/* methods */
public MessageService()
{
using (var db = new MessagesContext())
{
Contacts = new ObservableCollection <Contact>(db.Contacts);
Messages = new ObservableCollection <Message>(db.Messages.Include("Recipients"));
}
Recipients = new ObservableCollection <Contact>();
}
public void DeleteMessage(Message message)
{
var found = Messages.SingleOrDefault(m => m.Id.Equals(message.Id));
if (found == null)
{
throw new ItemNotFoundException("Message was not found in the database");
}
using (var db = new MessagesContext())
{
db.Messages.Attach(found);
db.Messages.Remove(found);
db.SaveChanges();
Messages.Remove(found);
}
}
public void AddContact(Contact contact)
{
if (String.IsNullOrEmpty(contact.Email) || String.IsNullOrEmpty(contact.FirstName) || String.IsNullOrEmpty(contact.LastName))
{
throw new FormatException("Please fill all the fields properly");
}
var result = Contacts.SingleOrDefault(c => c.Email.ToLower().Equals(contact.Email.ToLower()));
if (result != null)
{
throw new ItemAllreadyExistsException($"Contact with Email '{result.Email}' allready exists");
}
using (var db = new MessagesContext())
{
var con = db.Contacts.Add(contact);
db.SaveChanges();
Contacts.Add(con);
}
}
public void SendMessage()
{
if (NewMessage.Recipients.Count == 0)
{
throw new EmptyFieldException("You forgot to add recipients to your message");
}
using (var db = new MessagesContext())
{
var mes = db.Messages.Add(NewMessage);
foreach (var contact in NewMessage.Recipients)
{
db.Contacts.Attach(contact);
contact.Inbox.Add(mes);
}
db.SaveChanges();
Messages.Add(mes);
}
NewMessage = new Message();
Recipients.Clear();
}