Support pending updates

client/client.go

@@ -9,10 +9,13 @@ import (
 	"time"
 )
 
+var pendingUpdateType []Type
+
 type Client struct {
 	jsonClient      *JsonClient
 	extraGenerator  ExtraGenerator
 	responses       chan *Response
+	pendingResp     chan *Response
 	listenerStore   *listenerStore
 	catchersStore   *sync.Map
 	successMsgStore *sync.Map
@@ -56,10 +59,18 @@ func SetFilePath(path string) {
 	})
 }
 
+// Keep specific update type in memory when listener is not ready.
+func SetPendingUpdateType(update ...Type) {
+	for _, v := range update {
+		pendingUpdateType = append(pendingUpdateType, v)
+	}
+}
+
 func NewClient(authorizationStateHandler AuthorizationStateHandler, options ...Option) (*Client, error) {
 	client := &Client{
 		jsonClient:      NewJsonClient(),
 		responses:       make(chan *Response, 1000),
+		pendingResp:     make(chan *Response, 1000),
 		listenerStore:   newListenerStore(),
 		catchersStore:   &sync.Map{},
 		successMsgStore: &sync.Map{},
@@ -74,6 +85,7 @@ func NewClient(authorizationStateHandler AuthorizationStateHandler, options ...O
 
 	tdlibInstance.addClient(client)
 
+	go client.processPendingResponse()
 	go client.receiver()
 
 	err := Authorize(client, authorizationStateHandler)
@@ -84,8 +96,7 @@ func NewClient(authorizationStateHandler AuthorizationStateHandler, options ...O
 	return client, nil
 }
 
-func (client *Client) receiver() {
-	for response := range client.responses {
+func (client *Client) processResponse(response *Response) {
 	if response.Extra != "" {
 		value, ok := client.catchersStore.Load(response.Extra)
 		if ok {
@@ -95,7 +106,7 @@ func (client *Client) receiver() {
 
 	typ, err := UnmarshalType(response.Data)
 	if err != nil {
-			continue
+		return
 	}
 
 	if typ.GetType() == (&UpdateMessageSendSucceeded{}).GetType() {
@@ -105,6 +116,14 @@ func (client *Client) receiver() {
 		}
 	}
 
+	if len(client.listenerStore.Listeners()) == 0 {
+		for _, p := range pendingUpdateType {
+			if typ.GetType() == p.GetType() {
+				client.pendingResp <- response
+			}
+		}
+	}
+
 	needGc := false
 	for _, listener := range client.listenerStore.Listeners() {
 		if listener.IsActive() && listener.Updates != nil && typ.GetType() == listener.Filter.GetType() { // All updates go to Updates channel if type == filter
@@ -119,6 +138,31 @@ func (client *Client) receiver() {
 		client.listenerStore.gc()
 	}
 }
+
+func (client *Client) receiver() {
+	for response := range client.responses {
+		client.processResponse(response)
+	}
+}
+
+func (client *Client) processPendingResponse() {
+	// No need to process pending response if no pending list.
+	if len(pendingUpdateType) == 0 {
+		return
+	}
+
+	// Wait for listener to be ready.
+	for {
+		if len(client.listenerStore.Listeners()) > 0 {
+			break
+		}
+		time.Sleep(1 * time.Second)
+	}
+
+	// Start processing pending response
+	for response := range client.pendingResp {
+		client.processResponse(response)
+	}
 }
 
 func (client *Client) Send(req Request) (*Response, error) {

example/pending/PendingUpdate.go

@@ -0,0 +1,107 @@
+package main
+
+import (
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	tdlib "github.com/c0re100/gotdlib/client"
+)
+
+func GetTdParameters() *tdlib.TdlibParameters {
+	return &tdlib.TdlibParameters{
+		UseTestDc:              false,
+		DatabaseDirectory:      "./tdlib-db",
+		FilesDirectory:         "./tdlib-files",
+		UseFileDatabase:        true,
+		UseChatInfoDatabase:    true,
+		UseMessageDatabase:     true,
+		UseSecretChats:         false,
+		ApiId:                  132712,
+		ApiHash:                "e82c07ad653399a37baca8d1e498e472",
+		SystemLanguageCode:     "en",
+		DeviceModel:            "HuskyNG",
+		SystemVersion:          "3.0",
+		ApplicationVersion:     "3.0",
+		EnableStorageOptimizer: true,
+		IgnoreFileNames:        false,
+	}
+}
+
+func main() {
+	tdlib.SetLogLevel(0)
+	tdlib.SetFilePath("./errors.txt")
+
+	// Set pending update list
+	tdlib.SetPendingUpdateType(&tdlib.UpdateNewMessage{})
+	// Of coz, you can set more than one type, depending on your needs
+	//tdlib.SetPendingUpdateType(&tdlib.UpdateNewMessage{}, &tdlib.UpdateMessageEdited{}, &tdlib.UpdateDeleteMessages{})
+
+	botToken := "your_bot_token"
+	authorizer := tdlib.BotAuthorizer(botToken)
+
+	authorizer.TdlibParameters <- GetTdParameters()
+
+	client, err := tdlib.NewClient(authorizer)
+	if err != nil {
+		log.Fatalf("NewClient error: %s", err)
+	}
+
+	// Handle SIGINT
+	ch := make(chan os.Signal, 2)
+	signal.Notify(ch, os.Interrupt, syscall.SIGINT)
+	signal.Notify(ch, os.Interrupt, syscall.SIGKILL)
+	signal.Notify(ch, os.Interrupt, syscall.SIGTERM)
+	signal.Notify(ch, os.Interrupt, syscall.SIGQUIT)
+	signal.Notify(ch, os.Interrupt, syscall.SIGSEGV)
+	go func() {
+		<-ch
+		client.Close()
+	}()
+
+	me, err := client.GetMe()
+	if err != nil {
+		log.Fatalf("GetMe error: %s", err)
+	}
+
+	log.Printf("%s connected", me.Username)
+
+	listener := client.AddEventReceiver(&tdlib.UpdateNewMessage{}, 1000)
+
+	defer listener.Close()
+	for update := range listener.Updates {
+		updateMsg := update.(*tdlib.UpdateNewMessage)
+		chatId := updateMsg.Message.ChatId
+		msgId := updateMsg.Message.Id
+
+		var msgText string
+		var msgEnt []*tdlib.TextEntity
+
+		switch updateMsg.Message.Content.MessageContentType() {
+		case "messageText":
+			msgText = updateMsg.Message.Content.(*tdlib.MessageText).Text.Text
+			msgEnt = updateMsg.Message.Content.(*tdlib.MessageText).Text.Entities
+
+			cmd := tdlib.CheckCommand(msgText, msgEnt)
+			switch cmd {
+			case "/ping":
+				text, _ := tdlib.ParseTextEntities(&tdlib.ParseTextEntitiesRequest{
+					Text:      "<b>pong!</b>",
+					ParseMode: &tdlib.TextParseModeHTML{},
+				})
+				m, err := client.SendMessage(&tdlib.SendMessageRequest{
+					ChatId:           chatId,
+					ReplyToMessageId: msgId,
+					InputMessageContent: &tdlib.InputMessageText{
+						Text: text,
+					},
+				})
+				if err != nil {
+					continue
+				}
+				log.Printf("Message sent, ID: %d", m.Id)
+			}
+		}
+	}
+}