package main

import (
    "github.com/yuin/gopher-lua"
	"fmt"
)

func Double(L *lua.LState) int {
	lv := L.ToInt(1)             /* get argument */
	L.Push(lua.LNumber(lv * 2)) /* push result */
	

	L.G.Global.ForEach(func(key, value lua.LValue) {
		switch k := key.(type) {	
			case lua.LString:
				fmt.Println("In GO:", k.String(), value.String())
			default:
				fmt.Println("other type")
	}})
	
	return 1                     /* number of results */
}

func Commit(L *lua.LState) int{
	fmt.Println("commit!")
	return 0
}
	
func main() {
	L := lua.NewState()
	defer L.Close()
	
	/*
	prm := `
				t = {10, 20, 30}
				for _,element in pairs(t) do
					print(element)
				end
		`
	*/
	
	L.SetGlobal("MX_APP", lua.LString("hello world"))
	L.SetGlobal("double", L.NewFunction(Double))
	L.SetGlobal("commit", L.NewFunction(Commit))
	prm := `
				--keyspace = aaa
				--class = xxx
				--queue = grok:MX_APP, MX_APP1, MX_APP2
				--match = MX_WINDOWS

				_app = MX_APP

				t = {10, 20, 30}
				for _,element in pairs(t) do
					print(element)
				end
				
				print(_app)
				
				mybiz = function(name)
					return "hello" .. name
				end
				
				_business = mybiz(MX_APP)
				
				print(_business)
				
				for n,v in pairs(_G) do
					print("G:",n,type(v))
				end
				
				print("GO Func :",double(55))
				
				commit()
				return 200
		`	
	
	if err := L.DoString(prm); err != nil {
		panic(err)
	}
	
	ret := L.Get(-1) // returned top value
	L.Pop(1)
	
	fmt.Print("RTN from lua : " ,ret)
	
	//for n,v := range L.GetGlobal("double")
}