package ethpipe

import (
	"github.com/ethereum/eth-go/ethstate"
	"github.com/ethereum/eth-go/ethutil"
)

var cnfCtr = ethutil.Hex2Bytes("661005d2720d855f1d9976f88bb10c1a3398c77f")

type object struct {
	*ethstate.StateObject
}

func (self object) StorageString(str string) *ethutil.Value {
	if ethutil.IsHex(str) {
		return self.Storage(ethutil.Hex2Bytes(str[2:]))
	} else {
		return self.Storage(ethutil.RightPadBytes([]byte(str), 32))
	}
}

func (self object) Storage(addr []byte) *ethutil.Value {
	return self.StateObject.GetStorage(ethutil.BigD(addr))
}

type config struct {
	pipe *Pipe
}

func (self *config) Get(name string) object {
	configCtrl := self.pipe.World().safeGet(cnfCtr)
	var addr []byte

	switch name {
	case "NameReg":
		addr = []byte{0}
	default:
		addr = ethutil.RightPadBytes([]byte(name), 32)
	}

	objectAddr := configCtrl.GetStorage(ethutil.BigD(addr))
	return object{self.pipe.World().safeGet(objectAddr.Bytes())}
}

func (self *config) Exist() bool {
	return self.pipe.World().Get(cnfCtr) != nil
}