captcha

type Answer string

type BaseCaptcha struct {
	// contains filtered or unexported fields
}

type Captcha interface {
	// Image generates an image of a CAPTCHA according to a passed style
	// and returns a pointer to it.
	Image(style string) *image.Image
	// Answer returns a pregenerated answer.
	Answer() Answer
	// Solve compares a stored answer with a passed one.
	Solve(answer Answer) bool
	// IsSolved returns if a CAPTCHA is solved or not.
	IsSolved() bool
	// Expiry returns a date after what CAPTCHA will expire.
	Expiry() time.Time
}

type DB interface {
	New(data string, captcha Captcha) (Captcha, ID)
	GetExpiry() time.Duration
	SetExpiry(expiry time.Duration)
	Image(id ID, style string) *image.Image
	Solve(id ID, answer Answer) bool
	IsSolved(id ID) bool
	Remove(id ID)
}

type ID string