kkostiuk | 74d1ae4 | 2021-06-17 11:10:15 -0400 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2021-2022 Savoir-faire Linux Inc. |
| 3 | * |
| 4 | * Author: Kateryna Kostiuk <kateryna.kostiuk@savoirfairelinux.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 3 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | */ |
| 20 | |
| 21 | import Foundation |
| 22 | import UIKit |
| 23 | import MobileCoreServices |
| 24 | import Photos |
| 25 | import os |
| 26 | |
| 27 | class AdapterService { |
| 28 | enum InteractionAttributes: String { |
| 29 | case interactionId = "id" |
| 30 | case type = "type" |
| 31 | case invited = "invited" |
| 32 | case fileId = "fileId" |
| 33 | case displayName = "displayName" |
| 34 | case body = "body" |
| 35 | case author = "author" |
| 36 | case timestamp = "timestamp" |
| 37 | case parent = "linearizedParent" |
| 38 | case action = "action" |
| 39 | case duration = "duration" |
| 40 | } |
| 41 | |
| 42 | enum InteractionType: String { |
| 43 | case message = "text/plain" |
| 44 | case fileTransfer = "application/data-transfer+json" |
| 45 | } |
| 46 | |
| 47 | enum EventType: Int { |
| 48 | case message |
| 49 | case fileTransferDone |
| 50 | case fileTransferInProgress |
| 51 | case syncCompleted |
| 52 | case call |
| 53 | } |
| 54 | |
| 55 | enum PeerConnectionRequestType { |
| 56 | case call(peerId: String, isVideo: Bool) |
| 57 | case gitMessage |
| 58 | case unknown |
| 59 | } |
| 60 | |
| 61 | enum DataTransferEventCode: Int { |
| 62 | case invalid |
| 63 | case created |
| 64 | case unsupported |
| 65 | case waitPeeracceptance |
| 66 | case waitHostAcceptance |
| 67 | case ongoing |
| 68 | case finished |
| 69 | case closedByHost |
| 70 | case closedByPeer |
| 71 | case invalidPathname |
| 72 | case unjoinablePeer |
| 73 | |
| 74 | func isCompleted() -> Bool { |
| 75 | switch self { |
| 76 | case .finished, .closedByHost, .closedByPeer, .unjoinablePeer, .invalidPathname: |
| 77 | return true |
| 78 | default: |
| 79 | return false |
| 80 | } |
| 81 | } |
| 82 | } |
| 83 | private let maxSizeForAutoaccept = 20 * 1024 * 1024 |
| 84 | |
| 85 | typealias EventData = (accountId: String, jamiId: String, content: String) |
| 86 | |
| 87 | private let adapter: Adapter |
| 88 | var eventHandler: ((EventType, EventData) -> Void)? |
| 89 | var loadingFiles = [String: EventData]() |
| 90 | |
| 91 | init(withAdapter adapter: Adapter) { |
| 92 | self.adapter = adapter |
| 93 | Adapter.delegate = self |
| 94 | } |
| 95 | |
| 96 | func startAccountsWithListener(listener: @escaping (EventType, EventData) -> Void) { |
| 97 | self.eventHandler = listener |
| 98 | start() |
| 99 | } |
| 100 | |
| 101 | func decrypt(keyPath: String, messagesPath: String, value: [String: Any]) -> PeerConnectionRequestType { |
| 102 | let result = adapter.decrypt(keyPath, treated: messagesPath, value: value) |
| 103 | guard let peerId = result?.keys.first, |
| 104 | let type = result?.values.first else { |
| 105 | return .unknown} |
| 106 | switch type { |
| 107 | case "videoCall": |
| 108 | return PeerConnectionRequestType.call(peerId: peerId, isVideo: true) |
| 109 | case "audioCall": |
| 110 | return PeerConnectionRequestType.call(peerId: peerId, isVideo: false) |
| 111 | case "text/plain", "application/im-gitmessage-id": |
| 112 | return PeerConnectionRequestType.gitMessage |
| 113 | default: |
| 114 | return .unknown |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | func start() { |
| 119 | self.adapter.start() |
| 120 | } |
| 121 | |
| 122 | func stop() { |
| 123 | self.adapter.stop() |
| 124 | } |
| 125 | |
| 126 | private func fileAlreadyDownloaded(fileName: String, accountId: String, conversationId: String) -> Bool { |
| 127 | guard let url = getFileUrlFor(fileName: fileName, accountId: accountId, conversationId: conversationId) else { |
| 128 | return false |
| 129 | } |
| 130 | return FileManager.default.fileExists(atPath: url.path) |
| 131 | } |
| 132 | |
| 133 | private func getFileUrlFor(fileName: String, accountId: String, conversationId: String) -> URL? { |
| 134 | guard let documentsURL = Constants.documentsPath else { |
| 135 | return nil |
| 136 | } |
| 137 | let pathUrl = documentsURL.appendingPathComponent(accountId) |
| 138 | .appendingPathComponent("conversation_data") |
| 139 | .appendingPathComponent(conversationId) |
| 140 | .appendingPathComponent(fileName) |
| 141 | return pathUrl |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | extension AdapterService: AdapterDelegate { |
| 146 | |
| 147 | func didReceiveMessage(_ message: [String: String], |
| 148 | from senderAccount: String, |
| 149 | messageId: String, |
| 150 | to receiverAccountId: String) { |
| 151 | guard let content = message["text/plain"], |
| 152 | let handler = self.eventHandler else { return } |
| 153 | handler(.message, EventData(receiverAccountId, senderAccount, content)) |
| 154 | } |
| 155 | |
| 156 | func dataTransferEvent(withFileId transferId: String, withEventCode eventCode: Int, accountId: String, conversationId: String, interactionId: String) { |
| 157 | guard let handler = self.eventHandler, |
| 158 | let data = loadingFiles[transferId], |
| 159 | let code = DataTransferEventCode(rawValue: eventCode), |
| 160 | code.isCompleted() else { return } |
| 161 | handler(.fileTransferDone, data) |
| 162 | loadingFiles.removeValue(forKey: transferId) |
| 163 | } |
| 164 | |
| 165 | func conversationSyncCompleted(accountId: String) { |
| 166 | guard let handler = self.eventHandler else { |
| 167 | return |
| 168 | } |
| 169 | handler(.syncCompleted, EventData(accountId, "", "")) |
| 170 | } |
| 171 | |
| 172 | func receivedCallConnectionRequest(accountId: String, peerId: String, hasVideo: Bool) { |
| 173 | guard let handler = self.eventHandler else { |
| 174 | return |
| 175 | } |
| 176 | handler(.call, EventData(accountId, peerId, "\(hasVideo)")) |
| 177 | } |
| 178 | |
| 179 | func newInteraction(conversationId: String, accountId: String, message: [String: String]) { |
| 180 | guard let handler = self.eventHandler else { |
| 181 | return |
| 182 | } |
| 183 | guard let type = message[InteractionAttributes.type.rawValue], |
| 184 | let interactionType = InteractionType(rawValue: type) else { |
| 185 | return |
| 186 | } |
| 187 | let from = message[InteractionAttributes.author.rawValue] ?? "" |
| 188 | let content = message[InteractionAttributes.body.rawValue] ?? "" |
| 189 | switch interactionType { |
| 190 | case .message: |
| 191 | handler(.message, EventData(accountId, from, content)) |
| 192 | case.fileTransfer: |
| 193 | guard let fileId = message[InteractionAttributes.fileId.rawValue], |
| 194 | let url = self.getFileUrlFor(fileName: fileId, accountId: accountId, conversationId: conversationId) else { |
| 195 | return |
| 196 | } |
| 197 | let data = EventData(accountId, from, url.path) |
| 198 | /// check if the file has already been downloaded. If no, download the file if filesize is less than a downloading limit |
| 199 | if fileAlreadyDownloaded(fileName: fileId, accountId: accountId, conversationId: conversationId) { |
| 200 | handler(.fileTransferDone, data) |
| 201 | } else { |
| 202 | guard let interactionId = message[InteractionAttributes.interactionId.rawValue], |
| 203 | let size = message["totalSize"], |
| 204 | (Int(size) ?? (maxSizeForAutoaccept + 1)) <= maxSizeForAutoaccept else { return } |
| 205 | let path = "" |
| 206 | self.adapter.downloadFile(withFileId: fileId, accountId: accountId, conversationId: conversationId, interactionId: interactionId, withFilePath: path) |
| 207 | self.loadingFiles[fileId] = data |
| 208 | handler(.fileTransferInProgress, data) |
| 209 | } |
| 210 | } |
| 211 | } |
| 212 | } |