private TwitterCardContent ConstructTwitterCardContent(PostReadModel post)
{
var postImageUrl = ExtractPostImageUrl(post);
return(new TwitterCardContent(
post.Title,
post.GeneratePostAbsoluteUrl(),
!string.IsNullOrWhiteSpace(post.Abstract) ? post.Abstract : null,
postImageUrl,
HardcodedConstants.BlogTwitterHandle,
HardcodedConstants.BlogTwitterHandle));
}
public async Task <ActionResult <PostDTO> > CreatePost(PostReadModel postReadModel)
{
var post = new Post
{
Question = postReadModel.Question,
Images = new List <Image>()
};
_context.Posts.Add(post);
await _context.SaveChangesAsync();
return(CreatedAtAction(
nameof(GetPost),
new { id = post.PostId },
PostToPostDTO(post)));
}
private string ExtractPostImageUrl(PostReadModel post)
{
try
{
var htmlDoc = new HtmlDocument();
htmlDoc.LoadHtml(post.Content);
// see https://stackoverflow.com/a/4835960/463785
var imageNodes = htmlDoc.DocumentNode.SelectNodes("//img[@src]");
if (imageNodes != null && imageNodes.Any())
{
return(imageNodes.First().Attributes["src"].Value);
}
}
catch (Exception ex)
{
_logger.LogError(0, ex, "Error while extracting an image for blog post with Id '{BlogPostId}' and Title '{BlogPostTitle}'",
post.Id, post.Title);
}
return(null);
}
public static string GeneratePostAbsoluteUrl(this PostReadModel post)
{
return(string.Format(HardcodedConstants.BlogPostUriFormat, post.DefaultSlug.Path));
}
private static PostReadModel GetSamplePost2()
{
const string path = "sample-post-html-2.txt";
string content = GetPostContent(path);
var user = new UserReadModel
{
Id = "djidiweh",
Name = "Tugberk Ugurlu"
};
var samplePost = new PostReadModel
{
Id = "y9h9huj9u",
Title = "ASP.NET Core Authentication in a Load Balanced Environment with HAProxy and Redis",
Abstract = "Token based authentication is a fairly common way of authenticating a user for an HTTP application. However, handling this in a load balanced environment has always involved extra caring. In this post, I will show you how this is handled in ASP.NET Core by demonstrating it with HAProxy and Redis through the help of Docker.",
Language = "en-US",
Content = content,
Authors = new[] { user },
CommentStatusActions = new[]
{
new CommentStatusActionRecordReadModel
{
Status = CommentableStatusReadModel.Enabled,
RecordedBy = user,
RecordedOn = DateTime.UtcNow
}
},
ApprovalStatus = ApprovalStatusReadModel.Approved,
CreationRecord = new ChangeRecordReadModel
{
RecordedBy = user,
RecordedOn = DateTime.UtcNow,
IpAddress = "127.0.0.1"
},
Slugs = new[]
{
new SlugReadModel
{
Path = "asp-net-core-authentication-in-a-load-balanced-environment-with-haproxy-and-redis",
IsDefault = true,
CreatedOn = DateTime.UtcNow
}
},
Tags = new[]
{
new TagReadModel
{
Name = "ASP.NET Core",
Slugs = new[]
{
new SlugReadModel
{
Path = "asp-net-core",
IsDefault = true,
CreatedOn = DateTime.UtcNow
}
}
},
new TagReadModel
{
Name = "ASP.NET",
Slugs = new[]
{
new SlugReadModel
{
Path = "asp-net",
IsDefault = true,
CreatedOn = DateTime.UtcNow
}
}
},
new TagReadModel
{
Name = "Security",
Slugs = new[]
{
new SlugReadModel
{
Path = "security",
IsDefault = true,
CreatedOn = DateTime.UtcNow
}
}
},
new TagReadModel
{
Name = "HTTP",
Slugs = new[]
{
new SlugReadModel
{
Path = "http",
IsDefault = true,
CreatedOn = DateTime.UtcNow
}
}
},
new TagReadModel
{
Name = "Docker",
Slugs = new[]
{
new SlugReadModel
{
Path = "docker",
IsDefault = true,
CreatedOn = DateTime.UtcNow
}
}
}
}
};
return(samplePost);
}
private static PostReadModel GetSamplePost1()
{
const string path = "sample-post-html-1.txt";
string content = GetPostContent(path);
var user = new UserReadModel
{
Id = "djidiweh",
Name = "Tugberk Ugurlu"
};
var samplePost = new PostReadModel
{
Id = "ydy982d",
Title = "Defining What Good Looks Like for a Software Engineer",
Abstract = "What does good look like for a software engineer? This is a question you might be asking frequently to yourself and I tried to share my thoughts on the topic with this blog post.",
Language = "en-US",
Content = content,
Authors = (new[] { user }),
CommentStatusActions = new[]
{
new CommentStatusActionRecordReadModel
{
Status = CommentableStatusReadModel.Enabled,
RecordedBy = user,
RecordedOn = DateTime.UtcNow
}
},
ApprovalStatus = ApprovalStatusReadModel.Approved,
CreationRecord = new ChangeRecordReadModel
{
RecordedBy = user,
RecordedOn = DateTime.UtcNow,
IpAddress = "127.0.0.1"
},
Slugs = new[]
{
new SlugReadModel
{
Path = "defining-what-good-looks-like-for-a-software-engineer",
IsDefault = true,
CreatedOn = DateTime.UtcNow
}
},
Tags = new[]
{
new TagReadModel
{
Name = "Software Engineer",
Slugs = new[]
{
new SlugReadModel
{
Path = "software-engineer",
IsDefault = true,
CreatedOn = DateTime.UtcNow
}
}
},
new TagReadModel
{
Name = "Software Development",
Slugs = new[]
{
new SlugReadModel
{
Path = "software-development",
IsDefault = true,
CreatedOn = DateTime.UtcNow
}
}
}
}
};
return(samplePost);
}
