package main

import (
	"fmt"

	"github.com/vxcontrol/golua/lua"
)

func test(L *lua.State) int {
	fmt.Println("hello world! from go!")
	return 0
}

func test2(L *lua.State) int {
	arg := L.CheckInteger(-1)
	argfrombottom := L.CheckInteger(1)
	fmt.Print("test2 arg: ")
	fmt.Println(arg)
	fmt.Print("from bottom: ")
	fmt.Println(argfrombottom)
	return 0
}

func main() {
	L := lua.NewState()
	defer L.Close()
	L.OpenLibs()

	L.GetField(lua.LUA_GLOBALSINDEX, "print")
	L.PushString("Hello World!")
	L.Call(1, 0)

	L.PushGoFunction(test)
	L.PushGoFunction(test)
	L.PushGoFunction(test)
	L.PushGoFunction(test)

	L.PushGoFunction(test2)
	L.PushInteger(42)
	L.Call(1, 0)

	L.Call(0, 0)
	L.Call(0, 0)
	L.Call(0, 0)

	// this will fail as we didn't register test2 function
	err := L.DoString("test2(42)")

	fmt.Printf("Ciao %v\n", err)
}