using Microsoft.VisualStudio.TestTools.WebTesting;
using System.Text.RegularExpressions;
using System.ComponentModel;

namespace Homework
{
    [DisplayName("Text Search Cutsom Validation")]
    public class TestSearchCustomValidation : ValidationRule
    {
        [DisplayName("Search Text"), Description("The text that your search result should contain.")]
        public string SearchText { get; set; }

        [DisplayName("Search List Regex Pattern"), Description("The regex pattern, with which to get the html tag containing " +
            "all of the search results.")]
        public string SearchListRegexPattern { get; set; }

        [DisplayName("Search Element Regex Pattern"), Description("The regex pattern, with which to get the html tag containing " +
            "a single element of the search results.")]
        public string ElementRegexPattern { get; set; }

        [DisplayName("Ignore Case"), Description("Specifies if the searched text will be case sensitive.")]
        public bool IgnoreCase { get; set; }

        public override void Validate(object sender, ValidationEventArgs e)
        {
            if (IgnoreCase)
            {
                SearchText = SearchText.ToUpper();
            }
            e.IsValid = Find(e.Response.BodyString);
        }

        private bool Find(string body)
        {
            string pattern = SearchListRegexPattern; // "<ul class=\"tSearchResultList tClear\">(.|\\s)*?</ul>"
            Match searchList = Regex.Match(body, pattern);
            Match searchListElement = Regex.Match(searchList.Value, ElementRegexPattern); //"<li>(.|\\s)*?</li>"
            while (searchListElement.Success)
            {
                string searchElementInnerHTML = searchListElement.Value;
                if (IgnoreCase)
                {
                    searchElementInnerHTML = searchElementInnerHTML.ToUpper();
                }
                string[] searchTextElements = SearchText.Split(' ');
                foreach (var word in searchTextElements)
                {
                    if (!searchElementInnerHTML.Contains(word))
                    {
                        return false;
                    }
                }
                searchListElement = searchListElement.NextMatch();
            }
            return true;
        }
    }
}