public static Post CreateNewEntity(PostModel postModel, User author, BloggingSystemContext context)
{
Post postEntity = new Post()
{
Title = postModel.Title,
Author = author,
PostDate = DateTime.Now,
Text = postModel.Text
};
foreach (var tagName in postModel.Tags)
{
postEntity.Tags.Add(Extensions.CreateOrLoadTag(tagName.ToLower(), context));
}
var titleTags = postModel.Title.Split(WordSeparators, StringSplitOptions.RemoveEmptyEntries);
foreach (var titleTagName in titleTags)
{
if (titleTagName.Length > 1)
{
postEntity.Tags.Add(Extensions.CreateOrLoadTag(titleTagName.ToLower(), context));
}
}
return postEntity;
}
public static PostedPost ToPostedModel(Post postEntity)
{
PostedPost postedPost = new PostedPost()
{
ID = postEntity.ID,
Title = postEntity.Title
};
return postedPost;
}
//POST api/posts/create
public HttpResponseMessage PostCreate(PostModel post, string sessionKey)
{
var context = new BlogContext();
var responseMsg = this.PerformOperationAndHandleExceptionsWithSessionKey(sessionKey, context, () =>
{
HttpResponseMessage response;
var newPost = new Post();
using (var tran = new TransactionScope())
{
newPost.Title = post.Title;
newPost.Text = post.Text;
newPost.PostDate = DateTime.Now;
newPost.User = context.Users.FirstOrDefault(u => u.SessionKey == sessionKey);
var tags = Helpers.GetTags(post, context);
tags.ForEach(t => newPost.Tags.Add(t));
context.Posts.Add(newPost);
context.SaveChanges();
tran.Complete();
}
if (newPost.Id > 0)
{
response = this.Request.CreateResponse(HttpStatusCode.Created, new ResponsePostModel()
{
Id = newPost.Id,
Title = newPost.Title
});
}
else
{
response = this.Request.CreateResponse(HttpStatusCode.InternalServerError);
}
return response;
});
return responseMsg;
}
public static PostModel ToModel(Post postEntity)
{
PostModel postModel = new PostModel()
{
ID = postEntity.ID,
Title = postEntity.Title,
Text = postEntity.Text,
PostDate = postEntity.PostDate,
Author = postEntity.Author.DisplayName
};
foreach (var commentEntity in postEntity.Comments)
{
postModel.Comments.Add(CommentsMapper.ToModel(commentEntity));
}
foreach (var tag in postEntity.Tags)
{
postModel.Tags.Add(tag.Name);
}
return postModel;
}
public HttpResponseMessage CreatePost(CreatePostDto value)
{
try
{
var sessionKey = ApiControllerHelper.GetHeaderValue(Request.Headers, "X-SessionKey");
if (sessionKey == null)
{
throw new ArgumentNullException("No session key provided in the request header!");
}
Validate(value.Title, "title");
Validate(value.Text, "text");
var context = new BloggingSystemContext();
using (context)
{
var user = context.Users.FirstOrDefault(u => u.SessionKey == sessionKey);
if (user == null)
{
throw new ArgumentException("Users must be logged in to create posts!");
}
var newPost = new Post()
{
Title = value.Title,
Text = value.Text,
PostDate = DateTime.Now,
Author = user
};
string[] tagsFromTitle = value.Title.Split(
new char[] { ' ', ',', '.', ';', '!', '?', ':' },
StringSplitOptions.RemoveEmptyEntries);
List<string> tagsToCheck = new List<string>();
foreach (var tagFromTitle in tagsFromTitle)
{
tagsToCheck.Add(tagFromTitle);
}
if (value.Tags != null)
{
foreach (string tagName in value.Tags)
{
tagsToCheck.Add(tagName);
}
}
foreach (string tagName in tagsToCheck)
{
var matchingTag = context.Tags.FirstOrDefault(t => string.Compare(t.Name, tagName, true) == 0);
if (matchingTag == null)
{
// tag not found, insert it in the database
matchingTag = new Tag
{
Name = tagName.ToLower()
};
context.Tags.Add(matchingTag);
context.SaveChanges();
}
newPost.Tags.Add(matchingTag);
}
context.Posts.Add(newPost);
context.SaveChanges();
var createdPostDto = new CreatePostDto()
{
Id = newPost.Id,
Title = newPost.Title,
Tags = newPost.Tags.Select(t => t.Name),
Text = newPost.Text
};
var response = Request.CreateResponse(HttpStatusCode.Created, createdPostDto);
return response;
}
}
catch (Exception ex)
{
var errorResponse = Request.CreateErrorResponse(HttpStatusCode.BadRequest, ex.Message);
throw new HttpResponseException(errorResponse);
}
}
public HttpResponseMessage PostPosts(Post post, string sessionKey)
{
var responseMsg = this.PerformOperationAndHandleExceptions(
() =>
{
var context = new BlogContext();
using (context)
{
var user = context.Users.FirstOrDefault(usr =>
usr.SessionKey == sessionKey);
if (user == null)
{
throw new InvalidOperationException("Invalid SessionKey!");
}
var newPost = new Post()
{
Id = post.Id,
Date = post.Date,
Title = post.Title,
Text = post.Text,
Tags = post.Tags,
Comments = post.Comments,
User = user
};
context.Posts.Add(newPost);
context.SaveChanges();
PostModel response = new PostModel()
{
Title = newPost.Title,
Id = newPost.Id
};
return this.Request.CreateResponse(HttpStatusCode.OK, response);
}
});
return responseMsg;
}
private void AddTitleTags(BloggingSystemContext context, PostModel postData, Post postEntity)
{
var titleTags = postData.Title.ToLower().Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (titleTags != null)
{
foreach (var tag in titleTags)
{
var tagEntity = this.GetOrCreateTag(context, tag);
postEntity.Tags.Add(tagEntity);
}
}
}
private void AddTags(BloggingSystemContext context, PostModel postData, Post postEntity)
{
if (postData.Tags != null)
{
foreach (var tag in postData.Tags)
{
var tagEntity = this.GetOrCreateTag(context, tag);
postEntity.Tags.Add(tagEntity);
}
}
}
public HttpResponseMessage PostAddPost(PostModel postData, [ValueProvider(typeof(HeaderValueProviderFactory<string>))] string sessionKey)
{
var responseMsg = this.PerformOperationAndHandleExceptions(
() =>
{
var context = new BloggingSystemContext();
using (context)
{
var user = GetAndValidateUser(sessionKey, context);
ValidatePost(postData);
var postEntity = new Post()
{
Text = postData.Text,
Title = postData.Title
};
postEntity.PostDate = DateTime.Now;
postEntity.User = user;
AddTags(context, postData, postEntity);
AddTitleTags(context, postData, postEntity);
context.Posts.Add(postEntity);
context.SaveChanges();
var postCreatedModel = new PostCreatedModel() { Id = postEntity.Id, Title = postEntity.Title };
var response = this.Request.CreateResponse(HttpStatusCode.Created, postCreatedModel);
return response;
}
});
return responseMsg;
}
//POST api/posts/
public HttpResponseMessage PostCreate(PostModel post,
[ValueProvider(typeof(HeaderValueProviderFactory<string>))] string sessionKey)
{
var context = new BloggingSystemContext();
var user = context.Users.FirstOrDefault(usr => usr.SessionKey == sessionKey);
var responseMsg = this.PerformOperationAndHandleExceptionsWithSessionKey(
sessionKey, context, () =>
{
var newPost = new Post();
newPost.Title = post.Title;
newPost.Text = post.Text;
newPost.PostDate = DateTime.Now;
newPost.User = user;
newPost.Tags = new List<Tag>();
var pattern = new Regex(
@"( [^\W_\d] # starting with a letter
# followed by a run of either...
( [^\W_\d] | # more letters or
[-'\d](?=[^\W_\d]) # ', -, or digit followed by a letter
)*
[^\W_\d] # and finishing with a letter
)",
RegexOptions.IgnorePatternWhitespace);
foreach (Match m in pattern.Matches(newPost.Title))
{
var tagContent = m.Groups[1].Value.ToLower();
if (context.Tags.FirstOrDefault(t => t.Content == tagContent) == null)
{
newPost.Tags.Add(new Tag()
{
Content = tagContent,
});
}
}
context.Posts.Add(newPost);
context.SaveChanges();
var createdPost = new CreatedPost()
{
Id = newPost.Id,
Title = newPost.Title
};
var response = this.Request.CreateResponse(HttpStatusCode.Created, createdPost);
return response;
});
return responseMsg;
}
public HttpResponseMessage PostPost(CreatePostModel model)
{
var responseMessage = this.PerformOperationAndHandleExceptions(() =>
{
var sessionKey = this.GetHeaderValue(Request.Headers, "sessionKey");
var dbContext = new BlogContext();
// dbContext.Configuration.ProxyCreationEnabled = false;
using (dbContext)
{
var user = dbContext.Users.FirstOrDefault(usr => usr.SessionKey == sessionKey);
if (user == null)
{
throw new ArgumentException("Users must be logged when create a new post!");
}
List<Tag> newTags = new List<Tag>();
if (!(model.Tags==null))
{
foreach (var tagItem in model.Tags)
{
var tagEntity = new Tag()
{
Text = tagItem.ToLower()
};
newTags.Add(tagEntity);
}
}
//split title and add to the tags
string[] wordsIntitle = model.Title.Split(new char[] { ' ', ',','.','!','?' });
foreach (var word in wordsIntitle)
{
if (!(word == string.Empty))
{
var tagEntity = new Tag()
{
Text = word.ToLower().Trim()
};
newTags.Add(tagEntity);
}
}
var newPost = new Post()
{
Title = model.Title,
Text = model.Text,
PostDate = DateTime.Now,
User = user,
Tags=newTags
};
dbContext.Posts.Add(newPost);
dbContext.SaveChanges();
var postCreatedModel = new CreatedPostModel()
{
Title = newPost.Title,
Id = newPost.Id
};
var ret = Request.CreateResponse(HttpStatusCode.Created, postCreatedModel);
// var ret = Request.CreateResponse(HttpStatusCode.Created);
return ret;
}
});
return responseMessage;
}
public HttpResponseMessage PostNewPost(PostModel model, string sessionKey)
{
var responseMsg = this.PerformOperationAndHandleExceptions(
() =>
{
var context = new BlogContext();
using (context)
{
var user = context.Users.FirstOrDefault(u => u.SessionKey == sessionKey);
if (user == null)
{
throw new InvalidOperationException("Users doesn't exists");
}
if (model.Title == null)
{
throw new InvalidOperationException("Title cannot be null");
}
if (model.Text == null)
{
throw new InvalidOperationException("Text cannot be null");
}
Post post = new Post();
post.Title = model.Title;
post.Text = model.Text;
post.PostDate = DateTime.Now;
post.PostedBy = user;
foreach (var tag in model.Tags)
{
Tag currentTag = CreateOrLoadTag(context, tag.ToLower());
post.Tags.Add(currentTag);
}
string[] titleTags = Regex.Split(model.Title, @"[,!\. ;?']+");
foreach (var titleTagName in titleTags)
{
Tag titleTag = CreateOrLoadTag(context, titleTagName.ToLower());
post.Tags.Add(titleTag);
}
context.Posts.Add(post);
context.SaveChanges();
var response = this.Request.CreateResponse(HttpStatusCode.Created, new
{
Title = post.Title,
Id = post.Id
});
return response;
}
});
return responseMsg;
}
public HttpResponseMessage PostCreate(PostModel postModel,
[ValueProvider(typeof(HeaderValueProviderFactory<string>))] string sessionKey)
{
var responseMsg = this.ExceptionHandling(
() =>
{
var context = new BloggingSystemContext();
using (context)
{
var user = context.Users.FirstOrDefault(u => u.SessionKey == sessionKey);
if (user == null)
{
throw new InvalidOperationException("Invalid username or password!");
}
List<string> tags = new List<string>();
tags = TakeTags(postModel.Title);
foreach (var tagEntity in tags)
{
var tagInDb = context.Tags.FirstOrDefault(t => t.Name == tagEntity);
if(tagInDb == null)
{
var tag = new Tag()
{
Name = tagEntity,
User = user
};
context.Tags.Add(tag);
context.SaveChanges();
}
}
foreach (var tag in postModel.Tags)
{
var tagInDb = context.Tags.FirstOrDefault(t => t.Name == tag);
if (tagInDb == null)
{
var newTag = new Tag()
{
Name = tag,
User = user
};
context.Tags.Add(newTag);
context.SaveChanges();
}
}
var post = new Post()
{
Title = postModel.Title,
Text = postModel.Text,
User = user,
PostDate = DateTime.Now
};
context.Posts.Add(post);
context.SaveChanges();
var postCreated = new PostCreatedModel()
{
Id = post.Id,
Title = post.Title
};
var response =
this.Request.CreateResponse(HttpStatusCode.Created, postCreated);
return response;
}
});
return responseMsg;
}
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;
}
