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/**
* SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
import type { ShareAttribute } from '../../../files_sharing/src/sharing'
import { FileAction, Permission, Node, FileType, View, DefaultType } from '@nextcloud/files'
import { t } from '@nextcloud/l10n'
import { generateUrl } from '@nextcloud/router'
import { getSharingToken, isPublicShare } from '@nextcloud/sharing/public'
import { basename } from 'path'
import ArrowDownSvg from '@mdi/svg/svg/arrow-down.svg?raw'
const triggerDownload = function(url: string) {
const hiddenElement = document.createElement('a')
hiddenElement.download = ''
hiddenElement.href = url
hiddenElement.click()
}
const downloadNodes = function(dir: string, nodes: Node[]) {
const secret = Math.random().toString(36).substring(2)
let url: string
if (isPublicShare()) {
url = generateUrl('/s/{token}/download/{filename}?path={dir}&files={files}&downloadStartSecret={secret}', {
dir,
secret,
files: JSON.stringify(nodes.map(node => node.basename)),
token: getSharingToken(),
filename: `${basename(dir)}.zip}`,
})
} else {
url = generateUrl('/apps/files/ajax/download.php?dir={dir}&files={files}&downloadStartSecret={secret}', {
dir,
secret,
files: JSON.stringify(nodes.map(node => node.basename)),
})
}
triggerDownload(url)
}
const isDownloadable = function(node: Node) {
if ((node.permissions & Permission.READ) === 0) {
return false
}
// If the mount type is a share, ensure it got download permissions.
if (node.attributes['share-attributes']) {
const shareAttributes = JSON.parse(node.attributes['share-attributes'] || '[]') as Array<ShareAttribute>
const downloadAttribute = shareAttributes.find(({ scope, key }: ShareAttribute) => scope === 'permissions' && key === 'download')
if (downloadAttribute) {
return downloadAttribute.value === true
}
}
return true
}
export const action = new FileAction({
id: 'download',
default: DefaultType.DEFAULT,
displayName: () => t('files', 'Download'),
iconSvgInline: () => ArrowDownSvg,
enabled(nodes: Node[]) {
if (nodes.length === 0) {
return false
}
// We can download direct dav files. But if we have
// some folders, we need to use the /apps/files/ajax/download.php
// endpoint, which only supports user root folder.
if (nodes.some(node => node.type === FileType.Folder)
&& nodes.some(node => !node.root?.startsWith('/files'))) {
return false
}
return nodes.every(isDownloadable)
},
async exec(node: Node, view: View, dir: string) {
if (node.type === FileType.Folder) {
downloadNodes(dir, [node])
return null
}
triggerDownload(node.encodedSource)
return null
},
async execBatch(nodes: Node[], view: View, dir: string) {
if (nodes.length === 1) {
this.exec(nodes[0], view, dir)
return [null]
}
downloadNodes(dir, nodes)
return new Array(nodes.length).fill(null)
},
order: 30,
})
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