package gbxremote

import (
	"encoding/binary"
	"log"
	"net"
	"strconv"

	"git.fanyx.xyz/fanyx/goufy/pkg/config"
)

type GbxClient struct {
	conn      net.Conn
	reqHandle int
}

func (client *GbxClient) Connect(c config.AppConfig) {
	// create connection string from config
	gbxConnString := c.Trackmania.Host + ":" + strconv.FormatInt(int64(c.Trackmania.Port), 10)

	var err error
	//initiate GbxClient
	client.conn, err = net.Dial("tcp", gbxConnString)
	if err != nil {
		log.Fatal(err)
	}
	defer client.conn.Close()

	// handshake
	buf := make([]byte, 4)
	_, err = client.conn.Read(buf)
	if err != nil {
		log.Fatal(err)
	}
	// read handshake length
	len := binary.LittleEndian.Uint32(buf)
	// break handshake if length over 64
	if len > 64 {
		log.Fatal("Handshake is not GBXRemote")
	}
	// otherwise continue to read protocol string
	buf = make([]byte, len)
	_, err = client.conn.Read(buf)

	p := string(buf[:])
	if p != "GBXRemote 2" {
		log.Fatal("Protocol not GBXRemote 2")
	}

	log.Println("Connection established!")
	log.Println("Host:", c.Trackmania.Host, "- Port:", c.Trackmania.Port)
}