Program.cs

class Program
{
    private static string filePath = string.Empty;
    private static string yearInput = string.Empty;
    private static int year = -1;
    private static int profileId = 0;
    private static string profileIdInput = string.Empty;
    private static List<Article> articlesInfos;
    static void Main(string[] args)
    {
        var commandLineParser = new FluentCommandLineParser();

        commandLineParser.Setup<string>('p', "path").Callback(s => filePath = s);
        commandLineParser.Setup<string>('y', "year").Callback(y => yearInput = y);
        commandLineParser.Setup<string>('i', "profileId").Callback(p => profileIdInput = p);
        commandLineParser.Parse(args);

        bool isProfileIdCorrect = int.TryParse(profileIdInput, out profileId);
        if (string.IsNullOrEmpty(profileIdInput) || !isProfileIdCorrect)
        {
            Console.WriteLine("Please specify a correct profileId.");
            return;
        }
        if (string.IsNullOrEmpty(filePath))
        {
            Console.WriteLine("Please specify a correct file path.");
            return;
        }
        if (!string.IsNullOrEmpty(yearInput))
        {
            bool isYearCorrect = int.TryParse(yearInput, out year);
            if (!isYearCorrect)
            {
                Console.WriteLine("Please specify a correct year!");
                return;
            }
        }
        articlesInfos = GetAllArticlesInfos();
        if (year == -1)
        {
            CreateReportAllTime();
        }
        else
        {
            CreateReportYear();
        }
           

        Console.WriteLine("Total VIEWS: {0}", articlesInfos.Sum(x => x.Views));
        Console.ReadLine();
    }

    private static void CreateReportAllTime()
    {
        TextWriter textWriter = new StreamWriter(filePath);
        var csv = new CsvWriter(textWriter);
        csv.WriteRecords(articlesInfos.OrderByDescending(x => x.Views));
    }

    private static void CreateReportYear()
    {
        TextWriter currentYearTextWriter = new StreamWriter(filePath);
        var csv = new CsvWriter(currentYearTextWriter);
        csv.WriteRecords(articlesInfos.Where(x => x.PublishDate.Year.Equals(year)).OrderByDescending(x => x.Views));
    }

    private static List<Article> GetAllArticlesInfos()
    {
        var articlesInfos = new List<Article>();
        using (var driver = new ChromeDriver())
        {
            var articlePage = new ArticlesPage(driver, profileId);
            articlesInfos.AddRange(articlePage.GetArticlesByUrl("#Articles"));
        }
        using (var driver = new ChromeDriver())
        {
            var articlePage = new ArticlesPage(driver, profileId);
            articlesInfos.AddRange(articlePage.GetArticlesByUrl("#TechnicalBlog"));
        }
        using (var driver = new ChromeDriver())
        {
            var articlePage = new ArticlesPage(driver, profileId);
            articlesInfos.AddRange(articlePage.GetArticlesByUrl("#Tip"));
        }

        return articlesInfos;
    }
}