package main

import (
	"encoding/binary"
	"net"
)

/* Login to El */
func sendLogin(c net.Conn, user string, password string) {
	s := user + " " + password
	length := len(s) + 3
	b := make([]byte, length+2)
	b[0] = 140
	b[1] = byte(length % 256)
	b[2] = byte(length / 256)
	copy(b[3:], s)
	b[length+1] = 0
	binary.Write(c, binary.LittleEndian, b)
}

/* Send back to server what we received */
func sendPingReply(c net.Conn, b []byte) {
	ping_reply := make([]byte, 7)
	for i := 0; i < 7; i++ {
		ping_reply[i] = b[i]
	}
	binary.Write(c, binary.LittleEndian, ping_reply)
}

func sendMessage(c net.Conn, user string, mesaj string) {
	s := user + " " + mesaj
	msg := make([]byte, len(s)+3)
	msg[0] = 2
	msg[1] = byte((len(s) + 1) % 256)
	msg[2] = byte((len(s) + 1) / 256)
	copy(msg[3:], s)
	binary.Write(c, binary.LittleEndian, msg)
}

func sendHeartBeat(c net.Conn) {
	hb := make([]byte, 3)
	hb[0] = 14
	hb[1] = 1
	hb[2] = 0
	binary.Write(c, binary.LittleEndian, hb)
}

/* // Not used right now
func sendMeMyActors(c net.Conn) {
	msg := make([]byte, 3)
	msg[0] = 8
	msg[1] = 1
	msg[2] = 0
	binary.Write(c, binary.LittleEndian, msg)
}
*/
func sendTrade(c net.Conn, actor int) {
	msg := make([]byte, 7)
	msg[0] = 32
	msg[1] = 5
	msg[2] = 0
	msg[3] = byte(actor % 256)
	msg[4] = byte(actor / 256)
	msg[5] = 0
	msg[6] = 0
	// @TODO@ - Add proper debug statement
	// fmt.Printf("Send trade hex dump: %s\n", hex.Dump(msg))
	binary.Write(c, binary.LittleEndian, msg)

}

func putItemOnTrade(c net.Conn, quantity int, inv_index int) {

	msg := make([]byte, 9)
	msg[0] = PUT_OBJECT_ON_TRADE
	msg[1] = 7
	msg[2] = 0
	msg[3] = 1
	msg[4] = byte(inventar[inv_index].Pos)
	msg[5] = byte(quantity % 256)
	msg[6] = byte(quantity / 256)
	msg[7] = 0
	msg[8] = 0
	binary.Write(c, binary.LittleEndian, msg)
}

func acceptTrade(c net.Conn) {
	msg := make([]byte, 19)
	msg[0] = ACCEPT_TRADE
	msg[1] = 17
	msg[2] = 0
	for i := 0; i < 16; i++ {
		msg[3+i] = 1
	}
	binary.Write(c, binary.LittleEndian, msg)
}