mautrix-whatsapp/portal.go

// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
// Copyright (C) 2021 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 main

import (
	"bytes"
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"html"
	"image"
	_ "image/gif"
	"image/jpeg"
	"image/png"
	"math"
	"mime"
	"net/http"
	"strconv"
	"strings"
	"sync"
	"time"

	"github.com/tidwall/gjson"
	"golang.org/x/image/draw"
	"golang.org/x/image/webp"
	"google.golang.org/protobuf/proto"

	log "maunium.net/go/maulogger/v2"

	"maunium.net/go/mautrix"
	"maunium.net/go/mautrix/appservice"
	"maunium.net/go/mautrix/crypto/attachment"
	"maunium.net/go/mautrix/event"
	"maunium.net/go/mautrix/format"
	"maunium.net/go/mautrix/id"
	"maunium.net/go/mautrix/util"
	"maunium.net/go/mautrix/util/ffmpeg"
	"maunium.net/go/mautrix/util/variationselector"

	"go.mau.fi/whatsmeow"
	waProto "go.mau.fi/whatsmeow/binary/proto"
	"go.mau.fi/whatsmeow/types"
	"go.mau.fi/whatsmeow/types/events"

	"maunium.net/go/mautrix-whatsapp/database"
)

const StatusBroadcastTopic = "WhatsApp status updates from your contacts"
const StatusBroadcastName = "WhatsApp Status Broadcast"
const BroadcastTopic = "WhatsApp broadcast list"
const UnnamedBroadcastName = "Unnamed broadcast list"
const PrivateChatTopic = "WhatsApp private chat"

var ErrStatusBroadcastDisabled = errors.New("status bridging is disabled")

func (bridge *Bridge) GetPortalByMXID(mxid id.RoomID) *Portal {
	bridge.portalsLock.Lock()
	defer bridge.portalsLock.Unlock()
	portal, ok := bridge.portalsByMXID[mxid]
	if !ok {
		return bridge.loadDBPortal(bridge.DB.Portal.GetByMXID(mxid), nil)
	}
	return portal
}

func (bridge *Bridge) GetPortalByJID(key database.PortalKey) *Portal {
	bridge.portalsLock.Lock()
	defer bridge.portalsLock.Unlock()
	portal, ok := bridge.portalsByJID[key]
	if !ok {
		return bridge.loadDBPortal(bridge.DB.Portal.GetByJID(key), &key)
	}
	return portal
}

func (bridge *Bridge) GetAllPortals() []*Portal {
	return bridge.dbPortalsToPortals(bridge.DB.Portal.GetAll())
}

func (bridge *Bridge) GetAllPortalsForUser(userID id.UserID) []*Portal {
	return bridge.dbPortalsToPortals(bridge.DB.Portal.GetAllForUser(userID))
}

func (bridge *Bridge) GetAllPortalsByJID(jid types.JID) []*Portal {
	return bridge.dbPortalsToPortals(bridge.DB.Portal.GetAllByJID(jid))
}

func (bridge *Bridge) dbPortalsToPortals(dbPortals []*database.Portal) []*Portal {
	bridge.portalsLock.Lock()
	defer bridge.portalsLock.Unlock()
	output := make([]*Portal, len(dbPortals))
	for index, dbPortal := range dbPortals {
		if dbPortal == nil {
			continue
		}
		portal, ok := bridge.portalsByJID[dbPortal.Key]
		if !ok {
			portal = bridge.loadDBPortal(dbPortal, nil)
		}
		output[index] = portal
	}
	return output
}

func (bridge *Bridge) loadDBPortal(dbPortal *database.Portal, key *database.PortalKey) *Portal {
	if dbPortal == nil {
		if key == nil {
			return nil
		}
		dbPortal = bridge.DB.Portal.New()
		dbPortal.Key = *key
		dbPortal.Insert()
	}
	portal := bridge.NewPortal(dbPortal)
	bridge.portalsByJID[portal.Key] = portal
	if len(portal.MXID) > 0 {
		bridge.portalsByMXID[portal.MXID] = portal
	}
	return portal
}

func (portal *Portal) GetUsers() []*User {
	return nil
}

func (bridge *Bridge) newBlankPortal(key database.PortalKey) *Portal {
	portal := &Portal{
		bridge: bridge,
		log:    bridge.Log.Sub(fmt.Sprintf("Portal/%s", key)),

		messages:       make(chan PortalMessage, bridge.Config.Bridge.PortalMessageBuffer),
		receipts:       make(chan PortalReceipt, bridge.Config.Bridge.PortalMessageBuffer),
		matrixMessages: make(chan PortalMatrixMessage, bridge.Config.Bridge.PortalMessageBuffer),
		mediaRetries:   make(chan PortalMediaRetry, bridge.Config.Bridge.PortalMessageBuffer),

		mediaErrorCache: make(map[types.MessageID]*FailedMediaMeta),
	}
	go portal.handleMessageLoop()
	return portal
}

func (bridge *Bridge) NewManualPortal(key database.PortalKey) *Portal {
	portal := bridge.newBlankPortal(key)
	portal.Portal = bridge.DB.Portal.New()
	portal.Key = key
	return portal
}

func (bridge *Bridge) NewPortal(dbPortal *database.Portal) *Portal {
	portal := bridge.newBlankPortal(dbPortal.Key)
	portal.Portal = dbPortal
	return portal
}

const recentlyHandledLength = 100

type fakeMessage struct {
	Sender    types.JID
	Text      string
	ID        string
	Time      time.Time
	Important bool
}

type PortalMessage struct {
	evt           *events.Message
	undecryptable *events.UndecryptableMessage
	fake          *fakeMessage
	source        *User
}

type PortalReceipt struct {
	evt    *events.Receipt
	source *User
}

type PortalMatrixMessage struct {
	evt  *event.Event
	user *User
}

type PortalMediaRetry struct {
	evt    *events.MediaRetry
	source *User
}

type recentlyHandledWrapper struct {
	id  types.MessageID
	err database.MessageErrorType
}

type Portal struct {
	*database.Portal

	bridge *Bridge
	log    log.Logger

	roomCreateLock sync.Mutex
	encryptLock    sync.Mutex
	backfillLock   sync.Mutex
	avatarLock     sync.Mutex

	recentlyHandled      [recentlyHandledLength]recentlyHandledWrapper
	recentlyHandledLock  sync.Mutex
	recentlyHandledIndex uint8

	privateChatBackfillInvitePuppet func()

	currentlyTyping     []id.UserID
	currentlyTypingLock sync.Mutex

	messages       chan PortalMessage
	receipts       chan PortalReceipt
	matrixMessages chan PortalMatrixMessage
	mediaRetries   chan PortalMediaRetry

	mediaErrorCache map[types.MessageID]*FailedMediaMeta

	relayUser *User
}

func (portal *Portal) handleMessageLoopItem(msg PortalMessage) {
	if len(portal.MXID) == 0 {
		if msg.fake == nil && msg.undecryptable == nil && (msg.evt == nil || !containsSupportedMessage(msg.evt.Message)) {
			portal.log.Debugln("Not creating portal room for incoming message: message is not a chat message")
			return
		}
		portal.log.Debugln("Creating Matrix room from incoming message")
		err := portal.CreateMatrixRoom(msg.source, nil, false, true)
		if err != nil {
			portal.log.Errorln("Failed to create portal room:", err)
			return
		}
	}
	if msg.evt != nil {
		portal.handleMessage(msg.source, msg.evt)
	} else if msg.undecryptable != nil {
		portal.handleUndecryptableMessage(msg.source, msg.undecryptable)
	} else if msg.fake != nil {
		msg.fake.ID = "FAKE::" + msg.fake.ID
		portal.handleFakeMessage(*msg.fake)
	} else {
		portal.log.Warnln("Unexpected PortalMessage with no message: %+v", msg)
	}
}

func (portal *Portal) handleMatrixMessageLoopItem(msg PortalMatrixMessage) {
	portal.HandleMatrixReadReceipt(msg.user, "", time.UnixMilli(msg.evt.Timestamp), false)
	switch msg.evt.Type {
	case event.EventMessage, event.EventSticker:
		portal.HandleMatrixMessage(msg.user, msg.evt)
	case event.EventRedaction:
		portal.HandleMatrixRedaction(msg.user, msg.evt)
	default:
		portal.log.Warnln("Unsupported event type %+v in portal message channel", msg.evt.Type)
	}
}

func (portal *Portal) handleReceipt(receipt *events.Receipt, source *User) {
	// The order of the message ID array depends on the sender's platform, so we just have to find
	// the last message based on timestamp. Also, timestamps only have second precision, so if
	// there are many messages at the same second just mark them all as read, because we don't
	// know which one is last
	markAsRead := make([]*database.Message, 0, 1)
	var bestTimestamp time.Time
	for _, msgID := range receipt.MessageIDs {
		msg := portal.bridge.DB.Message.GetByJID(portal.Key, msgID)
		if msg == nil || msg.IsFakeMXID() {
			continue
		}
		if msg.Timestamp.After(bestTimestamp) {
			bestTimestamp = msg.Timestamp
			markAsRead = append(markAsRead[:0], msg)
		} else if msg != nil && msg.Timestamp.Equal(bestTimestamp) {
			markAsRead = append(markAsRead, msg)
		}
	}
	if receipt.Sender.User == source.JID.User {
		if len(markAsRead) > 0 {
			source.SetLastReadTS(portal.Key, markAsRead[0].Timestamp)
		} else {
			source.SetLastReadTS(portal.Key, receipt.Timestamp)
		}
	}
	intent := portal.bridge.GetPuppetByJID(receipt.Sender).IntentFor(portal)
	for _, msg := range markAsRead {
		err := intent.SetReadMarkers(portal.MXID, makeReadMarkerContent(msg.MXID, intent.IsCustomPuppet))
		if err != nil {
			portal.log.Warnfln("Failed to mark message %s as read by %s: %v", msg.MXID, intent.UserID, err)
		} else {
			portal.log.Debugfln("Marked %s as read by %s", msg.MXID, intent.UserID)
		}
	}
}

func (portal *Portal) handleMessageLoop() {
	for {
		select {
		case msg := <-portal.messages:
			portal.handleMessageLoopItem(msg)
		case receipt := <-portal.receipts:
			portal.handleReceipt(receipt.evt, receipt.source)
		case msg := <-portal.matrixMessages:
			portal.handleMatrixMessageLoopItem(msg)
		case retry := <-portal.mediaRetries:
			portal.handleMediaRetry(retry.evt, retry.source)
		}
	}
}

func containsSupportedMessage(waMsg *waProto.Message) bool {
	if waMsg == nil {
		return false
	}
	return waMsg.Conversation != nil || waMsg.ExtendedTextMessage != nil || waMsg.ImageMessage != nil ||
		waMsg.StickerMessage != nil || waMsg.AudioMessage != nil || waMsg.VideoMessage != nil ||
		waMsg.DocumentMessage != nil || waMsg.ContactMessage != nil || waMsg.LocationMessage != nil ||
		waMsg.LiveLocationMessage != nil || waMsg.GroupInviteMessage != nil || waMsg.ContactsArrayMessage != nil
}

func getMessageType(waMsg *waProto.Message) string {
	switch {
	case waMsg == nil:
		return "ignore"
	case waMsg.Conversation != nil, waMsg.ExtendedTextMessage != nil:
		return "text"
	case waMsg.ImageMessage != nil:
		return fmt.Sprintf("image %s", waMsg.GetImageMessage().GetMimetype())
	case waMsg.StickerMessage != nil:
		return fmt.Sprintf("sticker %s", waMsg.GetStickerMessage().GetMimetype())
	case waMsg.VideoMessage != nil:
		return fmt.Sprintf("video %s", waMsg.GetVideoMessage().GetMimetype())
	case waMsg.AudioMessage != nil:
		return fmt.Sprintf("audio %s", waMsg.GetAudioMessage().GetMimetype())
	case waMsg.DocumentMessage != nil:
		return fmt.Sprintf("document %s", waMsg.GetDocumentMessage().GetMimetype())
	case waMsg.ContactMessage != nil:
		return "contact"
	case waMsg.ContactsArrayMessage != nil:
		return "contact array"
	case waMsg.LocationMessage != nil:
		return "location"
	case waMsg.LiveLocationMessage != nil:
		return "live location start"
	case waMsg.GroupInviteMessage != nil:
		return "group invite"
	case waMsg.ReactionMessage != nil:
		return "reaction"
	case waMsg.ProtocolMessage != nil:
		switch waMsg.GetProtocolMessage().GetType() {
		case waProto.ProtocolMessage_REVOKE:
			if waMsg.GetProtocolMessage().GetKey() == nil {
				return "ignore"
			}
			return "revoke"
		case waProto.ProtocolMessage_EPHEMERAL_SETTING:
			return "disappearing timer change"
		case waProto.ProtocolMessage_APP_STATE_SYNC_KEY_SHARE, waProto.ProtocolMessage_HISTORY_SYNC_NOTIFICATION, waProto.ProtocolMessage_INITIAL_SECURITY_NOTIFICATION_SETTING_SYNC:
			return "ignore"
		default:
			return fmt.Sprintf("unknown_protocol_%d", waMsg.GetProtocolMessage().GetType())
		}
	case waMsg.ButtonsMessage != nil:
		return "buttons"
	case waMsg.ButtonsResponseMessage != nil:
		return "buttons response"
	case waMsg.TemplateMessage != nil:
		return "template"
	case waMsg.HighlyStructuredMessage != nil:
		return "highly structured template"
	case waMsg.TemplateButtonReplyMessage != nil:
		return "template button reply"
	case waMsg.InteractiveMessage != nil:
		return "interactive"
	case waMsg.ListMessage != nil:
		return "list"
	case waMsg.ProductMessage != nil:
		return "product"
	case waMsg.ListResponseMessage != nil:
		return "list response"
	case waMsg.OrderMessage != nil:
		return "order"
	case waMsg.InvoiceMessage != nil:
		return "invoice"
	case waMsg.SendPaymentMessage != nil, waMsg.RequestPaymentMessage != nil,
		waMsg.DeclinePaymentRequestMessage != nil, waMsg.CancelPaymentRequestMessage != nil,
		waMsg.PaymentInviteMessage != nil:
		return "payment"
	case waMsg.Call != nil:
		return "call"
	case waMsg.Chat != nil:
		return "chat"
	case waMsg.SenderKeyDistributionMessage != nil, waMsg.StickerSyncRmrMessage != nil:
		return "ignore"
	default:
		return "unknown"
	}
}

func pluralUnit(val int, name string) string {
	if val == 1 {
		return fmt.Sprintf("%d %s", val, name)
	} else if val == 0 {
		return ""
	}
	return fmt.Sprintf("%d %ss", val, name)
}

func naturalJoin(parts []string) string {
	if len(parts) == 0 {
		return ""
	} else if len(parts) == 1 {
		return parts[0]
	} else if len(parts) == 2 {
		return fmt.Sprintf("%s and %s", parts[0], parts[1])
	} else {
		return fmt.Sprintf("%s and %s", strings.Join(parts[:len(parts)-1], ", "), parts[len(parts)-1])
	}
}

func formatDuration(d time.Duration) string {
	const Day = time.Hour * 24

	var days, hours, minutes, seconds int
	days, d = int(d/Day), d%Day
	hours, d = int(d/time.Hour), d%time.Hour
	minutes, d = int(d/time.Minute), d%time.Minute
	seconds = int(d / time.Second)

	parts := make([]string, 0, 4)
	if days > 0 {
		parts = append(parts, pluralUnit(days, "day"))
	}
	if hours > 0 {
		parts = append(parts, pluralUnit(hours, "hour"))
	}
	if minutes > 0 {
		parts = append(parts, pluralUnit(seconds, "minute"))
	}
	if seconds > 0 {
		parts = append(parts, pluralUnit(seconds, "second"))
	}
	return naturalJoin(parts)
}

func (portal *Portal) convertMessage(intent *appservice.IntentAPI, source *User, info *types.MessageInfo, waMsg *waProto.Message) *ConvertedMessage {
	switch {
	case waMsg.Conversation != nil || waMsg.ExtendedTextMessage != nil:
		return portal.convertTextMessage(intent, source, waMsg)
	case waMsg.ImageMessage != nil:
		return portal.convertMediaMessage(intent, source, info, waMsg.GetImageMessage())
	case waMsg.StickerMessage != nil:
		return portal.convertMediaMessage(intent, source, info, waMsg.GetStickerMessage())
	case waMsg.VideoMessage != nil:
		return portal.convertMediaMessage(intent, source, info, waMsg.GetVideoMessage())
	case waMsg.AudioMessage != nil:
		return portal.convertMediaMessage(intent, source, info, waMsg.GetAudioMessage())
	case waMsg.DocumentMessage != nil:
		return portal.convertMediaMessage(intent, source, info, waMsg.GetDocumentMessage())
	case waMsg.ContactMessage != nil:
		return portal.convertContactMessage(intent, waMsg.GetContactMessage())
	case waMsg.ContactsArrayMessage != nil:
		return portal.convertContactsArrayMessage(intent, waMsg.GetContactsArrayMessage())
	case waMsg.LocationMessage != nil:
		return portal.convertLocationMessage(intent, waMsg.GetLocationMessage())
	case waMsg.LiveLocationMessage != nil:
		return portal.convertLiveLocationMessage(intent, waMsg.GetLiveLocationMessage())
	case waMsg.GroupInviteMessage != nil:
		return portal.convertGroupInviteMessage(intent, info, waMsg.GetGroupInviteMessage())
	case waMsg.ProtocolMessage != nil && waMsg.ProtocolMessage.GetType() == waProto.ProtocolMessage_EPHEMERAL_SETTING:
		portal.ExpirationTime = waMsg.ProtocolMessage.GetEphemeralExpiration()
		portal.Update()
		return &ConvertedMessage{
			Intent: intent,
			Type:   event.EventMessage,
			Content: &event.MessageEventContent{
				Body:    portal.formatDisappearingMessageNotice(),
				MsgType: event.MsgNotice,
			},
		}
	default:
		return nil
	}
}

func (portal *Portal) UpdateGroupDisappearingMessages(sender *types.JID, timestamp time.Time, timer uint32) {
	portal.ExpirationTime = timer
	portal.Update()
	intent := portal.MainIntent()
	if sender != nil {
		intent = portal.bridge.GetPuppetByJID(sender.ToNonAD()).IntentFor(portal)
	} else {
		sender = &types.EmptyJID
	}
	_, err := portal.sendMessage(intent, event.EventMessage, &event.MessageEventContent{
		Body:    portal.formatDisappearingMessageNotice(),
		MsgType: event.MsgNotice,
	}, nil, timestamp.UnixMilli())
	if err != nil {
		portal.log.Warnfln("Failed to notify portal about disappearing message timer change by %s to %d", *sender, timer)
	}
}

func (portal *Portal) formatDisappearingMessageNotice() string {
	if portal.ExpirationTime == 0 {
		return "Turned off disappearing messages"
	} else {
		msg := fmt.Sprintf("Set the disappearing message timer to %s", formatDuration(time.Duration(portal.ExpirationTime)*time.Second))
		if !portal.bridge.Config.Bridge.DisappearingMessagesInGroups && portal.IsGroupChat() {
			msg += ". However, this bridge is not configured to disappear messages in group chats."
		}
		return msg
	}
}

const UndecryptableMessageNotice = "Decrypting message from WhatsApp failed, waiting for sender to re-send... " +
	"([learn more](https://faq.whatsapp.com/general/security-and-privacy/seeing-waiting-for-this-message-this-may-take-a-while))"

var undecryptableMessageContent event.MessageEventContent

func init() {
	undecryptableMessageContent = format.RenderMarkdown(UndecryptableMessageNotice, true, false)
	undecryptableMessageContent.MsgType = event.MsgNotice
}

func (portal *Portal) handleUndecryptableMessage(source *User, evt *events.UndecryptableMessage) {
	if len(portal.MXID) == 0 {
		portal.log.Warnln("handleUndecryptableMessage called even though portal.MXID is empty")
		return
	} else if portal.isRecentlyHandled(evt.Info.ID, database.MsgErrDecryptionFailed) {
		portal.log.Debugfln("Not handling %s (undecryptable): message was recently handled", evt.Info.ID)
		return
	} else if existingMsg := portal.bridge.DB.Message.GetByJID(portal.Key, evt.Info.ID); existingMsg != nil {
		portal.log.Debugfln("Not handling %s (undecryptable): message is duplicate", evt.Info.ID)
		return
	}
	intent := portal.getMessageIntent(source, &evt.Info)
	if !intent.IsCustomPuppet && portal.IsPrivateChat() && evt.Info.Sender.User == portal.Key.Receiver.User {
		portal.log.Debugfln("Not handling %s (undecryptable): user doesn't have double puppeting enabled", evt.Info.ID)
		return
	}
	content := undecryptableMessageContent
	resp, err := portal.sendMessage(intent, event.EventMessage, &content, nil, evt.Info.Timestamp.UnixMilli())
	if err != nil {
		portal.log.Errorln("Failed to send decryption error of %s to Matrix: %v", evt.Info.ID, err)
		return
	}
	portal.finishHandling(nil, &evt.Info, resp.EventID, database.MsgUnknown, database.MsgErrDecryptionFailed)
}

func (portal *Portal) handleFakeMessage(msg fakeMessage) {
	if portal.isRecentlyHandled(msg.ID, database.MsgNoError) {
		portal.log.Debugfln("Not handling %s (fake): message was recently handled", msg.ID)
		return
	} else if existingMsg := portal.bridge.DB.Message.GetByJID(portal.Key, msg.ID); existingMsg != nil {
		portal.log.Debugfln("Not handling %s (fake): message is duplicate", msg.ID)
		return
	}
	intent := portal.bridge.GetPuppetByJID(msg.Sender).IntentFor(portal)
	if !intent.IsCustomPuppet && portal.IsPrivateChat() && msg.Sender.User == portal.Key.Receiver.User {
		portal.log.Debugfln("Not handling %s (fake): user doesn't have double puppeting enabled", msg.ID)
		return
	}
	msgType := event.MsgNotice
	if msg.Important {
		msgType = event.MsgText
	}
	resp, err := portal.sendMessage(intent, event.EventMessage, &event.MessageEventContent{
		MsgType: msgType,
		Body:    msg.Text,
	}, nil, msg.Time.UnixMilli())
	if err != nil {
		portal.log.Errorfln("Failed to send %s to Matrix: %v", msg.ID, err)
	} else {
		portal.finishHandling(nil, &types.MessageInfo{
			ID:        msg.ID,
			Timestamp: msg.Time,
			MessageSource: types.MessageSource{
				Sender: msg.Sender,
			},
		}, resp.EventID, database.MsgFake, database.MsgNoError)
	}
}

func (portal *Portal) handleMessage(source *User, evt *events.Message) {
	if len(portal.MXID) == 0 {
		portal.log.Warnln("handleMessage called even though portal.MXID is empty")
		return
	}
	msgID := evt.Info.ID
	msgType := getMessageType(evt.Message)
	if msgType == "ignore" {
		return
	} else if portal.isRecentlyHandled(msgID, database.MsgNoError) {
		portal.log.Debugfln("Not handling %s (%s): message was recently handled", msgID, msgType)
		return
	}
	existingMsg := portal.bridge.DB.Message.GetByJID(portal.Key, msgID)
	if existingMsg != nil {
		if existingMsg.Error == database.MsgErrDecryptionFailed {
			portal.log.Debugfln("Got decryptable version of previously undecryptable message %s (%s)", msgID, msgType)
		} else {
			portal.log.Debugfln("Not handling %s (%s): message is duplicate", msgID, msgType)
			return
		}
	}

	intent := portal.getMessageIntent(source, &evt.Info)
	if !intent.IsCustomPuppet && portal.IsPrivateChat() && evt.Info.Sender.User == portal.Key.Receiver.User {
		portal.log.Debugfln("Not handling %s (%s): user doesn't have double puppeting enabled", msgID, msgType)
		return
	}
	converted := portal.convertMessage(intent, source, &evt.Info, evt.Message)
	if converted != nil {
		if evt.Info.IsIncomingBroadcast() {
			if converted.Extra == nil {
				converted.Extra = map[string]interface{}{}
			}
			converted.Extra["fi.mau.whatsapp.source_broadcast_list"] = evt.Info.Chat.String()
		}
		var eventID id.EventID
		if existingMsg != nil {
			portal.MarkDisappearing(existingMsg.MXID, converted.ExpiresIn, false)
			converted.Content.SetEdit(existingMsg.MXID)
		} else if len(converted.ReplyTo) > 0 {
			portal.SetReply(converted.Content, converted.ReplyTo)
		}
		resp, err := portal.sendMessage(converted.Intent, converted.Type, converted.Content, converted.Extra, evt.Info.Timestamp.UnixMilli())
		if err != nil {
			portal.log.Errorfln("Failed to send %s to Matrix: %v", msgID, err)
		} else {
			portal.MarkDisappearing(resp.EventID, converted.ExpiresIn, false)
			eventID = resp.EventID
		}
		// TODO figure out how to handle captions with undecryptable messages turning decryptable
		if converted.Caption != nil && existingMsg == nil {
			resp, err = portal.sendMessage(converted.Intent, converted.Type, converted.Caption, nil, evt.Info.Timestamp.UnixMilli())
			if err != nil {
				portal.log.Errorfln("Failed to send caption of %s to Matrix: %v", msgID, err)
			} else {
				portal.MarkDisappearing(resp.EventID, converted.ExpiresIn, false)
				//eventID = resp.EventID
			}
		}
		if converted.MultiEvent != nil && existingMsg == nil {
			for index, subEvt := range converted.MultiEvent {
				resp, err = portal.sendMessage(converted.Intent, converted.Type, subEvt, nil, evt.Info.Timestamp.UnixMilli())
				if err != nil {
					portal.log.Errorfln("Failed to send sub-event %d of %s to Matrix: %v", index+1, msgID, err)
				} else {
					portal.MarkDisappearing(resp.EventID, converted.ExpiresIn, false)
				}
			}
		}
		if len(eventID) != 0 {
			portal.finishHandling(existingMsg, &evt.Info, eventID, database.MsgNormal, converted.Error)
		}
	} else if msgType == "reaction" {
		portal.HandleMessageReaction(intent, source, &evt.Info, evt.Message.GetReactionMessage(), existingMsg)
	} else if msgType == "revoke" {
		portal.HandleMessageRevoke(source, &evt.Info, evt.Message.GetProtocolMessage().GetKey())
		if existingMsg != nil {
			_, _ = portal.MainIntent().RedactEvent(portal.MXID, existingMsg.MXID, mautrix.ReqRedact{
				Reason: "The undecryptable message was actually the deletion of another message",
			})
			existingMsg.UpdateMXID("net.maunium.whatsapp.fake::"+existingMsg.MXID, database.MsgFake, database.MsgNoError)
		}
	} else {
		portal.log.Warnfln("Unhandled message: %+v (%s)", evt.Info, msgType)
		if existingMsg != nil {
			_, _ = portal.MainIntent().RedactEvent(portal.MXID, existingMsg.MXID, mautrix.ReqRedact{
				Reason: "The undecryptable message contained an unsupported message type",
			})
			existingMsg.UpdateMXID("net.maunium.whatsapp.fake::"+existingMsg.MXID, database.MsgFake, database.MsgNoError)
		}
		return
	}
	portal.bridge.Metrics.TrackWhatsAppMessage(evt.Info.Timestamp, strings.Split(msgType, " ")[0])
}

func (portal *Portal) isRecentlyHandled(id types.MessageID, error database.MessageErrorType) bool {
	start := portal.recentlyHandledIndex
	lookingForMsg := recentlyHandledWrapper{id, error}
	for i := start; i != start; i = (i - 1) % recentlyHandledLength {
		if portal.recentlyHandled[i] == lookingForMsg {
			return true
		}
	}
	return false
}

func (portal *Portal) markHandled(msg *database.Message, info *types.MessageInfo, mxid id.EventID, isSent, recent bool, msgType database.MessageType, error database.MessageErrorType) *database.Message {
	if msg == nil {
		msg = portal.bridge.DB.Message.New()
		msg.Chat = portal.Key
		msg.JID = info.ID
		msg.MXID = mxid
		msg.Timestamp = info.Timestamp
		msg.Sender = info.Sender
		msg.Sent = isSent
		msg.Type = msgType
		msg.Error = error
		if info.IsIncomingBroadcast() {
			msg.BroadcastListJID = info.Chat
		}
		msg.Insert()
	} else {
		msg.UpdateMXID(mxid, msgType, error)
	}

	if recent {
		portal.recentlyHandledLock.Lock()
		index := portal.recentlyHandledIndex
		portal.recentlyHandledIndex = (portal.recentlyHandledIndex + 1) % recentlyHandledLength
		portal.recentlyHandledLock.Unlock()
		portal.recentlyHandled[index] = recentlyHandledWrapper{msg.JID, error}
	}
	return msg
}

func (portal *Portal) getMessagePuppet(user *User, info *types.MessageInfo) *Puppet {
	if info.IsFromMe {
		return portal.bridge.GetPuppetByJID(user.JID)
	} else if portal.IsPrivateChat() {
		return portal.bridge.GetPuppetByJID(portal.Key.JID)
	} else {
		puppet := portal.bridge.GetPuppetByJID(info.Sender)
		puppet.SyncContact(user, true, "handling message")
		return puppet
	}
}

func (portal *Portal) getMessageIntent(user *User, info *types.MessageInfo) *appservice.IntentAPI {
	return portal.getMessagePuppet(user, info).IntentFor(portal)
}

func (portal *Portal) finishHandling(existing *database.Message, message *types.MessageInfo, mxid id.EventID, msgType database.MessageType, error database.MessageErrorType) {
	portal.markHandled(existing, message, mxid, true, true, msgType, error)
	portal.sendDeliveryReceipt(mxid)
	var suffix string
	if error == database.MsgErrDecryptionFailed {
		suffix = "(undecryptable message error notice)"
	} else if error == database.MsgErrMediaNotFound {
		suffix = "(media not found notice)"
	}
	portal.log.Debugfln("Handled message %s (%s) -> %s %s", message.ID, msgType, mxid, suffix)
}

func (portal *Portal) kickExtraUsers(participantMap map[types.JID]bool) {
	members, err := portal.MainIntent().JoinedMembers(portal.MXID)
	if err != nil {
		portal.log.Warnln("Failed to get member list:", err)
		return
	}
	for member := range members.Joined {
		jid, ok := portal.bridge.ParsePuppetMXID(member)
		if ok {
			_, shouldBePresent := participantMap[jid]
			if !shouldBePresent {
				_, err = portal.MainIntent().KickUser(portal.MXID, &mautrix.ReqKickUser{
					UserID: member,
					Reason: "User had left this WhatsApp chat",
				})
				if err != nil {
					portal.log.Warnfln("Failed to kick user %s who had left: %v", member, err)
				}
			}
		}
	}
}

//func (portal *Portal) SyncBroadcastRecipients(source *User, metadata *whatsapp.BroadcastListInfo) {
//	participantMap := make(map[whatsapp.JID]bool)
//	for _, recipient := range metadata.Recipients {
//		participantMap[recipient.JID] = true
//
//		puppet := portal.bridge.GetPuppetByJID(recipient.JID)
//		puppet.SyncContactIfNecessary(source)
//		err := puppet.DefaultIntent().EnsureJoined(portal.MXID)
//		if err != nil {
//			portal.log.Warnfln("Failed to make puppet of %s join %s: %v", recipient.JID, portal.MXID, err)
//		}
//	}
//	portal.kickExtraUsers(participantMap)
//}

func (portal *Portal) SyncParticipants(source *User, metadata *types.GroupInfo) {
	changed := false
	levels, err := portal.MainIntent().PowerLevels(portal.MXID)
	if err != nil {
		levels = portal.GetBasePowerLevels()
		changed = true
	}
	participantMap := make(map[types.JID]bool)
	for _, participant := range metadata.Participants {
		participantMap[participant.JID] = true
		puppet := portal.bridge.GetPuppetByJID(participant.JID)
		puppet.SyncContact(source, true, "group participant")
		user := portal.bridge.GetUserByJID(participant.JID)
		if user != nil && user != source {
			portal.ensureUserInvited(user)
		}
		if user == nil || !puppet.IntentFor(portal).IsCustomPuppet {
			err = puppet.IntentFor(portal).EnsureJoined(portal.MXID)
			if err != nil {
				portal.log.Warnfln("Failed to make puppet of %s join %s: %v", participant.JID, portal.MXID, err)
			}
		}

		expectedLevel := 0
		if participant.IsSuperAdmin {
			expectedLevel = 95
		} else if participant.IsAdmin {
			expectedLevel = 50
		}
		changed = levels.EnsureUserLevel(puppet.MXID, expectedLevel) || changed
		if user != nil {
			changed = levels.EnsureUserLevel(user.MXID, expectedLevel) || changed
		}
	}
	if changed {
		_, err = portal.MainIntent().SetPowerLevels(portal.MXID, levels)
		if err != nil {
			portal.log.Errorln("Failed to change power levels:", err)
		}
	}
	portal.kickExtraUsers(participantMap)
}

func (portal *Portal) UpdateAvatar(user *User, setBy types.JID, updateInfo bool) bool {
	portal.avatarLock.Lock()
	defer portal.avatarLock.Unlock()
	avatar, err := user.Client.GetProfilePictureInfo(portal.Key.JID, false)
	if err != nil {
		if !errors.Is(err, whatsmeow.ErrProfilePictureUnauthorized) {
			portal.log.Warnln("Failed to get avatar URL:", err)
		}
		return false
	} else if avatar == nil {
		if portal.Avatar == "remove" {
			return false
		}
		portal.AvatarURL = id.ContentURI{}
		avatar = &types.ProfilePictureInfo{ID: "remove"}
	} else if avatar.ID == portal.Avatar {
		return false
	} else if len(avatar.URL) == 0 {
		portal.log.Warnln("Didn't get URL in response to avatar query")
		return false
	} else {
		url, err := reuploadAvatar(portal.MainIntent(), avatar.URL)
		if err != nil {
			portal.log.Warnln("Failed to reupload avatar:", err)
			return false
		}
		portal.AvatarURL = url
	}

	if len(portal.MXID) > 0 {
		intent := portal.MainIntent()
		if !setBy.IsEmpty() {
			intent = portal.bridge.GetPuppetByJID(setBy).IntentFor(portal)
		}
		_, err = intent.SetRoomAvatar(portal.MXID, portal.AvatarURL)
		if errors.Is(err, mautrix.MForbidden) && intent != portal.MainIntent() {
			_, err = portal.MainIntent().SetRoomAvatar(portal.MXID, portal.AvatarURL)
		}
		if err != nil {
			portal.log.Warnln("Failed to set room avatar:", err)
			return false
		}
	}
	portal.Avatar = avatar.ID
	if updateInfo {
		portal.UpdateBridgeInfo()
	}
	return true
}

func (portal *Portal) UpdateName(name string, setBy types.JID, updateInfo bool) bool {
	if name == "" && portal.IsBroadcastList() {
		name = UnnamedBroadcastName
	}
	if portal.Name != name {
		portal.log.Debugfln("Updating name %s -> %s", portal.Name, name)
		portal.Name = name

		intent := portal.MainIntent()
		if !setBy.IsEmpty() {
			intent = portal.bridge.GetPuppetByJID(setBy).IntentFor(portal)
		}
		_, err := intent.SetRoomName(portal.MXID, name)
		if errors.Is(err, mautrix.MForbidden) && intent != portal.MainIntent() {
			_, err = portal.MainIntent().SetRoomName(portal.MXID, name)
		}
		if err == nil {
			if updateInfo {
				portal.UpdateBridgeInfo()
			}
			return true
		} else {
			portal.Name = ""
			portal.log.Warnln("Failed to set room name:", err)
		}
	}
	return false
}

func (portal *Portal) UpdateTopic(topic string, setBy types.JID, updateInfo bool) bool {
	if portal.Topic != topic {
		portal.log.Debugfln("Updating topic %s -> %s", portal.Topic, topic)
		portal.Topic = topic

		intent := portal.MainIntent()
		if !setBy.IsEmpty() {
			intent = portal.bridge.GetPuppetByJID(setBy).IntentFor(portal)
		}
		_, err := intent.SetRoomTopic(portal.MXID, topic)
		if errors.Is(err, mautrix.MForbidden) && intent != portal.MainIntent() {
			_, err = portal.MainIntent().SetRoomTopic(portal.MXID, topic)
		}
		if err == nil {
			if updateInfo {
				portal.UpdateBridgeInfo()
			}
			return true
		} else {
			portal.Topic = ""
			portal.log.Warnln("Failed to set room topic:", err)
		}
	}
	return false
}

func (portal *Portal) UpdateMetadata(user *User, groupInfo *types.GroupInfo) bool {
	if portal.IsPrivateChat() {
		return false
	} else if portal.IsStatusBroadcastList() {
		update := false
		update = portal.UpdateName(StatusBroadcastName, types.EmptyJID, false) || update
		update = portal.UpdateTopic(StatusBroadcastTopic, types.EmptyJID, false) || update
		return update
	} else if portal.IsBroadcastList() {
		update := false
		//broadcastMetadata, err := user.Conn.GetBroadcastMetadata(portal.Key.JID)
		//if err == nil && broadcastMetadata.Status == 200 {
		//	portal.SyncBroadcastRecipients(user, broadcastMetadata)
		//	update = portal.UpdateName(broadcastMetadata.Name, "", nil, false) || update
		//} else {
		//	user.Conn.Store.ContactsLock.RLock()
		//	contact, _ := user.Conn.Store.Contacts[portal.Key.JID]
		//	user.Conn.Store.ContactsLock.RUnlock()
		//	update = portal.UpdateName(contact.Name, "", nil, false) || update
		//}
		//update = portal.UpdateTopic(BroadcastTopic, "", nil, false) || update
		return update
	}
	if groupInfo == nil {
		var err error
		groupInfo, err = user.Client.GetGroupInfo(portal.Key.JID)
		if err != nil {
			portal.log.Errorln("Failed to get group info:", err)
			return false
		}
	}

	portal.SyncParticipants(user, groupInfo)
	update := false
	update = portal.UpdateName(groupInfo.Name, groupInfo.NameSetBy, false) || update
	update = portal.UpdateTopic(groupInfo.Topic, groupInfo.TopicSetBy, false) || update
	if portal.ExpirationTime != groupInfo.DisappearingTimer {
		update = true
		portal.ExpirationTime = groupInfo.DisappearingTimer
	}

	portal.RestrictMessageSending(groupInfo.IsAnnounce)
	portal.RestrictMetadataChanges(groupInfo.IsLocked)

	return update
}

func (portal *Portal) ensureMXIDInvited(mxid id.UserID) {
	err := portal.MainIntent().EnsureInvited(portal.MXID, mxid)
	if err != nil {
		portal.log.Warnfln("Failed to ensure %s is invited to %s: %v", mxid, portal.MXID, err)
	}
}

func (portal *Portal) ensureUserInvited(user *User) bool {
	return user.ensureInvited(portal.MainIntent(), portal.MXID, portal.IsPrivateChat())
}

func (portal *Portal) UpdateMatrixRoom(user *User, groupInfo *types.GroupInfo) bool {
	if len(portal.MXID) == 0 {
		return false
	}
	portal.log.Infoln("Syncing portal for", user.MXID)

	portal.ensureUserInvited(user)
	go portal.addToSpace(user)

	update := false
	update = portal.UpdateMetadata(user, groupInfo) || update
	if !portal.IsPrivateChat() && !portal.IsBroadcastList() && portal.Avatar == "" {
		update = portal.UpdateAvatar(user, types.EmptyJID, false) || update
	}
	if update {
		portal.Update()
		portal.UpdateBridgeInfo()
	}
	return true
}

func (portal *Portal) GetBasePowerLevels() *event.PowerLevelsEventContent {
	anyone := 0
	nope := 99
	invite := 50
	if portal.bridge.Config.Bridge.AllowUserInvite {
		invite = 0
	}
	return &event.PowerLevelsEventContent{
		UsersDefault:    anyone,
		EventsDefault:   anyone,
		RedactPtr:       &anyone,
		StateDefaultPtr: &nope,
		BanPtr:          &nope,
		InvitePtr:       &invite,
		Users: map[id.UserID]int{
			portal.MainIntent().UserID: 100,
		},
		Events: map[string]int{
			event.StateRoomName.Type:   anyone,
			event.StateRoomAvatar.Type: anyone,
			event.StateTopic.Type:      anyone,
		},
	}
}

func (portal *Portal) ChangeAdminStatus(jids []types.JID, setAdmin bool) id.EventID {
	levels, err := portal.MainIntent().PowerLevels(portal.MXID)
	if err != nil {
		levels = portal.GetBasePowerLevels()
	}
	newLevel := 0
	if setAdmin {
		newLevel = 50
	}
	changed := false
	for _, jid := range jids {
		puppet := portal.bridge.GetPuppetByJID(jid)
		changed = levels.EnsureUserLevel(puppet.MXID, newLevel) || changed

		user := portal.bridge.GetUserByJID(jid)
		if user != nil {
			changed = levels.EnsureUserLevel(user.MXID, newLevel) || changed
		}
	}
	if changed {
		resp, err := portal.MainIntent().SetPowerLevels(portal.MXID, levels)
		if err != nil {
			portal.log.Errorln("Failed to change power levels:", err)
		} else {
			return resp.EventID
		}
	}
	return ""
}

func (portal *Portal) RestrictMessageSending(restrict bool) id.EventID {
	levels, err := portal.MainIntent().PowerLevels(portal.MXID)
	if err != nil {
		levels = portal.GetBasePowerLevels()
	}

	newLevel := 0
	if restrict {
		newLevel = 50
	}

	if levels.EventsDefault == newLevel {
		return ""
	}

	levels.EventsDefault = newLevel
	resp, err := portal.MainIntent().SetPowerLevels(portal.MXID, levels)
	if err != nil {
		portal.log.Errorln("Failed to change power levels:", err)
		return ""
	} else {
		return resp.EventID
	}
}

func (portal *Portal) RestrictMetadataChanges(restrict bool) id.EventID {
	levels, err := portal.MainIntent().PowerLevels(portal.MXID)
	if err != nil {
		levels = portal.GetBasePowerLevels()
	}
	newLevel := 0
	if restrict {
		newLevel = 50
	}
	changed := false
	changed = levels.EnsureEventLevel(event.StateRoomName, newLevel) || changed
	changed = levels.EnsureEventLevel(event.StateRoomAvatar, newLevel) || changed
	changed = levels.EnsureEventLevel(event.StateTopic, newLevel) || changed
	if changed {
		resp, err := portal.MainIntent().SetPowerLevels(portal.MXID, levels)
		if err != nil {
			portal.log.Errorln("Failed to change power levels:", err)
		} else {
			return resp.EventID
		}
	}
	return ""
}

func (portal *Portal) getBridgeInfo() (string, event.BridgeEventContent) {
	bridgeInfo := event.BridgeEventContent{
		BridgeBot: portal.bridge.Bot.UserID,
		Creator:   portal.MainIntent().UserID,
		Protocol: event.BridgeInfoSection{
			ID:          "whatsapp",
			DisplayName: "WhatsApp",
			AvatarURL:   portal.bridge.Config.AppService.Bot.ParsedAvatar.CUString(),
			ExternalURL: "https://www.whatsapp.com/",
		},
		Channel: event.BridgeInfoSection{
			ID:          portal.Key.JID.String(),
			DisplayName: portal.Name,
			AvatarURL:   portal.AvatarURL.CUString(),
		},
	}
	bridgeInfoStateKey := fmt.Sprintf("net.maunium.whatsapp://whatsapp/%s", portal.Key.JID)
	return bridgeInfoStateKey, bridgeInfo
}

func (portal *Portal) UpdateBridgeInfo() {
	if len(portal.MXID) == 0 {
		portal.log.Debugln("Not updating bridge info: no Matrix room created")
		return
	}
	portal.log.Debugln("Updating bridge info...")
	stateKey, content := portal.getBridgeInfo()
	_, err := portal.MainIntent().SendStateEvent(portal.MXID, event.StateBridge, stateKey, content)
	if err != nil {
		portal.log.Warnln("Failed to update m.bridge:", err)
	}
	// TODO remove this once https://github.com/matrix-org/matrix-doc/pull/2346 is in spec
	_, err = portal.MainIntent().SendStateEvent(portal.MXID, event.StateHalfShotBridge, stateKey, content)
	if err != nil {
		portal.log.Warnln("Failed to update uk.half-shot.bridge:", err)
	}
}

func (portal *Portal) CreateMatrixRoom(user *User, groupInfo *types.GroupInfo, isFullInfo, backfill bool) error {
	portal.roomCreateLock.Lock()
	defer portal.roomCreateLock.Unlock()
	if len(portal.MXID) > 0 {
		return nil
	}

	intent := portal.MainIntent()
	if err := intent.EnsureRegistered(); err != nil {
		return err
	}

	portal.log.Infoln("Creating Matrix room. Info source:", user.MXID)

	//var broadcastMetadata *types.BroadcastListInfo
	if portal.IsPrivateChat() {
		puppet := portal.bridge.GetPuppetByJID(portal.Key.JID)
		puppet.SyncContact(user, true, "creating private chat portal")
		if portal.bridge.Config.Bridge.PrivateChatPortalMeta {
			portal.Name = puppet.Displayname
			portal.AvatarURL = puppet.AvatarURL
			portal.Avatar = puppet.Avatar
		} else {
			portal.Name = ""
		}
		portal.Topic = PrivateChatTopic
	} else if portal.IsStatusBroadcastList() {
		if !portal.bridge.Config.Bridge.EnableStatusBroadcast {
			portal.log.Debugln("Status bridging is disabled in config, not creating room after all")
			return ErrStatusBroadcastDisabled
		}
		portal.Name = StatusBroadcastName
		portal.Topic = StatusBroadcastTopic
	} else if portal.IsBroadcastList() {
		//var err error
		//broadcastMetadata, err = user.Conn.GetBroadcastMetadata(portal.Key.JID)
		//if err == nil && broadcastMetadata.Status == 200 {
		//	portal.Name = broadcastMetadata.Name
		//} else {
		//	user.Conn.Store.ContactsLock.RLock()
		//	contact, _ := user.Conn.Store.Contacts[portal.Key.JID]
		//	user.Conn.Store.ContactsLock.RUnlock()
		//	portal.Name = contact.Name
		//}
		//if len(portal.Name) == 0 {
		//	portal.Name = UnnamedBroadcastName
		//}
		//portal.Topic = BroadcastTopic
		portal.log.Debugln("Broadcast list is not yet supported, not creating room after all")
		return fmt.Errorf("broadcast list bridging is currently not supported")
	} else {
		if groupInfo == nil || !isFullInfo {
			foundInfo, err := user.Client.GetGroupInfo(portal.Key.JID)

			// Ensure that the user is actually a participant in the conversation
			// before creating the matrix room
			if errors.Is(err, whatsmeow.ErrNotInGroup) {
				user.log.Debugfln("Skipping creating matrix room for %s because the user is not a participant", portal.Key.JID)
				user.bridge.DB.BackfillQuery.DeleteAllForPortal(user.MXID, portal.Key)
				user.bridge.DB.HistorySyncQuery.DeleteAllMessagesForPortal(user.MXID, portal.Key)
				return err
			} else if err != nil {
				portal.log.Warnfln("Failed to get group info through %s: %v", user.JID, err)
			} else {
				groupInfo = foundInfo
				isFullInfo = true
			}
		}
		if groupInfo != nil {
			portal.Name = groupInfo.Name
			portal.Topic = groupInfo.Topic
		}
		portal.UpdateAvatar(user, types.EmptyJID, false)
	}

	bridgeInfoStateKey, bridgeInfo := portal.getBridgeInfo()

	initialState := []*event.Event{{
		Type: event.StatePowerLevels,
		Content: event.Content{
			Parsed: portal.GetBasePowerLevels(),
		},
	}, {
		Type:     event.StateBridge,
		Content:  event.Content{Parsed: bridgeInfo},
		StateKey: &bridgeInfoStateKey,
	}, {
		// TODO remove this once https://github.com/matrix-org/matrix-doc/pull/2346 is in spec
		Type:     event.StateHalfShotBridge,
		Content:  event.Content{Parsed: bridgeInfo},
		StateKey: &bridgeInfoStateKey,
	}}
	if !portal.AvatarURL.IsEmpty() {
		initialState = append(initialState, &event.Event{
			Type: event.StateRoomAvatar,
			Content: event.Content{
				Parsed: event.RoomAvatarEventContent{URL: portal.AvatarURL},
			},
		})
	}

	var invite []id.UserID

	if portal.bridge.Config.Bridge.Encryption.Default {
		initialState = append(initialState, &event.Event{
			Type: event.StateEncryption,
			Content: event.Content{
				Parsed: event.EncryptionEventContent{Algorithm: id.AlgorithmMegolmV1},
			},
		})
		portal.Encrypted = true
		if portal.IsPrivateChat() {
			invite = append(invite, portal.bridge.Bot.UserID)
		}
	}

	creationContent := make(map[string]interface{})
	if !portal.bridge.Config.Bridge.FederateRooms {
		creationContent["m.federate"] = false
	}
	resp, err := intent.CreateRoom(&mautrix.ReqCreateRoom{
		Visibility:      "private",
		Name:            portal.Name,
		Topic:           portal.Topic,
		Invite:          invite,
		Preset:          "private_chat",
		IsDirect:        portal.IsPrivateChat(),
		InitialState:    initialState,
		CreationContent: creationContent,
	})
	if err != nil {
		return err
	}
	portal.MXID = resp.RoomID
	portal.Update()
	portal.bridge.portalsLock.Lock()
	portal.bridge.portalsByMXID[portal.MXID] = portal
	portal.bridge.portalsLock.Unlock()

	// We set the memberships beforehand to make sure the encryption key exchange in initial backfill knows the users are here.
	for _, userID := range invite {
		portal.bridge.StateStore.SetMembership(portal.MXID, userID, event.MembershipInvite)
	}

	portal.ensureUserInvited(user)
	user.syncChatDoublePuppetDetails(portal, true)

	go portal.addToSpace(user)

	if groupInfo != nil {
		if groupInfo.IsEphemeral {
			portal.ExpirationTime = groupInfo.DisappearingTimer
			portal.Update()
		}
		portal.SyncParticipants(user, groupInfo)
		if groupInfo.IsAnnounce {
			portal.RestrictMessageSending(groupInfo.IsAnnounce)
		}
		if groupInfo.IsLocked {
			portal.RestrictMetadataChanges(groupInfo.IsLocked)
		}
	}
	//if broadcastMetadata != nil {
	//	portal.SyncBroadcastRecipients(user, broadcastMetadata)
	//}
	if portal.IsPrivateChat() {
		puppet := user.bridge.GetPuppetByJID(portal.Key.JID)

		if portal.bridge.Config.Bridge.Encryption.Default {
			err = portal.bridge.Bot.EnsureJoined(portal.MXID)
			if err != nil {
				portal.log.Errorln("Failed to join created portal with bridge bot for e2be:", err)
			}
		}

		user.UpdateDirectChats(map[id.UserID][]id.RoomID{puppet.MXID: {portal.MXID}})
	}

	firstEventResp, err := portal.MainIntent().SendMessageEvent(portal.MXID, PortalCreationDummyEvent, struct{}{})
	if err != nil {
		portal.log.Errorln("Failed to send dummy event to mark portal creation:", err)
	} else {
		portal.FirstEventID = firstEventResp.EventID
		portal.Update()
	}

	if user.bridge.Config.Bridge.HistorySync.Backfill && backfill {
		portals := []*Portal{portal}
		user.EnqueueImmedateBackfills(portals)
		user.EnqueueDeferredBackfills(portals)
		user.EnqueueMediaBackfills(portals)
		user.BackfillQueue.ReCheckQueue <- true
	}
	return nil
}

func (portal *Portal) addToSpace(user *User) {
	spaceID := user.GetSpaceRoom()
	if len(spaceID) == 0 || user.IsInSpace(portal.Key) {
		return
	}
	_, err := portal.bridge.Bot.SendStateEvent(spaceID, event.StateSpaceChild, portal.MXID.String(), &event.SpaceChildEventContent{
		Via: []string{portal.bridge.Config.Homeserver.Domain},
	})
	if err != nil {
		portal.log.Errorfln("Failed to add room to %s's personal filtering space (%s): %v", user.MXID, spaceID, err)
	} else {
		portal.log.Debugfln("Added room to %s's personal filtering space (%s)", user.MXID, spaceID)
		user.MarkInSpace(portal.Key)
	}
}

func (portal *Portal) IsPrivateChat() bool {
	return portal.Key.JID.Server == types.DefaultUserServer
}

func (portal *Portal) IsGroupChat() bool {
	return portal.Key.JID.Server == types.GroupServer
}

func (portal *Portal) IsBroadcastList() bool {
	return portal.Key.JID.Server == types.BroadcastServer
}

func (portal *Portal) IsStatusBroadcastList() bool {
	return portal.Key.JID == types.StatusBroadcastJID
}

func (portal *Portal) HasRelaybot() bool {
	return portal.bridge.Config.Bridge.Relay.Enabled && len(portal.RelayUserID) > 0
}

func (portal *Portal) GetRelayUser() *User {
	if !portal.HasRelaybot() {
		return nil
	} else if portal.relayUser == nil {
		portal.relayUser = portal.bridge.GetUserByMXID(portal.RelayUserID)
	}
	return portal.relayUser
}

func (portal *Portal) MainIntent() *appservice.IntentAPI {
	if portal.IsPrivateChat() {
		return portal.bridge.GetPuppetByJID(portal.Key.JID).DefaultIntent()
	}
	return portal.bridge.Bot
}

func (portal *Portal) SetReply(content *event.MessageEventContent, replyToID types.MessageID) bool {
	if len(replyToID) == 0 {
		return false
	}
	message := portal.bridge.DB.Message.GetByJID(portal.Key, replyToID)
	if message == nil || message.IsFakeMXID() {
		return false
	}
	evt, err := portal.MainIntent().GetEvent(portal.MXID, message.MXID)
	if err != nil {
		portal.log.Warnln("Failed to get reply target:", err)
		content.RelatesTo = &event.RelatesTo{
			EventID: message.MXID,
			Type:    event.RelReply,
		}
		return true
	}
	_ = evt.Content.ParseRaw(evt.Type)
	if evt.Type == event.EventEncrypted {
		decryptedEvt, err := portal.bridge.Crypto.Decrypt(evt)
		if err != nil {
			portal.log.Warnln("Failed to decrypt reply target:", err)
		} else {
			evt = decryptedEvt
		}
	}
	content.SetReply(evt)
	return true
}

type sendReactionContent struct {
	event.ReactionEventContent
	DoublePuppet string `json:"fi.mau.double_puppet_source,omitempty"`
}

func (portal *Portal) HandleMessageReaction(intent *appservice.IntentAPI, user *User, info *types.MessageInfo, reaction *waProto.ReactionMessage, existingMsg *database.Message) {
	if existingMsg != nil {
		_, _ = portal.MainIntent().RedactEvent(portal.MXID, existingMsg.MXID, mautrix.ReqRedact{
			Reason: "The undecryptable message was actually a reaction",
		})
	}

	targetJID := reaction.GetKey().GetId()
	if reaction.GetText() == "" {
		existing := portal.bridge.DB.Reaction.GetByTargetJID(portal.Key, targetJID, info.Sender)
		if existing == nil {
			portal.log.Debugfln("Dropping removal %s of unknown reaction to %s from %s", info.ID, targetJID, info.Sender)
			return
		}

		extra := make(map[string]interface{})
		if intent.IsCustomPuppet {
			extra[doublePuppetKey] = doublePuppetValue
		}
		resp, err := intent.RedactEvent(portal.MXID, existing.MXID, mautrix.ReqRedact{Extra: extra})
		if err != nil {
			portal.log.Errorfln("Failed to redact reaction %s/%s from %s to %s: %v", existing.MXID, existing.JID, info.Sender, targetJID, err)
		}
		portal.finishHandling(existingMsg, info, resp.EventID, database.MsgReaction, database.MsgNoError)
		existing.Delete()
	} else {
		target := portal.bridge.DB.Message.GetByJID(portal.Key, targetJID)
		if target == nil {
			portal.log.Debugfln("Dropping reaction %s from %s to unknown message %s", info.ID, info.Sender, targetJID)
			return
		}

		var content sendReactionContent
		content.RelatesTo = event.RelatesTo{
			Type:    event.RelAnnotation,
			EventID: target.MXID,
			Key:     variationselector.Add(reaction.GetText()),
		}
		if intent.IsCustomPuppet {
			content.DoublePuppet = doublePuppetValue
		}
		resp, err := intent.SendMassagedMessageEvent(portal.MXID, event.EventReaction, &content, info.Timestamp.UnixMilli())
		if err != nil {
			portal.log.Errorfln("Failed to bridge reaction %s from %s to %s: %v", info.ID, info.Sender, target.JID, err)
			return
		}

		portal.finishHandling(existingMsg, info, resp.EventID, database.MsgReaction, database.MsgNoError)
		portal.upsertReaction(intent, target.JID, info.Sender, resp.EventID, info.ID)
	}
}

func (portal *Portal) HandleMessageRevoke(user *User, info *types.MessageInfo, key *waProto.MessageKey) bool {
	msg := portal.bridge.DB.Message.GetByJID(portal.Key, key.GetId())
	if msg == nil || msg.IsFakeMXID() {
		return false
	}
	intent := portal.bridge.GetPuppetByJID(info.Sender).IntentFor(portal)
	redactionReq := mautrix.ReqRedact{Extra: map[string]interface{}{}}
	if intent.IsCustomPuppet {
		redactionReq.Extra[doublePuppetKey] = doublePuppetValue
	}
	_, err := intent.RedactEvent(portal.MXID, msg.MXID, redactionReq)
	if err != nil {
		if errors.Is(err, mautrix.MForbidden) {
			_, err = portal.MainIntent().RedactEvent(portal.MXID, msg.MXID, redactionReq)
			if err != nil {
				portal.log.Errorln("Failed to redact %s: %v", msg.JID, err)
			}
		}
	} else {
		msg.Delete()
	}
	return true
}

func (portal *Portal) sendMainIntentMessage(content *event.MessageEventContent) (*mautrix.RespSendEvent, error) {
	return portal.sendMessage(portal.MainIntent(), event.EventMessage, content, nil, 0)
}

func (portal *Portal) encrypt(content *event.Content, eventType event.Type) (event.Type, error) {
	if portal.Encrypted && portal.bridge.Crypto != nil {
		// TODO maybe the locking should be inside mautrix-go?
		portal.encryptLock.Lock()
		encrypted, err := portal.bridge.Crypto.Encrypt(portal.MXID, eventType, *content)
		portal.encryptLock.Unlock()
		if err != nil {
			return eventType, fmt.Errorf("failed to encrypt event: %w", err)
		}
		eventType = event.EventEncrypted
		content.Parsed = encrypted
	}
	return eventType, nil
}

const doublePuppetKey = "fi.mau.double_puppet_source"
const doublePuppetValue = "mautrix-whatsapp"

func (portal *Portal) sendMessage(intent *appservice.IntentAPI, eventType event.Type, content *event.MessageEventContent, extraContent map[string]interface{}, timestamp int64) (*mautrix.RespSendEvent, error) {
	wrappedContent := event.Content{Parsed: content, Raw: extraContent}
	if timestamp != 0 && intent.IsCustomPuppet {
		if wrappedContent.Raw == nil {
			wrappedContent.Raw = map[string]interface{}{}
		}
		if intent.IsCustomPuppet {
			wrappedContent.Raw[doublePuppetKey] = doublePuppetValue
		}
	}
	var err error
	eventType, err = portal.encrypt(&wrappedContent, eventType)
	if err != nil {
		return nil, err
	}

	if eventType == event.EventEncrypted {
		// Clear other custom keys if the event was encrypted, but keep the double puppet identifier
		if intent.IsCustomPuppet {
			wrappedContent.Raw = map[string]interface{}{doublePuppetKey: doublePuppetValue}
		} else {
			wrappedContent.Raw = nil
		}
	}

	_, _ = intent.UserTyping(portal.MXID, false, 0)
	if timestamp == 0 {
		return intent.SendMessageEvent(portal.MXID, eventType, &wrappedContent)
	} else {
		return intent.SendMassagedMessageEvent(portal.MXID, eventType, &wrappedContent, timestamp)
	}
}

type ConvertedMessage struct {
	Intent  *appservice.IntentAPI
	Type    event.Type
	Content *event.MessageEventContent
	Extra   map[string]interface{}
	Caption *event.MessageEventContent

	MultiEvent []*event.MessageEventContent

	ReplyTo   types.MessageID
	ExpiresIn uint32
	Error     database.MessageErrorType
}

func (portal *Portal) convertTextMessage(intent *appservice.IntentAPI, source *User, msg *waProto.Message) *ConvertedMessage {
	content := &event.MessageEventContent{
		Body:    msg.GetConversation(),
		MsgType: event.MsgText,
	}
	if len(msg.GetExtendedTextMessage().GetText()) > 0 {
		content.Body = msg.GetExtendedTextMessage().GetText()
	}

	contextInfo := msg.GetExtendedTextMessage().GetContextInfo()
	portal.bridge.Formatter.ParseWhatsApp(portal.MXID, content, contextInfo.GetMentionedJid())
	replyTo := contextInfo.GetStanzaId()
	expiresIn := contextInfo.GetExpiration()
	extraAttrs := map[string]interface{}{}
	extraAttrs["com.beeper.linkpreviews"] = portal.convertURLPreviewToBeeper(intent, source, msg.GetExtendedTextMessage())

	return &ConvertedMessage{
		Intent:    intent,
		Type:      event.EventMessage,
		Content:   content,
		ReplyTo:   replyTo,
		ExpiresIn: expiresIn,
		Extra:     extraAttrs,
	}
}

func (portal *Portal) convertLiveLocationMessage(intent *appservice.IntentAPI, msg *waProto.LiveLocationMessage) *ConvertedMessage {
	content := &event.MessageEventContent{
		Body:    "Started sharing live location",
		MsgType: event.MsgNotice,
	}
	if len(msg.GetCaption()) > 0 {
		content.Body += ": " + msg.GetCaption()
	}
	return &ConvertedMessage{
		Intent:    intent,
		Type:      event.EventMessage,
		Content:   content,
		ReplyTo:   msg.GetContextInfo().GetStanzaId(),
		ExpiresIn: msg.GetContextInfo().GetExpiration(),
	}
}

func (portal *Portal) convertLocationMessage(intent *appservice.IntentAPI, msg *waProto.LocationMessage) *ConvertedMessage {
	url := msg.GetUrl()
	if len(url) == 0 {
		url = fmt.Sprintf("https://maps.google.com/?q=%.5f,%.5f", msg.GetDegreesLatitude(), msg.GetDegreesLongitude())
	}
	name := msg.GetName()
	if len(name) == 0 {
		latChar := 'N'
		if msg.GetDegreesLatitude() < 0 {
			latChar = 'S'
		}
		longChar := 'E'
		if msg.GetDegreesLongitude() < 0 {
			longChar = 'W'
		}
		name = fmt.Sprintf("%.4f° %c %.4f° %c", math.Abs(msg.GetDegreesLatitude()), latChar, math.Abs(msg.GetDegreesLongitude()), longChar)
	}

	content := &event.MessageEventContent{
		MsgType:       event.MsgLocation,
		Body:          fmt.Sprintf("Location: %s\n%s\n%s", name, msg.GetAddress(), url),
		Format:        event.FormatHTML,
		FormattedBody: fmt.Sprintf("Location: <a href='%s'>%s</a><br>%s", url, name, msg.GetAddress()),
		GeoURI:        fmt.Sprintf("geo:%.5f,%.5f", msg.GetDegreesLatitude(), msg.GetDegreesLongitude()),
	}

	if len(msg.GetJpegThumbnail()) > 0 {
		thumbnailMime := http.DetectContentType(msg.GetJpegThumbnail())
		uploadedThumbnail, _ := intent.UploadBytes(msg.GetJpegThumbnail(), thumbnailMime)
		if uploadedThumbnail != nil {
			cfg, _, _ := image.DecodeConfig(bytes.NewReader(msg.GetJpegThumbnail()))
			content.Info = &event.FileInfo{
				ThumbnailInfo: &event.FileInfo{
					Size:     len(msg.GetJpegThumbnail()),
					Width:    cfg.Width,
					Height:   cfg.Height,
					MimeType: thumbnailMime,
				},
				ThumbnailURL: uploadedThumbnail.ContentURI.CUString(),
			}
		}
	}

	return &ConvertedMessage{
		Intent:    intent,
		Type:      event.EventMessage,
		Content:   content,
		ReplyTo:   msg.GetContextInfo().GetStanzaId(),
		ExpiresIn: msg.GetContextInfo().GetExpiration(),
	}
}

const inviteMsg = `%s<hr/>This invitation to join "%s" expires at %s. Reply to this message with <code>!wa accept</code> to accept the invite.`
const inviteMetaField = "fi.mau.whatsapp.invite"
const escapedInviteMetaField = `fi\.mau\.whatsapp\.invite`

type InviteMeta struct {
	JID        types.JID `json:"jid"`
	Code       string    `json:"code"`
	Expiration int64     `json:"expiration,string"`
	Inviter    types.JID `json:"inviter"`
}

func (portal *Portal) convertGroupInviteMessage(intent *appservice.IntentAPI, info *types.MessageInfo, msg *waProto.GroupInviteMessage) *ConvertedMessage {
	expiry := time.Unix(msg.GetInviteExpiration(), 0)
	htmlMessage := fmt.Sprintf(inviteMsg, html.EscapeString(msg.GetCaption()), msg.GetGroupName(), expiry)
	content := &event.MessageEventContent{
		MsgType:       event.MsgText,
		Body:          format.HTMLToText(htmlMessage),
		Format:        event.FormatHTML,
		FormattedBody: htmlMessage,
	}
	groupJID, err := types.ParseJID(msg.GetGroupJid())
	if err != nil {
		portal.log.Errorfln("Failed to parse invite group JID: %v", err)
	}
	extraAttrs := map[string]interface{}{
		inviteMetaField: InviteMeta{
			JID:        groupJID,
			Code:       msg.GetInviteCode(),
			Expiration: msg.GetInviteExpiration(),
			Inviter:    info.Sender.ToNonAD(),
		},
	}
	return &ConvertedMessage{
		Intent:    intent,
		Type:      event.EventMessage,
		Content:   content,
		Extra:     extraAttrs,
		ReplyTo:   msg.GetContextInfo().GetStanzaId(),
		ExpiresIn: msg.GetContextInfo().GetExpiration(),
	}
}

func (portal *Portal) convertContactMessage(intent *appservice.IntentAPI, msg *waProto.ContactMessage) *ConvertedMessage {
	fileName := fmt.Sprintf("%s.vcf", msg.GetDisplayName())
	data := []byte(msg.GetVcard())
	mimeType := "text/vcard"
	data, uploadMimeType, file := portal.encryptFile(data, mimeType)

	uploadResp, err := intent.UploadBytesWithName(data, uploadMimeType, fileName)
	if err != nil {
		portal.log.Errorfln("Failed to upload vcard of %s: %v", msg.GetDisplayName(), err)
		return nil
	}

	content := &event.MessageEventContent{
		Body:    fileName,
		MsgType: event.MsgFile,
		File:    file,
		Info: &event.FileInfo{
			MimeType: mimeType,
			Size:     len(msg.GetVcard()),
		},
	}
	if content.File != nil {
		content.File.URL = uploadResp.ContentURI.CUString()
	} else {
		content.URL = uploadResp.ContentURI.CUString()
	}

	return &ConvertedMessage{
		Intent:    intent,
		Type:      event.EventMessage,
		Content:   content,
		ReplyTo:   msg.GetContextInfo().GetStanzaId(),
		ExpiresIn: msg.GetContextInfo().GetExpiration(),
	}
}

func (portal *Portal) convertContactsArrayMessage(intent *appservice.IntentAPI, msg *waProto.ContactsArrayMessage) *ConvertedMessage {
	name := msg.GetDisplayName()
	if len(name) == 0 {
		name = fmt.Sprintf("%d contacts", len(msg.GetContacts()))
	}
	contacts := make([]*event.MessageEventContent, 0, len(msg.GetContacts()))
	for _, contact := range msg.GetContacts() {
		converted := portal.convertContactMessage(intent, contact)
		if converted != nil {
			contacts = append(contacts, converted.Content)
		}
	}
	return &ConvertedMessage{
		Intent: intent,
		Type:   event.EventMessage,
		Content: &event.MessageEventContent{
			MsgType: event.MsgNotice,
			Body:    fmt.Sprintf("Sent %s", name),
		},
		ReplyTo:    msg.GetContextInfo().GetStanzaId(),
		ExpiresIn:  msg.GetContextInfo().GetExpiration(),
		MultiEvent: contacts,
	}
}

func (portal *Portal) tryKickUser(userID id.UserID, intent *appservice.IntentAPI) error {
	_, err := intent.KickUser(portal.MXID, &mautrix.ReqKickUser{UserID: userID})
	if err != nil {
		httpErr, ok := err.(mautrix.HTTPError)
		if ok && httpErr.RespError != nil && httpErr.RespError.ErrCode == "M_FORBIDDEN" {
			_, err = portal.MainIntent().KickUser(portal.MXID, &mautrix.ReqKickUser{UserID: userID})
		}
	}
	return err
}

func (portal *Portal) removeUser(isSameUser bool, kicker *appservice.IntentAPI, target id.UserID, targetIntent *appservice.IntentAPI) {
	if !isSameUser || targetIntent == nil {
		err := portal.tryKickUser(target, kicker)
		if err != nil {
			portal.log.Warnfln("Failed to kick %s from %s: %v", target, portal.MXID, err)
			if targetIntent != nil {
				_, _ = portal.leaveWithPuppetMeta(targetIntent)
			}
		}
	} else {
		_, err := portal.leaveWithPuppetMeta(targetIntent)
		if err != nil {
			portal.log.Warnfln("Failed to leave portal as %s: %v", target, err)
			_, _ = portal.MainIntent().KickUser(portal.MXID, &mautrix.ReqKickUser{UserID: target})
		}
	}
}

func (portal *Portal) HandleWhatsAppKick(source *User, senderJID types.JID, jids []types.JID) {
	sender := portal.bridge.GetPuppetByJID(senderJID)
	senderIntent := sender.IntentFor(portal)
	for _, jid := range jids {
		//if source != nil && source.JID.User == jid.User {
		//	portal.log.Debugln("Ignoring self-kick by", source.MXID)
		//	continue
		//}
		puppet := portal.bridge.GetPuppetByJID(jid)
		portal.removeUser(puppet.JID == sender.JID, senderIntent, puppet.MXID, puppet.DefaultIntent())

		if !portal.IsBroadcastList() {
			user := portal.bridge.GetUserByJID(jid)
			if user != nil {
				var customIntent *appservice.IntentAPI
				if puppet.CustomMXID == user.MXID {
					customIntent = puppet.CustomIntent()
				}
				portal.removeUser(puppet.JID == sender.JID, senderIntent, user.MXID, customIntent)
			}
		}
	}
}

func (portal *Portal) leaveWithPuppetMeta(intent *appservice.IntentAPI) (*mautrix.RespSendEvent, error) {
	content := event.Content{
		Parsed: event.MemberEventContent{
			Membership: event.MembershipLeave,
		},
		Raw: map[string]interface{}{
			doublePuppetKey: doublePuppetValue,
		},
	}
	// Bypass IntentAPI, we don't want to EnsureJoined here
	return intent.Client.SendStateEvent(portal.MXID, event.StateMember, intent.UserID.String(), &content)
}

func (portal *Portal) HandleWhatsAppInvite(source *User, senderJID *types.JID, jids []types.JID) (evtID id.EventID) {
	intent := portal.MainIntent()
	if senderJID != nil && !senderJID.IsEmpty() {
		sender := portal.bridge.GetPuppetByJID(*senderJID)
		intent = sender.IntentFor(portal)
	}
	for _, jid := range jids {
		puppet := portal.bridge.GetPuppetByJID(jid)
		puppet.SyncContact(source, true, "handling whatsapp invite")
		content := event.Content{
			Parsed: event.MemberEventContent{
				Membership:  "invite",
				Displayname: puppet.Displayname,
				AvatarURL:   puppet.AvatarURL.CUString(),
			},
			Raw: map[string]interface{}{
				doublePuppetKey: doublePuppetValue,
			},
		}
		resp, err := intent.SendStateEvent(portal.MXID, event.StateMember, puppet.MXID.String(), &content)
		if err != nil {
			portal.log.Warnfln("Failed to invite %s as %s: %v", puppet.MXID, intent.UserID, err)
			_ = portal.MainIntent().EnsureInvited(portal.MXID, puppet.MXID)
		} else {
			evtID = resp.EventID
		}
		err = puppet.DefaultIntent().EnsureJoined(portal.MXID)
		if err != nil {
			portal.log.Errorfln("Failed to ensure %s is joined: %v", puppet.MXID, err)
		}
	}
	return
}

const failedMediaField = "fi.mau.whatsapp.failed_media"

type FailedMediaKeys struct {
	Key       []byte              `json:"key"`
	Length    int                 `json:"length"`
	Type      whatsmeow.MediaType `json:"type"`
	SHA256    []byte              `json:"sha256"`
	EncSHA256 []byte              `json:"enc_sha256"`
}

type FailedMediaMeta struct {
	Type         event.Type                 `json:"type"`
	Content      *event.MessageEventContent `json:"content"`
	ExtraContent map[string]interface{}     `json:"extra_content,omitempty"`
	Media        FailedMediaKeys            `json:"whatsapp_media"`
}

func shallowCopyMap(data map[string]interface{}) map[string]interface{} {
	newMap := make(map[string]interface{}, len(data))
	for key, value := range data {
		newMap[key] = value
	}
	return newMap
}

func (portal *Portal) makeMediaBridgeFailureMessage(info *types.MessageInfo, bridgeErr error, converted *ConvertedMessage, keys *FailedMediaKeys, userFriendlyError string) *ConvertedMessage {
	portal.log.Errorfln("Failed to bridge media for %s: %v", info.ID, bridgeErr)
	if keys != nil {
		meta := &FailedMediaMeta{
			Type:         converted.Type,
			Content:      converted.Content,
			ExtraContent: shallowCopyMap(converted.Extra),
			Media:        *keys,
		}
		converted.Extra[failedMediaField] = meta
		portal.mediaErrorCache[info.ID] = meta
	}
	converted.Type = event.EventMessage
	body := userFriendlyError
	if body == "" {
		body = fmt.Sprintf("Failed to bridge media: %v", bridgeErr)
	}
	converted.Content = &event.MessageEventContent{
		MsgType: event.MsgNotice,
		Body:    body,
	}
	return converted
}

func (portal *Portal) encryptFile(data []byte, mimeType string) ([]byte, string, *event.EncryptedFileInfo) {
	if !portal.Encrypted {
		return data, mimeType, nil
	}

	file := &event.EncryptedFileInfo{
		EncryptedFile: *attachment.NewEncryptedFile(),
		URL:           "",
	}
	return file.Encrypt(data), "application/octet-stream", file
}

type MediaMessage interface {
	whatsmeow.DownloadableMessage
	GetContextInfo() *waProto.ContextInfo
	GetFileLength() uint64
	GetMimetype() string
}

type MediaMessageWithThumbnail interface {
	MediaMessage
	GetJpegThumbnail() []byte
}

type MediaMessageWithCaption interface {
	MediaMessage
	GetCaption() string
}

type MediaMessageWithDimensions interface {
	MediaMessage
	GetHeight() uint32
	GetWidth() uint32
}

type MediaMessageWithFileName interface {
	MediaMessage
	GetFileName() string
}

type MediaMessageWithDuration interface {
	MediaMessage
	GetSeconds() uint32
}

func (portal *Portal) convertMediaMessageContent(intent *appservice.IntentAPI, msg MediaMessage) *ConvertedMessage {
	content := &event.MessageEventContent{
		Info: &event.FileInfo{
			MimeType: msg.GetMimetype(),
			Size:     int(msg.GetFileLength()),
		},
	}
	extraContent := map[string]interface{}{}

	messageWithDimensions, ok := msg.(MediaMessageWithDimensions)
	if ok {
		content.Info.Width = int(messageWithDimensions.GetWidth())
		content.Info.Height = int(messageWithDimensions.GetHeight())
	}

	msgWithName, ok := msg.(MediaMessageWithFileName)
	if ok && len(msgWithName.GetFileName()) > 0 {
		content.Body = msgWithName.GetFileName()
	} else {
		mimeClass := strings.Split(msg.GetMimetype(), "/")[0]
		switch mimeClass {
		case "application":
			content.Body = "file"
		default:
			content.Body = mimeClass
		}

		content.Body += util.ExtensionFromMimetype(msg.GetMimetype())
	}

	msgWithDuration, ok := msg.(MediaMessageWithDuration)
	if ok {
		content.Info.Duration = int(msgWithDuration.GetSeconds()) * 1000
	}

	videoMessage, ok := msg.(*waProto.VideoMessage)
	var isGIF bool
	if ok && videoMessage.GetGifPlayback() {
		isGIF = true
		extraContent["info"] = map[string]interface{}{
			"fi.mau.loop":          true,
			"fi.mau.autoplay":      true,
			"fi.mau.hide_controls": true,
			"fi.mau.no_audio":      true,
		}
	}

	messageWithThumbnail, ok := msg.(MediaMessageWithThumbnail)
	if ok && messageWithThumbnail.GetJpegThumbnail() != nil && (portal.bridge.Config.Bridge.WhatsappThumbnail || isGIF) {
		thumbnailData := messageWithThumbnail.GetJpegThumbnail()
		thumbnailMime := http.DetectContentType(thumbnailData)
		thumbnailCfg, _, _ := image.DecodeConfig(bytes.NewReader(thumbnailData))
		thumbnailSize := len(thumbnailData)
		thumbnail, thumbnailUploadMime, thumbnailFile := portal.encryptFile(thumbnailData, thumbnailMime)
		uploadedThumbnail, err := intent.UploadBytes(thumbnail, thumbnailUploadMime)
		if err != nil {
			portal.log.Warnfln("Failed to upload thumbnail: %v", err)
		} else if uploadedThumbnail != nil {
			if thumbnailFile != nil {
				thumbnailFile.URL = uploadedThumbnail.ContentURI.CUString()
				content.Info.ThumbnailFile = thumbnailFile
			} else {
				content.Info.ThumbnailURL = uploadedThumbnail.ContentURI.CUString()
			}
			content.Info.ThumbnailInfo = &event.FileInfo{
				Size:     thumbnailSize,
				Width:    thumbnailCfg.Width,
				Height:   thumbnailCfg.Height,
				MimeType: thumbnailMime,
			}
		}
	}

	_, isSticker := msg.(*waProto.StickerMessage)
	switch strings.ToLower(strings.Split(msg.GetMimetype(), "/")[0]) {
	case "image":
		if !isSticker {
			content.MsgType = event.MsgImage
		}
	case "video":
		content.MsgType = event.MsgVideo
	case "audio":
		content.MsgType = event.MsgAudio
	default:
		content.MsgType = event.MsgFile
	}

	eventType := event.EventMessage
	if isSticker {
		eventType = event.EventSticker
	}

	audioMessage, ok := msg.(*waProto.AudioMessage)
	if ok {
		var waveform []int
		if audioMessage.Waveform != nil {
			waveform = make([]int, len(audioMessage.Waveform))
			max := 0
			for i, part := range audioMessage.Waveform {
				waveform[i] = int(part)
				if waveform[i] > max {
					max = waveform[i]
				}
			}
			multiplier := 0
			if max > 0 {
				multiplier = 1024 / max
			}
			if multiplier > 32 {
				multiplier = 32
			}
			for i := range waveform {
				waveform[i] *= multiplier
			}
		}
		extraContent["org.matrix.msc1767.audio"] = map[string]interface{}{
			"duration": int(audioMessage.GetSeconds()) * 1000,
			"waveform": waveform,
		}
		if audioMessage.GetPtt() {
			extraContent["org.matrix.msc3245.voice"] = map[string]interface{}{}
		}
	}

	messageWithCaption, ok := msg.(MediaMessageWithCaption)
	var captionContent *event.MessageEventContent
	if ok && len(messageWithCaption.GetCaption()) > 0 {
		captionContent = &event.MessageEventContent{
			Body:    messageWithCaption.GetCaption(),
			MsgType: event.MsgNotice,
		}

		portal.bridge.Formatter.ParseWhatsApp(portal.MXID, captionContent, msg.GetContextInfo().GetMentionedJid())
	}

	return &ConvertedMessage{
		Intent:    intent,
		Type:      eventType,
		Content:   content,
		Caption:   captionContent,
		ReplyTo:   msg.GetContextInfo().GetStanzaId(),
		ExpiresIn: msg.GetContextInfo().GetExpiration(),
		Extra:     extraContent,
	}
}

func (portal *Portal) uploadMedia(intent *appservice.IntentAPI, data []byte, content *event.MessageEventContent) error {
	data, uploadMimeType, file := portal.encryptFile(data, content.Info.MimeType)

	req := mautrix.ReqUploadMedia{
		ContentBytes: data,
		ContentType:  uploadMimeType,
	}
	var mxc id.ContentURI
	if portal.bridge.Config.Homeserver.AsyncMedia {
		uploaded, err := intent.UnstableUploadAsync(req)
		if err != nil {
			return err
		}
		mxc = uploaded.ContentURI
	} else {
		uploaded, err := intent.UploadMedia(req)
		if err != nil {
			return err
		}
		mxc = uploaded.ContentURI
	}

	if file != nil {
		file.URL = mxc.CUString()
		content.File = file
	} else {
		content.URL = mxc.CUString()
	}

	content.Info.Size = len(data)
	if content.Info.Width == 0 && content.Info.Height == 0 && strings.HasPrefix(content.Info.MimeType, "image/") {
		cfg, _, _ := image.DecodeConfig(bytes.NewReader(data))
		content.Info.Width, content.Info.Height = cfg.Width, cfg.Height
	}
	return nil
}

func (portal *Portal) convertMediaMessage(intent *appservice.IntentAPI, source *User, info *types.MessageInfo, msg MediaMessage) *ConvertedMessage {
	converted := portal.convertMediaMessageContent(intent, msg)
	data, err := source.Client.Download(msg)
	if errors.Is(err, whatsmeow.ErrMediaDownloadFailedWith404) || errors.Is(err, whatsmeow.ErrMediaDownloadFailedWith410) {
		//portal.log.Warnfln("Failed to download media for %s: %v. Requesting retry", info.ID, err)
		//err = source.Client.SendMediaRetryReceipt(info, msg.GetMediaKey())
		//if err != nil {
		//	portal.log.Errorfln("Failed to send media retry receipt for %s: %v", info.ID, err)
		//}
		converted.Error = database.MsgErrMediaNotFound

		errorText := "Old photo or attachment."
		if portal.bridge.Config.Bridge.HistorySync.BackfillMedia {
			if len(portal.bridge.Config.Bridge.HistorySync.Media) > 0 {
				errorText += " Media will be requested from your phone later."
			} else {
				errorText += ` React with the \u267b (recycle) emoji or the text "click to retry" to request this media from your phone or use the backfill command to request all missing media for this chat.`
			}
		} else {
			errorText += ` Automatic media backfill is disabled. React with the \u267b (recycle) emoji or the text "click to retry" to request this media from your phone.`
		}

		return portal.makeMediaBridgeFailureMessage(info, err, converted, &FailedMediaKeys{
			Key:       msg.GetMediaKey(),
			Length:    int(msg.GetFileLength()),
			Type:      whatsmeow.GetMediaType(msg),
			SHA256:    msg.GetFileSha256(),
			EncSHA256: msg.GetFileEncSha256(),
		}, errorText)
	} else if errors.Is(err, whatsmeow.ErrNoURLPresent) {
		portal.log.Debugfln("No URL present error for media message %s, ignoring...", info.ID)
		return nil
	} else if errors.Is(err, whatsmeow.ErrFileLengthMismatch) || errors.Is(err, whatsmeow.ErrInvalidMediaSHA256) {
		portal.log.Warnfln("Mismatching media checksums in %s: %v. Ignoring because WhatsApp seems to ignore them too", info.ID, err)
	} else if err != nil {
		return portal.makeMediaBridgeFailureMessage(info, err, converted, nil, "")
	}

	err = portal.uploadMedia(intent, data, converted.Content)
	if err != nil {
		if errors.Is(err, mautrix.MTooLarge) {
			return portal.makeMediaBridgeFailureMessage(info, errors.New("homeserver rejected too large file"), converted, nil, "")
		} else if httpErr, ok := err.(mautrix.HTTPError); ok && httpErr.IsStatus(413) {
			return portal.makeMediaBridgeFailureMessage(info, errors.New("proxy rejected too large file"), converted, nil, "")
		} else {
			return portal.makeMediaBridgeFailureMessage(info, fmt.Errorf("failed to upload media: %w", err), converted, nil, "")
		}
	}
	return converted
}

func (portal *Portal) fetchMediaRetryEvent(msg *database.Message) (*FailedMediaMeta, error) {
	errorMeta, ok := portal.mediaErrorCache[msg.JID]
	if ok {
		return errorMeta, nil
	}
	evt, err := portal.MainIntent().GetEvent(portal.MXID, msg.MXID)
	if err != nil {
		return nil, fmt.Errorf("failed to fetch event %s: %w", msg.MXID, err)
	}
	if evt.Type == event.EventEncrypted {
		err = evt.Content.ParseRaw(evt.Type)
		if err != nil {
			return nil, fmt.Errorf("failed to parse encrypted content in %s: %w", msg.MXID, err)
		}
		evt, err = portal.bridge.Crypto.Decrypt(evt)
		if err != nil {
			return nil, fmt.Errorf("failed to decrypt event %s: %w", msg.MXID, err)
		}
	}
	errorMetaResult := gjson.GetBytes(evt.Content.VeryRaw, strings.ReplaceAll(failedMediaField, ".", "\\."))
	if !errorMetaResult.Exists() || !errorMetaResult.IsObject() {
		return nil, fmt.Errorf("didn't find failed media metadata in %s", msg.MXID)
	}
	var errorMetaBytes []byte
	if errorMetaResult.Index > 0 {
		errorMetaBytes = evt.Content.VeryRaw[errorMetaResult.Index : errorMetaResult.Index+len(errorMetaResult.Raw)]
	} else {
		errorMetaBytes = []byte(errorMetaResult.Raw)
	}
	err = json.Unmarshal(errorMetaBytes, &errorMeta)
	if err != nil {
		return nil, fmt.Errorf("failed to unmarshal failed media metadata in %s: %w", msg.MXID, err)
	}
	return errorMeta, nil
}

func (portal *Portal) handleMediaRetry(retry *events.MediaRetry, source *User) {
	msg := portal.bridge.DB.Message.GetByJID(portal.Key, retry.MessageID)
	if msg == nil {
		portal.log.Warnfln("Dropping media retry notification for unknown message %s", retry.MessageID)
		return
	} else if msg.Error != database.MsgErrMediaNotFound {
		portal.log.Warnfln("Dropping media retry notification for non-errored message %s / %s", retry.MessageID, msg.MXID)
		return
	}

	meta, err := portal.fetchMediaRetryEvent(msg)
	if err != nil {
		portal.log.Warnfln("Can't handle media retry notification for %s: %v", retry.MessageID, err)
		return
	}

	retryData, err := whatsmeow.DecryptMediaRetryNotification(retry, meta.Media.Key)
	if err != nil {
		portal.log.Warnfln("Failed to handle media retry notification for %s: %v", retry.MessageID, err)
		return
	} else if retryData.GetResult() != waProto.MediaRetryNotification_SUCCESS {
		portal.log.Warnfln("Got error response in media retry notification for %s: %s", retry.MessageID, waProto.MediaRetryNotification_MediaRetryNotificationResultType_name[int32(retryData.GetResult())])
		return
	}

	var puppet *Puppet
	if retry.FromMe {
		puppet = portal.bridge.GetPuppetByJID(source.JID)
	} else if retry.ChatID.Server == types.DefaultUserServer {
		puppet = portal.bridge.GetPuppetByJID(retry.ChatID)
	} else {
		puppet = portal.bridge.GetPuppetByJID(retry.SenderID)
	}
	intent := puppet.IntentFor(portal)

	data, err := source.Client.DownloadMediaWithPath(retryData.GetDirectPath(), meta.Media.EncSHA256, meta.Media.SHA256, meta.Media.Key, meta.Media.Length, meta.Media.Type, "")
	if err != nil {
		portal.log.Warnfln("Failed to download media in %s after retry notification: %v", retry.MessageID, err)
		return
	}
	err = portal.uploadMedia(intent, data, meta.Content)
	if err != nil {
		portal.log.Warnfln("Failed to re-upload media for %s after retry notification: %v", retry.MessageID, err)
		return
	}
	replaceContent := &event.MessageEventContent{
		MsgType:    meta.Content.MsgType,
		Body:       "* " + meta.Content.Body,
		NewContent: meta.Content,
		RelatesTo: &event.RelatesTo{
			EventID: msg.MXID,
			Type:    event.RelReplace,
		},
	}
	// Move the extra content into m.new_content too
	meta.ExtraContent = map[string]interface{}{
		"m.new_content": shallowCopyMap(meta.ExtraContent),
	}
	resp, err := portal.sendMessage(intent, meta.Type, replaceContent, meta.ExtraContent, time.Now().UnixMilli())
	if err != nil {
		portal.log.Warnfln("Failed to edit %s after retry notification for %s: %v", msg.MXID, retry.MessageID, err)
		return
	}
	portal.log.Debugfln("Successfully edited %s -> %s after retry notification for %s", msg.MXID, resp.EventID, retry.MessageID)
	msg.UpdateMXID(resp.EventID, database.MsgNormal, database.MsgNoError)
}

func (portal *Portal) requestMediaRetry(user *User, eventID id.EventID) {
	msg := portal.bridge.DB.Message.GetByMXID(eventID)
	if msg == nil {
		portal.log.Debugfln("%s requested a media retry for unknown event %s", user.MXID, eventID)
		return
	} else if msg.Error != database.MsgErrMediaNotFound {
		portal.log.Debugfln("%s requested a media retry for non-errored event %s", user.MXID, eventID)
		return
	}

	evt, err := portal.fetchMediaRetryEvent(msg)
	if err != nil {
		portal.log.Warnfln("Can't send media retry request for %s: %v", msg.JID, err)
		return
	}

	err = user.Client.SendMediaRetryReceipt(&types.MessageInfo{
		ID: msg.JID,
		MessageSource: types.MessageSource{
			IsFromMe: msg.Sender.User == user.JID.User,
			IsGroup:  !portal.IsPrivateChat(),
			Sender:   msg.Sender,
			Chat:     portal.Key.JID,
		},
	}, evt.Media.Key)
	if err != nil {
		portal.log.Warnfln("Failed to send media retry request for %s: %v", msg.JID, err)
	} else {
		portal.log.Debugfln("Sent media retry request for %s", msg.JID)
	}
}

const thumbnailMaxSize = 72
const thumbnailMinSize = 24

func createJPEGThumbnailAndGetSize(source []byte) ([]byte, int, int, error) {
	src, _, err := image.Decode(bytes.NewReader(source))
	if err != nil {
		return nil, 0, 0, fmt.Errorf("failed to decode thumbnail: %w", err)
	}
	imageBounds := src.Bounds()
	width, height := imageBounds.Max.X, imageBounds.Max.Y
	var img image.Image
	if width <= thumbnailMaxSize && height <= thumbnailMaxSize {
		// No need to resize
		img = src
	} else {
		if width == height {
			width = thumbnailMaxSize
			height = thumbnailMaxSize
		} else if width < height {
			width /= height / thumbnailMaxSize
			height = thumbnailMaxSize
		} else {
			height /= width / thumbnailMaxSize
			width = thumbnailMaxSize
		}
		if width < thumbnailMinSize {
			width = thumbnailMinSize
		}
		if height < thumbnailMinSize {
			height = thumbnailMinSize
		}
		dst := image.NewRGBA(image.Rect(0, 0, width, height))
		draw.NearestNeighbor.Scale(dst, dst.Rect, src, src.Bounds(), draw.Over, nil)
		img = dst
	}

	var buf bytes.Buffer
	err = jpeg.Encode(&buf, img, &jpeg.Options{Quality: jpeg.DefaultQuality})
	if err != nil {
		return nil, width, height, fmt.Errorf("failed to re-encode thumbnail: %w", err)
	}
	return buf.Bytes(), width, height, nil
}

func createJPEGThumbnail(source []byte) ([]byte, error) {
	data, _, _, err := createJPEGThumbnailAndGetSize(source)
	return data, err
}

func (portal *Portal) downloadThumbnail(original []byte, thumbnailURL id.ContentURIString, eventID id.EventID) ([]byte, error) {
	if len(thumbnailURL) == 0 {
		// just fall back to making thumbnail of original
	} else if mxc, err := thumbnailURL.Parse(); err != nil {
		portal.log.Warnfln("Malformed thumbnail URL in %s: %v (falling back to generating thumbnail from source)", eventID, err)
	} else if thumbnail, err := portal.MainIntent().DownloadBytes(mxc); err != nil {
		portal.log.Warnfln("Failed to download thumbnail in %s: %v (falling back to generating thumbnail from source)", eventID, err)
	} else {
		return createJPEGThumbnail(thumbnail)
	}
	return createJPEGThumbnail(original)
}

func (portal *Portal) convertWebPtoPNG(webpImage []byte) ([]byte, error) {
	webpDecoded, err := webp.Decode(bytes.NewReader(webpImage))
	if err != nil {
		return nil, fmt.Errorf("failed to decode webp image: %w", err)
	}

	var pngBuffer bytes.Buffer
	if err := png.Encode(&pngBuffer, webpDecoded); err != nil {
		return nil, fmt.Errorf("failed to encode png image: %w", err)
	}

	return pngBuffer.Bytes(), nil
}

func (portal *Portal) preprocessMatrixMedia(sender *User, relaybotFormatted bool, content *event.MessageEventContent, eventID id.EventID, mediaType whatsmeow.MediaType) *MediaUpload {
	var caption string
	var mentionedJIDs []string
	if relaybotFormatted {
		caption, mentionedJIDs = portal.bridge.Formatter.ParseMatrix(content.FormattedBody)
	}

	var file *event.EncryptedFileInfo
	rawMXC := content.URL
	if content.File != nil {
		file = content.File
		rawMXC = file.URL
	}
	mxc, err := rawMXC.Parse()
	if err != nil {
		portal.log.Errorln("Malformed content URL in %s: %v", eventID, err)
		return nil
	}
	data, err := portal.MainIntent().DownloadBytes(mxc)
	if err != nil {
		portal.log.Errorfln("Failed to download media in %s: %v", eventID, err)
		return nil
	}
	if file != nil {
		data, err = file.Decrypt(data)
		if err != nil {
			portal.log.Errorfln("Failed to decrypt media in %s: %v", eventID, err)
			return nil
		}
	}
	if mediaType == whatsmeow.MediaVideo && content.GetInfo().MimeType == "image/gif" {
		data, err = ffmpeg.ConvertBytes(data, ".mp4", []string{"-f", "gif"}, []string{
			"-pix_fmt", "yuv420p", "-c:v", "libx264", "-movflags", "+faststart",
			"-filter:v", "crop='floor(in_w/2)*2:floor(in_h/2)*2'",
		}, content.GetInfo().MimeType)
		if err != nil {
			portal.log.Errorfln("Failed to convert gif to mp4 in %s: %v", eventID, err)
			return nil
		}
		content.Info.MimeType = "video/mp4"
	}
	if mediaType == whatsmeow.MediaImage && content.GetInfo().MimeType == "image/webp" {
		data, err = portal.convertWebPtoPNG(data)
		if err != nil {
			portal.log.Errorfln("Failed to convert webp to png in %s: %v", eventID, err)
			return nil
		}
		content.Info.MimeType = "image/png"
	}
	uploadResp, err := sender.Client.Upload(context.Background(), data, mediaType)
	if err != nil {
		portal.log.Errorfln("Failed to upload media in %s: %v", eventID, err)
		return nil
	}

	// Audio doesn't have thumbnails
	var thumbnail []byte
	if mediaType != whatsmeow.MediaAudio {
		thumbnail, err = portal.downloadThumbnail(data, content.GetInfo().ThumbnailURL, eventID)
		// Ignore format errors for non-image files, we don't care about those thumbnails
		if err != nil && (!errors.Is(err, image.ErrFormat) || mediaType == whatsmeow.MediaImage) {
			portal.log.Errorfln("Failed to generate thumbnail for %s: %v", eventID, err)
		}
	}

	return &MediaUpload{
		UploadResponse: uploadResp,
		Caption:        caption,
		MentionedJIDs:  mentionedJIDs,
		Thumbnail:      thumbnail,
		FileLength:     len(data),
	}
}

type MediaUpload struct {
	whatsmeow.UploadResponse
	Caption       string
	MentionedJIDs []string
	Thumbnail     []byte
	FileLength    int
}

func (portal *Portal) addRelaybotFormat(sender *User, content *event.MessageEventContent) bool {
	member := portal.MainIntent().Member(portal.MXID, sender.MXID)
	if member == nil {
		member = &event.MemberEventContent{}
	}

	if content.Format != event.FormatHTML {
		content.FormattedBody = strings.Replace(html.EscapeString(content.Body), "\n", "<br/>", -1)
		content.Format = event.FormatHTML
	}
	data, err := portal.bridge.Config.Bridge.Relay.FormatMessage(content, sender.MXID, *member)
	if err != nil {
		portal.log.Errorln("Failed to apply relaybot format:", err)
	}
	content.FormattedBody = data
	return true
}

func addCodecToMime(mimeType, codec string) string {
	mediaType, params, err := mime.ParseMediaType(mimeType)
	if err != nil {
		return mimeType
	}
	if _, ok := params["codecs"]; !ok {
		params["codecs"] = codec
	}
	return mime.FormatMediaType(mediaType, params)
}

func parseGeoURI(uri string) (lat, long float64, err error) {
	if !strings.HasPrefix(uri, "geo:") {
		err = fmt.Errorf("uri doesn't have geo: prefix")
		return
	}
	// Remove geo: prefix and anything after ;
	coordinates := strings.Split(strings.TrimPrefix(uri, "geo:"), ";")[0]

	if splitCoordinates := strings.Split(coordinates, ","); len(splitCoordinates) != 2 {
		err = fmt.Errorf("didn't find exactly two numbers separated by a comma")
	} else if lat, err = strconv.ParseFloat(splitCoordinates[0], 64); err != nil {
		err = fmt.Errorf("latitude is not a number: %w", err)
	} else if long, err = strconv.ParseFloat(splitCoordinates[1], 64); err != nil {
		err = fmt.Errorf("longitude is not a number: %w", err)
	}
	return
}

func getUnstableWaveform(content map[string]interface{}) []byte {
	audioInfo, ok := content["org.matrix.msc1767.audio"].(map[string]interface{})
	if !ok {
		return nil
	}
	waveform, ok := audioInfo["waveform"].([]interface{})
	if !ok {
		return nil
	}
	output := make([]byte, len(waveform))
	var val float64
	for i, part := range waveform {
		val, ok = part.(float64)
		if ok {
			output[i] = byte(val / 4)
		}
	}
	return output
}

func (portal *Portal) convertMatrixMessage(sender *User, evt *event.Event) (*waProto.Message, *User) {
	content, ok := evt.Content.Parsed.(*event.MessageEventContent)
	if !ok {
		portal.log.Debugfln("Failed to handle event %s: unexpected parsed content type %T", evt.ID, evt.Content.Parsed)
		return nil, sender
	}

	var msg waProto.Message
	var ctxInfo waProto.ContextInfo
	replyToID := content.GetReplyTo()
	if len(replyToID) > 0 {
		replyToMsg := portal.bridge.DB.Message.GetByMXID(replyToID)
		if replyToMsg != nil && !replyToMsg.IsFakeJID() && replyToMsg.Type == database.MsgNormal {
			ctxInfo.StanzaId = &replyToMsg.JID
			ctxInfo.Participant = proto.String(replyToMsg.Sender.ToNonAD().String())
			// Using blank content here seems to work fine on all official WhatsApp apps.
			//
			// We could probably invent a slightly more accurate version of the quoted message
			// by fetching the Matrix event and converting it to the WhatsApp format, but that's
			// a lot of work and this works fine.
			ctxInfo.QuotedMessage = &waProto.Message{Conversation: proto.String("")}
		}
	}
	if portal.ExpirationTime != 0 {
		ctxInfo.Expiration = proto.Uint32(portal.ExpirationTime)
	}
	relaybotFormatted := false
	if !sender.IsLoggedIn() || (portal.IsPrivateChat() && sender.JID.User != portal.Key.Receiver.User) {
		if !portal.HasRelaybot() {
			portal.log.Warnln("Ignoring message from", sender.MXID, "in chat with no relaybot (convertMatrixMessage)")
			return nil, sender
		}
		relaybotFormatted = portal.addRelaybotFormat(sender, content)
		sender = portal.GetRelayUser()
	}
	if evt.Type == event.EventSticker {
		content.MsgType = event.MsgImage
	}
	if content.MsgType == event.MsgImage && content.GetInfo().MimeType == "image/gif" {
		content.MsgType = event.MsgVideo
	}

	switch content.MsgType {
	case event.MsgText, event.MsgEmote, event.MsgNotice:
		text := content.Body
		if content.MsgType == event.MsgNotice && !portal.bridge.Config.Bridge.BridgeNotices {
			return nil, sender
		}
		if content.Format == event.FormatHTML {
			text, ctxInfo.MentionedJid = portal.bridge.Formatter.ParseMatrix(content.FormattedBody)
		}
		if content.MsgType == event.MsgEmote && !relaybotFormatted {
			text = "/me " + text
		}
		msg.ExtendedTextMessage = &waProto.ExtendedTextMessage{
			Text:        &text,
			ContextInfo: &ctxInfo,
		}
		hasPreview := portal.convertURLPreviewToWhatsApp(sender, evt, msg.ExtendedTextMessage)
		if ctxInfo.StanzaId == nil && ctxInfo.MentionedJid == nil && ctxInfo.Expiration == nil && !hasPreview {
			// No need for extended message
			msg.ExtendedTextMessage = nil
			msg.Conversation = &text
		}
	case event.MsgImage:
		media := portal.preprocessMatrixMedia(sender, relaybotFormatted, content, evt.ID, whatsmeow.MediaImage)
		if media == nil {
			return nil, sender
		}
		ctxInfo.MentionedJid = media.MentionedJIDs
		msg.ImageMessage = &waProto.ImageMessage{
			ContextInfo:   &ctxInfo,
			Caption:       &media.Caption,
			JpegThumbnail: media.Thumbnail,
			Url:           &media.URL,
			MediaKey:      media.MediaKey,
			Mimetype:      &content.GetInfo().MimeType,
			FileEncSha256: media.FileEncSHA256,
			FileSha256:    media.FileSHA256,
			FileLength:    proto.Uint64(uint64(media.FileLength)),
		}
	case event.MsgVideo:
		gifPlayback := content.GetInfo().MimeType == "image/gif"
		media := portal.preprocessMatrixMedia(sender, relaybotFormatted, content, evt.ID, whatsmeow.MediaVideo)
		if media == nil {
			return nil, sender
		}
		duration := uint32(content.GetInfo().Duration / 1000)
		ctxInfo.MentionedJid = media.MentionedJIDs
		msg.VideoMessage = &waProto.VideoMessage{
			ContextInfo:   &ctxInfo,
			Caption:       &media.Caption,
			JpegThumbnail: media.Thumbnail,
			Url:           &media.URL,
			MediaKey:      media.MediaKey,
			Mimetype:      &content.GetInfo().MimeType,
			GifPlayback:   &gifPlayback,
			Seconds:       &duration,
			FileEncSha256: media.FileEncSHA256,
			FileSha256:    media.FileSHA256,
			FileLength:    proto.Uint64(uint64(media.FileLength)),
		}
	case event.MsgAudio:
		media := portal.preprocessMatrixMedia(sender, relaybotFormatted, content, evt.ID, whatsmeow.MediaAudio)
		if media == nil {
			return nil, sender
		}
		duration := uint32(content.GetInfo().Duration / 1000)
		msg.AudioMessage = &waProto.AudioMessage{
			ContextInfo:   &ctxInfo,
			Url:           &media.URL,
			MediaKey:      media.MediaKey,
			Mimetype:      &content.GetInfo().MimeType,
			Seconds:       &duration,
			FileEncSha256: media.FileEncSHA256,
			FileSha256:    media.FileSHA256,
			FileLength:    proto.Uint64(uint64(media.FileLength)),
		}
		_, isMSC3245Voice := evt.Content.Raw["org.matrix.msc3245.voice"]
		if isMSC3245Voice {
			msg.AudioMessage.Waveform = getUnstableWaveform(evt.Content.Raw)
			msg.AudioMessage.Ptt = proto.Bool(true)
			// hacky hack to add the codecs param that whatsapp seems to require
			msg.AudioMessage.Mimetype = proto.String(addCodecToMime(content.GetInfo().MimeType, "opus"))
		}
	case event.MsgFile:
		media := portal.preprocessMatrixMedia(sender, relaybotFormatted, content, evt.ID, whatsmeow.MediaDocument)
		if media == nil {
			return nil, sender
		}
		msg.DocumentMessage = &waProto.DocumentMessage{
			ContextInfo:   &ctxInfo,
			JpegThumbnail: media.Thumbnail,
			Url:           &media.URL,
			Title:         &content.Body,
			FileName:      &content.Body,
			MediaKey:      media.MediaKey,
			Mimetype:      &content.GetInfo().MimeType,
			FileEncSha256: media.FileEncSHA256,
			FileSha256:    media.FileSHA256,
			FileLength:    proto.Uint64(uint64(media.FileLength)),
		}
	case event.MsgLocation:
		lat, long, err := parseGeoURI(content.GeoURI)
		if err != nil {
			portal.log.Debugfln("Invalid geo URI on Matrix event %s: %v", evt.ID, err)
			return nil, sender
		}
		msg.LocationMessage = &waProto.LocationMessage{
			DegreesLatitude:  &lat,
			DegreesLongitude: &long,
			Comment:          &content.Body,
			ContextInfo:      &ctxInfo,
		}
	default:
		portal.log.Debugfln("Unhandled Matrix event %s: unknown msgtype %s", evt.ID, content.MsgType)
		return nil, sender
	}
	return &msg, sender
}

func (portal *Portal) sendErrorMessage(message string, confirmed bool) id.EventID {
	certainty := "may not have been"
	if confirmed {
		certainty = "was not"
	}
	resp, err := portal.sendMainIntentMessage(&event.MessageEventContent{
		MsgType: event.MsgNotice,
		Body:    fmt.Sprintf("\u26a0 Your message %s bridged: %v", certainty, message),
	})
	if err != nil {
		portal.log.Warnfln("Failed to send bridging error message:", err)
		return ""
	}
	return resp.EventID
}

func (portal *Portal) sendDeliveryReceipt(eventID id.EventID) {
	if portal.bridge.Config.Bridge.DeliveryReceipts {
		err := portal.bridge.Bot.MarkRead(portal.MXID, eventID)
		if err != nil {
			portal.log.Debugfln("Failed to send delivery receipt for %s: %v", eventID, err)
		}
	}
}

func (portal *Portal) generateMessageInfo(sender *User) *types.MessageInfo {
	return &types.MessageInfo{
		ID:        whatsmeow.GenerateMessageID(),
		Timestamp: time.Now(),
		MessageSource: types.MessageSource{
			Sender:   sender.JID,
			Chat:     portal.Key.JID,
			IsFromMe: true,
			IsGroup:  portal.Key.JID.Server == types.GroupServer || portal.Key.JID.Server == types.BroadcastServer,
		},
	}
}

func (portal *Portal) HandleMatrixMessage(sender *User, evt *event.Event) {
	if !portal.canBridgeFrom(sender, "message") {
		return
	}
	portal.log.Debugfln("Received event %s from %s", evt.ID, evt.Sender)
	msg, sender := portal.convertMatrixMessage(sender, evt)
	if msg == nil {
		return
	}
	portal.MarkDisappearing(evt.ID, portal.ExpirationTime, true)
	info := portal.generateMessageInfo(sender)
	dbMsg := portal.markHandled(nil, info, evt.ID, false, true, database.MsgNormal, database.MsgNoError)
	portal.log.Debugln("Sending event", evt.ID, "to WhatsApp", info.ID)
	ts, err := sender.Client.SendMessage(portal.Key.JID, info.ID, msg)
	if err != nil {
		portal.log.Errorfln("Error sending message: %v", err)
		portal.sendErrorMessage(err.Error(), true)
		status := appservice.StatusPermFailure
		if errors.Is(err, whatsmeow.ErrBroadcastListUnsupported) {
			status = appservice.StatusUnsupported
		}
		checkpoint := appservice.NewMessageSendCheckpoint(evt, appservice.StepRemote, status, 0)
		checkpoint.Info = err.Error()
		go checkpoint.Send(portal.bridge.AS)
	} else {
		portal.log.Debugfln("Handled Matrix event %s", evt.ID)
		portal.bridge.AS.SendMessageSendCheckpoint(evt, appservice.StepRemote, 0)
		portal.sendDeliveryReceipt(evt.ID)
		dbMsg.MarkSent(ts)
	}
}

func (portal *Portal) HandleMatrixReaction(sender *User, evt *event.Event) {
	portal.log.Debugfln("Received reaction event %s from %s", evt.ID, evt.Sender)
	err := portal.handleMatrixReaction(sender, evt)
	if err != nil {
		portal.log.Errorfln("Error sending reaction %s: %v", evt.ID, err)
		portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, err, true, 0)
	} else {
		portal.log.Debugfln("Handled Matrix reaction %s", evt.ID)
		portal.bridge.AS.SendMessageSendCheckpoint(evt, appservice.StepRemote, 0)
		portal.sendDeliveryReceipt(evt.ID)
	}
}

func (portal *Portal) handleMatrixReaction(sender *User, evt *event.Event) error {
	content, ok := evt.Content.Parsed.(*event.ReactionEventContent)
	if !ok {
		return fmt.Errorf("unexpected parsed content type %T", evt.Content.Parsed)
	}
	target := portal.bridge.DB.Message.GetByMXID(content.RelatesTo.EventID)
	if target == nil || target.Type == database.MsgReaction {
		return fmt.Errorf("unknown target event %s", content.RelatesTo.EventID)
	}
	info := portal.generateMessageInfo(sender)
	dbMsg := portal.markHandled(nil, info, evt.ID, false, true, database.MsgReaction, database.MsgNoError)
	portal.upsertReaction(nil, target.JID, sender.JID, evt.ID, info.ID)
	portal.log.Debugln("Sending reaction", evt.ID, "to WhatsApp", info.ID)
	ts, err := portal.sendReactionToWhatsApp(sender, info.ID, target, content.RelatesTo.Key, evt.Timestamp)
	if err != nil {
		dbMsg.MarkSent(ts)
	}
	return err
}

func (portal *Portal) sendReactionToWhatsApp(sender *User, id types.MessageID, target *database.Message, key string, timestamp int64) (time.Time, error) {
	var messageKeyParticipant *string
	if !portal.IsPrivateChat() {
		messageKeyParticipant = proto.String(target.Sender.ToNonAD().String())
	}
	key = variationselector.Remove(key)
	return sender.Client.SendMessage(portal.Key.JID, id, &waProto.Message{
		ReactionMessage: &waProto.ReactionMessage{
			Key: &waProto.MessageKey{
				RemoteJid:   proto.String(portal.Key.JID.String()),
				FromMe:      proto.Bool(target.Sender.User == sender.JID.User),
				Id:          proto.String(target.JID),
				Participant: messageKeyParticipant,
			},
			Text:              proto.String(key),
			GroupingKey:       proto.String(key), // TODO is this correct?
			SenderTimestampMs: proto.Int64(timestamp),
		},
	})
}

func (portal *Portal) upsertReaction(intent *appservice.IntentAPI, targetJID types.MessageID, senderJID types.JID, mxid id.EventID, jid types.MessageID) {
	dbReaction := portal.bridge.DB.Reaction.GetByTargetJID(portal.Key, targetJID, senderJID)
	if dbReaction == nil {
		dbReaction = portal.bridge.DB.Reaction.New()
		dbReaction.Chat = portal.Key
		dbReaction.TargetJID = targetJID
		dbReaction.Sender = senderJID
	} else {
		portal.log.Debugfln("Redacting old Matrix reaction %s after new one (%s) was sent", dbReaction.MXID, mxid)
		var err error
		if intent != nil {
			extra := make(map[string]interface{})
			if intent.IsCustomPuppet {
				extra[doublePuppetKey] = doublePuppetValue
			}
			_, err = intent.RedactEvent(portal.MXID, dbReaction.MXID, mautrix.ReqRedact{Extra: extra})
		}
		if intent == nil || errors.Is(err, mautrix.MForbidden) {
			_, err = portal.MainIntent().RedactEvent(portal.MXID, dbReaction.MXID)
		}
		if err != nil {
			portal.log.Warnfln("Failed to remove old reaction %s: %v", dbReaction.MXID, err)
		}
	}
	dbReaction.MXID = mxid
	dbReaction.JID = jid
	dbReaction.Upsert()
}

func (portal *Portal) HandleMatrixRedaction(sender *User, evt *event.Event) {
	if !portal.canBridgeFrom(sender, "redaction") {
		return
	}
	portal.log.Debugfln("Received redaction %s from %s", evt.ID, evt.Sender)

	senderLogIdentifier := sender.MXID
	if !sender.HasSession() {
		sender = portal.GetRelayUser()
		senderLogIdentifier += " (through relaybot)"
	}

	msg := portal.bridge.DB.Message.GetByMXID(evt.Redacts)
	if msg == nil {
		portal.log.Debugfln("Ignoring redaction %s of unknown event by %s", evt.ID, senderLogIdentifier)
		portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, errors.New("target not found"), true, 0)
		return
	} else if msg.IsFakeJID() {
		portal.log.Debugfln("Ignoring redaction %s of fake event by %s", evt.ID, senderLogIdentifier)
		portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, errors.New("target is a fake event"), true, 0)
		return
	} else if msg.Sender.User != sender.JID.User {
		portal.log.Debugfln("Ignoring redaction %s of %s/%s by %s: message was sent by someone else (%s, not %s)", evt.ID, msg.MXID, msg.JID, senderLogIdentifier, msg.Sender, sender.JID)
		portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, errors.New("message was sent by someone else"), true, 0)
		return
	}

	var err error
	if msg.Type == database.MsgReaction {
		if reaction := portal.bridge.DB.Reaction.GetByMXID(evt.Redacts); reaction == nil {
			portal.log.Debugfln("Ignoring redaction of reaction %s: reaction database entry not found", evt.ID)
			portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, errors.New("reaction database entry not found"), true, 0)
			return
		} else if reactionTarget := reaction.GetTarget(); reactionTarget == nil {
			portal.log.Debugfln("Ignoring redaction of reaction %s: reaction target message not found", evt.ID)
			portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, errors.New("reaction target message not found"), true, 0)
			return
		} else {
			portal.log.Debugfln("Sending redaction reaction %s of %s/%s to WhatsApp", evt.ID, msg.MXID, msg.JID)
			_, err = portal.sendReactionToWhatsApp(sender, "", reactionTarget, "", evt.Timestamp)
		}
	} else {
		portal.log.Debugfln("Sending redaction %s of %s/%s to WhatsApp", evt.ID, msg.MXID, msg.JID)
		_, err = sender.Client.RevokeMessage(portal.Key.JID, msg.JID)
	}
	if err != nil {
		portal.log.Errorfln("Error handling Matrix redaction %s: %v", evt.ID, err)
		portal.bridge.AS.SendErrorMessageSendCheckpoint(evt, appservice.StepRemote, err, true, 0)
	} else {
		portal.log.Debugfln("Handled Matrix redaction %s of %s", evt.ID, evt.Redacts)
		portal.bridge.AS.SendMessageSendCheckpoint(evt, appservice.StepRemote, 0)
		portal.sendDeliveryReceipt(evt.ID)
	}
}

func (portal *Portal) HandleMatrixReadReceipt(sender *User, eventID id.EventID, receiptTimestamp time.Time, isExplicit bool) {
	if !sender.IsLoggedIn() {
		if isExplicit {
			portal.log.Debugfln("Ignoring read receipt by %s: user is not connected to WhatsApp", sender.JID)
		}
		return
	}

	maxTimestamp := receiptTimestamp
	// Implicit read receipts don't have an event ID that's already bridged
	if isExplicit {
		if message := portal.bridge.DB.Message.GetByMXID(eventID); message != nil {
			maxTimestamp = message.Timestamp
		}
	}

	prevTimestamp := sender.GetLastReadTS(portal.Key)
	lastReadIsZero := false
	if prevTimestamp.IsZero() {
		prevTimestamp = maxTimestamp.Add(-2 * time.Second)
		lastReadIsZero = true
	}

	messages := portal.bridge.DB.Message.GetMessagesBetween(portal.Key, prevTimestamp, maxTimestamp)
	if len(messages) > 0 {
		sender.SetLastReadTS(portal.Key, messages[len(messages)-1].Timestamp)
	}
	groupedMessages := make(map[types.JID][]types.MessageID)
	for _, msg := range messages {
		var key types.JID
		if msg.IsFakeJID() || msg.Sender.User == sender.JID.User {
			// Don't send read receipts for own messages or fake messages
			continue
		} else if !portal.IsPrivateChat() {
			key = msg.Sender
		} else if !msg.BroadcastListJID.IsEmpty() {
			key = msg.BroadcastListJID
		} // else: blank key (participant field isn't needed in direct chat read receipts)
		groupedMessages[key] = append(groupedMessages[key], msg.JID)
	}
	// For explicit read receipts, log even if there are no targets. For implicit ones only log when there are targets
	if len(groupedMessages) > 0 || isExplicit {
		portal.log.Debugfln("Sending read receipts by %s (last read: %d, was zero: %t, explicit: %t): %v",
			sender.JID, prevTimestamp.Unix(), lastReadIsZero, isExplicit, groupedMessages)
	}
	for messageSender, ids := range groupedMessages {
		chatJID := portal.Key.JID
		if messageSender.Server == types.BroadcastServer {
			chatJID = messageSender
			messageSender = portal.Key.JID
		}
		err := sender.Client.MarkRead(ids, receiptTimestamp, chatJID, messageSender)
		if err != nil {
			portal.log.Warnfln("Failed to mark %v as read by %s: %v", ids, sender.JID, err)
		}
	}
	if isExplicit {
		portal.ScheduleDisappearing()
	}
}

func typingDiff(prev, new []id.UserID) (started, stopped []id.UserID) {
OuterNew:
	for _, userID := range new {
		for _, previousUserID := range prev {
			if userID == previousUserID {
				continue OuterNew
			}
		}
		started = append(started, userID)
	}
OuterPrev:
	for _, userID := range prev {
		for _, previousUserID := range new {
			if userID == previousUserID {
				continue OuterPrev
			}
		}
		stopped = append(stopped, userID)
	}
	return
}

func (portal *Portal) setTyping(userIDs []id.UserID, state types.ChatPresence) {
	for _, userID := range userIDs {
		user := portal.bridge.GetUserByMXIDIfExists(userID)
		if user == nil || !user.IsLoggedIn() {
			continue
		}
		portal.log.Debugfln("Bridging typing change from %s to chat presence %s", state, user.MXID)
		err := user.Client.SendChatPresence(portal.Key.JID, state, types.ChatPresenceMediaText)
		if err != nil {
			portal.log.Warnln("Error sending chat presence:", err)
		}
		if portal.bridge.Config.Bridge.SendPresenceOnTyping {
			err = user.Client.SendPresence(types.PresenceAvailable)
			if err != nil {
				user.log.Warnln("Failed to set presence:", err)
			}
		}
	}
}

func (portal *Portal) HandleMatrixTyping(newTyping []id.UserID) {
	portal.currentlyTypingLock.Lock()
	defer portal.currentlyTypingLock.Unlock()
	startedTyping, stoppedTyping := typingDiff(portal.currentlyTyping, newTyping)
	portal.currentlyTyping = newTyping
	portal.setTyping(startedTyping, types.ChatPresenceComposing)
	portal.setTyping(stoppedTyping, types.ChatPresencePaused)
}

func (portal *Portal) canBridgeFrom(sender *User, evtType string) bool {
	if !sender.IsLoggedIn() {
		if portal.HasRelaybot() {
			return true
		} else if sender.Session != nil {
			portal.log.Debugfln("Ignoring %s from %s as user is not connected", evtType, sender.MXID)
			msg := format.RenderMarkdown(fmt.Sprintf("\u26a0 You are not connected to WhatsApp, so your %s was not bridged.", evtType), true, false)
			msg.MsgType = event.MsgNotice
			_, err := portal.sendMainIntentMessage(&msg)
			if err != nil {
				portal.log.Errorln("Failed to send bridging failure message:", err)
			}
		} else {
			portal.log.Debugfln("Ignoring %s from non-logged-in user %s in chat with no relay user", evtType, sender.MXID)
		}
		return false
	} else if portal.IsPrivateChat() && sender.JID.User != portal.Key.Receiver.User && !portal.HasRelaybot() {
		portal.log.Debugfln("Ignoring %s from different user %s/%s in private chat with no relay user", evtType, sender.MXID, sender.JID)
		return false
	}
	return true
}

func (portal *Portal) Delete() {
	portal.Portal.Delete()
	portal.bridge.portalsLock.Lock()
	delete(portal.bridge.portalsByJID, portal.Key)
	if len(portal.MXID) > 0 {
		delete(portal.bridge.portalsByMXID, portal.MXID)
	}
	portal.bridge.portalsLock.Unlock()
}

func (portal *Portal) GetMatrixUsers() ([]id.UserID, error) {
	members, err := portal.MainIntent().JoinedMembers(portal.MXID)
	if err != nil {
		return nil, fmt.Errorf("failed to get member list: %w", err)
	}
	var users []id.UserID
	for userID := range members.Joined {
		_, isPuppet := portal.bridge.ParsePuppetMXID(userID)
		if !isPuppet && userID != portal.bridge.Bot.UserID {
			users = append(users, userID)
		}
	}
	return users, nil
}

func (portal *Portal) CleanupIfEmpty() {
	users, err := portal.GetMatrixUsers()
	if err != nil {
		portal.log.Errorfln("Failed to get Matrix user list to determine if portal needs to be cleaned up: %v", err)
		return
	}

	if len(users) == 0 {
		portal.log.Infoln("Room seems to be empty, cleaning up...")
		portal.Delete()
		portal.Cleanup(false)
	}
}

func (portal *Portal) Cleanup(puppetsOnly bool) {
	if len(portal.MXID) == 0 {
		return
	}
	if portal.IsPrivateChat() {
		_, err := portal.MainIntent().LeaveRoom(portal.MXID)
		if err != nil {
			portal.log.Warnln("Failed to leave private chat portal with main intent:", err)
		}
		return
	}
	intent := portal.MainIntent()
	members, err := intent.JoinedMembers(portal.MXID)
	if err != nil {
		portal.log.Errorln("Failed to get portal members for cleanup:", err)
		return
	}
	for member := range members.Joined {
		if member == intent.UserID {
			continue
		}
		puppet := portal.bridge.GetPuppetByMXID(member)
		if puppet != nil {
			_, err = puppet.DefaultIntent().LeaveRoom(portal.MXID)
			if err != nil {
				portal.log.Errorln("Error leaving as puppet while cleaning up portal:", err)
			}
		} else if !puppetsOnly {
			_, err = intent.KickUser(portal.MXID, &mautrix.ReqKickUser{UserID: member, Reason: "Deleting portal"})
			if err != nil {
				portal.log.Errorln("Error kicking user while cleaning up portal:", err)
			}
		}
	}
	_, err = intent.LeaveRoom(portal.MXID)
	if err != nil {
		portal.log.Errorln("Error leaving with main intent while cleaning up portal:", err)
	}
}

func (portal *Portal) HandleMatrixLeave(sender *User) {
	if portal.IsPrivateChat() {
		portal.log.Debugln("User left private chat portal, cleaning up and deleting...")
		portal.Delete()
		portal.Cleanup(false)
		return
	} else if portal.bridge.Config.Bridge.BridgeMatrixLeave {
		err := sender.Client.LeaveGroup(portal.Key.JID)
		if err != nil {
			portal.log.Errorfln("Failed to leave group as %s: %v", sender.MXID, err)
			return
		}
		//portal.log.Infoln("Leave response:", <-resp)
	}
	portal.CleanupIfEmpty()
}

func (portal *Portal) HandleMatrixKick(sender *User, target *Puppet) {
	_, err := sender.Client.UpdateGroupParticipants(portal.Key.JID, map[types.JID]whatsmeow.ParticipantChange{
		target.JID: whatsmeow.ParticipantChangeRemove,
	})
	if err != nil {
		portal.log.Errorfln("Failed to kick %s from group as %s: %v", target.JID, sender.MXID, err)
		return
	}
	//portal.log.Infoln("Kick %s response: %s", puppet.JID, <-resp)
}

func (portal *Portal) HandleMatrixInvite(sender *User, target *Puppet) {
	_, err := sender.Client.UpdateGroupParticipants(portal.Key.JID, map[types.JID]whatsmeow.ParticipantChange{
		target.JID: whatsmeow.ParticipantChangeAdd,
	})
	if err != nil {
		portal.log.Errorfln("Failed to add %s to group as %s: %v", target.JID, sender.MXID, err)
		return
	}
	//portal.log.Infofln("Add %s response: %s", puppet.JID, <-resp)
}

func (portal *Portal) HandleMatrixMeta(sender *User, evt *event.Event) {
	switch content := evt.Content.Parsed.(type) {
	case *event.RoomNameEventContent:
		if content.Name == portal.Name {
			return
		}
		portal.Name = content.Name
		err := sender.Client.SetGroupName(portal.Key.JID, content.Name)
		if err != nil {
			portal.log.Errorln("Failed to update group name:", err)
		}
	case *event.TopicEventContent:
		if content.Topic == portal.Topic {
			return
		}
		portal.Topic = content.Topic
		err := sender.Client.SetGroupTopic(portal.Key.JID, "", "", content.Topic)
		if err != nil {
			portal.log.Errorln("Failed to update group description:", err)
		}
	case *event.RoomAvatarEventContent:
		portal.avatarLock.Lock()
		defer portal.avatarLock.Unlock()
		if content.URL == portal.AvatarURL || (content.URL.IsEmpty() && portal.Avatar == "remove") {
			return
		}
		var data []byte
		var err error
		if !content.URL.IsEmpty() {
			data, err = portal.MainIntent().DownloadBytes(content.URL)
			if err != nil {
				portal.log.Errorfln("Failed to download updated avatar %s: %v", content.URL, err)
				return
			}
			portal.log.Debugfln("%s set the group avatar to %s", sender.MXID, content.URL)
		} else {
			portal.log.Debugfln("%s removed the group avatar", sender.MXID)
		}
		newID, err := sender.Client.SetGroupPhoto(portal.Key.JID, data)
		if err != nil {
			portal.log.Errorfln("Failed to update group avatar: %v", err)
			return
		}
		portal.log.Debugfln("Successfully updated group avatar to %s", newID)
		portal.Avatar = newID
		portal.AvatarURL = content.URL
		portal.UpdateBridgeInfo()
		portal.Update()
	}
}