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/**
* @copyright Copyright (c) 2024 John Molakvoæ <skjnldsv@protonmail.com>
*
* @author John Molakvoæ <skjnldsv@protonmail.com>
*
* @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 type { FileStat, ResponseDataDetailed } from 'webdav'
import { emit } from '@nextcloud/event-bus'
import { Folder, Node, davGetClient, davGetDefaultPropfind, davResultToNode } from '@nextcloud/files'
import { openConflictPicker } from '@nextcloud/upload'
import { showError, showInfo } from '@nextcloud/dialogs'
import { translate as t } from '@nextcloud/l10n'
import logger from '../logger.js'
/**
* This represents a Directory in the file tree
* We extend the File class to better handling uploading
* and stay as close as possible as the Filesystem API.
* This also allow us to hijack the size or lastModified
* properties to compute them dynamically.
*/
export class Directory extends File {
/* eslint-disable no-use-before-define */
_contents: (Directory|File)[]
constructor(name, contents: (Directory|File)[] = []) {
super([], name, { type: 'httpd/unix-directory' })
this._contents = contents
}
set contents(contents: (Directory|File)[]) {
this._contents = contents
}
get contents(): (Directory|File)[] {
return this._contents
}
get size() {
return this._computeDirectorySize(this)
}
get lastModified() {
if (this._contents.length === 0) {
return Date.now()
}
return this._computeDirectoryMtime(this)
}
/**
* Get the last modification time of a file tree
* This is not perfect, but will get us a pretty good approximation
* @param directory the directory to traverse
*/
_computeDirectoryMtime(directory: Directory): number {
return directory.contents.reduce((acc, file) => {
return file.lastModified > acc
// If the file is a directory, the lastModified will
// also return the results of its _computeDirectoryMtime method
// Fancy recursion, huh?
? file.lastModified
: acc
}, 0)
}
/**
* Get the size of a file tree
* @param directory the directory to traverse
*/
_computeDirectorySize(directory: Directory): number {
return directory.contents.reduce((acc: number, entry: Directory|File) => {
// If the file is a directory, the size will
// also return the results of its _computeDirectorySize method
// Fancy recursion, huh?
return acc + entry.size
}, 0)
}
}
export type RootDirectory = Directory & {
name: 'root'
}
/**
* Traverse a file tree using the Filesystem API
* @param entry the entry to traverse
*/
export const traverseTree = async (entry: FileSystemEntry): Promise<Directory|File> => {
// Handle file
if (entry.isFile) {
return new Promise<File>((resolve, reject) => {
(entry as FileSystemFileEntry).file(resolve, reject)
})
}
// Handle directory
logger.debug('Handling recursive file tree', { entry: entry.name })
const directory = entry as FileSystemDirectoryEntry
const entries = await readDirectory(directory)
const contents = (await Promise.all(entries.map(traverseTree))).flat()
return new Directory(directory.name, contents)
}
/**
* Read a directory using Filesystem API
* @param directory the directory to read
*/
const readDirectory = (directory: FileSystemDirectoryEntry): Promise<FileSystemEntry[]> => {
const dirReader = directory.createReader()
return new Promise<FileSystemEntry[]>((resolve, reject) => {
const entries = [] as FileSystemEntry[]
const getEntries = () => {
dirReader.readEntries((results) => {
if (results.length) {
entries.push(...results)
getEntries()
} else {
resolve(entries)
}
}, (error) => {
reject(error)
})
}
getEntries()
})
}
export const createDirectoryIfNotExists = async (absolutePath: string) => {
const davClient = davGetClient()
const dirExists = await davClient.exists(absolutePath)
if (!dirExists) {
logger.debug('Directory does not exist, creating it', { absolutePath })
await davClient.createDirectory(absolutePath, { recursive: true })
const stat = await davClient.stat(absolutePath, { details: true, data: davGetDefaultPropfind() }) as ResponseDataDetailed<FileStat>
emit('files:node:created', davResultToNode(stat.data))
}
}
export const resolveConflict = async <T extends ((Directory|File)|Node)>(files: Array<T>, destination: Folder, contents: Node[]): Promise<T[]> => {
try {
// List all conflicting files
const conflicts = files.filter((file: File|Node) => {
return contents.find((node: Node) => node.basename === (file instanceof File ? file.name : file.basename))
}).filter(Boolean) as (File|Node)[]
// List of incoming files that are NOT in conflict
const uploads = files.filter((file: File|Node) => {
return !conflicts.includes(file)
})
// Let the user choose what to do with the conflicting files
const { selected, renamed } = await openConflictPicker(destination.path, conflicts, contents)
logger.debug('Conflict resolution', { uploads, selected, renamed })
// If the user selected nothing, we cancel the upload
if (selected.length === 0 && renamed.length === 0) {
// User skipped
showInfo(t('files', 'Conflicts resolution skipped'))
logger.info('User skipped the conflict resolution')
return []
}
// Update the list of files to upload
return [...uploads, ...selected, ...renamed] as (typeof files)
} catch (error) {
console.error(error)
// User cancelled
showError(t('files', 'Upload cancelled'))
logger.error('User cancelled the upload')
}
return []
}
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