private void BtnRegister_Click(object sender, RoutedEventArgs e)
{
if (string.IsNullOrEmpty(tbUserName.Text) || string.IsNullOrEmpty(tbPassword.Password))
{
MessageBox.Show("Login lub hasło nie mogą być puste!", "Ostrzeżenie", MessageBoxButton.OK, MessageBoxImage.Warning);
tbUserName.BorderBrush = Brushes.Red;
tbUserName.Background = Brushes.MistyRose;
tbPassword.Clear();
tbPassword.BorderBrush = Brushes.Red;
tbPassword.Background = Brushes.MistyRose;
return;
}
bool userExist = false;
foreach (var p in credentials.Chain)
{
if (p.DataCredentials.Login == tbUserName.Text)
{
userExist = true;
break;
}
}
if (userExist == false)
{
counter = 0;
acceptedRequest = 0;
acceptedAccount = false;
MessagePack mp = new MessagePack();
BlockchainCredentials bc = new BlockchainCredentials();
bc.Login = tbUserName.Text;
bc.Password = ComputeSha256Hash(tbPassword.Password);
MessageBoxResult boxResult = MessageBox.Show("Czy chcesz pełnić rolę producenta?", "Wybór roli", MessageBoxButton.YesNoCancel, MessageBoxImage.Question);
if (boxResult == MessageBoxResult.Yes)
{
bc.UserType = true;
}
else if (boxResult == MessageBoxResult.No)
{
bc.UserType = false;
}
else
{
return;
}
mp.SmObj = new Block(DateTime.Now, null, bc);
mp.Text = "createNewUserRequest";
byte[] data = Blockchain.ObjectToByteArray(mp);
sendingClient.Send(data, data.Length);
MessageBox.Show("Prośba o dołączenie do systemu została wysłana do innych użytkowników. Zaczekaj, aż inni użytkownicy zaakceptują Twoją prośbę!", "Informacja", MessageBoxButton.OK, MessageBoxImage.Information);
tbUserName.BorderBrush = Brushes.Gray;
tbUserName.Background = Brushes.White;
tbPassword.BorderBrush = Brushes.Gray;
tbPassword.Background = Brushes.White;
}
else
{
MessageBox.Show("Użytkownik o podanym loginie istnieje już w systemie!", "Ostrzeżenie", MessageBoxButton.OK, MessageBoxImage.Warning);
tbUserName.BorderBrush = Brushes.Red;
tbUserName.Background = Brushes.MistyRose;
tbPassword.Clear();
tbPassword.BorderBrush = Brushes.Red;
tbPassword.Background = Brushes.MistyRose;
return;
}
}
private void MessageReceived(byte[] message)
{
MessagePack mp = (Blockchain.ByteArrayToObject(message)) as MessagePack;
switch (mp.Text)
{
//SYNCHRONIZACJA DANYCH LOGOWANIA
case "credentialsRequest":
if (mp.Sender != userName)
{
string hash = credentials.Chain[credentials.Chain.Count() - 1].Hash;
if (hash != mp.Hash)
{
List <Block> newBlocks = new List <Block>();
foreach (Block el in credentials.Chain)
{
newBlocks.Add(el);
}
mp.listOfBlocks = newBlocks;
}
else
{
mp.listOfBlocks = null;
}
mp.Text = "userCredentialsData";
mp.Receiver = mp.Sender;
mp.Sender = userName;
byte[] data = Blockchain.ObjectToByteArray(mp);
sendingClient.Send(data, data.Length);
}
break;
//SYNCHRONIZACJA DANYCH DOTYCZĄCYCH ZASOBÓW
case "requestUpdate":
if (mp.Sender != userName)
{
mp.Text = "peerReady";
mp.Receiver = mp.Sender;
mp.Sender = userName;
mp.Hash = chain.Chain[chain.Chain.Count() - 1].Hash;
byte[] data = Blockchain.ObjectToByteArray(mp);
sendingClient.Send(data, data.Length);
}
break;
case "peerReady":
peerNames.Add(mp.Sender);
if (mp.Sender != userName && mp.Receiver == userName && peerNames[0] == mp.Sender)
{
int length = chain.Chain.Count();
string hash = chain.Chain[chain.Chain.Count() - 1].Hash;
if (hash != mp.Hash && length != 1)
{
mp.Text = "chainRequest";
mp.Receiver = mp.Sender;
mp.Sender = userName;
mp.Hash = hash;
byte[] data = Blockchain.ObjectToByteArray(mp);
sendingClient.Send(data, data.Length);
}
else if (hash == mp.Hash)
{
if (chain.IsValid() == false || chain.Chain.Count() == 0)
{
chain = new Blockchain();
chain.AddGenesisBlock();
mp.Text = "requestUpdate";
mp.Sender = userName;
mp.Receiver = userName;
mp.Hash = chain.Chain[chain.Chain.Count() - 1].Hash;
byte[] data = Blockchain.ObjectToByteArray(mp);
sendingClient.Send(data, data.Length);
}
else
{
MessageBox.Show("Synchronizacja zakończona pomyślnie. Posiadasz aktualną kopię blockchaina!", "Informacja", MessageBoxButton.OK, MessageBoxImage.Information);
}
}
else
{
chain = new Blockchain();
mp.Text = "chainRequest";
mp.Receiver = mp.Sender;
mp.Sender = userName;
mp.Hash = hash;
byte[] data = Blockchain.ObjectToByteArray(mp);
sendingClient.Send(data, data.Length);
}
}
break;
case "chainRequest":
if (mp.Sender != userName && mp.Receiver == userName)
{
List <Block> newBlocks = new List <Block>();
if (chain.Chain.Find(i => i.Hash == mp.Hash) != null)
{
Block lastBlock = chain.Chain.Find(i => i.Hash == mp.Hash);
int startIndex = lastBlock.Index + 1;
int finishIndex = lastBlock.Index + 10;
int lastIndex = chain.Chain[chain.Chain.Count() - 1].Index;
if ((lastIndex - lastBlock.Index) < 10)
{
finishIndex = lastIndex;
}
for (int i = startIndex; i <= finishIndex; i++)
{
newBlocks.Add(chain.Chain[i]);
}
}
else
{
int lastIndex = chain.Chain[chain.Chain.Count() - 1].Index;
int finishIndex = (lastIndex < 9) ? lastIndex : 9;
for (int i = 0; i <= finishIndex; i++)
{
newBlocks.Add(chain.Chain[i]);
}
}
mp.listOfBlocks = newBlocks;
mp.Text = "newBlockchain";
mp.Receiver = mp.Sender;
mp.Sender = userName;
byte[] data = Blockchain.ObjectToByteArray(mp);
sendingClient.Send(data, data.Length);
}
break;
case "newBlockchain":
if (mp.Sender != userName && mp.Receiver == userName)
{
foreach (Block el in mp.listOfBlocks)
{
chain.Chain.Add(el);
}
mp.Text = "requestUpdate";
mp.Sender = userName;
mp.Receiver = userName;
mp.Hash = chain.Chain[chain.Chain.Count() - 1].Hash;
byte[] data = Blockchain.ObjectToByteArray(mp);
sendingClient.Send(data, data.Length);
Blockchain.SerializeToJson(chain);
peerNames.Clear();
// Załadowanie danych do listview
for (int i = 0; i < chain.Chain.Count(); i++)
{
chain.Chain[i].Data.WartoscZamortyzowana = CountCurrentDepreciationValue(chain.Chain[i]);
}
var temp = from p in chain.Chain
select p;
lstProducts.ItemsSource = temp.GroupBy(x => x.Data.NumerInwentaryzacyjny).Select(y => y.Last());
CollectionView view = (CollectionView)CollectionViewSource.GetDefaultView(lstProducts.ItemsSource);
view.Filter = UserFilter;
}
break;
//DODAWANIE NOWEGO UŻYTKOWNIKA DO SYSTEMU
case "createNewUserRequest":
MessageBoxResult decision = MessageBox.Show("Czy zgadzasz się na dodanie użytkownika o loginie '" + mp.SmObj.DataCredentials.Login.ToString() + "' do systemu",
"Akceptacja nowego użytkownika", MessageBoxButton.YesNo, MessageBoxImage.Question);
if (decision != MessageBoxResult.Yes)
{
mp.SmObj = null;
}
mp.Text = "createNewUserDecision";
byte[] accountData = Blockchain.ObjectToByteArray(mp);
sendingClient.Send(accountData, accountData.Length);
break;
case "createNewUserAccepted":
credentials.AddBlock(mp.SmObj);
Blockchain.SerializeToJsonCredentials(credentials);
break;
//DODAWANIE NOWEGO ZASOBU DO SYSTEMU
case "newBlock":
chain.AddBlock(mp.SmObj);
chain.Chain[chain.Chain.Count() - 1].Data.WartoscZamortyzowana = CountCurrentDepreciationValue(chain.Chain[chain.Chain.Count() - 1]);
CollectionViewSource.GetDefaultView(lstProducts.ItemsSource).Refresh();
MessageBox.Show("Nowy rekord został dodany do systemu!", "Informacja", MessageBoxButton.OK, MessageBoxImage.Information);
Blockchain.SerializeToJson(chain);
break;
}
}