetPortalByGMID(group)
	if p != nil {
		p.UpdateName(newName, "", false)
		//get more info abt actual user TODO
	}
	//bugs atm with above?
	user.HandleChatList()

}

func (user *User) HandleGroupTopic(_ groupme.ID, _ string) {
	user.HandleChatList()
}

func (user *User) HandleGroupMembership(_ groupme.ID, _ string) {
	user.HandleChatList()
	//TODO
}

func (user *User) HandleGroupAvatar(_ groupme.ID, _ string) {
	user.HandleChatList()
}

func (user *User) HandleLikeIcon(_ groupme.ID, _, _ int, _ string) {
	//TODO
}

func (user *User) HandleNewNickname(groupID, userID groupme.ID, name string) {
	puppet := user.bridge.GetPuppetByGMID(userID)
	if puppet != nil {
		puppet.UpdateName(groupme.Member{
			Nickname: name,
			UserID:   userID,
		}, false)
	}
}

func (user *User) HandleNewAvatarInGroup(groupID, userID groupme.ID, url string) {
	puppet := user.bridge.GetPuppetByGMID(userID)
	puppet.UpdateAvatar(user, false)
}

func (user *User) HandleMembers(_ groupme.ID, _ []groupme.Member, _ bool) {
	user.HandleChatList()
}

func (user *User) HandleError(err error) {
}

func (user *User) HandleJSONParseError(err error) {
	user.log.Errorln("GroupMe JSON parse error:", err)
}

func (user *User) HandleChatList() {
	chatMap := map[groupme.ID]*groupme.Group{}
	chats, err := user.Client.IndexAllGroups(user.Token)
	if err != nil {
		user.log.Errorln("chat sync error", err) //TODO: handle
		return
	}
	for _, chat := range chats {
		chatMap[chat.ID] = chat
	}
	user.GroupList = chatMap

	dmMap := map[groupme.ID]*groupme.Chat{}
	dms, err := user.Client.IndexAllChats(user.Token)
	if err != nil {
		user.log.Errorln("chat sync error", err) //TODO: handle
		return
	}
	for _, dm := range dms {
		dmMap[dm.LastMessage.ConversationID] = dm
	}
	user.ChatList = dmMap

	userMap := map[groupme.ID]*groupme.User{}
	users, err := user.Client.IndexAllRelations(user.Token)
	if err != nil {
		user.log.Errorln("Error syncing user list, continuing sync", err)
	}

	for _, u := range users {
		puppet := user.bridge.GetPuppetByGMID(u.ID)
		//               "" for overall user not related to one group
		puppet.Sync(user, &groupme.Member{
			UserID:   u.ID,
			Nickname: u.Name,
			ImageURL: u.AvatarURL,
		}, false, false)
		userMap[u.ID] = u
	}

	for _, dm := range dms {
		puppet := user.bridge.GetPuppetByGMID(dm.OtherUser.ID)

		puppet.Sync(user, &groupme.Member{
			UserID:   dm.OtherUser.ID,
			Nickname: dm.OtherUser.Name,
			ImageURL: dm.OtherUser.AvatarURL,
		}, false, false)
		userMap[dm.OtherUser.ID] = &dm.OtherUser
	}
	user.RelationList = userMap

	user.log.Infoln("Chat list received")
	user.chatListReceived <- struct{}{}
	go user.syncPortals(false)
}

// Private Methods

func (user *User) handleMessageLoop() {
	for {
		select {
		case msg := <-user.messageOutput:
			user.bridge.Metrics.TrackBufferLength(user.MXID, len(user.messageOutput))
			puppet := user.bridge.GetPuppetByGMID(msg.data.UserID)
			portal := user.bridge.GetPortalByGMID(msg.chat)
			if puppet != nil {
				puppet.Sync(nil, &groupme.Member{
					UserID:   msg.data.UserID,
					Nickname: msg.data.Name,
					ImageURL: msg.data.AvatarURL,
				}, false, false)
			}
			portal.messages <- msg
		case <-user.syncStart:
			user.log.Debugln("Processing of incoming messages is locked")
			user.bridge.Metrics.TrackSyncLock(user.GMID, true)
			user.syncWait.Wait()
			user.bridge.Metrics.TrackSyncLock(user.GMID, false)
			user.log.Debugln("Processing of incoming messages unlocked")
		}
	}
}

func (user *User) addToGMIDMap() {
	user.bridge.usersLock.Lock()
	user.bridge.usersByGMID[user.GMID] = user
	user.bridge.usersLock.Unlock()
}

func (user *User) removeFromGMIDMap() {
	user.bridge.usersLock.Lock()
	jidUser, ok := user.bridge.usersByGMID[user.GMID]
	if ok && user == jidUser {
		delete(user.bridge.usersByGMID, user.GMID)
	}
	user.bridge.usersLock.Unlock()
	user.bridge.Metrics.TrackLoginState(user.GMID, false)
}

func (user *User) ensureInvited(intent *appservice.IntentAPI, roomID id.RoomID, isDirect bool) (ok bool) {
	extraContent := make(map[string]interface{})
	if isDirect {
		extraContent["is_direct"] = true
	}
	customPuppet := user.bridge.GetPuppetByCustomMXID(user.MXID)
	if customPuppet != nil && customPuppet.CustomIntent() != nil {
		extraContent["fi.mau.will_auto_accept"] = true
	}
	_, err := intent.InviteUser(roomID, &mautrix.ReqInviteUser{UserID: user.MXID}, extraContent)
	var httpErr mautrix.HTTPError
	if err != nil && errors.As(err, &httpErr) && httpErr.RespError != nil && strings.Contains(httpErr.RespError.Err, "is already in the room") {
		user.bridge.StateStore.SetMembership(roomID, user.MXID, event.MembershipJoin)
		ok = true
		return
	} else if err != nil {
		user.log.Warnfln("Failed to invite user to %s: %v", roomID, err)
	} else {
		ok = true
	}

	if customPuppet != nil && customPuppet.CustomIntent() != nil {
		err = customPuppet.CustomIntent().EnsureJoined(roomID, appservice.EnsureJoinedParams{IgnoreCache: true})
		if err != nil {
			user.log.Warnfln("Failed to auto-join %s: %v", roomID, err)
			ok = false
		} else {
			ok = true
		}
	}
	return
}

func (user *User) tryAutomaticDoublePuppeting() {
	if !user.bridge.Config.CanAutoDoublePuppet(user.MXID) {
		return
	}
	user.log.Debugln("Checking if double puppeting needs to be enabled")
	puppet := user.bridge.GetPuppetByGMID(user.GMID)
	if len(puppet.CustomMXID) > 0 {
		user.log.Debugln("User already has double-puppeting enabled")
		// Custom puppet already enabled
		return
	}
	accessToken, err := puppet.loginWithSharedSecret(user.MXID)
	if err != nil {
		user.log.Warnln("Failed to login with shared secret:", err)
		return
	}
	err = puppet.SwitchCustomMXID(accessToken, user.MXID)
	if err != nil {
		puppet.log.Warnln("Failed to switch to auto-logined custom puppet:", err)
		return
	}
	user.log.Infoln("Successfully automatically enabled custom puppet")
}

func (user *User) sendBridgeNotice(formatString string, args ...interface{}) {
	notice := fmt.Sprintf(formatString, args...)
	_, err := user.bridge.Bot.SendNotice(user.GetManagementRoom(), notice)
	if err != nil {
		user.log.Warnf("Failed to send bridge notice \"%s\": %v", notice, err)
	}
}

func (user *User) sendMarkdownBridgeAlert(formatString string, args ...interface{}) {
	notice := fmt.Sprintf(formatString, args...)
	content := format.RenderMarkdown(notice, true, false)
	_, err := user.bridge.Bot.SendMessageEvent(user.GetManagementRoom(), event.EventMessage, content)
	if err != nil {
		user.log.Warnf("Failed to send bridge alert \"%s\": %v", notice, err)
	}
}

//func (user *User) postConnPing() bool {
//	user.log.Debugln("Making post-connection ping")
//	if !user.Conn.Connected() {
//		user.log.Errorfln("Post-connection ping failed: %v. Disconnecting and then reconnecting after a second")
//		user.bridge.Metrics.TrackDisconnection(user.MXID)
//		go func() {
//			time.Sleep(1 * time.Second)
//			user.Connect()
//		}()
//		return false
//	} else {
//		user.log.Debugln("Post-connection ping OK")
//		return true
//	}
//}

func (user *User) intPostLogin() {
	defer user.syncWait.Done()
	user.lastReconnection = time.Now().Unix()

	user.Update()

	user.tryAutomaticDoublePuppeting()

	user.log.Debugln("Waiting for chat list receive confirmation")
	user.HandleChatList()
	select {
	case <-user.chatListReceived:
		user.log.Debugln("Chat list receive confirmation received in PostLogin")
	case <-time.After(time.Duration(10000 /**user.bridge.Config.Bridge.ChatListWait**/) * time.Second):
		user.log.Warnln("Timed out waiting for chat list to arrive!")
		//user.postConnPing()
		return
	}

	user.log.Debugln("Waiting for portal sync complete confirmation")
	select {
	case <-user.syncPortalsDone:
		user.log.Debugln("Post-connection portal sync complete, unlocking processing of incoming messages.")
	// TODO this is too short, maybe a per-portal duration?
	case <-time.After(time.Duration(1000 /**user.bridge.Config.Bridge.PortalSyncWai**/) * time.Second):
		user.log.Warnln("Timed out waiting for portal sync to complete! Unlocking processing of incoming messages.")
	}
}

// Syncs chats & group messages
func (user *User) syncPortals(createAll bool) {
	user.log.Infoln("Reading chat list")

	chats := make(ChatList, 0, len(user.GroupList)+len(user.ChatList))
	portalKeys := make([]database.PortalKey, 0, cap(chats))

	for _, group := range user.GroupList {

		portal := user.bridge.GetPortalByGMID(database.GroupPortalKey(group.ID))

		chats = append(chats, Chat{
			Portal:          portal,
			LastMessageTime: uint64(group.UpdatedAt.ToTime().Unix()),
			Group:           group,
		})
	}
	for _, dm := range user.ChatList {
		portal := user.bridge.GetPortalByGMID(database.NewPortalKey(dm.OtherUser.ID, user.GMID))

		chats = append(chats, Chat{
			Portal:          portal,
			LastMessageTime: uint64(dm.UpdatedAt.ToTime().Unix()),
			DM:              dm,
		})
	}

	//for _, chat := range chats {
	//	if user.IsInSpace(chat.Portal.Key) {
	//		user.MarkInSpace(chat.Portal.Key)
	//		if chat.Portal.IsPrivateChat() {
	//			user.addPortalToSpace(chat.Portal)
	//		}
	//	}
	//
	//	portalKeys = append(portalKeys, chat.Portal.Key)
	//}
	user.log.Infoln("Read chat list, updating user-portal mapping")

	err := user.SetPortalKeys(portalKeys)
	if err != nil {
		user.log.Warnln("Failed to update user-portal mapping:", err)
	}
	sort.Sort(chats)
	limit := 5 //user.bridge.Config.Bridge.HistorySync.MaxInitialConversations
	if limit < 0 {
		limit = len(chats)
	}
	user.log.Infoln("Syncing portals")

	wg := sync.WaitGroup{}
	for i, chat := range chats {

		wg.Add(1)
		go func(chat Chat, i int) {
			create := (int64(chat.LastMessageTime) >= user.lastReconnection && user.lastReconnection > 0) || i < limit
			if len(chat.Portal.MXID) > 0 || create || createAll {
				if chat.Group != nil {
					chat.Portal.SyncGroup(user, chat.Group)
				} else {
					chat.Portal.SyncDM(user, chat.DM)
				}
				//err := chat.Portal.BackfillHistory(user, chat.LastMessageTime)
				if err != nil {
					chat.Portal.log.Errorln("Error backfilling history:", err)
				}
			}
			wg.Done()
		}(chat, i)

	}
	wg.Wait()
	//TODO: handle leave from groupme side
	user.UpdateDirectChats(nil)
	user.log.Infoln("Finished syncing portals")
	select {
	case user.syncPortalsDone <- struct{}{}:
	default:
	}
}

func (user *User) addPuppetToSpace(puppet *Puppet) bool {
	bot := user.bridge.Bot
	url := bot.BuildURL(mautrix.ClientURLPath{"groups", user.SpaceId, "admin", "users", "invite", puppet.MXID})
	blankReqBody := map[string]interface{}{}
	_, err := bot.MakeRequest(http.MethodPut, url, &blankReqBody, nil)
	if err != nil {
		user.log.Warnfln("Failed to invite %s to %s: %v", puppet.MXID, user.SpaceId, err)
		return false
	}
	reqBody := map[string]map[string]string{
		"m.visibility": {
			"type": "private",
		},
	}
	url = bot.BuildURLWithQuery(mautrix.ClientURLPath{"groups", user.SpaceId, "self", "accept_invite"}, map[string]string{
		"user_id": puppet.MXID.String(),
	})
	_, err = bot.MakeRequest(http.MethodPut, url, &reqBody, nil)
	if err != nil {
		user.log.Warnfln("Failed to join %s as %s: %v", user.SpaceId, puppet.MXID, err)
		return false
	}
	user.log.Debugln("Added", puppet.MXID, "to", user.SpaceId)
	return true
}

func (user *User) addPortalToSpace(portal *Portal) bool {
	if portal.MXID == "" {
		return false
	}
	_, err := user.bridge.Bot.SendStateEvent(user.GetSpaceRoom(), event.StateSpaceChild, portal.MXID.String(), &event.SpaceChildEventContent{
		Via: []string{user.bridge.AS.HomeserverDomain},
	})
	if err != nil {
		user.log.Errorln("Failed to add portal space. RoomId: ", portal.MXID.String())
		return false
	} else {
		return true
	}
}

func (user *User) getDirectChats() map[id.UserID][]id.RoomID {
	res := make(map[id.UserID][]id.RoomID)
	privateChats := user.bridge.DB.Portal.FindPrivateChats(user.GMID)
	for _, portal := range privateChats {
		if len(portal.MXID) > 0 {
			res[user.bridge.FormatPuppetMXID(portal.Key.GMID)] = []id.RoomID{portal.MXID}
		}
	}
	return res
}

func (user *User) getSpaceRoom(ptr *id.RoomID, name, topic string, parent id.RoomID) id.RoomID {
	if len(*ptr) > 0 {
		return *ptr
	}
	user.spaceCreateLock.Lock()
	defer user.spaceCreateLock.Unlock()
	if len(*ptr) > 0 {
		return *ptr
	}

	initialState := []*event.Event{{
		Type: event.StateRoomAvatar,
		Content: event.Content{
			Parsed: &event.RoomAvatarEventContent{
				URL: user.bridge.Config.AppService.Bot.ParsedAvatar,
			},
		},
	}}

	if parent != "" {
		parentIDStr := parent.String()
		initialState = append(initialState, &event.Event{
			Type:     event.StateSpaceParent,
			StateKey: &parentIDStr,
			Content: event.Content{
				Parsed: &event.SpaceParentEventContent{
					Canonical: true,
					Via:       []string{user.bridge.AS.HomeserverDomain},
				},
			},
		})
	}

	resp, err := user.bridge.Bot.CreateRoom(&mautrix.ReqCreateRoom{
		Visibility:   "private",
		Name:         name,
		Topic:        topic,
		InitialState: initialState,
		CreationContent: map[string]interface{}{
			"type": event.RoomTypeSpace,
		},
		PowerLevelOverride: &event.PowerLevelsEventContent{
			Users: map[id.UserID]int{
				user.bridge.Bot.UserID: 9001,
				user.MXID:              50,
			},
		},
	})

	if err != nil {
		user.log.Errorln("Failed to auto-create space room", err)
	} else {
		*ptr = resp.RoomID
		user.Update()
		user.ensureInvited(user.bridge.Bot, resp.RoomID, true)

		//if parent != "" {
		//	_, err = user.bridge.Bot.SendStateEvent(parent, event.StateSpaceChild, resp.RoomID.String(), &event.SpaceChildEventContent{
		//		Via:   []string{user.bridge.AS.HomeserverDomain},
		//		Order: " 0000",
		//	})
		//	if err != nil {
		//		user.log.Error().Err(err).
		//			Str("created_space_id", resp.RoomID.String()).
		//			Str("parent_space_id", parent.String()).
		//			Msg("Failed to add created space room to parent space")
		//	}
		//}
	}
	return *ptr
}

func (user *User) updateAvatar(gmdi groupme.ID, avatarID *string, avatarURL *id.ContentURI, avatarSet *bool,
	log log.Logger, intent *appservice.IntentAPI) bool {
	return false
}

func (user *User) runMessageRingBuffer() {
	for msg := range user.messageInput {
		select {
		case user.messageOutput <- msg:
			user.bridge.Metrics.TrackBufferLength(user.MXID, len(user.messageOutput))
		default:
			dropped := <-user.messageOutput
			user.log.Warnln("Buffer is full, dropping message in", dropped.chat)
			user.messageOutput <- msg
		}
	}
}