public Friend ChangeFriendStatus(int userId, FriendStatus status)
{
// TODO: Write code to test all the new functions in UsersManager and FriendsRepository
return(Operation(() =>
{
CheckIsUserAuthenticated();
CheckDoesUserExist(userId);
if (!serverManager.DoesFriendExist(LoggedUser.Id, userId))
{
throw new Exception("No such friendship exists");
}
var friend = serverManager.GetExistingFriend(LoggedUser.Id, userId);
if (!friend.IsChangePossible(status, LoggedUser.Id))
{
throw new Exception("Friend status change is not possible");
}
// Updating the database with the changed status
serverManager.ChangeFriendStatus(friend, status);
// Notifying the other user the friend status has changed
var friendUserId = friend.UserId1 != LoggedUser.Id ? friend.UserId1 : friend.UserId2;
NotifyUserFriendStatusChanged(friendUserId, friend, LoggedUser);
return friend;
}));
}