private async void ReadLatestMessagesAndFillChat()
{
List <Message> latestMessages = await App.AppDataBase.GetLatestMessagges();
foreach (Message m in latestMessages)
{
string currrentUser = App.Instance.PhoneNumber;
if (m.Receiver.Equals(currrentUser) || m.Sender.Equals(currrentUser))
{
string contactNumber = m.Receiver.Equals(App.Instance.PhoneNumber) ? m.Sender : m.Receiver;
if (ContactList.Any(c => c.PhoneNumber.Equals(contactNumber)))
{
continue;
}
IEnumerable <PhoneContact> l = App.Instance.Contacts.Where(c => c.PhoneNumber.Equals(contactNumber));
PhoneContact contact = l?.Count() > 0 ? l.First() : null;
if (contact != null)
{
PhoneContactWrapper pe = new PhoneContactWrapper(contact)
{
HasUnreadMessages = m.Status == MessageStatus.NotRead
};
ContactList.Add(pe);
}
else
{
PhoneContactWrapper pe = new PhoneContactWrapper()
{
PhoneNumber = contactNumber,
FirstName = contactNumber,
HasUnreadMessages = m.Status == MessageStatus.NotRead
};
ContactList.Add(pe);
}
}
}
SearchContactList = ContactList;
IsBusy = false;
ElementsVisible = true;
}
private void ManageMessagingCenter()
{
MessagingCenter.Subscribe <App>(this, "resourcesInitialized", (app) =>
{
ReadLatestMessagesAndFillChat();
});
MessagingCenter.Subscribe <App, Message>(this, "newMessageReceived", (app, message) =>
{
var temporary = ContactList.Where(pc => pc.PhoneNumber.Equals(message.Sender));
if (temporary != null && temporary.Count() > 0)
{
PhoneContactWrapper pc = temporary.First();
pc.HasUnreadMessages = true;
ContactList.Remove(pc);
ContactList.Insert(0, pc);
}
else
{
var temp = App.Instance.Contacts.Where(pc => pc.PhoneNumber.Equals(message.Sender));
if (temp != null && temp.Count() > 0)
{
PhoneContactWrapper pce = new PhoneContactWrapper(temp.First())
{
HasUnreadMessages = true
};
ContactList.Insert(0, pce);
}
else
{
// this number is not in the contactlist
PhoneContactWrapper pce = new PhoneContactWrapper()
{
FirstName = message.Sender,
PhoneNumber = message.Sender,
HasUnreadMessages = true,
};
ContactList.Insert(0, pce);
}
}
});
MessagingCenter.Subscribe <MessagingViewModel, PhoneContact>(this, "messagesRead", (mvm, contact) =>
{
var temp = ContactList.Where(pc => pc.Equals(contact));
if (temp != null && temp.Count() > 0)
{
PhoneContactWrapper pce = temp.First();
pce.HasUnreadMessages = false;
}
});
MessagingCenter.Subscribe <MessagingViewModel, PhoneContact>(this, "newMessageSent", (mvm, contact) =>
{
var temp = ContactList.Where(pc => pc.Equals(contact));
if (temp != null && temp.Count() > 0)
{
PhoneContactWrapper pce = temp.First();
pce.HasUnreadMessages = false;
ContactList.Remove(pce);
ContactList.Insert(0, pce);
}
else
{
PhoneContactWrapper pce = new PhoneContactWrapper(contact)
{
HasUnreadMessages = false
};
ContactList.Insert(0, pce);
}
});
}