public IHttpActionResult PutHashTag([FromBody] HashTagDTO hashTag)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
int id = _hashTagService.PutHashTag(hashTag);
return(Ok(id));
}
public int PutHashTag(HashTagDTO hashTag)
{
if (hashTag == null)
{
throw new ServiceException(ExceptionType.NullException, "Hash tag is null");
}
int?hashTagId = _db.HashTagRepository.Get(hashTag.Id)?.Id
?? GetHashTagByName(hashTag.Name)?.Id;
return(hashTagId ?? AddHashTag(hashTag));
}
public int AddHashTag(HashTagDTO hashTag)
{
ValidateHashTag(hashTag);
if (GetHashTagByName(hashTag.Name) != null)
{
throw new ServiceException(ExceptionType.UniqueException, "Hash tag already exists!");
}
HashTag hashTagDAL = _db.HashTagRepository.Add(_mapper.Map <HashTag>(hashTag));
_db.Save();
return(hashTagDAL.Id);
}
private static IList <HashTagDTO> SplitHashtags(TweetDTO tweet)
{
IList <HashTagDTO> listOfHashTagsInMessage = new List <HashTagDTO>();
var regex = new Regex(@"(?<=#)\w+");
var hashTagsInMessage = regex.Matches(tweet.TweetContent);
foreach (Match m in hashTagsInMessage)
{
var newhashtag = new HashTagDTO
{
HashTagName = m.ToString(),
TweetId = tweet.TweetId,
};
listOfHashTagsInMessage.Add(newhashtag);
}
return(listOfHashTagsInMessage);
}
private void ValidateHashTag(HashTagDTO hashTag)
{
if (hashTag == null)
{
throw new ServiceException("Hash tag is null!")
{
Type = ExceptionType.NullException
}
}
;
if (!(hashTag.Name?.Trim().Length > 0))
{
throw new ServiceException("Hash tag name is empty")
{
Type = ExceptionType.EmptyStringException,
ExceptionValue = nameof(hashTag.Name)
}
}
;
}
}
}
