69 lines
1.8 KiB
Swift
69 lines
1.8 KiB
Swift
import Foundation
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import WatchConnectivity
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enum ConnectionError: Error {
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case needsUnlock
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case decoding(Error)
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}
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protocol Connection {
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func sendMessage(completionHandler: @escaping (Result<WatchMessage, ConnectionError>) -> Void)
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}
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final class WatchConnection: NSObject {
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private let session: WCSession
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init(session: WCSession) {
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self.session = session
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super.init()
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session.delegate = self
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session.activate()
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}
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private func scheduledSendMessage(completionHandler: @escaping (Result<WatchMessage, ConnectionError>) -> Void) {
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Timer.scheduledTimer(withTimeInterval: 1, repeats: false) { [weak self] _ in
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self?.sendMessage(completionHandler: completionHandler)
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}
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}
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}
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// MARK: - WCSessionDelegate
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extension WatchConnection: WCSessionDelegate {
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func session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?) {
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}
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}
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// MARK: - Connection
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extension WatchConnection: Connection {
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func sendMessage(completionHandler: @escaping (Result<WatchMessage, ConnectionError>) -> Void) {
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guard session.activationState == .activated else {
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scheduledSendMessage(completionHandler: completionHandler)
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return
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}
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guard !session.iOSDeviceNeedsUnlockAfterRebootForReachability else {
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completionHandler(.failure(.needsUnlock))
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return
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}
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guard session.isReachable else {
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scheduledSendMessage(completionHandler: completionHandler)
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return
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}
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session.sendMessage([:]) { dictionary in
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do {
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let data = try JSONSerialization.data(withJSONObject: dictionary)
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let message = try JSONDecoder().decode(WatchMessage.self, from: data)
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completionHandler(.success(message))
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} catch {
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completionHandler(.failure(.decoding(error)))
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}
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}
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}
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}
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