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109 lines
4.1 KiB
Swift
109 lines
4.1 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Combine
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import Mastodon
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import SDWebImage
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import ServiceLayer
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import UserNotifications
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final class NotificationService: UNNotificationServiceExtension {
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override init() {
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super.init()
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try? ImageCacheConfiguration(environment: Self.environment).configure()
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}
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var contentHandler: ((UNNotificationContent) -> Void)?
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var bestAttemptContent: UNMutableNotificationContent?
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var cancellables = Set<AnyCancellable>()
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override func didReceive(
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_ request: UNNotificationRequest,
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withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
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self.contentHandler = contentHandler
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bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
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guard let bestAttemptContent = bestAttemptContent else { return }
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let parsingService = PushNotificationParsingService(environment: Self.environment)
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let decryptedJSON: Data
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let identityId: Identity.Id
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let pushNotification: PushNotification
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do {
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(decryptedJSON, identityId) = try parsingService.extractAndDecrypt(userInfo: request.content.userInfo)
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pushNotification = try MastodonDecoder().decode(PushNotification.self, from: decryptedJSON)
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} catch {
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contentHandler(bestAttemptContent)
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return
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}
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bestAttemptContent.userInfo[PushNotificationParsingService.pushNotificationUserInfoKey] = decryptedJSON
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bestAttemptContent.title = pushNotification.title
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bestAttemptContent.body = XMLUnescaper(string: pushNotification.body).unescape()
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let appPreferences = AppPreferences(environment: Self.environment)
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if appPreferences.notificationSounds.contains(pushNotification.notificationType) {
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bestAttemptContent.sound = .default
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}
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if appPreferences.notificationAccountName,
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case let .success(handle) = parsingService.handle(identityId: identityId) {
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bestAttemptContent.subtitle = handle
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}
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Self.attachment(imageURL: pushNotification.icon.url)
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.map { [$0] }
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.replaceError(with: [])
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.handleEvents(receiveOutput: { bestAttemptContent.attachments = $0 })
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.zip(parsingService.title(pushNotification: pushNotification, identityId: identityId)
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.replaceError(with: pushNotification.title)
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.handleEvents(receiveOutput: { bestAttemptContent.title = $0 }))
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.sink { _ in contentHandler(bestAttemptContent) }
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.store(in: &cancellables)
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}
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override func serviceExtensionTimeWillExpire() {
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if let contentHandler = contentHandler, let bestAttemptContent = bestAttemptContent {
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contentHandler(bestAttemptContent)
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}
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}
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}
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private extension NotificationService {
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private static let environment = AppEnvironment.live(
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userNotificationCenter: .current(),
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reduceMotion: { false },
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autoplayVideos: { true })
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enum ImageError: Error {
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case dataMissing
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}
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static func attachment(imageURL: URL) -> AnyPublisher<UNNotificationAttachment, Error> {
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let fileName = imageURL.lastPathComponent
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let fileURL = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true)
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.appendingPathComponent(fileName)
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return Future<UNNotificationAttachment, Error> { promise in
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SDWebImageManager.shared.loadImage(with: imageURL, options: [], progress: nil) { _, data, error, _, _, _ in
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if let error = error {
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promise(.failure(error))
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} else if let data = data {
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let result = Result<UNNotificationAttachment, Error> {
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try data.write(to: fileURL)
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return try UNNotificationAttachment(identifier: fileName, url: fileURL)
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}
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promise(result)
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} else {
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promise(.failure(ImageError.dataMissing))
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}
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}
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}
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.eraseToAnyPublisher()
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}
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}
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