package ipp

import (
	"bytes"
	"encoding/binary"
	"fmt"
	"io"

	log "github.com/sirupsen/logrus"
)

type boolean struct {
	name  string
	value bool
}

func NewBoolean(name string, value bool) *boolean {
	b := new(boolean)
	b.name = name
	b.value = value
	return b
}

func (b boolean) Name() string {
	return b.name
}

func (b boolean) String() string {
	return b.name + ":" + fmt.Sprint(b.value)
}

func (b *boolean) valueTag() tag {
	return booleanValueTag
}

func (b *boolean) unmarshal(byteStream io.Reader) {
	log.Warn("Unmarshal of boolean is not implemented yet")
}

func (e *boolean) marshal() []byte {
	l := 5 + len(e.name)
	b := make([]byte, 0, l)
	buf := bytes.NewBuffer(b)
	buf.WriteByte(byte(booleanValueTag))
	binary.Write(buf, binary.BigEndian, uint16(len(e.name)))
	buf.WriteString(e.name)
	binary.Write(buf, binary.BigEndian, uint16(1))
	if e.value {
		buf.WriteByte(byte(1))
	} else {
		buf.WriteByte(byte(0))
	}
	return buf.Bytes()
}

func (e *boolean) size() int {
	l := 5 + len(e.name)
	return l
}