public string submitCodePost(string title, string content, string type)
{
using (ApplicationDbContext db = new ApplicationDbContext())
{
CodePost tmp = new CodePost();
content = HttpUtility.JavaScriptStringEncode(content);
var store = new UserStore<ApplicationUser>(db);
var userManager = new UserManager<ApplicationUser>(store);
ApplicationUser user = userManager.FindByNameAsync(User.Identity.Name).Result;
var currentUser = userManager.FindById(User.Identity.GetUserId());
if (title != null && content != null && type != null)
{
tmp.title = title;
tmp.content = content;
tmp.votes = 0;
tmp.user_id = user.Id;
tmp.userName = user.user;
tmp.userImgPath = currentUser.userImgPath;
}
bool result = updateHashTags(tmp);
if(result == false)
db.posts.Add(tmp);
db.SaveChanges();
return "success";
}
}
//finds all the hashtags in the post, stores the new ones, updates the existing ones
private bool updateHashTags(CodePost post)
{
bool added = false;
using (ApplicationDbContext db = new ApplicationDbContext())
{
//extracts all the tags
List<string> tags = new List<string>();
var regex = new Regex(@"(?<=#)\w+");
var matches = regex.Matches(post.content);
foreach (Match m in matches)
{
tags.Add(m.ToString());
}
//find and updates, not optimised should try O(1) access for every tag, for now this works
foreach (string postTag in tags)
{
HashTag result = db.tags.ToList().Find(t => t.tag == postTag);
//this is a new tag
if (result == null)
{
HashTag newTag = new HashTag();
newTag.count = 0;
newTag.tag = postTag;
db.posts.Add(post);
db.hashTags.Add(new HashTagPost() { Hash = newTag, Post = post });
added = true;
continue;
}
result.count++;
db.hashTags.Add(new HashTagPost() { Hash = result, Post = post });
db.posts.Add(post);
added = true;
}
db.SaveChanges();
}
return added;
}