Sumner Evans
547 lines
18 KiB
Go
547 lines
18 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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"regexp"
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"slices"
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"strconv"
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"strings"
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"sync"
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"time"
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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/util/exsync"
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"go.mau.fi/zerozap"
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"go.uber.org/zap"
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"maunium.net/go/mautrix/bridge/status"
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"maunium.net/go/mautrix/bridgev2"
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"maunium.net/go/mautrix/bridgev2/database"
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"maunium.net/go/mautrix/bridgev2/networkid"
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"maunium.net/go/mautrix/bridgev2/simplevent"
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"maunium.net/go/mautrix/id"
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"go.mau.fi/mautrix-telegram/pkg/connector/ids"
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"go.mau.fi/mautrix-telegram/pkg/connector/matrixfmt"
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"go.mau.fi/mautrix-telegram/pkg/connector/media"
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"go.mau.fi/mautrix-telegram/pkg/connector/store"
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"go.mau.fi/mautrix-telegram/pkg/connector/telegramfmt"
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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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ScopedStore *store.ScopedStore
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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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updatesManager *updates.Manager
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clientCancel context.CancelFunc
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appConfig map[string]any
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appConfigHash int
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telegramFmtParams *telegramfmt.FormatParams
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matrixParser *matrixfmt.HTMLParser
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cachedContacts *tg.ContactsContacts
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cachedContactsHash int64
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takeoutLock sync.Mutex
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takeoutAccepted *exsync.Event
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stopTakeoutTimer *time.Timer
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takeoutDialogsOnce sync.Once
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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.TypingHandlingNetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.BackfillingNetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.BackfillingNetworkAPIWithLimits = (*TelegramClient)(nil)
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_ bridgev2.IdentifierResolvingNetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.ContactListingNetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.UserSearchingNetworkAPI = (*TelegramClient)(nil)
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_ bridgev2.GroupCreatingNetworkAPI = (*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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var messageLinkRegex = regexp.MustCompile(`^https?://t(?:elegram)?\.(?:me|dog)/([A-Za-z][A-Za-z0-9_]{3,31}[A-Za-z0-9]|[Cc]/[0-9]{1,20})/([0-9]{1,20})$`)
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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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takeoutAccepted: exsync.NewEvent(),
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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(func(ctx context.Context, e tg.Entities, update *tg.UpdateNewMessage) error {
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return client.onUpdateNewMessage(ctx, update)
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})
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dispatcher.OnNewChannelMessage(func(ctx context.Context, e tg.Entities, update *tg.UpdateNewChannelMessage) error {
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return client.onUpdateNewMessage(ctx, update)
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})
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dispatcher.OnUserName(client.onUserName)
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dispatcher.OnDeleteMessages(func(ctx context.Context, e tg.Entities, update *tg.UpdateDeleteMessages) error {
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return client.onDeleteMessages(ctx, 0, update)
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})
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dispatcher.OnDeleteChannelMessages(func(ctx context.Context, e tg.Entities, update *tg.UpdateDeleteChannelMessages) error {
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return client.onDeleteMessages(ctx, update.ChannelID, update)
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})
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dispatcher.OnEditMessage(func(ctx context.Context, e tg.Entities, update *tg.UpdateEditMessage) error {
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return client.onMessageEdit(ctx, update)
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})
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dispatcher.OnEditChannelMessage(func(ctx context.Context, e tg.Entities, update *tg.UpdateEditChannelMessage) error {
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return client.onMessageEdit(ctx, update)
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})
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dispatcher.OnUserTyping(func(ctx context.Context, e tg.Entities, update *tg.UpdateUserTyping) error {
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return client.handleTyping(ids.PeerTypeUser.AsPortalKey(update.UserID, login.ID), update.UserID, update.Action)
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})
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dispatcher.OnChatUserTyping(func(ctx context.Context, e tg.Entities, update *tg.UpdateChatUserTyping) error {
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if update.FromID.TypeID() != tg.PeerUserTypeID {
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log.Warn().Str("from_id_type", update.FromID.TypeName()).Msg("unsupported from_id type")
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return nil
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}
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return client.handleTyping(ids.PeerTypeChat.AsPortalKey(update.ChatID, login.ID), update.FromID.(*tg.PeerUser).UserID, update.Action)
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})
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dispatcher.OnChannelUserTyping(func(ctx context.Context, e tg.Entities, update *tg.UpdateChannelUserTyping) error {
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return client.handleTyping(ids.PeerTypeChannel.AsPortalKey(update.ChannelID, ""), update.FromID.(*tg.PeerUser).UserID, update.Action)
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})
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dispatcher.OnReadHistoryOutbox(func(ctx context.Context, e tg.Entities, update *tg.UpdateReadHistoryOutbox) error {
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return client.updateReadReceipt(update)
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})
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dispatcher.OnReadHistoryInbox(func(ctx context.Context, e tg.Entities, update *tg.UpdateReadHistoryInbox) error {
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return client.onOwnReadReceipt(ids.MakePortalKey(update.Peer, login.ID), update.MaxID)
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})
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dispatcher.OnReadChannelInbox(func(ctx context.Context, e tg.Entities, update *tg.UpdateReadChannelInbox) error {
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return client.onOwnReadReceipt(ids.PeerTypeChannel.AsPortalKey(update.ChannelID, ""), update.MaxID)
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})
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client.ScopedStore = tc.Store.GetScopedStore(telegramUserID)
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client.updatesManager = updates.New(updates.Config{
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OnChannelTooLong: func(channelID int64) {
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tc.Bridge.QueueRemoteEvent(login, &simplevent.ChatResync{
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EventMeta: simplevent.EventMeta{
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Type: bridgev2.RemoteEventChatResync,
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LogContext: func(c zerolog.Context) zerolog.Context {
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return c.Str("update", "channel_too_long").Int64("channel_id", channelID)
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},
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PortalKey: ids.PeerTypeChannel.AsPortalKey(channelID, login.ID),
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},
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CheckNeedsBackfillFunc: func(ctx context.Context, latestMessage *database.Message) (bool, error) { return true, nil },
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})
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},
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Handler: dispatcher,
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Logger: zaplog.Named("gaps"),
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Storage: client.ScopedStore,
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AccessHasher: client.ScopedStore,
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})
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client.client = telegram.NewClient(tc.Config.APIID, tc.Config.APIHash, telegram.Options{
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CustomSessionStorage: &login.Metadata.(*UserLoginMetadata).Session,
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Logger: zaplog,
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UpdateHandler: client.updatesManager,
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OnDead: client.onDead,
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OnSession: client.onConnectionStateChange,
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OnConnected: client.onConnectionStateChange,
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OnAuthError: client.onAuthError,
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PingTimeout: time.Duration(tc.Config.Ping.TimeoutSeconds) * time.Second,
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PingInterval: time.Duration(tc.Config.Ping.IntervalSeconds) * time.Second,
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Device: telegram.DeviceConfig{
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DeviceModel: tc.Config.DeviceInfo.DeviceModel,
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SystemVersion: tc.Config.DeviceInfo.SystemVersion,
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AppVersion: tc.Config.DeviceInfo.AppVersion,
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SystemLangCode: tc.Config.DeviceInfo.SystemLangCode,
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LangCode: tc.Config.DeviceInfo.LangCode,
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},
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})
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client.telegramFmtParams = &telegramfmt.FormatParams{
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GetUserInfoByID: func(ctx context.Context, id int64) (telegramfmt.UserInfo, error) {
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ghost, err := tc.Bridge.GetGhostByID(ctx, ids.MakeUserID(id))
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if err != nil {
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return telegramfmt.UserInfo{}, err
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}
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userInfo := telegramfmt.UserInfo{MXID: ghost.Intent.GetMXID(), Name: ghost.Name}
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// FIXME this should look for user logins by ID, not hardcode the current user
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if id == client.telegramUserID {
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userInfo.MXID = client.userLogin.UserMXID
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}
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return userInfo, nil
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},
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GetUserInfoByUsername: func(ctx context.Context, username string) (telegramfmt.UserInfo, error) {
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if userID, err := client.ScopedStore.GetUserIDByUsername(ctx, username); err != nil {
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return telegramfmt.UserInfo{}, err
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} else if ghost, err := tc.Bridge.GetGhostByID(ctx, ids.MakeUserID(userID)); err != nil {
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return telegramfmt.UserInfo{}, err
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} else {
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userInfo := telegramfmt.UserInfo{MXID: ghost.Intent.GetMXID(), Name: ghost.Name}
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if ghost.ID == client.userID {
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userInfo.MXID = client.userLogin.UserMXID
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}
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return userInfo, nil
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}
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},
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NormalizeURL: func(ctx context.Context, url string) string {
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log := zerolog.Ctx(ctx).With().
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Str("conversion_direction", "to_matrix").
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Str("entity_type", "url").
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Logger()
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if !strings.HasPrefix(url, "https://") && !strings.HasPrefix(url, "http://") && !strings.HasPrefix(url, "ftp://") && !strings.HasPrefix(url, "magnet://") {
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url = "http://" + url
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}
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submatches := messageLinkRegex.FindStringSubmatch(url)
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if len(submatches) == 0 {
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return url
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}
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group := submatches[1]
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msgID, err := strconv.Atoi(submatches[2])
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if err != nil {
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log.Err(err).Msg("error parsing message ID")
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return url
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}
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var portalKey networkid.PortalKey
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if strings.HasPrefix(group, "C/") || strings.HasPrefix(group, "c/") {
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chatID, err := strconv.ParseInt(submatches[1][2:], 10, 64)
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if err != nil {
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log.Err(err).Msg("error parsing channel ID")
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return url
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}
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portalKey = ids.PeerTypeChannel.AsPortalKey(chatID, "")
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} else {
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userID, err := strconv.ParseInt(submatches[1], 10, 64)
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if err != nil {
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log.Err(err).Msg("error parsing user ID")
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return url
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}
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portalKey = ids.PeerTypeUser.AsPortalKey(userID, login.ID)
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}
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portal, err := tc.Bridge.DB.Portal.GetByKey(ctx, portalKey)
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if err != nil {
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log.Err(err).Msg("error getting portal")
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return url
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} else if portal == nil {
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log.Warn().Msg("portal not found")
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return url
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}
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message, err := tc.Bridge.DB.Message.GetFirstPartByID(ctx, client.loginID, ids.MakeMessageID(portalKey, msgID))
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if err != nil {
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log.Err(err).Msg("error getting message")
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return url
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}
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return portal.MXID.EventURI(message.MXID, tc.Bridge.Matrix.ServerName()).MatrixToURL()
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},
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}
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client.matrixParser = &matrixfmt.HTMLParser{
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GetGhostDetails: func(ctx context.Context, ui id.UserID) (networkid.UserID, string, int64, bool) {
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if userID, ok := tc.Bridge.Matrix.ParseGhostMXID(ui); !ok {
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return "", "", 0, false
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} else if telegramUserID, err := ids.ParseUserID(userID); err != nil {
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return "", "", 0, false
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} else if accessHash, err := client.ScopedStore.GetAccessHash(ctx, telegramUserID); err != nil || accessHash == 0 {
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return "", "", 0, false
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} else if username, err := client.ScopedStore.GetUsername(ctx, telegramUserID); err != nil {
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return "", "", 0, false
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} else {
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return userID, username, accessHash, true
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}
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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.Context, 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 nil, func() {}, ctx.Err()
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case err := <-errC: // startup timeout
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cancel()
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return nil, func() {}, err
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case <-initDone: // init done
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}
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return ctx, cancel, nil
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}
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func (t *TelegramClient) onDead() {
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t.userLogin.BridgeState.Send(status.BridgeState{
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StateEvent: status.StateTransientDisconnect,
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Message: "Telegram client disconnected",
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})
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}
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func (t *TelegramClient) onConnectionStateChange() {
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authStatus, err := t.client.Auth().Status(context.Background())
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if err != nil {
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t.userLogin.BridgeState.Send(status.BridgeState{
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StateEvent: status.StateUnknownError,
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Error: "tg-not-authenticated",
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Message: err.Error(),
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})
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} else if authStatus.Authorized {
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t.userLogin.BridgeState.Send(status.BridgeState{StateEvent: status.StateConnected})
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} else {
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t.userLogin.BridgeState.Send(status.BridgeState{
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StateEvent: status.StateBadCredentials,
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Error: "tg-no-auth",
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Message: "You're not logged in",
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})
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}
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}
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func (t *TelegramClient) onAuthError(err error) {
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t.userLogin.BridgeState.Send(status.BridgeState{
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StateEvent: status.StateBadCredentials,
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Error: "tg-no-auth",
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Message: err.Error(),
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})
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}
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func (t *TelegramClient) Connect(ctx context.Context) (err error) {
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ctx, t.clientCancel, err = connectTelegramClient(ctx, t.client)
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if err != nil {
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return err
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}
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go func() {
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err = t.updatesManager.Run(ctx, t.client.API(), t.telegramUserID, updates.AuthOptions{})
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if err != nil {
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zerolog.Ctx(ctx).Err(err).Msg("failed to run updates manager")
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t.clientCancel()
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}
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}()
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// Update the logged-in user's ghost info (this also updates the user
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// login's remote name and profile).
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if me, err := t.client.Self(ctx); err != nil {
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return fmt.Errorf("failed to get self: %w", err)
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} else if _, err := t.updateGhost(ctx, t.telegramUserID, me); err != nil {
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return fmt.Errorf("failed to update ghost: %w", err)
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}
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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) getInputUser(ctx context.Context, id int64) (*tg.InputUser, error) {
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accessHash, err := t.ScopedStore.GetAccessHash(ctx, id)
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if err != nil {
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return nil, fmt.Errorf("failed to get access hash for user %d: %w", id, err)
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}
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return &tg.InputUser{UserID: id, AccessHash: accessHash}, nil
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}
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func (t *TelegramClient) getSingleUser(ctx context.Context, id int64) (tg.UserClass, error) {
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if inputUser, err := t.getInputUser(ctx, id); err != nil {
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return nil, err
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} else if users, err := t.client.API().UsersGetUsers(ctx, []tg.InputUserClass{inputUser}); err != nil {
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return nil, err
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} else if len(users) == 0 {
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// TODO does this mean the user is deleted? Need to handle this a bit better
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return nil, fmt.Errorf("failed to get user info for user %d", id)
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} else {
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return users[0], nil
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}
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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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if user, err := t.getSingleUser(ctx, id); err != nil {
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return nil, fmt.Errorf("failed to get user %d: %w", id, err)
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} else if user.TypeID() != tg.UserTypeID {
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return nil, err
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} else {
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return t.updateGhost(ctx, id, user.(*tg.User))
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}
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}
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func (t *TelegramClient) getUserInfoFromTelegramUser(ctx context.Context, u tg.UserClass) (*bridgev2.UserInfo, error) {
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user, ok := u.(*tg.User)
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if !ok {
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return nil, fmt.Errorf("user is %T not *tg.User", user)
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}
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var identifiers []string
|
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if err := t.ScopedStore.SetAccessHash(ctx, user.ID, user.AccessHash); err != nil {
|
|
return nil, err
|
|
}
|
|
if !user.Min {
|
|
if err := t.ScopedStore.SetUsername(ctx, user.ID, user.Username); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if user.Username != "" {
|
|
identifiers = append(identifiers, fmt.Sprintf("telegram:%s", user.Username))
|
|
}
|
|
for _, username := range user.Usernames {
|
|
identifiers = append(identifiers, fmt.Sprintf("telegram:%s", username.Username))
|
|
}
|
|
if phone, ok := user.GetPhone(); ok {
|
|
normalized := strings.TrimPrefix(phone, "+")
|
|
identifiers = append(identifiers, fmt.Sprintf("tel:+%s", normalized))
|
|
if err := t.ScopedStore.SetPhoneNumber(ctx, user.ID, normalized); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
}
|
|
slices.Sort(identifiers)
|
|
identifiers = slices.Compact(identifiers)
|
|
|
|
var avatar *bridgev2.Avatar
|
|
if p, ok := user.GetPhoto(); ok && p.TypeID() == tg.UserProfilePhotoTypeID {
|
|
photo := p.(*tg.UserProfilePhoto)
|
|
avatar = &bridgev2.Avatar{
|
|
ID: ids.MakeAvatarID(photo.PhotoID),
|
|
Get: func(ctx context.Context) (data []byte, err error) {
|
|
transferer, err := media.NewTransferer(t.client.API()).WithUserPhoto(ctx, t.ScopedStore, user, photo.PhotoID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
data, _, err = transferer.Download(ctx)
|
|
return
|
|
},
|
|
}
|
|
}
|
|
|
|
name := util.FormatFullName(user.FirstName, user.LastName)
|
|
return &bridgev2.UserInfo{
|
|
IsBot: &user.Bot,
|
|
Name: &name,
|
|
Avatar: avatar,
|
|
Identifiers: identifiers,
|
|
ExtraUpdates: func(ctx context.Context, ghost *bridgev2.Ghost) (changed bool) {
|
|
meta := ghost.Metadata.(*GhostMetadata)
|
|
if !user.Min {
|
|
changed = changed || meta.IsPremium != user.Premium || meta.IsBot != user.Bot
|
|
meta.IsPremium = user.Premium
|
|
meta.IsBot = user.Bot
|
|
}
|
|
return changed
|
|
},
|
|
}, nil
|
|
}
|
|
|
|
func (t *TelegramClient) IsLoggedIn() bool {
|
|
_, err := t.client.Self(context.TODO())
|
|
return err == nil
|
|
}
|
|
|
|
func (t *TelegramClient) LogoutRemote(ctx context.Context) {
|
|
_, err := t.client.API().AuthLogOut(ctx)
|
|
if err != nil {
|
|
zerolog.Ctx(ctx).Err(err).Msg("failed to logout on Telegram")
|
|
}
|
|
}
|
|
|
|
func (t *TelegramClient) IsThisUser(ctx context.Context, userID networkid.UserID) bool {
|
|
return userID == networkid.UserID(t.userLogin.ID)
|
|
}
|
|
|
|
func (t *TelegramClient) GetCapabilities(ctx context.Context, portal *bridgev2.Portal) *bridgev2.NetworkRoomCapabilities {
|
|
return &bridgev2.NetworkRoomCapabilities{
|
|
FormattedText: true,
|
|
UserMentions: true,
|
|
RoomMentions: true, // TODO?
|
|
LocationMessages: true,
|
|
Captions: true,
|
|
Threads: false, // TODO
|
|
Replies: true,
|
|
Edits: true,
|
|
Deletes: true,
|
|
ReadReceipts: true,
|
|
Reactions: true,
|
|
}
|
|
}
|
|
|
|
func (t *TelegramClient) mySender() bridgev2.EventSender {
|
|
return bridgev2.EventSender{
|
|
IsFromMe: true,
|
|
SenderLogin: t.loginID,
|
|
Sender: t.userID,
|
|
}
|
|
}
|