package valid

// Option configures a Validator.
type Option func(*config)

// WithMessageProvider sets a custom MessageProvider.
// Default: DefaultMessages (English).
func WithMessageProvider(mp MessageProvider) Option {
	return func(c *config) {
		c.mp = mp
	}
}

// WithCustomValidator registers a custom validation tag and its function.
// The tag can then be used in struct tags: validate:"mytag" or validate:"mytag=param".
// Panics if registration fails (empty tag or tag that conflicts with a built-in).
func WithCustomValidator(tag string, fn func(FieldLevel) bool) Option {
	return func(c *config) {
		c.customValidators = append(c.customValidators, customValidator{tag: tag, fn: fn})
	}
}

type customValidator struct {
	tag string
	fn  func(FieldLevel) bool
}

type config struct {
	mp               MessageProvider
	customValidators []customValidator
}