public async Task <AddedAnswerDto> AddAnswer(AnswerDto answer)
{
var answerObject = new Answer();
answerObject.FromDto(answer);
// Repository might get a different object back.
// We will also let repository do the counting. Repository increases the count.
var persistResult = await PersistAnswer(answerObject);
// Add to cache.
var cachedData = GetCachedData();
cachedData.Insert(persistResult.Answer);
// Add to left cache
var leftCachedData = GetLeftCachedData();
leftCachedData.Insert(new AnswerLeftMask(persistResult.Answer));
// Add to right cache
var rightCachedData = GetRightCachedData();
rightCachedData.Insert(new AnswerRightMask(persistResult.Answer));
// Add to "answer by user" cache if there is a user
if (persistResult.Answer.UserId != null)
{
var userCachedData = GetUserCachedData();
userCachedData.Insert(new AnswerUserMask(persistResult.Answer));
}
// Add to trending today
AddToTrendingToday(persistResult.Answer);
// Add to thrending overall
AddToTrendingOverall(persistResult.Answer);
var result = new AddedAnswerDto()
{
Answer = persistResult.Answer.ToDto()
};
// Make sure we let the caller know that data is new.
// We can not update user statistics here.
result.IsNew = persistResult.IsNew;
return(result);
}
/// <summary>
/// Check answer data received from user for profanity.
/// Set the error message in the answer object if anything found.
/// </summary>
/// <param name="service"></param>
/// <param name="answer"></param>
/// <returns>true if profanity found</returns>
private bool CheckProfanity(IProfanityService service, AddedAnswerDto answer)
{
var profanityCheckResult = service.CheckProfanity(answer.Answer.LeftWord);
if (profanityCheckResult.HasIssues)
{
answer.ErrorMessage = profanityCheckResult.ErrorMessage;
return(true);
}
profanityCheckResult = service.CheckProfanity(answer.Answer.RightWord);
if (profanityCheckResult.HasIssues)
{
answer.ErrorMessage = profanityCheckResult.ErrorMessage;
return(true);
}
profanityCheckResult = service.CheckProfanity(answer.Answer.Phrase);
if (profanityCheckResult.HasIssues)
{
answer.ErrorMessage = profanityCheckResult.ErrorMessage;
return(true);
}
return(false);
}
public async Task <AddedAnswerDto> AddAnswer(AnswerDto answer)
{
var result = new AddedAnswerDto()
{
Answer = answer
};
// Basic checks first
if (result.Answer == null)
{
return(SetErrorMessage(result, "Incoming data is null."));
}
// This might throw exception if there was a header but invalid. But if someone is just messing with us we will return nothing.
if (!ParseAntiForgeryHeader(_antiforgery, result, HttpContext))
{
return(result);
}
// Let's first check for profanities.
bool gotProfanityIssues = CheckProfanity(_profanityService, result);
if (gotProfanityIssues)
{
return(result);
}
// Add left word and right word to suggestions
var addedSuggestion = _suggestionService.AddSuggestion(new SuggestionDto()
{
Phrase = answer.LeftWord
});
// Add the right word if different from left
if (answer.LeftWord != answer.RightWord)
{
addedSuggestion = _suggestionService.AddSuggestion(new SuggestionDto()
{
Phrase = answer.RightWord
});
}
// Save the user in case we need statistics update
ApplicationUserDto user = null;
// Load user if he is logged in
if (User.Identity.IsAuthenticated && User.Identity.Name != null)
{
user = _userService.FindByUserName(User.Identity.Name);
}
// Set the user id in the answer if user is found
if (user != null)
{
answer.UserId = user.UserId;
// Check if user statistics is loaded
_statisticsService.LoadUserStatictics(user);
}
// Add answer. This will not touch user's cache or user service.
result = await _answerService.AddAnswer(answer);
// Need to update user stats if new answer was added
if (result.IsNew && user != null)
{
user.NumberOfAnswers++;
result.UserLevelingResult = _userService.LevelUser(user, EventType.AnswerAdded);
}
return(result);
}
private AddedAnswerDto SetErrorMessage(AddedAnswerDto answer, string errorMessage)
{
answer.ErrorMessage = errorMessage;
return(answer);
}
