package main

import (
	"bufio"
	"log"
	"net"

	"badat.dev/maeqtt/v2/mqtt/packets"
	"badat.dev/maeqtt/v2/mqtt/properties"
	"github.com/gdexlab/go-render/render" // For testing
)

func main() {
	listen_addr := ":1883"
	listener, err := net.Listen("tcp", listen_addr)

	if err != nil {
		log.Fatal(err)
	}

	for {
		conn, err := listener.Accept()
		if err != nil {
			log.Println("Failed accepting connection ", err)
		}
		go handleConnection(conn)
	}
}

func handleConnection(con net.Conn) {
	defer closeConnection(con)

	for {
		reader := bufio.NewReader(con)
		packet, err := packets.ReadPacket(reader)
		if err != nil {
			log.Println("Error reading packet ", err)
			break
		}
		log.Println(render.AsCode(packet))
		clientId := "aa"
		resp := packets.ConnackPacket{
			ResonCode:      packets.ConnectReasonCodeSuccess,
			SessionPresent: false,
			Properties: properties.ConnackPacketProperties{
				AssignedClientIdentifier: properties.AssignedClientIdentifier{Value: &clientId},
			},
		}
		err = resp.Write(con)
		log.Println("Wrote response")
		if err != nil {
			log.Println("Error writing response ", err)
			break
		}
	}

}

func closeConnection(con net.Conn) {
	err := con.Close()
	if err != nil {
		log.Println("Failed to close connection", err)
	}
}