public List <ArticleInfo> GetAll()
{
string sqlExpression = "sp_GetArticles";
CCountryGateway countryGateway = new CCountryGateway();
List <ArticleInfo> articles = new List <ArticleInfo>();
STag articleTag = new STag();
using (SqlConnection conn = DBConnection.Instance.GetConnection())
{
conn.Open();
SqlCommand command = new SqlCommand(sqlExpression, conn);
command.CommandType = System.Data.CommandType.StoredProcedure;
using (var reader = command.ExecuteReader())
{
if (reader.HasRows)
{
while (reader.Read())
{
articleTag.Value = (string)reader["Tag"];
int countryId = (int)reader["CountryID"];
ArticleInfo article = new ArticleInfo();
article.ID = (int)reader["ID"];
article.Url = (string)reader["URL"];
article.Title = (string)reader["Title"];
article.Content = (string)reader["Content"];
article.Html = (byte[])reader["HTML"];
article.Date = (DateTime)reader[6]; //todo: fix the problem with Date -> rename column?
article.Country = countryGateway.Get(countryId);
article.Tag = articleTag;
articles.Add(article);
}
}
}
}
return(articles);
}
public static void Go()
{
Console.WriteLine(@"Welcome to OnLooker!!!!!");
try
{
/*--------------------------todo: implement DI Container ------------------------------------*/
CCountryGateway countryGw = new CCountryGateway();
CArticleGateway articleGw = new CArticleGateway();
CTagGateway tagGateway = new CTagGateway();
CArticleTagGateway artTagGateway = new CArticleTagGateway();
/* ---------------------------------------------------------------------------------------*/
CCountryService countryService = new CCountryService(countryGw);
CArticleService articleService = new CArticleService(articleGw);
CTagService tagService = new CTagService(tagGateway);
Int32 tagId;
/*create queryInfo entity storing all strings of user query */
QueryInfo queryInfo = new QueryInfo();
/*-----------------User interaction-------------------------*/
Console.WriteLine("Введите строку запроса");
String query = Console.ReadLine(); //todo: add option with choosing currency
/*-----------------And of user interaction-----------------*/
/*convert from user query to STag*/
CTag tag = new CTag(query);
queryInfo.Tag = tag;
/* Crawling */ //todo: put this logic to standalone class
String searchUrl = $"https://ria.ru/search/?query=" + query;
List <string> allUrls = CParser.ParseWebPage(searchUrl, new RegularExpressions().FindQeryUrls);
foreach (String url in allUrls)
{
ArticleInfo article = new ArticleInfo();
article.Tags = new [] { tag };
article.Title = "Some Title"; //todo: implement title parsing
article.Url = url;
article.Html = GetHtml(url);
article.Country = countryService.GetAllCountries().Find(x => x.ID == 1);
/*this function collect the content from webpage */
List <string> htmList = CParser.ParseWebPage(url, new RegularExpressions().GetContent);
StringBuilder content = new StringBuilder();
foreach (var html in htmList)
{
/*it should delete tags placed in text (like <strong> or <a>) */
content.AppendFormat(Regex.Replace(html, new RegularExpressions().GetAllTags, string.Empty)); //todo: fix regex, it shouldn't delete text stored between formatting tags
}
article.Content = content.ToString();
article.Date = DateTime.Now; //todo:implement parsing of url, to get the date of article
Console.WriteLine(url);
/*---------------------------------Interaction with DB--------------------------------------*/
/* put article into DB */
Int32 articleID = articleService.AddArticle(article);
Console.WriteLine(articleID);
/*checking if tag already exsists, if not - put new tag into DB*/ //todo: should remove this operation from foreach-block after creating query validation
List <string> exsistingTags = tagGateway.GetAllNames();
if (!exsistingTags.Contains(queryInfo.Tag.Value))
{
tagId = tagGateway.Create(queryInfo.Tag);
}
else
{
tagId = tagGateway.GetByName(queryInfo.Tag.Value);
}
/* put article-tag relation into DB*/
artTagGateway.AddRelation(tagId, articleID);
}
Console.WriteLine("End of main procedure");
/*------------------------------------Data output----------------------------*/
List <ArticleInfo> articlesInDb = articleService.GetAllArticles();
Console.SetWindowSize(160, 50);
Console.WriteLine("|{0,-30}|{1,-5}|{2,-60}|{3,-15}|{4,-15}|{5,-20}|", "Tag", "ID", "Url", "Title", "Country", "Date");
Console.WriteLine("|{0,30}|{1,5}|{2,60}|{3,15}|{4,15}|{5,20}|", "____ ", "_____", "_____________________", "_____", "_____", "_____");
foreach (ArticleInfo article in articlesInDb)
{
Console.WriteLine("|{0,-30}|{1,-5}|{2,-60}|{3,-15}|{4,-15}|{5,-20}|", article.Tags[0].Value, article.ID, article.Url, article.Title, article.Country.Name, article.Date);
}
//HelperMethodForLinqLab(articlesInDb);
}
catch (Exception e)
{
SLogger.Log.Fatal("Unexpected termination: " + e.Message);
Console.WriteLine(e.Message);
}
Console.ReadLine();
}
