/// <summary>
/// \brief Create a new instance of CallConnection.
///
/// When the instance is created, the database will be updated accordingly.
/// </summary>
/// <param name="_client1">An object of the ClientMessageSocket class.</param>
/// <param name="_client2">An object of the ClientMessageSocket class.</param>
public CallConnection(ClientMessageSocket _client1, ClientMessageSocket _client2)
{
client1 = _client1;
client2 = _client2;
client1.isCalling = true;
client2.isCalling = true;
SendStartMessages();
SetThreads();
}
/// <summary>
/// Remove a ClientMessageSocket from the pendingRandomCallConnections list.
/// </summary>
/// <param name="client">The ClientMessageSocket to remove</param>
public static void RemovePendingRandomCallConnection(ClientMessageSocket client)
{
// Ensure that the client is in the pendingRandomCallConnections list.
if (pendingRandomCallConnections.Contains(client))
{
pendingRandomCallConnections.Remove(client);
mainWindow.SetNumberOfPendingCalls(pendingRandomCallConnections.Count());
}
}
/// <summary>
/// Add a ClientMessageSocket instance that has send a random connection request to the pendingRandomCallConnections.
/// The instance will only be added if it does not exist in the pendingRandomCallConnections list.
/// </summary>
/// <param name="client">A ClientMessageSocket instance</param>
public static void AddPendingRandomCallClient(ClientMessageSocket client)
{
// Only add if the pendingRandomCallConnections does not contain the client already.
if (!pendingRandomCallConnections.Contains(client))
{
pendingRandomCallConnections.Add(client);
// Update the MainWindow.
mainWindow.SetNumberOfPendingCalls(pendingRandomCallConnections.Count());
}
}
/// <summary>
/// Get a pending ClientMessageSocket instance that has requested a random call connection.
/// If the pendingRandomCallConnections list is empty, null is returned.
/// When a ClientMessageSocket instance is found, it is removed from the pendingRandomCallConnections list.
/// </summary>
/// <returns>A ClientMessageSocket instance or null</returns>
public static ClientMessageSocket GetRandomPendingConnection()
{
if (pendingRandomCallConnections.Any())
{
// Get the first pending ClientMessageSocket instance in the list.
ClientMessageSocket clientMessageSocket = pendingRandomCallConnections.First();
// Remove the ClientMessageSocket instance from pendingRandomCallConnections.
RemovePendingRandomCallConnection(clientMessageSocket);
// Update the MainWindow.
mainWindow.SetNumberOfPendingCalls(pendingRandomCallConnections.Count());
return(clientMessageSocket);
}
else
{
// If the pendingRandomCallConnections list is empty, return null.
return(null);
}
}
/// <summary>
/// Removes a ClientMessageSocket instance from the connectedSockets list.
/// If the ClientMessageSocket instance is used in a CallConnection instance, this instance is removed too.
/// The mainWindow is also updated.
/// </summary>
/// <param name="client">The ClientMessageSocket instance to remove.</param>
public static void RemoveClientFromConnectedSockets(ClientMessageSocket client)
{
if (connectedSockets.Contains(client))
{
// Close the connection
client.GetInnerClient().Close();
// Remove the ClientMessageSocket instance from connectedSockets.
connectedSockets.Remove(client);
// Find a CallConnection with the client.
var callConnection = GetCallConnectionWithCient(client);
// If a CallConnection is found, remove the CallConnection.
if (callConnection != null)
{
RemoveCallConnection(callConnection);
}
// Update MainWindow.
mainWindow.SetNumberOfConnectedClients(connectedSockets.Count());
// Remove the client from the pendingRandomCallConnections list.
RemovePendingRandomCallConnection(client);
}
}
/// <summary>
/// Find a CallConnection instance that uses the given client.
/// If it does not exist, null will be return.
/// </summary>
/// <param name="client">The ClientMessageSocket instance to find.</param>
/// <returns>The CallConnection instance or null.</returns>
private static CallConnection GetCallConnectionWithCient(ClientMessageSocket client)
{
return(callConnections.Where(x => x.GetClient1().Equals(client) || x.GetClient2().Equals(client)).FirstOrDefault());
}
