space-ios/iOSClient/Networking/NCNetworkingNotificationCenter.swift

//
//  NCNetworkingNotificationCenter.swift
//  Nextcloud
//
//  Created by Marino Faggiana on 19/04/2020.
//  Copyright © 2018 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 {
    @objc public static let shared: NCNetworkingNotificationCenter = {
        let instance = NCNetworkingNotificationCenter()
        
        NotificationCenter.default.addObserver(instance, selector: #selector(downloadFileStart(_:)), name: NSNotification.Name(rawValue: k_notificationCenter_downloadFileStart), object: nil)
        NotificationCenter.default.addObserver(instance, selector: #selector(downloadedFile(_:)), name: NSNotification.Name(rawValue: k_notificationCenter_downloadedFile), object: nil)

        NotificationCenter.default.addObserver(instance, selector: #selector(uploadFileStart(_:)), name: NSNotification.Name(rawValue: k_notificationCenter_uploadFileStart), 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
    
    //MARK: - Download

    @objc func downloadFileStart(_ notification: NSNotification) {
        
        if let userInfo = notification.userInfo as NSDictionary? {
            if let ocId = userInfo["ocId"] as? String, let serverUrl = userInfo["serverUrl"] as? String, let _ = userInfo["task"] as? URLSessionDownloadTask {
                
                NCMainCommon.sharedInstance.reloadDatasource(ServerUrl: serverUrl, ocId: ocId, action: Int32(k_action_MOD))
                appDelegate.updateApplicationIconBadgeNumber()
            }
        }
    }
    
    @objc func downloadedFile(_ notification: NSNotification) {
            
        if let userInfo = notification.userInfo as NSDictionary? {
            if let metadata = userInfo["metadata"] as? tableMetadata, let selector = userInfo["selector"] as? String, let errorCode = userInfo["errorCode"] as? Int, let errorDescription = userInfo["errorDescription"] as? String {
        
                if metadata.account != appDelegate.activeAccount { return }
                
                if errorCode == 0 {
                    
                    NCMainCommon.sharedInstance.reloadDatasource(ServerUrl: metadata.serverUrl, ocId: metadata.ocId, action: Int32(k_action_MOD))
                    
                    // Synchronized
                    if selector == selectorDownloadSynchronize {
                        appDelegate.updateApplicationIconBadgeNumber()
                        appDelegate.startLoadAutoDownloadUpload()
                        return
                    }
                    
                    // open View File
                    if (selector == selectorLoadFileView || selector == selectorLoadFileViewFavorite || selector == selectorLoadFileInternalView) && UIApplication.shared.applicationState == UIApplication.State.active {
                    
                        if metadata.contentType.contains("opendocument") && !NCUtility.sharedInstance.isRichDocument(metadata) {
                            metadata.typeFile = k_metadataTypeFile_unknown
                        }
                        
        #if HC
                        if metadata.typeFile == k_metadataTypeFile_imagemeter {
                            
                            if !IMUtility.shared.IMUnzip(metadata: metadata) {
                                NCContentPresenter.shared.messageNotification("_error_", description: "Bundle imagemeter error. 🤷‍♂️", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: 0)
                                return
                            }
                            
                            let storyboard = UIStoryboard(name: "IMImagemeter", bundle: nil)
                            let imagemeterViewer = storyboard.instantiateInitialViewController() as! IMImagemeterViewer
                            imagemeterViewer.metadata = metadata
                            imagemeterViewer.modalPresentationStyle = UIModalPresentationStyle.fullScreen
                            imagemeterViewer.imagemeterViewerDelegate = self
                            
                            self.appDelegate.window.rootViewController?.present(imagemeterViewer, animated: true, completion: nil)
                            
                            return
                        }
        #else
                        if metadata.typeFile == k_metadataTypeFile_imagemeter {
                            NCMainCommon.sharedInstance.openIn(metadata: metadata, selector: selector)
                            return
                        }
        #endif
                        
                        if metadata.typeFile == k_metadataTypeFile_compress || metadata.typeFile == k_metadataTypeFile_unknown {

                            NCMainCommon.sharedInstance.openIn(metadata: metadata, selector: selector)
                            
                        } else {
                            
                            if appDelegate.activeMain.view.window != nil {
                                appDelegate.activeMain.shouldPerformSegue(metadata, selector: selector)
                            } else if appDelegate.activeFavorites.view.window != nil {
                                appDelegate.activeFavorites.shouldPerformSegue(metadata, selector: selector)
                            }
                        }
                    }
                    
                    // Open in...
                    if (selector == selectorOpenIn || selector == selectorOpenInDetail) && UIApplication.shared.applicationState == UIApplication.State.active {

                        NCMainCommon.sharedInstance.openIn(metadata: metadata, selector: selector)
                    }
                    
                    // Save to Photo Album
                    if selector == selectorSave {
                        
                        appDelegate.activeMain.save(toPhotoAlbum: metadata)
                    }
                    
                    // Copy File
                    if selector == selectorLoadCopy {
                        
                        appDelegate.activeMain.copyFile(toPasteboard: metadata)
                    }
                    
                    // Set as available offline
                    if selector == selectorLoadOffline {
                        
                        NCManageDatabase.sharedInstance.setLocalFile(ocId: metadata.ocId, offline: true)
                    }
                                
                    appDelegate.startLoadAutoDownloadUpload()
                    
                } else {
                    
                    // File do not exists on server, remove in local
                    if (errorCode == kOCErrorServerPathNotFound || errorCode == -1011) { // - 1011 = kCFURLErrorBadServerResponse
                        
                        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))
                        
                        NCMainCommon.sharedInstance.reloadDatasource(ServerUrl: metadata.serverUrl, ocId: metadata.ocId, action: Int32(k_action_DEL))
                        
                    } else {
                        NCContentPresenter.shared.messageNotification("_download_file_", description: errorDescription, delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode)
                    }
                }
            
                appDelegate.startLoadAutoDownloadUpload()
            }
        }
    }
    
    //MARK: - Upload

    @objc func uploadFileStart(_ notification: NSNotification) {
        
        if let userInfo = notification.userInfo as NSDictionary? {
            if let ocId = userInfo["ocId"] as? String, let serverUrl = userInfo["serverUrl"] as? String, let _ = userInfo["task"] as? URLSessionUploadTask {
                
                NCMainCommon.sharedInstance.reloadDatasource(ServerUrl: serverUrl, ocId: ocId, action: Int32(k_action_MOD))
                appDelegate.updateApplicationIconBadgeNumber()
            }
        }
    }
    
    @objc func uploadedFile(_ notification: NSNotification) {
    
        if let userInfo = notification.userInfo as NSDictionary? {
            if let metadata = userInfo["metadata"] as? tableMetadata, let errorCode = userInfo["errorCode"] as? Int, let errorDescription = userInfo["errorDescription"] as? String {
                
                NCMainCommon.sharedInstance.reloadDatasource(ServerUrl: metadata.serverUrl, ocId: metadata.ocId, action: Int32(k_action_MOD))
                
                if metadata.account == appDelegate.activeAccount {
                    if errorCode == 0 {
                        appDelegate.startLoadAutoDownloadUpload()
                    } else {
                        if errorCode != -999 && errorCode != kOCErrorServerUnauthorized && errorDescription != "" {
                            NCContentPresenter.shared.messageNotification("_upload_file_", description: errorDescription, delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode)
                        }
                    }
                }
            }
        }
    }
    
}