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| // MARK: Updates | |
| public class Updates: UpdatesProtocol { | |
| enum StorageKeys: String { | |
| case postponedVersion = "UpdatesPostponedVersion" | |
| } | |
| private let userDefaults = UserDefaults.standard | |
| private let queue = DispatchQueue(label: "com.limbo.FormsUpdates", qos: .default) | |
| private let bundleId: String | |
| private let currentVersion: Version? | |
| private var _appStoreVersion: Version? | |
| private var postponedVersion: Version? { | |
| get { return Version(self.userDefaults.object(forKey: StorageKeys.postponedVersion.rawValue) as? String) } | |
| set { self.userDefaults.set(newValue?.description, forKey: StorageKeys.postponedVersion.rawValue) } | |
| } | |
| public convenience init(bundle bundleId: String, | |
| version currentVersion: String) { | |
| self.init( | |
| bundle: bundleId, | |
| version: Version(currentVersion)) | |
| } | |
| public init(bundle bundleId: String, | |
| version currentVersion: Version?) { | |
| self.bundleId = bundleId | |
| self.currentVersion = currentVersion | |
| } | |
| public func check(completion: @escaping ((UpdatesStatus) -> Void)) { | |
| self.check(cancelToken: nil, completion: completion) | |
| } | |
| public func check(cancelToken: CancelToken?, | |
| completion: @escaping ((UpdatesStatus) -> Void)) { | |
| self.queue.async { | |
| let status: UpdatesStatus = { | |
| guard let appStore: Version = self.appStoreVersion() else { return .undefined } | |
| guard let current: Version = self.currentVersion else { return .newVersion(appStore) } | |
| guard appStore > current else { return .noChanges } | |
| guard let postponed: Version = self.postponedVersion, | |
| appStore != postponed else { return .newVersion(appStore) } | |
| return UpdatesStatus.postponed | |
| }() | |
| guard cancelToken?.isCancelled != true else { return } | |
| DispatchQueue.main.async { completion(status) } | |
| } | |
| } | |
| public func reset() { | |
| self.postponedVersion = nil | |
| } | |
| public func postpone() { | |
| self.postponedVersion = self._appStoreVersion | |
| } | |
| private func appStoreVersion() -> Version? { | |
| let version: Version? = { | |
| let stringURL = String(format: "http://itunes.apple.com/lookup?bundleId=%@", self.bundleId) | |
| guard let url = URL(string: stringURL), | |
| let data = try? Data(contentsOf: url), | |
| let jsonObject = try? JSONSerialization.jsonObject(with: data, options: [.allowFragments]), | |
| let json = jsonObject as? [String: Any], | |
| let results = json["results"] as? [Any], | |
| let result = results.first as? [String: Any], | |
| let version = result["version"] as? String else { return nil } | |
| return Version(version) | |
| }() | |
| self._appStoreVersion = version | |
| return version | |
| } | |
| } |
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