public static void GetDataById(int articleId)
{
HabrArticle habrArticle = MongoDbDriver.GetHabrArticleByIdFromDb(articleId);
if (habrArticle == null)
{
habrArticle = HabrArticleController.GetHabrArticleFromInternet(articleId);
MongoDbDriver.AddHabrArticleToDb(habrArticle);
}
HabrArticleController.Show(habrArticle);
}
public static void Show(HabrArticle habrArticle)
{
if (habrArticle != null)
{
Console.Write("\nТема: " + habrArticle.Theme);
Console.Write("\n\nНазвание статьи:\n" + habrArticle.Title);
Console.Write("\n\nТеги:\n");
foreach (var tag in habrArticle.Tags)
{
Console.WriteLine("\t" + tag);
}
Console.Write("\n\nДата публикации статьи: " + habrArticle.PublicationDate);
Console.WriteLine("\n\n");
}
}
public static HabrArticle GetHabrArticleFromInternet(int articleId)
{
HtmlDocument document;
try
{
var web = new HtmlWeb();
document = web.Load(Resources.postString + articleId + "/");
}
catch (System.Net.WebException ex)
{
Console.WriteLine("\nНевозможно получить доступ к ресурсу!\n");
return(null);
}
try
{
var tags = document.DocumentNode.SelectNodes("//a[contains(@class,'hub')]");
var tempTags = new List <string>();
tempTags.AddRange(tags.Select(x => x.InnerText));
var habrArticle = new HabrArticle
{
HabrId = articleId,
Theme = document.DocumentNode.SelectSingleNode("//h1[contains(@class,'post__title')]//a").InnerText,
Title = document.DocumentNode.SelectNodes("//h1[contains(@class,'post__title')]//span")[1].InnerText,
Tags = tempTags,
PublicationDate = document.DocumentNode.SelectSingleNode("//span[contains(@class,'post__time_published')]").InnerText
};
return(habrArticle);
}
catch (Exception ex)
{
Console.WriteLine("\nError 404: Article not found =(\n");
return(null);
}
}
public static void AddHabrArticleToDb(HabrArticle habrArticle)
{
Connect();
_habrArticleCollection?.InsertOne(habrArticle);
}