From 195b5892cd91fb11e6ecc9d7f818dd6899205787 Mon Sep 17 00:00:00 2001
From: Demis Bellot <demis.bellot@gmail.com>
Date: Sun, 2 Jul 2023 21:33:27 +0800
Subject: [PATCH] Add debug info when can't find include

---
 MyApp/MarkdownPagesBase.cs | 26 ++++++++++++++++++++++----
 1 file changed, 22 insertions(+), 4 deletions(-)

diff --git a/MyApp/MarkdownPagesBase.cs b/MyApp/MarkdownPagesBase.cs
index 2413338b4..712f5dcb7 100644
--- a/MyApp/MarkdownPagesBase.cs
+++ b/MyApp/MarkdownPagesBase.cs
@@ -383,16 +383,34 @@ protected override void Write(HtmlRenderer renderer, CustomContainerInline obj)
         
         renderer.Write("<div").WriteAttributes(obj).Write('>');
         MarkdownFileBase? doc = null;
+        string? slug = null;
+        var allIncludes = new List<MarkdownFileInfo>();
         if (include.EndsWith(".md"))
         {
             var markdown = HostContext.Resolve<MarkdownPages>();
             include = include.TrimStart('/');
             var prefix = include.LeftPart('/');
-            var slug = include.LeftPart('.');
-            doc = markdown.GetVisiblePages(prefix, allDirectories: true)
-                .FirstOrDefault(x => x.Slug == slug);
+            slug = include.LeftPart('.');
+            allIncludes = markdown.GetVisiblePages(prefix, allDirectories: true);
+            doc = allIncludes.FirstOrDefault(x => x.Slug == slug);
+        }
+
+        if (doc?.Preview != null)
+        {
+            renderer.WriteLine(doc.Preview!);            
+        }
+        else
+        {
+            var log = HostContext.Resolve<ILogger<IncludeContainerInlineRenderer>>();
+            log.LogError("Could not find: {Include}", include);
+            renderer.WriteLine($"Could not find: {include}");
+            renderer.WriteLine($"<!-- slug: {slug}, includes:");
+            foreach (var includeDoc in allIncludes)
+            {
+                renderer.WriteLine($"{includeDoc.Path}: {includeDoc.Slug}");
+            }
+            renderer.WriteLine("-->");
         }
-        renderer.WriteLine(doc != null ? doc.Preview! : $"Could not find: {include}");
         renderer.Write("</div>");
     }
 }