Fixed issues with Update filtering.

src/behx/bot.go

@@ -43,10 +43,11 @@ func (bot *Bot) Run() error {
 	
 	chans := make(map[SessionId] chan *Update)
 	for u := range updates {
+		var sid SessionId
 		if u.Message != nil {	
 			// Create new session if the one does not exist
 			// for this user.
-			sid := SessionId(u.Message.Chat.ID)
+			sid = SessionId(u.Message.Chat.ID)
 			if _, ok := bot.sessions[sid] ; !ok {
 				bot.sessions.Add(sid)
 			} 
@@ -71,8 +72,11 @@ func (bot *Bot) Run() error {
 					continue
 				}
 			}
-			
-			chn := chans[sid]
+		} else if u.CallbackQuery != nil {
+			sid = SessionId(u.CallbackQuery.Message.Chat.ID)
+		}
+		chn, ok := chans[sid]
+		if ok {
 			chn <- &u
 		}
 	}

src/behx/context.go

@@ -1,5 +1,10 @@
 package behx
 
+import (
+	apix "github.com/go-telegram-bot-api/telegram-bot-api/v5"
+	"fmt"
+)
+
 // The type represents way to interact with user in
 // handling functions. Is provided to Act() function always.
 type Context struct {
@@ -13,12 +18,12 @@ func (ctx *Context) handleUpdateChan(updates chan *Update) {
 	session := ctx.Session
 	bot.Start.Act(ctx)
 	for u := range updates {
-		if u.Message != nil {
 		screen := bot.Screens[session.CurrentScreenId]
 		
 		kbd := bot.Keyboards[screen.KeyboardId]
 		btns := kbd.buttonMap()
 		
+		if u.Message != nil {
 			text := u.Message.Text
 			btn, ok := btns[text]
 			

src/cmd/test/main.go

@@ -29,9 +29,7 @@ var secondKbd = behx.NewKeyboard(
 	behx.NewButtonRow(
 		behx.NewButton(
 			"❤",
-			behx.NewCustomAction(func(c *behx.Context){
-				log.Println("pressed the button!")
-			}),
+			behx.NewScreenChange("start"),
 		),
 	),
 )