space-ios/iOSClient/Networking/NCNetworkingNotificationCenter.swift

//
//  NCNetworkingNotificationCenter.swift
//  Nextcloud
//
//  Created by Marino Faggiana on 19/04/2020.
//  Copyright © 2020 Marino Faggiana. All rights reserved.
//
//  Author Marino Faggiana <marino.faggiana@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 Foundation

@objc class NCNetworkingNotificationCenter: NSObject, UIDocumentInteractionControllerDelegate {
    @objc public static let shared: NCNetworkingNotificationCenter = {
        let instance = NCNetworkingNotificationCenter()
        
        NotificationCenter.default.addObserver(instance, selector: #selector(downloadedFile(_:)), name: NSNotification.Name(rawValue: k_notificationCenter_downloadedFile), object: nil)
        NotificationCenter.default.addObserver(instance, selector: #selector(uploadedFile(_:)), name: NSNotification.Name(rawValue: k_notificationCenter_uploadedFile), object: nil)
        
        return instance
    }()
    
    let appDelegate = UIApplication.shared.delegate as! AppDelegate
    var viewerQuickLook: NCViewerQuickLook?
    var documentController: UIDocumentInteractionController?
    
    //MARK: - Download

    @objc func downloadedFile(_ notification: NSNotification) {
            
        if let userInfo = notification.userInfo as NSDictionary? {
            if let ocId = userInfo["ocId"] as? String, let selector = userInfo["selector"] as? String, let errorCode = userInfo["errorCode"] as? Int, let errorDescription = userInfo["errorDescription"] as? String {
                if let metadata = NCManageDatabase.sharedInstance.getMetadataFromOcId(ocId) {
                    if metadata.account != appDelegate.account { return }
                    
                    if errorCode == 0 {
                        
                        let fileURL = URL(fileURLWithPath: CCUtility.getDirectoryProviderStorageOcId(metadata.ocId, fileNameView: metadata.fileNameView))
                        documentController = UIDocumentInteractionController(url: fileURL)
                        documentController?.delegate = self

                        switch selector {
                        case selectorLoadFileQuickLook:
                            
                            let fileNamePath = NSTemporaryDirectory() + metadata.fileNameView
                            CCUtility.copyFile(atPath: CCUtility.getDirectoryProviderStorageOcId(metadata.ocId, fileNameView: metadata.fileNameView), toPath: fileNamePath)

                            viewerQuickLook = NCViewerQuickLook.init()
                            viewerQuickLook?.quickLook(url: URL(fileURLWithPath: fileNamePath))
                            
                        case selectorLoadFileView:
                            
                            if UIApplication.shared.applicationState == UIApplication.State.active {
                                                            
                                if metadata.contentType.contains("opendocument") && !NCUtility.shared.isRichDocument(metadata) {
                                    
                                    if let view = appDelegate.window?.rootViewController?.view {
                                        documentController?.presentOptionsMenu(from: CGRect.zero, in: view, animated: true)
                                    }
                                    
                                } else if metadata.typeFile == k_metadataTypeFile_compress || metadata.typeFile == k_metadataTypeFile_unknown {

                                    if let view = appDelegate.window?.rootViewController?.view {
                                        documentController?.presentOptionsMenu(from: CGRect.zero, in: view, animated: true)
                                    }
                                    
                                } else if metadata.typeFile == k_metadataTypeFile_imagemeter {
                                    
                                    if let view = appDelegate.window?.rootViewController?.view {
                                        documentController?.presentOptionsMenu(from: CGRect.zero, in: view, animated: true)
                                    }
                                    
                                } else {
                                    
                                    NCViewer.shared.view(viewController: self.appDelegate.activeViewController, metadata: metadata, metadatas: [metadata])
                                }
                            }
                            
                        case selectorOpenIn:
                            
                            if UIApplication.shared.applicationState == UIApplication.State.active {
                                
                                if let view = appDelegate.window?.rootViewController?.view {
                                    documentController?.presentOptionsMenu(from: CGRect.zero, in: view, animated: true)
                                }
                            }
                            
                        case selectorLoadCopy:
                            
                            var items = UIPasteboard.general.items
                            
                            do {
                                let etagPasteboard = try NSKeyedArchiver.archivedData(withRootObject: metadata.ocId, requiringSecureCoding: false)
                                items.append([k_metadataKeyedUnarchiver:etagPasteboard])
                            } catch {
                                print("error")
                            }
                            
                            UIPasteboard.general.setItems(items, options: [:])
                            
                        case selectorLoadOffline:
                            
                            NCManageDatabase.sharedInstance.setLocalFile(ocId: metadata.ocId, offline: true)
                           
                        case selectorSaveAlbum:
                            
                            let fileNamePath = CCUtility.getDirectoryProviderStorageOcId(metadata.ocId, fileNameView: metadata.fileNameView)!
                            let status = PHPhotoLibrary.authorizationStatus()

                            if metadata.typeFile == k_metadataTypeFile_image && status == PHAuthorizationStatus.authorized {
                                
                                if let image = UIImage.init(contentsOfFile: fileNamePath) {
                                    UIImageWriteToSavedPhotosAlbum(image, self, #selector(SaveAlbum(_:didFinishSavingWithError:contextInfo:)), nil)
                                } else {
                                    NCContentPresenter.shared.messageNotification("_save_selected_files_", description: "_file_not_saved_cameraroll_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorFileNotSaved))
                                }
                                
                            } else if metadata.typeFile == k_metadataTypeFile_video && status == PHAuthorizationStatus.authorized {
                                
                                if UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(fileNamePath) {
                                    UISaveVideoAtPathToSavedPhotosAlbum(fileNamePath, self, #selector(SaveAlbum(_:didFinishSavingWithError:contextInfo:)), nil)
                                } else {
                                    NCContentPresenter.shared.messageNotification("_save_selected_files_", description: "_file_not_saved_cameraroll_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorFileNotSaved))
                                }
                                
                            } else if status != PHAuthorizationStatus.authorized {
                                
                                NCContentPresenter.shared.messageNotification("_access_photo_not_enabled_", description: "_access_photo_not_enabled_msg_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorFileNotSaved))
                            }
                            
                        default:
                            
                            break
                        }
                                
                    } else {
                        
                        // File do not exists on server, remove in local
                        if (errorCode == k_CCErrorResourceNotFound || errorCode == k_CCErrorBadServerResponse) {
                            
                            do {
                                try FileManager.default.removeItem(atPath: CCUtility.getDirectoryProviderStorageOcId(metadata.ocId))
                            } catch { }
                            
                            NCManageDatabase.sharedInstance.deleteMetadata(predicate: NSPredicate(format: "ocId == %@", metadata.ocId))
                            NCManageDatabase.sharedInstance.deleteLocalFile(predicate: NSPredicate(format: "ocId == %@", metadata.ocId))
                            
                        } else {
                            
                            NCContentPresenter.shared.messageNotification("_download_file_", description: errorDescription, delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode)
                        }
                    }
                }
            }
        }
    }
    
    @objc func openShare(ViewController: UIViewController, metadata: tableMetadata, indexPage: Int) {
        
        let shareNavigationController = UIStoryboard(name: "NCShare", bundle: nil).instantiateInitialViewController() as! UINavigationController
        let shareViewController = shareNavigationController.topViewController as! NCSharePaging
        
        shareViewController.metadata = metadata
        shareViewController.indexPage = indexPage
        
        shareNavigationController.modalPresentationStyle = .formSheet
        ViewController.present(shareNavigationController, animated: true, completion: nil)
    }
        
    @objc func downloadOpen(metadata: tableMetadata, selector: String) {
        
        if CCUtility.fileProviderStorageExists(metadata.ocId, fileNameView: metadata.fileNameView) {
            
            NotificationCenter.default.postOnMainThread(name: k_notificationCenter_downloadedFile, userInfo: ["ocId": metadata.ocId, "selector": selector, "errorCode": 0, "errorDescription": "" ])
                                    
        } else {
            
            NCNetworking.shared.download(metadata: metadata, selector: selector) { (_) in }
        }
    }
    
    @objc func SaveAlbum(_ image: UIImage, didFinishSavingWithError error: Error?, contextInfo: UnsafeRawPointer) {
        
        if error != nil {
            NCContentPresenter.shared.messageNotification("_save_selected_files_", description: "_file_not_saved_cameraroll_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorFileNotSaved))
        }
    }
    
    //MARK: - Upload

    @objc func uploadedFile(_ notification: NSNotification) {
    
        if let userInfo = notification.userInfo as NSDictionary? {
            if let ocId = userInfo["ocId"] as? String, let errorCode = userInfo["errorCode"] as? Int, let errorDescription = userInfo["errorDescription"] as? String {
                if let metadata = NCManageDatabase.sharedInstance.getMetadataFromOcId(ocId) {
                    if metadata.account == appDelegate.account {
                        if errorCode != 0 {
                            if errorCode != -999 && errorCode != 401 && errorDescription != "" {
                                NCContentPresenter.shared.messageNotification("_upload_file_", description: errorDescription, delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode)
                            }
                        }
                    }
                }
            }
        }
    }
}