public IHttpActionResult Post(string userId, string otherUserId)
{
var user = UserCache.Find(userId);
if (user == null)
{
int userInt;
if (int.TryParse(userId, out userInt))
{
user = UserRepository.ReadUser(userInt);
if (user != null)
{
var otherUser = UserCache.Find(otherUserId);
if (otherUser == null)
{
int otherUserInt;
if (int.TryParse(otherUserId, out otherUserInt))
{
otherUser = UserRepository.ReadUser(otherUserInt);
if (otherUser != null)
{
user.Connect(otherUser);
UserRepository.Update(user);
return(Ok(otherUser));
}
}
}
else
{
user.Connect(otherUser);
UserRepository.Update(user);
return(Ok(otherUser));
}
}
else
{
return(BadRequest("User not found."));
}
}
else
{
return(BadRequest("Invalid user ID."));
}
}
else
{
var otherUser = UserCache.Find(otherUserId);
if (otherUser == null)
{
int otherUserInt;
if (int.TryParse(otherUserId, out otherUserInt))
{
otherUser = UserRepository.ReadUser(otherUserInt);
if (otherUser != null)
{
user.Connect(otherUser);
UserRepository.Update(user);
return(Ok(otherUser));
}
else
{
return(BadRequest("Other user not found."));
}
}
else
{
return(BadRequest("Invalid user ID for other user."));
}
}
}
// Famous last words:
throw new InvalidOperationException("This can't possibly happen!");
}