package plugin

import lua "github.com/yuin/gopher-lua"

func luaValueToGo(lv lua.LValue) interface{} {
	switch v := lv.(type) {
	case lua.LString:
		return string(v)
	case lua.LNumber:
		return float64(v)
	case lua.LBool:
		return bool(v)
	case *lua.LTable:
		if v.MaxN() > 0 {
			arr := make([]interface{}, 0, v.MaxN())
			v.ForEach(func(_, val lua.LValue) {
				arr = append(arr, luaValueToGo(val))
			})
			return arr
		}
		m := make(map[string]interface{})
		v.ForEach(func(key, val lua.LValue) {
			m[key.String()] = luaValueToGo(val)
		})
		return m
	default:
		return nil
	}
}

func goValueToLua(L *lua.LState, val interface{}) lua.LValue {
	switch v := val.(type) {
	case string:
		return lua.LString(v)
	case float64:
		return lua.LNumber(v)
	case int:
		return lua.LNumber(v)
	case int64:
		return lua.LNumber(v)
	case bool:
		return lua.LBool(v)
	case nil:
		return lua.LNil
	case []interface{}:
		tbl := L.NewTable()
		for i, item := range v {
			tbl.RawSetInt(i+1, goValueToLua(L, item))
		}
		return tbl
	case map[string]interface{}:
		tbl := L.NewTable()
		for k, item := range v {
			tbl.RawSetString(k, goValueToLua(L, item))
		}
		return tbl
	default:
		return lua.LNil
	}
}