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/**
* @copyright 2022 Louis Chemineau <mlouis@chmn.me>
*
* @author Louis Chemineau <mlouis@chmn.me>
*
* @license AGPL-3.0-or-later
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import { getCurrentUser } from '@nextcloud/auth'
import client from '../utils/davClient.js'
import davRequest from '../utils/davRequest.js'
import logger from '../utils/logger.js'
import { basename, joinPaths } from '@nextcloud/paths'
import { generateUrl } from '@nextcloud/router'
import { translate } from '@nextcloud/l10n'
import moment from '@nextcloud/moment'
/**
* @typedef {object} Version
* @property {string} title - 'Current version' or ''
* @property {string} fileName - File name relative to the version DAV endpoint
* @property {string} mimeType - Empty for the current version, else the actual mime type of the version
* @property {string} size - Human readable size
* @property {string} type - 'file'
* @property {number} mtime - Version creation date as a timestamp
* @property {string} preview - Preview URL of the version
* @property {string} url - Download URL of the version
* @property {string|null} fileVersion - The version id, null for the current version
* @property {boolean} isCurrent - Whether this is the current version of the file
*/
/**
* @param fileInfo
* @return {Promise<Version[]>}
*/
export async function fetchVersions(fileInfo) {
const path = `/versions/${getCurrentUser()?.uid}/versions/${fileInfo.id}`
try {
/** @type {import('webdav').FileStat[]} */
const response = await client.getDirectoryContents(path, {
data: davRequest,
})
return response.map(version => formatVersion(version, fileInfo))
} catch (exception) {
logger.error('Could not fetch version', { exception })
throw exception
}
}
/**
* Restore the given version
*
* @param {Version} version
* @param {object} fileInfo
*/
export async function restoreVersion(version, fileInfo) {
try {
logger.debug('Restoring version', { url: version.url })
await client.moveFile(
`/versions/${getCurrentUser()?.uid}/versions/${fileInfo.id}/${version.fileVersion}`,
`/versions/${getCurrentUser()?.uid}/restore/target`
)
} catch (exception) {
logger.error('Could not restore version', { exception })
throw exception
}
}
/**
* Format version
*
* @param {object} version - raw version received from the versions DAV endpoint
* @param {object} fileInfo - file properties received from the files DAV endpoint
* @return {Version}
*/
function formatVersion(version, fileInfo) {
const isCurrent = version.mime === ''
const fileVersion = isCurrent ? null : basename(version.filename)
let url = null
let preview = null
if (isCurrent) {
// https://nextcloud_server2.test/remote.php/webdav/welcome.txt?downloadStartSecret=hl5awd7tbzg
url = joinPaths('/remote.php/webdav', fileInfo.path, fileInfo.name)
preview = generateUrl('/core/preview?fileId={fileId}&c={fileEtag}&x=250&y=250&forceIcon=0&a=0', {
fileId: fileInfo.id,
fileEtag: fileInfo.etag,
})
} else {
url = joinPaths('/remote.php/dav', version.filename)
preview = generateUrl('/apps/files_versions/preview?file={file}&version={fileVersion}', {
file: joinPaths(fileInfo.path, fileInfo.name),
fileVersion,
})
}
return {
title: isCurrent ? translate('files_versions', 'Current version') : '',
fileName: version.filename,
mimeType: version.mime,
size: isCurrent ? fileInfo.size : version.size,
type: version.type,
mtime: moment(isCurrent ? fileInfo.mtime : version.lastmod).unix(),
preview,
url,
fileVersion,
isCurrent,
}
}
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