public HttpResponseMessage PostAPost(
[FromBody]PostModel model,
[ValueProvider(typeof(HeaderValueProviderFactory<string>))] string sessionKey)
{
var responseMsg = this.PerformOperationAndHandleExceptions(() =>
{
ValidateText(model.Text);
ValidateTitle(model.Title);
var context = new BloggingSystemContext();
using (context)
{
var user = GetValidUser(sessionKey);
if (user == null)
{
throw new InvalidOperationException("You are not logged in!");
}
var post = new Post()
{
Title = model.Title,
Text = model.Text,
PostDate = DateTime.Now,
User = user
};
HashSet<string> allTags = new HashSet<string>();
foreach (var tag in model.Tags)
{
var lowerTag = tag.ToLower();
if (!allTags.Contains(lowerTag))
{
allTags.Add(lowerTag);
}
}
string[] splitedTitle = model.Title.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
foreach (var tag in splitedTitle)
{
var lowerTag = tag.ToLower();
if (!allTags.Contains(lowerTag))
{
allTags.Add(lowerTag);
}
}
foreach (var tag in allTags)
{
var newTag = context.Tags.Where(t => t.Title == tag).FirstOrDefault();
if (newTag == null)
{
newTag = new Tag()
{
Title = tag
};
}
post.Tags.Add(newTag);
}
context.Posts.Add(post);
context.SaveChanges();
PostResponseModel responseModel = new PostResponseModel()
{
Id = post.Id,
Title = post.Title
};
return Request.CreateResponse(HttpStatusCode.Created, responseModel);
}
});
return responseMsg;
}
public HttpResponseMessage Post(PostModel model, string sessionKey)
{
try
{
this.VerifySessionKey(sessionKey);
if (string.IsNullOrEmpty(model.Title))
{
throw new ArgumentNullException("Post title is mandatory");
}
if (string.IsNullOrEmpty(model.Text))
{
throw new ArgumentNullException("Post content is mandatory");
}
}
catch (Exception e)
{
var errorResponse = this.Request.CreateErrorResponse(HttpStatusCode.BadRequest, e.Message);
return errorResponse;
}
var context = new BloggingSystemContext();
var user = context.Users.FirstOrDefault(
usr => usr.SessionKey == sessionKey);
var post = new Post()
{
Title = model.Title,
Text = model.Text,
PostDate = DateTime.Now,
User = user
};
var matches = Regex.Matches(model.Title, @"\b[a-zA-Z]{1,}\b");
foreach (Match match in matches)
{
var tag = context.Tags.FirstOrDefault(t => t.Text == match.Value);
if (tag == null)
{
tag = new Tag()
{
Text = match.Value
};
}
post.Tags.Add(tag);
}
foreach (string tagText in model.Tags)
{
var tag = context.Tags.FirstOrDefault(t => t.Text == tagText);
if (tag == null)
{
tag = new Tag()
{
Text = tagText
};
}
post.Tags.Add(tag);
}
context.Posts.Add(post);
context.SaveChanges();
var result = new PostResponseModel()
{
Id = post.PostId,
Title = post.Title
};
var response = this.Request.CreateResponse(HttpStatusCode.Created, result);
return response;
}
