package opt

import (
	"strconv"
)

type BoolOption struct {
	name        string
	shortName   string
	description string
	value       bool
}

var _ Option = (*BoolOption)(nil)

func Bool(name, shortName string, defaultValue bool, description string) *BoolOption {
	return &BoolOption{
		name:        name,
		shortName:   shortName,
		description: description,
		value:       defaultValue,
	}
}

// Description implements Option.
func (o *BoolOption) Description() string {
	return o.description
}

// Name implements Option.
func (o *BoolOption) Name() string {
	return o.name
}

// ShortName implements Option.
func (o *BoolOption) ShortName() string {
	return o.shortName

}

// Value implements Option.
func (o *BoolOption) Parse(raw string) error {
	if raw == "" {
		o.value = !o.value
		return nil
	}

	boolVal, err := strconv.ParseBool(raw)
	if err != nil {
		return err
	}

	o.value = boolVal
	return nil
}

// RequiresVal implements Option.
func (*BoolOption) RequiresVal() bool {
	return false
}

func (o *BoolOption) Value() bool {
	return o.value
}