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server.go
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server.go
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package e2e
import (
"context"
"sync"
"golang.org/x/xerrors"
"github.com/gotd/td/telegram/updates"
"github.com/gotd/td/tg"
)
// Server for testing gaps.
type Server struct {
date int
peers *peerDatabase
messages *messageDatabase
mux sync.Mutex
}
// NewServer creates new test server.
func NewServer() *Server {
return &Server{
date: 1,
peers: &peerDatabase{
users: make(map[int]*tg.User),
chats: make(map[int]*tg.Chat),
channels: make(map[int]*tg.Channel),
},
messages: &messageDatabase{
channels: make(map[int][]tg.MessageClass),
},
}
}
// UpdatesGetState returns current remote state.
func (s *Server) UpdatesGetState(ctx context.Context) (*tg.UpdatesState, error) {
s.mux.Lock()
defer s.mux.Unlock()
return &tg.UpdatesState{
Pts: len(s.messages.common),
Qts: len(s.messages.secret),
Date: s.date,
Seq: 0,
}, nil
}
// UpdatesGetDifference returns difference between local and remote states.
func (s *Server) UpdatesGetDifference(ctx context.Context, request *tg.UpdatesGetDifferenceRequest) (tg.UpdatesDifferenceClass, error) {
s.mux.Lock()
defer s.mux.Unlock()
ents := updates.NewEntities()
var common []tg.MessageClass
for i := request.Pts + 1; i <= len(s.messages.common); i++ {
common = append(common, s.messages.common[i-1])
s.fillMessageEnts(s.messages.common[i-1], ents)
}
var secret []tg.EncryptedMessageClass
for i := request.Qts + 1; i <= len(s.messages.secret); i++ {
secret = append(secret, s.messages.secret[i-1])
}
var others []tg.UpdateClass
for _, msgs := range s.messages.channels {
for i, msg := range msgs {
if msg.(*tg.Message).Date > request.Date {
others = append(others, &tg.UpdateNewChannelMessage{
Message: msg,
Pts: i + 1,
PtsCount: 1,
})
s.fillMessageEnts(msg, ents)
}
}
}
if len(common) == 0 && len(secret) == 0 && len(others) == 0 {
return &tg.UpdatesDifferenceEmpty{
Date: s.date,
Seq: 0,
}, nil
}
return &tg.UpdatesDifference{
NewMessages: common,
NewEncryptedMessages: secret,
OtherUpdates: others,
Users: ents.AsUsers(),
Chats: ents.AsChats(),
State: tg.UpdatesState{
Pts: len(s.messages.common),
Qts: len(s.messages.secret),
Date: s.date,
Seq: 0,
},
}, nil
}
// UpdatesGetChannelDifference returns difference between local and remote channel states.
func (s *Server) UpdatesGetChannelDifference(
ctx context.Context, request *tg.UpdatesGetChannelDifferenceRequest,
) (tg.UpdatesChannelDifferenceClass, error) {
s.mux.Lock()
defer s.mux.Unlock()
channel, ok := request.Channel.(*tg.InputChannel)
if !ok {
return nil, xerrors.Errorf("bad InputChannelClass type: %T", request.Channel)
}
if peer, ok := s.peers.channels[channel.ChannelID]; true {
if !ok {
return nil, xerrors.Errorf("channel not found")
}
if peer.AccessHash != channel.AccessHash {
return nil, xerrors.Errorf("invalid access hash")
}
}
var (
channelMsgs = s.messages.channels[channel.ChannelID]
ents = updates.NewEntities()
prepared []tg.MessageClass
)
for i := request.Pts + 1; i <= len(channelMsgs); i++ {
prepared = append(prepared, channelMsgs[i-1])
s.fillMessageEnts(channelMsgs[i-1], ents)
}
if len(prepared) == 0 {
return &tg.UpdatesChannelDifferenceEmpty{
Pts: len(channelMsgs),
Final: true,
}, nil
}
return &tg.UpdatesChannelDifference{
NewMessages: prepared,
Users: ents.AsUsers(),
Chats: ents.AsChats(),
Pts: len(channelMsgs),
Final: true,
}, nil
}
func (s *Server) fillMessageEnts(msg tg.MessageClass, ents *updates.Entities) {
switch peer := msg.(*tg.Message).PeerID.(type) {
case *tg.PeerUser:
user, ok := s.peers.users[peer.UserID]
if !ok {
panic("bad user")
}
ents.Users[user.ID] = user
case *tg.PeerChat:
chat, ok := s.peers.chats[peer.ChatID]
if !ok {
panic("bad chat")
}
ents.Chats[chat.ID] = chat
case *tg.PeerChannel:
channel, ok := s.peers.channels[peer.ChannelID]
if !ok {
panic("bad channel")
}
ents.Channels[channel.ID] = channel
default:
panic("unexpected peer type")
}
peerUser, ok := msg.(*tg.Message).FromID.(*tg.PeerUser)
if !ok {
panic("bad fromID")
}
user, ok := s.peers.users[peerUser.UserID]
if !ok {
panic("bad user")
}
ents.Users[user.ID] = user
}