push notification services

src/iOS/Services/iOSPushNotificationHandler.cs

@@ -0,0 +1,66 @@
+using Foundation;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Diagnostics;
+using Xamarin.Forms;
+
+namespace Bit.iOS.Services
+{
+    public class iOSPushNotificationHandler
+    {
+        private const string TokenSetting = "token";
+        private const string DomainName = "iOSPushNotificationService";
+
+        private readonly IPushNotificationListener _pushNotificationListener;
+
+        public iOSPushNotificationHandler(
+            IPushNotificationListener pushNotificationListener)
+        {
+            _pushNotificationListener = pushNotificationListener;
+        }
+
+        public void OnMessageReceived(NSDictionary userInfo)
+        {
+            var json = DictionaryToJson(userInfo);
+            var values = JObject.Parse(json);
+            var keyAps = new NSString("aps");
+            if(userInfo.ContainsKey(keyAps) && userInfo.ValueForKey(keyAps) is NSDictionary aps)
+            {
+                foreach(var apsKey in aps)
+                {
+                    if(!values.TryGetValue(apsKey.Key.ToString(), out JToken temp))
+                    {
+                        values.Add(apsKey.Key.ToString(), apsKey.Value.ToString());
+                    }
+                }
+            }
+            _pushNotificationListener.OnMessage(values, Device.iOS);
+        }
+
+        public void OnErrorReceived(NSError error)
+        {
+            Debug.WriteLine("{0} - Registration Failed.", DomainName);
+            _pushNotificationListener.OnError(error.LocalizedDescription, Device.iOS);
+        }
+
+        public void OnRegisteredSuccess(NSData token)
+        {
+            Debug.WriteLine("{0} - Successfully Registered.", DomainName);
+            var trimmedDeviceToken = token.Description;
+            if(!string.IsNullOrWhiteSpace(trimmedDeviceToken))
+            {
+                trimmedDeviceToken = trimmedDeviceToken.Trim('<').Trim('>').Trim().Replace(" ", string.Empty);
+            }
+            Console.WriteLine("{0} - Token: {1}", DomainName, trimmedDeviceToken);
+            _pushNotificationListener.OnRegistered(trimmedDeviceToken, Device.iOS);
+            NSUserDefaults.StandardUserDefaults.SetString(trimmedDeviceToken, TokenSetting);
+            NSUserDefaults.StandardUserDefaults.Synchronize();
+        }
+
+        private static string DictionaryToJson(NSDictionary dictionary)
+        {
+            var json = NSJsonSerialization.Serialize(dictionary, NSJsonWritingOptions.PrettyPrinted, out NSError error);
+            return json.ToString(NSStringEncoding.UTF8);
+        }
+    }
+}

src/iOS/Services/iOSPushNotificationService.cs

@@ -0,0 +1,36 @@
+using System.Threading.Tasks;
+using Bit.App.Abstractions;
+using Foundation;
+using UIKit;
+
+namespace Bit.iOS.Services
+{
+    public class iOSPushNotificationService : IPushNotificationService
+    {
+        private const string TokenSetting = "token";
+
+        public Task<string> GetTokenAsync()
+        {
+            return Task.FromResult(NSUserDefaults.StandardUserDefaults.StringForKey(TokenSetting));
+        }
+
+        public Task RegisterAsync()
+        {
+            var userNotificationTypes = UIUserNotificationType.Alert | UIUserNotificationType.Badge |
+                UIUserNotificationType.Sound;
+            var settings = UIUserNotificationSettings.GetSettingsForTypes(userNotificationTypes, null);
+            UIApplication.SharedApplication.RegisterUserNotificationSettings(settings);
+            return Task.FromResult(0);
+        }
+
+        public Task UnregisterAsync()
+        {
+            UIApplication.SharedApplication.UnregisterForRemoteNotifications();
+            // TODO: unregister call
+            // _pushNotificationListener.OnUnregistered(Device.iOS);
+            NSUserDefaults.StandardUserDefaults.SetString(string.Empty, TokenSetting);
+            NSUserDefaults.StandardUserDefaults.Synchronize();
+            return Task.FromResult(0);
+        }
+    }
+}

src/iOS/iOS.csproj

@@ -94,6 +94,8 @@
     <Compile Include="AppDelegate.cs" />
     <Compile Include="Renderers\HybridWebViewRenderer.cs" />
     <Compile Include="Services\DeviceActionService.cs" />
+    <Compile Include="Services\iOSPushNotificationHandler.cs" />
+    <Compile Include="Services\iOSPushNotificationService.cs" />
     <None Include="Entitlements.plist" />
     <None Include="Info.plist" />
     <Compile Include="Properties\AssemblyInfo.cs" />