package main

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

func hello(L *lua.LState) int {
	inputparam :=  L.ToInt(1)
	fmt.Println("func hello get:",inputparam)

	//将返回参数压入栈中
	L.Push(lua.LString("hello"))
	//返回参数为1个
	return 1
}

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

	//读写全局变量
	L.SetGlobal("Age",lua.LNumber(8))
	fmt.Println(L.GetGlobal("Age"))

	//生成一个带名字的table
	var t = L.NewTable()
	t.RawSetString("ID",lua.LNumber(110))
	t.RawSetString("Name",lua.LString("LULU"))
	L.SetGlobal("stu_table",t)


	//生成一个带名字的table2
	if err := L.DoString(`
	person = {
	  name = "Michel",
	  age  = "31", -- weakly input
	  work_place = "San Jose",
	  role = {
		{
		  name = "Administrator"
		},
		{
		  name = "Operator"
		}
	  }
	}
	`); err != nil {
		panic(err)
	}

	//生成一个带名字的table3
	var t3 = L.NewTable()
	L.SetTable(t3,lua.LString("Height"),lua.LNumber(1009))
        L.SetGlobal("late",t3)

	//读取table中的所有数据1
	var r = L.GetGlobal("person")
	fmt.Println(r.Type())

	//读取table中的所有数据2
	fmt.Println(L.GetTable(r,lua.LString("work_place")))
	fmt.Println(L.GetTable(r,lua.LString("name")))

	//读取table中的所有数据3

	fmt.Println(L.GetField(r,"work_place"))
	fmt.Println(L.GetField(r,"name"))
	fmt.Println(L.Register)

	////读取table中的所有数据4
	fmt.Println(L.GetTable(t3,lua.LString("Height")))


	//遍历读取table中的key，value
	//待补充

	//互相调用函数
	//注册go函数
	L.Register("hello",hello)

	// 生成一个lua函数
	err := L.DoString(`
		function info(n)
			ret = hello(n) 
			return ret
			
		end`)
	if err != nil{
		panic(err)
	}

	fn := L.GetGlobal("info")
	if err := L.CallByParam(lua.P{
		Fn: fn,
		NRet: 1,
		Protect: true,
	}, lua.LNumber(10)); err != nil {
		panic(err)
	}

	//这里获取函数返回值
	ret := L.Get(-1)
	fmt.Println(ret)


        //从lua文件中读取lua字符串
        err = L.DoFile("./test.lua")
        if err != nil{
            fmt.Println("err",err.Error())
            panic(err)
	}
	
	fmt.Println(L.GetGlobal("title"))

	title := L.GetGlobal("title")
	fmt.Println(reflect.TypeOf(title))
	fmt.Println(title)

	fmt.Println("Done!")
}