// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.

package identifier

import (
	"net/url"
	"errors"
	"strings"
)


var (
	ErrInvalidURI error = errors.New("Invalid URI")
)

type ID string

func (i *ID) SetURL(u *url.URL) {
	*i = ID(u.String())
}

func (i ID) Parse() *url.URL {
	url, e := url.Parse(string(i))
	if e == nil {
		return url
	}
	return nil
}

func (i ID) Extension() (exttype string, fileext string) {
	elements := strings.Split(string(i), ".")
	numberOfElements := len(elements)
	if numberOfElements > 1 {
		if numberOfElements > 2 {
			exttype = elements[numberOfElements - 2]
			fileext = elements[numberOfElements - 1]
		} else {
			exttype = elements[numberOfElements - 1]
		}
	}
	return exttype, fileext
}

func (i ID) IsEmpty() bool {
	return i == ""
}