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//
// NCViewerQuickLook.swift
// Nextcloud
//
// Created by Marino Faggiana on 03/05/2020.
// Copyright © 2020 Marino Faggiana. All rights reserved.
// Copyright © 2022 Henrik Storch. All rights reserved.
//
// Author Marino Faggiana <marino.faggiana@nextcloud.com>
// Author Henrik Storch <henrik.storch@nextcloud.com>
//
// 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, 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 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/>.
//
import UIKit
import QuickLook
import NextcloudKit
@objc class NCViewerQuickLook: QLPreviewController {
let url: URL
var previewItems: [PreviewItem] = []
var isEditingEnabled: Bool
var metadata: tableMetadata?
// if the document has any changes (annotations)
var hasChanges = false
// used to display the save alert
var parentVC: UIViewController?
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
@objc init(with url: URL, isEditingEnabled: Bool, metadata: tableMetadata?) {
self.url = url
self.isEditingEnabled = isEditingEnabled
if let metadata = metadata {
self.metadata = tableMetadata.init(value: metadata)
}
let previewItem = PreviewItem()
previewItem.previewItemURL = url
self.previewItems.append(previewItem)
super.init(nibName: nil, bundle: nil)
self.dataSource = self
self.delegate = self
self.currentPreviewItemIndex = 0
}
override func viewDidLoad() {
super.viewDidLoad()
guard isEditingEnabled else { return }
if metadata?.livePhoto == true {
let error = NKError(errorCode: NCGlobal.shared.errorCharactersForbidden, errorDescription: "_message_disable_overwrite_livephoto_")
NCContentPresenter.shared.showInfo(error: error)
}
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
// needs to be saved bc in didDisappear presentingVC is already nil
self.parentVC = presentingViewController
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
guard isEditingEnabled, hasChanges, let metadata = metadata else { return }
let alertController = UIAlertController(title: NSLocalizedString("_save_", comment: ""), message: nil, preferredStyle: .alert)
var message: String?
if metadata.livePhoto {
message = NSLocalizedString("_message_disable_overwrite_livephoto_", comment: "")
} else if metadata.lock {
message = NSLocalizedString("_file_locked_no_override_", comment: "")
} else {
alertController.addAction(UIAlertAction(title: NSLocalizedString("_overwrite_original_", comment: ""), style: .default) { _ in
self.saveModifiedFile(override: true)
})
}
alertController.message = message
alertController.addAction(UIAlertAction(title: NSLocalizedString("_save_as_copy_", comment: ""), style: .default) { _ in
self.saveModifiedFile(override: false)
})
alertController.addAction(UIAlertAction(title: NSLocalizedString("_discard_changes_", comment: ""), style: .destructive) { _ in })
parentVC?.present(alertController, animated: true)
}
}
extension NCViewerQuickLook: QLPreviewControllerDataSource, QLPreviewControllerDelegate {
func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
previewItems.count
}
func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
previewItems[index]
}
func previewController(_ controller: QLPreviewController, editingModeFor previewItem: QLPreviewItem) -> QLPreviewItemEditingMode {
return isEditingEnabled ? .createCopy : .disabled
}
fileprivate func saveModifiedFile(override: Bool) {
guard let metadata = self.metadata else { return }
let ocId = NSUUID().uuidString
let size = NCUtilityFileSystem.shared.getFileSize(filePath: url.path)
if !override {
let fileName = NCUtilityFileSystem.shared.createFileName(metadata.fileNameView, serverUrl: metadata.serverUrl, account: metadata.account)
metadata.fileName = fileName
metadata.fileNameView = fileName
}
guard let fileNamePath = CCUtility.getDirectoryProviderStorageOcId(ocId, fileNameView: metadata.fileNameView),
NCUtilityFileSystem.shared.copyFile(atPath: url.path, toPath: fileNamePath) else { return }
let metadataForUpload = NCManageDatabase.shared.createMetadata(
account: metadata.account,
user: metadata.user,
userId: metadata.userId,
fileName: metadata.fileName,
fileNameView: metadata.fileNameView,
ocId: ocId,
serverUrl: metadata.serverUrl,
urlBase: metadata.urlBase,
url: url.path,
contentType: "")
metadataForUpload.session = NCNetworking.shared.sessionIdentifierBackground
if override {
metadataForUpload.sessionSelector = NCGlobal.shared.selectorUploadFileNODelete
} else {
metadataForUpload.sessionSelector = NCGlobal.shared.selectorUploadFile
}
metadataForUpload.size = size
metadataForUpload.status = NCGlobal.shared.metadataStatusWaitUpload
(UIApplication.shared.delegate as? AppDelegate)?.networkingProcessUpload?.createProcessUploads(metadatas: [metadataForUpload], completion: { _ in })
}
func previewController(_ controller: QLPreviewController, didSaveEditedCopyOf previewItem: QLPreviewItem, at modifiedContentsURL: URL) {
// easier to handle that way than to use `.updateContents`
// needs to be moved otherwise it will only be called once!
guard NCUtilityFileSystem.shared.moveFile(atPath: modifiedContentsURL.path, toPath: url.path) else { return }
hasChanges = true
}
}
class PreviewItem: NSObject, QLPreviewItem {
var previewItemURL: URL?
}
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