Sumner Evans
361 lines
10 KiB
Go
361 lines
10 KiB
Go
package connector
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import (
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"context"
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"errors"
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"fmt"
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"strings"
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"sync"
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"github.com/gotd/td/telegram"
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"github.com/gotd/td/telegram/updates"
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"github.com/gotd/td/tg"
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"github.com/rs/zerolog"
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"go.mau.fi/zerozap"
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"go.uber.org/zap"
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"maunium.net/go/mautrix/bridgev2"
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"maunium.net/go/mautrix/bridgev2/networkid"
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"go.mau.fi/mautrix-telegram/pkg/connector/ids"
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"go.mau.fi/mautrix-telegram/pkg/connector/media"
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"go.mau.fi/mautrix-telegram/pkg/connector/msgconv"
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"go.mau.fi/mautrix-telegram/pkg/connector/util"
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)
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type TelegramClient struct {
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main *TelegramConnector
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telegramUserID int64
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loginID networkid.UserLoginID
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userID networkid.UserID
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userLogin *bridgev2.UserLogin
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client *telegram.Client
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clientCancel context.CancelFunc
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msgConv *msgconv.MessageConverter
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reactionMessageLocks map[int]*sync.Mutex
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appConfig map[string]any
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appConfigHash int
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}
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var (
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_ bridgev2.NetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.EditHandlingNetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.ReactionHandlingNetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.RedactionHandlingNetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.ReadReceiptHandlingNetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.ReadReceiptHandlingNetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.TypingHandlingNetworkAPI = (*TelegramClient)(nil)
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// _ bridgev2.IdentifierResolvingNetworkAPI = (*TelegramClient)(nil)
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// _ bridgev2.GroupCreatingNetworkAPI = (*TelegramClient)(nil)
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// _ bridgev2.ContactListingNetworkAPI = (*TelegramClient)(nil)
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)
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type UpdateDispatcher struct {
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tg.UpdateDispatcher
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EntityHandler func(context.Context, tg.Entities) error
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}
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func (u UpdateDispatcher) Handle(ctx context.Context, updates tg.UpdatesClass) error {
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var e tg.Entities
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switch u := updates.(type) {
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case *tg.Updates:
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e.Users = u.MapUsers().NotEmptyToMap()
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chats := u.MapChats()
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e.Chats = chats.ChatToMap()
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e.Channels = chats.ChannelToMap()
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case *tg.UpdatesCombined:
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e.Users = u.MapUsers().NotEmptyToMap()
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chats := u.MapChats()
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e.Chats = chats.ChatToMap()
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e.Channels = chats.ChannelToMap()
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}
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if u.EntityHandler != nil {
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u.EntityHandler(ctx, e)
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}
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return u.UpdateDispatcher.Handle(ctx, updates)
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}
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func NewTelegramClient(ctx context.Context, tc *TelegramConnector, login *bridgev2.UserLogin) (*TelegramClient, error) {
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telegramUserID, err := ids.ParseUserLoginID(login.ID)
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if err != nil {
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return nil, err
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}
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log := zerolog.Ctx(ctx).With().
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Str("component", "telegram_client").
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Str("user_login_id", string(login.ID)).
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Logger()
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zaplog := zap.New(zerozap.New(log))
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client := TelegramClient{
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main: tc,
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telegramUserID: telegramUserID,
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loginID: login.ID,
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userID: networkid.UserID(login.ID),
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userLogin: login,
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}
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dispatcher := UpdateDispatcher{
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UpdateDispatcher: tg.NewUpdateDispatcher(),
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EntityHandler: client.onEntityUpdate,
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}
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dispatcher.OnNewMessage(client.onUpdateNewMessage)
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dispatcher.OnNewChannelMessage(client.onUpdateNewChannelMessage)
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dispatcher.OnUserName(client.onUserName)
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dispatcher.OnDeleteMessages(client.onDeleteMessages)
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dispatcher.OnEditMessage(client.onMessageEdit)
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store := tc.Store.GetScopedStore(telegramUserID)
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updatesManager := updates.New(updates.Config{
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OnChannelTooLong: func(channelID int64) {
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log.Error().Int64("channel_id", channelID).Msg("OnChannelTooLong")
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panic("unimplemented channel too long")
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},
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Handler: dispatcher,
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Logger: zaplog.Named("gaps"),
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Storage: store,
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AccessHasher: store,
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})
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client.client = telegram.NewClient(tc.Config.AppID, tc.Config.AppHash, telegram.Options{
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SessionStorage: store,
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Logger: zaplog,
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UpdateHandler: updatesManager,
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})
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client.msgConv = msgconv.NewMessageConverter(client.client, tc.Bridge.Matrix, tc.Store, tc.Config.AnimatedSticker, tc.useDirectMedia)
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client.clientCancel, err = connectTelegramClient(ctx, client.client)
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client.reactionMessageLocks = map[int]*sync.Mutex{}
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go func() {
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err = updatesManager.Run(ctx, client.client.API(), telegramUserID, updates.AuthOptions{})
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if err != nil {
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log.Err(err).Msg("updates manager error")
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client.clientCancel()
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}
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}()
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return &client, err
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}
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// connectTelegramClient blocks until client is connected, calling Run
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// internally.
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// Technique from: https://github.com/gotd/contrib/blob/master/bg/connect.go
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func connectTelegramClient(ctx context.Context, client *telegram.Client) (context.CancelFunc, error) {
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ctx, cancel := context.WithCancel(ctx)
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errC := make(chan error, 1)
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initDone := make(chan struct{})
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go func() {
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defer close(errC)
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errC <- client.Run(ctx, func(ctx context.Context) error {
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close(initDone)
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<-ctx.Done()
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if errors.Is(ctx.Err(), context.Canceled) {
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return nil
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}
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return ctx.Err()
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})
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}()
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select {
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case <-ctx.Done(): // context canceled
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cancel()
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return func() {}, ctx.Err()
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case err := <-errC: // startup timeout
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cancel()
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return func() {}, err
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case <-initDone: // init done
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}
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return cancel, nil
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}
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func (t *TelegramClient) Connect(ctx context.Context) (err error) {
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t.clientCancel, err = connectTelegramClient(ctx, t.client)
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return
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}
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func (t *TelegramClient) Disconnect() {
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t.clientCancel()
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}
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func (t *TelegramClient) GetChatInfo(ctx context.Context, portal *bridgev2.Portal) (*bridgev2.ChatInfo, error) {
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fmt.Printf("%+v\n", portal)
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peerType, id, err := ids.ParsePortalID(portal.ID)
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if err != nil {
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return nil, err
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}
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var name string
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memberList := &bridgev2.ChatMemberList{
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IsFull: true, // TODO not true for channels
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}
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var isSpace, isDM bool
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var avatar *bridgev2.Avatar
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switch peerType {
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case ids.PeerTypeUser:
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users, err := t.client.API().UsersGetUsers(ctx, []tg.InputUserClass{&tg.InputUser{UserID: id}})
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if err != nil {
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return nil, err
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}
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if len(users) == 0 {
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return nil, fmt.Errorf("failed to get user info for user %d", id)
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}
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if user, ok := users[0].(*tg.User); !ok {
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return nil, fmt.Errorf("returned user is not *tg.User")
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} else {
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name = util.FormatFullName(user.FirstName, user.LastName) // TODO gate this behind a config?
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memberList.Members = []bridgev2.ChatMember{
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{
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EventSender: bridgev2.EventSender{
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SenderLogin: ids.MakeUserLoginID(id),
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Sender: ids.MakeUserID(id),
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},
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},
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{
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EventSender: bridgev2.EventSender{
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IsFromMe: true,
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SenderLogin: t.loginID,
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Sender: t.userID,
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},
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},
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}
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isDM = true
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}
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case ids.PeerTypeChat:
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fullChat, err := t.client.API().MessagesGetFullChat(ctx, id)
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if err != nil {
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return nil, err
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}
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for _, c := range fullChat.Chats {
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if c.GetID() == id {
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name = c.(*tg.Chat).Title
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break
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}
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}
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chatFull, ok := fullChat.FullChat.(*tg.ChatFull)
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if !ok {
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return nil, fmt.Errorf("full chat is not %T", chatFull)
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}
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if photo, ok := chatFull.ChatPhoto.(*tg.Photo); ok {
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avatar = &bridgev2.Avatar{
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ID: ids.MakeAvatarID(photo.ID),
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Get: func(ctx context.Context) (data []byte, err error) {
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data, _, _, _, err = media.DownloadPhoto(ctx, t.client.API(), photo)
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return
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},
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}
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}
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for _, user := range fullChat.Users {
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memberList.Members = append(memberList.Members, bridgev2.ChatMember{
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EventSender: bridgev2.EventSender{
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IsFromMe: user.GetID() == t.telegramUserID,
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SenderLogin: ids.MakeUserLoginID(user.GetID()),
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Sender: ids.MakeUserID(user.GetID()),
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},
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})
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}
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default:
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fmt.Printf("%s %d\n", peerType, id)
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panic("unimplemented getchatinfo")
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}
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return &bridgev2.ChatInfo{
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Name: &name,
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Avatar: avatar,
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Members: memberList,
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IsDirectChat: &isDM,
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IsSpace: &isSpace,
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}, nil
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}
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func (t *TelegramClient) GetUserInfo(ctx context.Context, ghost *bridgev2.Ghost) (*bridgev2.UserInfo, error) {
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id, err := ids.ParseUserID(ghost.ID)
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if err != nil {
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return nil, err
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}
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users, err := t.client.API().UsersGetUsers(ctx, []tg.InputUserClass{&tg.InputUser{UserID: id}})
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if err != nil {
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return nil, err
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}
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if len(users) == 0 {
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return nil, fmt.Errorf("failed to get user info for user %d", id)
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}
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if user, ok := users[0].(*tg.User); !ok {
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return nil, fmt.Errorf("returned user is not *tg.User")
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} else {
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return t.getUserInfoFromTelegramUser(user)
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}
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}
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func (t *TelegramClient) getUserInfoFromTelegramUser(user *tg.User) (*bridgev2.UserInfo, error) {
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var identifiers []string
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for _, username := range user.Usernames {
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identifiers = append(identifiers, fmt.Sprintf("telegram:%s", username.Username))
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}
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if phone, ok := user.GetPhone(); ok {
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identifiers = append(identifiers, fmt.Sprintf("tel:+%s", strings.TrimPrefix(phone, "+")))
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}
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var avatar *bridgev2.Avatar
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if p, ok := user.GetPhoto(); ok && p.TypeID() == tg.UserProfilePhotoTypeID {
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photo := p.(*tg.UserProfilePhoto)
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avatar = &bridgev2.Avatar{
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ID: ids.MakeAvatarID(photo.PhotoID),
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Get: func(ctx context.Context) (data []byte, err error) {
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data, _, err = media.DownloadFileLocation(ctx, t.client.API(), &tg.InputPeerPhotoFileLocation{
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Peer: &tg.InputPeerUser{UserID: user.ID},
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PhotoID: photo.PhotoID,
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Big: true,
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})
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return
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},
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}
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}
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name := util.FormatFullName(user.FirstName, user.LastName)
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return &bridgev2.UserInfo{
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IsBot: &user.Bot,
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Name: &name,
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Avatar: avatar,
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Identifiers: identifiers,
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ExtraUpdates: bridgev2.SimpleMetadataUpdater[*bridgev2.Ghost]("fi.mau.telegram.is_premium", user.Premium),
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}, nil
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}
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func (t *TelegramClient) IsLoggedIn() bool {
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_, err := t.client.Self(context.TODO())
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return err == nil
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}
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func (t *TelegramClient) LogoutRemote(ctx context.Context) {
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_, err := t.client.API().AuthLogOut(ctx)
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if err != nil {
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zerolog.Ctx(ctx).Err(err).Msg("failed to logout on Telegram")
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}
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}
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func (t *TelegramClient) IsThisUser(ctx context.Context, userID networkid.UserID) bool {
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return userID == networkid.UserID(t.userLogin.ID)
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}
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func (t *TelegramClient) GetCapabilities(ctx context.Context, portal *bridgev2.Portal) *bridgev2.NetworkRoomCapabilities {
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return &bridgev2.NetworkRoomCapabilities{
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FormattedText: true,
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UserMentions: true,
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RoomMentions: true, // TODO?
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LocationMessages: true,
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Captions: true,
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Threads: false, // TODO
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Replies: true,
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Edits: true,
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Deletes: true,
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ReadReceipts: true,
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Reactions: true,
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}
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}
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