// Display notifications
public void DisplayMessageNotification(Conversation conversation, StudyBuddyShared.Entity.Message message, Dictionary <string, User> users)
{
//Check if running in foreground
if (!Xamarin.Forms.DependencyService.Get <IBackgroundChecker>().IsInBackground() && IsBlocked(conversation))
{
return;
}
if (!channelInitialized)
{
CreateNotificationChannel();
}
string title = users[message.Username].FirstName + " " + users[message.Username].LastName;
Intent intent = new Intent(Application.Context, typeof(SplashActivity));
intent.PutExtra("conversation", JObject.FromObject(conversation).ToString());
intent.PutExtra("users", JObject.FromObject(users).ToString());
intent.SetFlags(ActivityFlags.ReorderToFront);
PendingIntent pendingIntent = PendingIntent.GetActivity(Application.Context, conversation.Id, intent, PendingIntentFlags.UpdateCurrent);
//Build notification
NotificationCompat.Builder builder = new NotificationCompat.Builder(Application.Context, channelId)
.SetContentIntent(pendingIntent)
.SetContentTitle(title)
.SetContentText(message.Text)
.SetLargeIcon(BitmapFactory.DecodeResource(Application.Context.Resources, Resource.Mipmap.icon))
.SetSmallIcon(Resource.Drawable.icon_notification)
.SetAutoCancel(true)
.SetLights(NOTIFICATION_COLOR, 1000, 500)
.SetVisibility((int)NotificationVisibility.Public)
.SetDefaults((int)NotificationDefaults.Vibrate);
var notification = builder.Build();
manager.Notify(conversation.Id, notification);
}
public override StartCommandResult OnStartCommand(Intent intent, [GeneratedEnum] StartCommandFlags flags, int startId)
{
Device.BeginInvokeOnMainThread(() =>
{
DependencyService.Get <IToast>().ShortToast("starting service");
});
if (messageGetter != null)
{
return(StartCommandResult.Sticky);
}
if (App.Current.Properties.ContainsKey("notificationTimestamp"))
{
notificationTimestamp = (long)App.Current.Properties["notificationTimestamp"];
}
if (LocalUserManager.LocalUser == null)
{
if (Xamarin.Forms.Application.Current.Properties.ContainsKey("PrivateKey"))
{
LocalUserManager.LocalUser = new LocalUser {
PrivateKey = (string)Xamarin.Forms.Application.Current.Properties["PrivateKey"]
};
}
else
{
Device.BeginInvokeOnMainThread(() =>
{
DependencyService.Get <IToast>().ShortToast("no private key");
});
Stop();
}
}
Device.BeginInvokeOnMainThread(() =>
{
DependencyService.Get <IToast>().ShortToast("started service");
});
messageGetter = ConversationSystemManager.NewMessageGetter();
messageSender = ConversationSystemManager.NewMessageSender();
//Message getter result
messageGetter.Result += (status, conversations, messages, users) => {
Device.BeginInvokeOnMainThread(() =>
{
//DependencyService.Get<IToast>().ShortToast(status.ToString());
});
//Got messages
if (status == MessageGetAllStatus.Success && conversations.Count != 0)
{
//joining conversations
this.conversations = conversations
.Union(this.conversations, new EntityComparer())
.OrderByDescending(conv => conv.LastActivity)
.ToList();
//Joining messages
foreach (KeyValuePair <int, List <Message> > entry in messages)
{
if (this.messages.ContainsKey(entry.Key))
{
this.messages[entry.Key].AddRange(entry.Value);
}
else
{
this.messages[entry.Key] = entry.Value;
}
}
//Joining users
this.users = users
.Concat(this.users.Where(pair => !users.ContainsKey(pair.Key)))
.ToDictionary(x => x.Key, x => x.Value);
//Sending messages back to ui
Device.BeginInvokeOnMainThread(() =>
{
MessagingCenter.Send(new MessagingTask(messagesDict: messages, users: this.users), MessagingTask.NewMessages);
DependencyService.Get <IToast>().ShortToast("New message");
});
//Saving values
try
{
foreach (var entry in users)
{
if (db.Users.Any(user => user.Username == entry.Value.Username))
{
db.Users.Update(entry.Value);
}
else
{
db.Users.Add(entry.Value);
}
}
foreach (var entry in conversations)
{
if (db.Conversations.Any(conv => conv.Id == entry.Id))
{
db.Conversations.Update(entry);
}
else
{
db.Conversations.Add(entry);
}
}
foreach (var entry in messages)
{
foreach (var message in entry.Value)
{
if (db.Messages.Any(_message => _message.Id == message.Id))
{
db.Messages.Update(message);
}
else
{
db.Messages.Add(message);
}
}
}
db.SaveChanges();
//Untracking values
foreach (var entry in users)
{
db.Entry(entry.Value).State = EntityState.Detached;
}
foreach (var entry in conversations)
{
db.Entry(entry).State = EntityState.Detached;
}
foreach (var entry in messages)
{
foreach (var message in entry.Value)
{
db.Entry(message).State = EntityState.Detached;
}
}
}
catch (SqliteException e)
{
Console.WriteLine("Table not found, the user might have logged off mid writing");
}
//Creating notifications
long temp = notificationTimestamp;
conversations.ForEach((conversation) =>
{
Message message = messages[conversation.Id].FindLast(m => users.ContainsKey(m.Username) && m.Timestamp > notificationTimestamp);
if (message != null)
{
if (notificationTimestamp != -1)
{
Device.BeginInvokeOnMainThread(() =>
{
DependencyService.Get <INotification>().DisplayMessageNotification(conversation, message, users);
});
}
temp = Math.Max(message.Timestamp, temp);
}
});
//New notification timestamp limit
if (temp != notificationTimestamp)
{
notificationTimestamp = temp;
App.Current.Properties["notificationTimestamp"] = notificationTimestamp;
App.Current.SavePropertiesAsync();
}
}
//Failed to get stopping service
else if (status == MessageGetAllStatus.InvalidPrivateKey)
{
if (LocalUserManager.LocalUser != null)
{
messageGetter.PrivateKey = LocalUserManager.LocalUser.PrivateKey;
}
else
{
messageGetter.Result = null;
messageGetter.StopGetting();
messageSender.Result = null;
messageSender.StopSending();
Stop();
}
}
};
//Get all messages request
MessagingCenter.Subscribe <MessagingTask>(this, MessagingTask.GetMessages, (task) =>
{
MessagingCenter.Send(new MessagingTask(messagesDict: messages, users: users), MessagingTask.LocalMessages);
});
//Get specfic amoount of messages
MessagingCenter.Subscribe <MessagingTask>(this, MessagingTask.GetMessagesLimited, (task) =>
{
List <Message> messagesList = null;
if (messages.ContainsKey(task.Conversation.Id))
{
int toRemove = (task.Message == null ? 0 : messages[task.Conversation.Id].Count - messages[task.Conversation.Id].FindIndex((m) => task.Message.Id == m.Id));
messagesList = messages[task.Conversation.Id].AsEnumerable().Reverse().Skip(toRemove).Take(task.GetCount).Reverse().ToList();
}
else
{
messagesList = new List <Message>();
}
MessagingCenter.Send(new MessagingTask(messages: messagesList, users: users, conversation: task.Conversation), MessagingTask.LocalMessagesLimited);
});
// Get all conversations
MessagingCenter.Subscribe <MessagingTask>(this, MessagingTask.GetConversations, (task) =>
{
MessagingCenter.Send(new MessagingTask(conversations: conversations, users: users), MessagingTask.LocalConversations);
});
//Sender result
messageSender.Result += (status, message) =>
{
//If failed stop
if (status == MessageSendStatus.InvalidPrivateKey)
{
if (LocalUserManager.LocalUser != null)
{
messageGetter.PrivateKey = LocalUserManager.LocalUser.PrivateKey;
}
else
{
messageGetter.Result = null;
messageGetter.StopGetting();
messageSender.Result = null;
messageSender.StopSending();
}
}
};
//Enqueue message to sender
MessagingCenter.Subscribe <MessagingTask>(this, MessagingTask.AddMessageToQueue, (task) =>
{
messageSender.AddMessageToQueue(task.Message);
});
//Stop the service
MessagingCenter.Subscribe <MessagingTask>(this, MessagingTask.Stop, (task) =>
{
Device.BeginInvokeOnMainThread(() =>
{
messageGetter.Result = null;
messageGetter.StopGetting();
messageSender.Result = null;
messageSender.StopSending();
Stop();
});
});
new Thread(() =>
{
var temp = users.ToDictionary(entry => entry.Key,
entry => entry.Value);
LoadData();
Device.BeginInvokeOnMainThread(() =>
{
MessagingCenter.Send(new MessagingTask(messagesDict: messages, users: users), MessagingTask.NewMessages);
});
foreach (var entry in temp)
{
var getter = UserSystemManager.UserGetter();
if (getter != null)
{
getter.Result += (status, user) =>
{
if (status == UserGetStatus.Success)
{
users[user.Username] = user;
}
};
getter.Get(entry.Value.Username);
}
}
conversations.ForEach(conv =>
{
messageGetter.TimeStamp = Math.Max(conv.LastActivity, messageGetter.TimeStamp);
});
messageGetter.GetUsers = true;
if (!stoppedSelf)
{
messageGetter.StartGetting();
messageSender.StartSending();
}
Device.BeginInvokeOnMainThread(() =>
{
MessagingCenter.Send(new MessagingTask(), MessagingTask.Started);
});
Console.WriteLine("SERVICE STARTED");
}).Start();
; return(StartCommandResult.Sticky);
}
