fix return line parsing

src/BirdsiteLive.Domain/Tools/StatusExtractor.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Linq;
 using System.Text.RegularExpressions;
 using BirdsiteLive.ActivityPub.Models;
 using BirdsiteLive.Common.Settings;
@@ -13,11 +14,15 @@ namespace BirdsiteLive.Domain.Tools
     public class StatusExtractor : IStatusExtractor
     {
         private readonly Regex _hastagRegex = new Regex(@"\W(\#[a-zA-Z0-9_ー]+\b)(?!;)");
+        //private readonly Regex _hastagRegex = new Regex(@"#\w+");
         //private readonly Regex _hastagRegex = new Regex(@"(?<=[\s>]|^)#(\w*[a-zA-Z0-9_ー]+\w*)\b(?!;)");
         //private readonly Regex _hastagRegex = new Regex(@"(?<=[\s>]|^)#(\w*[a-zA-Z0-9_ー]+)\b(?!;)");
+
         private readonly Regex _mentionRegex = new Regex(@"\W(\@[a-zA-Z0-9_ー]+\b)(?!;)");
+        //private readonly Regex _mentionRegex = new Regex(@"@\w+");
         //private readonly Regex _mentionRegex = new Regex(@"(?<=[\s>]|^)@(\w*[a-zA-Z0-9_ー]+\w*)\b(?!;)");
         //private readonly Regex _mentionRegex = new Regex(@"(?<=[\s>]|^)@(\w*[a-zA-Z0-9_ー]+)\b(?!;)");
+
         private readonly Regex _urlRegex = new Regex(@"((http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&amp;:/~\+#]*[\w\-\@?^=%&amp;/~\+#])?)");
         private readonly InstanceSettings _instanceSettings;
 
@@ -34,12 +39,12 @@ namespace BirdsiteLive.Domain.Tools
             messageContent = $" {messageContent} ";
 
             // Replace return lines
-            messageContent = Regex.Replace(messageContent, @"\r\n\r\n?|\n\n", "</p><p>");
-            messageContent = Regex.Replace(messageContent, @"\r\n?|\n", "<br/>");
+            messageContent = Regex.Replace(messageContent, @"\r\n\r\n?|\n\n", "</p><p> ");
+            messageContent = Regex.Replace(messageContent, @"\r\n?|\n", "<br/> ");
 
             // Extract Urls
             var urlMatch = _urlRegex.Matches(messageContent);
-            foreach (var m in urlMatch)
+            foreach (Match m in urlMatch)
             {
                 var url = m.ToString().Replace("\n", string.Empty).Trim();
 
@@ -69,8 +74,8 @@ namespace BirdsiteLive.Domain.Tools
             }
 
             // Extract Hashtags
-            var hashtagMatch = _hastagRegex.Matches(messageContent);
-            foreach (var m in hashtagMatch)
+            var hashtagMatch = OrderByLength(_hastagRegex.Matches(messageContent));
+            foreach (Match m in hashtagMatch)
             {
                 var tag = m.ToString().Replace("#", string.Empty).Replace("\n", string.Empty).Trim();
                 var url = $"https://{_instanceSettings.Domain}/tags/{tag}";
@@ -87,8 +92,8 @@ namespace BirdsiteLive.Domain.Tools
             }
 
             // Extract Mentions
-            var mentionMatch = _mentionRegex.Matches(messageContent);
-            foreach (var m in mentionMatch)
+            var mentionMatch = OrderByLength(_mentionRegex.Matches(messageContent));
+            foreach (Match m in mentionMatch)
             {
                 var mention = m.ToString().Replace("@", string.Empty).Replace("\n", string.Empty).Trim();
                 var url = $"https://{_instanceSettings.Domain}/users/{mention}";
@@ -105,7 +110,21 @@ namespace BirdsiteLive.Domain.Tools
                     $@" <span class=""h-card""><a href=""https://{_instanceSettings.Domain}/@{mention}"" class=""u-url mention"">@<span>{mention}</span></a></span>");
             }
 
+            // Clean up return lines
+            messageContent = Regex.Replace(messageContent, @"<p> ", "<p>");
+            messageContent = Regex.Replace(messageContent, @"<br/> ", "<br/>");
+
             return (messageContent.Trim(), tags.ToArray());
         }
+
+        private IEnumerable<Match> OrderByLength(MatchCollection matches)
+        {
+            var result = new List<Match>();
+
+            foreach (Match m in matches) result.Add(m);
+            result = result.OrderByDescending(x => x.Length).ToList();
+
+            return result;
+        }
     }
 }

src/Tests/BirdsiteLive.Domain.Tests/Tools/StatusExtractorTests.cs

@@ -22,6 +22,38 @@ namespace BirdsiteLive.Domain.Tests.Tools
         }
         #endregion
 
+        [TestMethod]
+        public void Extract_ReturnLines_Test()
+        {
+            #region Stubs
+            var message = "Bla.\n\n@Mention blo. https://t.co/pgtrJi9600";
+            #endregion
+            
+            var service = new StatusExtractor(_settings);
+            var result = service.ExtractTags(message);
+
+            #region Validations
+            Assert.IsTrue(result.content.Contains("Bla."));
+            Assert.IsTrue(result.content.Contains("</p><p>"));
+            #endregion
+        }
+
+        [TestMethod]
+        public void Extract_ReturnSingleLines_Test()
+        {
+            #region Stubs
+            var message = "Bla.\n@Mention blo. https://t.co/pgtrJi9600";
+            #endregion
+
+            var service = new StatusExtractor(_settings);
+            var result = service.ExtractTags(message);
+
+            #region Validations
+            Assert.IsTrue(result.content.Contains("Bla."));
+            Assert.IsTrue(result.content.Contains("<br/>"));
+            #endregion
+        }
+
         [TestMethod]
         public void Extract_FormatUrl_Test()
         {