package models

import (
	"errors"
)

type Result int32

const (
	NotTested               Result = 1 // change only with schema change
	Accepted                Result = 2
	WrongAnswer             Result = 3
	PresentationError       Result = 4
	CompilationError        Result = 5
	MemoryLimitExceeded     Result = 6
	TimeLimitExceeded       Result = 7
	RuntimeError            Result = 8
	SystemFailDuringTesting Result = 9
	Testing                 Result = 10
)

var ErrBadResult = errors.New("bad result")

func (result Result) Valid() error {
	switch result {
	case NotTested, Accepted, TimeLimitExceeded, MemoryLimitExceeded, CompilationError, SystemFailDuringTesting:
		return nil
	}
	return ErrBadResult
}