public void SaveUser(UserItem user)
{
if (user == null)
{
throw new ArgumentException("User can't be null");
}
if (user.KeyPair == null)
{
throw new ArgumentException("KeyPair can't be null");
}
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
if (db.Users.Count() == 1)
{
throw new Exception("User already exists");
}
db.Users.InsertOnSubmit(new UserModel()
{
Id = user.Id,
KeyPair = user.KeyPair,
Name = user.Name
});
db.SubmitChanges();
}
}
public IEnumerable <IContactModel> GetContacts()
{
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
return(db.Contacts.ToList());
}
}
public bool UserExists()
{
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
bool userExists = db.Users.Any();
return(userExists);
}
}
public void ClearMessages()
{
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
db.Messages.DeleteAllOnSubmit(db.Messages);
db.SubmitChanges();
}
}
public IEnumerable <Tuple <IContactModel, int> > GetContactsWithNewMessageCount()
{
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
return(db.Contacts.Select(
c =>
new Tuple <IContactModel, int>(c,
c.MessagesSentToUser.Count(mm => mm.IsNew) + c.MessagesSentByUser.Count(mm => mm.IsNew)))
.ToList());
}
}
public IUserModel GetUser()
{
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
UserModel user = db.Users.FirstOrDefault();
if (user == null)
{
throw new UserNotFoundException("User does not exist");
}
return(user);
}
}
public void SetUserName(string name)
{
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
UserModel user = db.Users.FirstOrDefault();
if (user == null)
{
throw new UserNotFoundException("User does not exist");
}
user.Name = name;
db.SubmitChanges();
}
}
public void MarkContactsAsNotNew(IEnumerable <int> contactsId)
{
if (contactsId == null)
{
return;
}
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
foreach (var contact in db.Contacts.Where(c => contactsId.Contains(c.Id)))
{
contact.IsNew = false;
}
db.SubmitChanges();
}
}
public void SaveMessages(IEnumerable <MessageItem> messages)
{
if (messages == null)
{
return;
}
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
db.Messages.InsertAllOnSubmit(messages.Select(m => new MessageModel()
{
SenderId = m.SenderId,
ReceiverId = m.ReceiverId,
IsNew = m.IsNew,
Body = m.Body,
Date = m.Date
}));
db.SubmitChanges();
}
}
public void SaveContacts(IEnumerable <ContactItem> contacts)
{
if (contacts == null)
{
return;
}
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
var filtered = contacts.Where(e => !db.Contacts.Any(c => c.Id == e.Id)).ToList();
db.Contacts.InsertAllOnSubmit(filtered.Select(c => new ContactModel()
{
Id = c.Id,
Name = c.Name,
PublicKey = c.PublicKey,
IsNew = c.IsNew,
MessagesSentByUser = new EntitySet <MessageModel>(),
MessagesSentToUser = new EntitySet <MessageModel>()
}));
db.SubmitChanges();
}
}
public IEnumerable <IMessageModel> GetMessages(int contactId)
{
using (QRyptoDb db = QryptoDbFactory.GetDb())
{
ContactModel contact = db.Contacts.FirstOrDefault(c => c.Id == contactId);
if (contact == null)
{
throw new ArgumentException("Contact does not exist");
}
List <MessageModel> messages = contact.MessagesSentByUser.ToList();
messages.AddRange(contact.MessagesSentToUser);
// mark messages as already seen
foreach (MessageModel msg in messages)
{
msg.IsNew = false;
}
db.SubmitChanges();
return(messages);
}
}