Add chat send and keepalive

Signed-off-by: Etzelia <etzelia@hotmail.com>

main.go

@@ -1,12 +1,16 @@
 package main
 
 import (
+	"bufio"
 	"flag"
 	"os"
+	"strings"
 
 	"github.com/Tnze/go-mc/bot"
 	"github.com/Tnze/go-mc/bot/basic"
 	"github.com/Tnze/go-mc/chat"
+	"github.com/Tnze/go-mc/data/packetid"
+	"github.com/Tnze/go-mc/net/packet"
 	"github.com/Tnze/go-mc/yggdrasil"
 	"github.com/google/uuid"
 	"github.com/peterbourgon/ff/v3"
@@ -19,6 +23,7 @@ func main() {
 	emailFlag := fs.String("email", "", "Login Email")
 	passwordFlag := fs.String("password", "", "Login Password")
 	ipFlag := fs.String("ip", "", "Server IP")
+	debugFlag := fs.Bool("debug", false, "Debug Logging")
 	if err := ff.Parse(fs, os.Args[1:],
 		ff.WithEnvVarPrefix("AFK"),
 		ff.WithConfigFileFlag("config"),
@@ -28,6 +33,9 @@ func main() {
 		beaver.Fatal(err)
 		return
 	}
+	if *debugFlag {
+		beaver.Console.Level = beaver.DEBUG
+	}
 
 	client := bot.NewClient()
 
@@ -45,17 +53,50 @@ func main() {
 	}
 	beaver.Info("Login success")
 
+	client.Events.AddListener(bot.PacketHandler{Priority: 64, ID: packetid.KeepAliveClientbound, F: keepalive(client)})
 	basic.EventsListener{
 		ChatMsg: onChatMsg,
 	}.Attach(client)
 
+	go onChatSend(client)
+
 	err = client.HandleGame()
 	if err != nil {
 		beaver.Fatal(err)
 	}
 }
 
+func keepalive(c *bot.Client) func(packet.Packet) error {
+	return func(pk packet.Packet) error {
+		beaver.Debug("keepalive")
+		var id packet.Long
+		if err := pk.Scan(&id); err != nil {
+			return err
+		}
+		return c.Conn.WritePacket(packet.Marshal(
+			packetid.KeepAliveServerbound,
+			id,
+		))
+	}
+}
+
 func onChatMsg(c chat.Message, _ byte, _ uuid.UUID) error {
 	beaver.Info(c)
 	return nil
 }
+
+func onChatSend(c *bot.Client) {
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		msg := scanner.Text()
+		if strings.TrimSpace(msg) == "" {
+			continue
+		}
+		if err := c.Conn.WritePacket(packet.Marshal(
+			packetid.ChatServerbound,
+			packet.String(msg),
+		)); err != nil {
+			beaver.Error(err)
+		}
+	}
+}