package types

import (
	"fmt"
)

// CONTRACT: a zero Result is OK.
type Result struct {
	Code CodeType
	Data []byte
	Log  string // Can be non-deterministic
}

func NewResult(code CodeType, data []byte, log string) Result {
	return Result{
		Code: code,
		Data: data,
		Log:  log,
	}
}

func (res Result) IsOK() bool {
	return res.Code == CodeType_OK
}

func (res Result) IsErr() bool {
	return res.Code != CodeType_OK
}

func (res Result) Error() string {
	return fmt.Sprintf("TMSP code:%v, data:%X, log:%v", res.Code, res.Data, res.Log)
}

func (res Result) PrependLog(log string) Result {
	return Result{
		Code: res.Code,
		Data: res.Data,
		Log:  log + ";" + res.Log,
	}
}

func (res Result) AppendLog(log string) Result {
	return Result{
		Code: res.Code,
		Data: res.Data,
		Log:  res.Log + ";" + log,
	}
}

func (res Result) SetLog(log string) Result {
	return Result{
		Code: res.Code,
		Data: res.Data,
		Log:  log,
	}
}

func (res Result) SetData(data []byte) Result {
	return Result{
		Code: res.Code,
		Data: data,
		Log:  res.Log,
	}
}

//----------------------------------------

// NOTE: if data == nil and log == "", same as zero Result.
func NewResultOK(data []byte, log string) Result {
	return Result{
		Code: CodeType_OK,
		Data: data,
		Log:  log,
	}
}

func NewError(code CodeType, log string) Result {
	return Result{
		Code: code,
		Log:  log,
	}
}