public ActionResult NewAnswer(AnswerModel answerModel)
{
if (!ModelState.IsValid)
{
ModelState.AddModelError("", "Enter a valid answer.");
return View("AnswerBox", answerModel);
}
var question =
MongoHelper.GetCollection<Question>("questions").AsQueryable().FirstOrDefault(
q => q.QuestionId == new ObjectId(answerModel.QuestionId));
//if the question id was tampered with
if (question == null)
{
ModelState.AddModelError("", "Invalid question id");
return View("AnswerBox", answerModel);
}
var user =
MongoHelper.GetCollection<User>("users").AsQueryable().First(
u => u.UserName == HttpContext.User.Identity.Name);
Answer newAnswer = new Answer();
newAnswer.Body = answerModel.Answer;
newAnswer.UserId = user.UserId;
newAnswer.DateAnswered = DateTime.Now.ToShortDateString();
newAnswer.QuestionId = question.QuestionId;
var saveResult = MongoHelper.GetCollection<Question>("answers").Save(newAnswer);
if(!saveResult.Ok)
{
ModelState.AddModelError("",saveResult.ErrorMessage);
return View("AnswerBox", answerModel.QuestionId);
}
GlobalHost.ConnectionManager.GetHubContext<AnswerHub>().Clients.All.showAnswer(new AnswerViewModel
{
Answer = newAnswer,
Answerer = user,
VoteViewModel =new VoteViewModel()
});
return RedirectToAction("AnswerBox", new {questionid = answerModel.QuestionId});
}
/// <summary>
/// Check if a user is making a new vote
/// </summary>
/// <param name="answer"></param>
/// <param name="voteviewModel"></param>
/// <param name="isUpVote"></param>
private void NewAnswerVoteByUser(Answer answer, VoteViewModel voteviewModel, bool isUpVote)
{
UserVote userVote = new UserVote();
userVote.User =
MongoHelper.GetCollection<User>("users").AsQueryable().FirstOrDefault(
u => u.UserName == HttpContext.Current.User.Identity.Name);
userVote.Upvote += (isUpVote) ? AnswerUpvote : AnswerDownVote;
answer.Vote.UserVotes.Add(userVote);
if (isUpVote)
{
userVote.SelectedUpVotePath = voteviewModel.SelectedUpVotePath = voteviewModel.UpVotePath;
Clients.Caller.updateAnswerUpVoteImage(answer.AnswerId.ToString(),voteviewModel.SelectedUpVotePath);
}
else
{
userVote.SelectedDownVotePath = voteviewModel.SelectedDownVotePath = voteviewModel.DownVotePath;
Clients.Caller.updateAnswerDownVoteImage(answer.AnswerId.ToString(),voteviewModel.SelectedDownVotePath);
}
}
/// <summary>
/// User is making a change to an existing vote
/// </summary>
/// <param name="answer"></param>
/// <param name="voteviewModel"></param>
/// <param name="userVote"></param>
/// <param name="isUpVote"></param>
private void ReestablishUserVoteChanges(Answer answer, VoteViewModel voteviewModel, UserVote userVote,
bool isUpVote)
{
if (isUpVote)
{
userVote.SelectedDownVotePath = "";
if (userVote.Upvote == AnswerUpvote)
{
Clients.Caller.updateAnswerUpVoteImage(answer.AnswerId.ToString(),voteviewModel.NoUpVotePath);
userVote.SelectedUpVotePath = "";
userVote.Upvote = 0;
answer.Vote.UserVotes.Remove(userVote);
}
else
{
Clients.Caller.updateAnswerUpVoteImage(answer.AnswerId.ToString(),voteviewModel.UpVotePath);
userVote.SelectedUpVotePath = voteviewModel.UpVotePath;
userVote.Upvote = AnswerUpvote;
}
}
else
{
userVote.SelectedUpVotePath = "";
if (userVote.Upvote == AnswerDownVote)
{
Clients.Caller.updateAnswerDownVoteImage(answer.AnswerId.ToString(),voteviewModel.NoDownVotePath);
userVote.SelectedDownVotePath = "";
userVote.Upvote = 0;
answer.Vote.UserVotes.Remove(userVote);
}
else
{
Clients.Caller.updateAnswerDownVoteImage(answer.AnswerId.ToString(),voteviewModel.DownVotePath);
userVote.SelectedDownVotePath = voteviewModel.DownVotePath;
userVote.Upvote = AnswerDownVote;
}
}
}
/// <summary>
/// Publishes a new answer to the client
/// </summary>
/// <param name="answer"></param>
public void ShowAnswer(Answer answer)
{
Clients.Caller.showAnswer(answer.ToJson());
}