/*
meta4a -- Metalink 4.0 creator
Copyright (C) 2021-2023 Sergey Matveev <stargrave@stargrave.org>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 3 of the License.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

// Metalink 4.0 utilities
package meta4ra

import (
	"encoding/xml"
	"time"
)

const (
	Generator       = "meta4ra/0.2.0"
	GPGSigMediaType = "application/pgp-signature"
	HashSHA256      = "sha-256"
	HashSHA512      = "sha-512"
	HashStreebog256 = "streebog-256"
	HashStreebog512 = "streebog-512"
)

type Metalink struct {
	XMLName   xml.Name  `xml:"urn:ietf:params:xml:ns:metalink metalink"`
	Files     []File    `xml:"file"`
	Generator string    `xml:"generator,,omitempty"`
	Published time.Time `xml:"published,,omitempty"`
}

type File struct {
	XMLName     xml.Name   `xml:"file"`
	Name        string     `xml:"name,attr"`
	Description string     `xml:"description,,omitempty"`
	Hashes      []Hash     `xml:"hash,,omitempty"`
	MetaURLs    []MetaURL  `xml:"metaurl,,omitempty"`
	Signature   *Signature `xml:"signature"`
	Size        uint64     `xml:"size,,omitempty"`
	URLs        []URL      `xml:"url,,omitempty"`
}

type URL struct {
	XMLName xml.Name `xml:"url"`
	URL     string   `xml:",chardata"`
}

type Signature struct {
	XMLName   xml.Name `xml:"signature"`
	MediaType string   `xml:"mediatype,attr"`
	Signature string   `xml:",cdata"`
}

type Hash struct {
	XMLName xml.Name `xml:"hash"`
	Type    string   `xml:"type,attr"`
	Hash    string   `xml:",chardata"`
}

type MetaURL struct {
	XMLName   xml.Name `xml:"metaurl"`
	MediaType string   `xml:"mediatype,attr"`
	URL       string   `xml:",chardata"`
}