async Task <GangMemberConnectionState> IGangManager.ManageAsync(
GangParameters parameters, IGangMember member)
{
if (parameters is null)
{
throw new ArgumentNullException(nameof(parameters));
}
if (member is null)
{
throw new ArgumentNullException(nameof(member));
}
var audit = new GangAudit(parameters.GangId, null, member.Id, member.Session?.User.Id);
var auth = _serializer.Serialize(
new GangAuth(member.Id,
member.Session?.Token, _settings.Application)
);
if (member.Session == null)
{
await member.HandleAsync(GangMessageTypes.Denied, auth, audit);
await member.DisconnectAsync(RESULT_DENIED);
return(GangMemberConnectionState.Disconnected);
}
var gangId = parameters.GangId;
var gang = _gangs
.AddMemberToGang(parameters.GangId, member, _ => RaiseEvent(new GangAdded(), gangId));
if (gang.HostMember == member)
{
await member.HandleAsync(GangMessageTypes.Host, auth, audit);
}
else
{
await member.HandleAsync(GangMessageTypes.Member, auth, audit);
await gang.HostMember.HandleAsync(GangMessageTypes.Connect, null, audit);
}
RaiseEvent(new GangMemberAdded(), gangId, member.Id);
var controller = _controllerFactory.Create(
this, parameters.GangId, member,
async(data) =>
{
if (member == gang.HostMember)
{
throw new GangException("host member should not receive data");
}
var sequenceNumber = BitConverter.ToUInt32(data.AsSpan()[0..4]);
var audit = new GangAudit(parameters.GangId, sequenceNumber, member.Id, member.Session?.User.Id);
await gang.HostMember
.HandleAsync(GangMessageTypes.Command, data[4..], audit);
async Task <GangSession> IGangAuthenticationHandler
.HandleAsync(GangParameters parameters)
{
if (parameters is null)
{
throw new System.ArgumentNullException(nameof(parameters));
}
if (string.IsNullOrWhiteSpace(parameters.GangId) ||
string.IsNullOrWhiteSpace(parameters.Token))
{
return(default);
Task <GangSession> IGangAuthenticationHandler
.HandleAsync(GangParameters parameters)
{
var token = parameters.Token ?? $"{Guid.NewGuid():N}";
if (!_userIds.TryGetValue(token, out var userId))
{
userId = $"{Guid.NewGuid():N}";
_userIds = _userIds.Add(token, userId);
}
return(Task.FromResult(
new GangSession(userId, token: token)
));
}
