Merge pull request #628 from tsdamas/issue-617

Fixing TagHelper that guestimates the read time.

Author: poppastring

source/DasBlog.Web.UI/TagHelpers/Post/PostReadTimeTagHelper.cs

@@ -2,7 +2,7 @@
 using DasBlog.Web.Models.BlogViewModels;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using System;
-using System.Linq;
+using System.Text.RegularExpressions;
 
 namespace DasBlog.Web.TagHelpers.Post
 {
@@ -20,9 +20,12 @@ public PostReadTimeTagHelper(IDasBlogSettings dasBlogSettings)
 
 		public override void Process(TagHelperContext context, TagHelperOutput output)
 		{
-			var delimiters = new char[] { ' ', '\r', '\n' };
-			var minute = Math.Round((double)dasBlogSettings.FilterHtml(Post.Content).Split(delimiters, StringSplitOptions.RemoveEmptyEntries).Length / 200);
+			var rx = new Regex(@"<img.*?src="".*?"".*?>");
+			var numberImages = rx.Matches(Post.Content).Count;
 
+			var imgMinutes = (double)(numberImages*30)/60;
+			var delimiters = new char[] { ' ', '\r', '\n' };
+			var minute = Math.Round((double)dasBlogSettings.FilterHtml(Post.Content).Split(delimiters, StringSplitOptions.RemoveEmptyEntries).Length / 200) + Math.Round(imgMinutes, MidpointRounding.AwayFromZero);
 			output.TagName = "span";
 			output.TagMode = TagMode.StartTagAndEndTag;
 			output.Attributes.SetAttribute("class", "dbc-post-readtime");