From df2a93a8a435d17fd5c300a9bc27edcd68613008 Mon Sep 17 00:00:00 2001
From: Jad Dayoub <jad.taim2003@gmail.com>
Date: Tue, 30 Jun 2026 15:58:48 +0200
Subject: [PATCH] Check if no files are being compared, mark as error

---
 scripts/cross_validation.py |  2 ++
 web/html/template.html      | 10 ++++++----
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/scripts/cross_validation.py b/scripts/cross_validation.py
index 2a664a8..ebe5ee6 100644
--- a/scripts/cross_validation.py
+++ b/scripts/cross_validation.py
@@ -80,6 +80,7 @@ def compare_folders(folder_a: str, folder_b: str, log: callable=None) -> dict:
     `status` indicates if differences exist:
     - 0 = folders are equal
     - 1 = differences in files found
+    - 2 = no files have been compared
 
     Args:
         folder_a (string): Path to folder A
@@ -113,6 +114,7 @@ def compare_folders(folder_a: str, folder_b: str, log: callable=None) -> dict:
             file_diffs[name] = "\n".join(diff)
 
     if file_diffs: status = 1
+    if not common_files: status = 2
 
     return {
         "folder_a": str(folder_a),
diff --git a/web/html/template.html b/web/html/template.html
index 47ef61b..4e40d91 100644
--- a/web/html/template.html
+++ b/web/html/template.html
@@ -12,6 +12,7 @@
     --text-dim: #9a9ca5;
     --equal: #3a6b4f;
     --file-diff: #8a3a3a;
+    --missing-files: #8a3a3a;
     --mono: "Fira Code", monospace;
   }
 
@@ -94,6 +95,7 @@
 
   .status-equal { background: var(--equal); }
   .status-file_diffs { background: var(--file-diff); }
+  .status-missing_files { background: var(--missing-files); }
 
   .legend {
     display: flex;
@@ -185,7 +187,7 @@ <h1>Validation-Suite</h1>
 
   <div class="legend">
     <span><i style="background: var(--equal)"></i>equal</span>
-    <span><i style="background: var(--file-diff)"></i>file difference</span>
+    <span><i style="background: var(--file-diff)"></i>file difference / no files compared</span>
   </div>
 
   <script>
@@ -193,15 +195,15 @@ <h1>Validation-Suite</h1>
 
     // map status code to different outputs
     function statusSign(statusCode) {
-      return {0: "✓", 1: "𐄂"}[statusCode] ?? `unknown(${statusCode})`;
+      return {0: "✓", 1: "𐄂", 2: "𐄂"}[statusCode] ?? `unknown(${statusCode})`;
     }
 
     function statusLabel(statusCode) {
-      return {0: "equal", 1: "file differences"}[statusCode] ?? `unknown(${statusCode})`;
+      return {0: "equal", 1: "file differences", 2: "no files compared"}[statusCode] ?? `unknown(${statusCode})`;
     }
 
     function statusColor(statusCode) {
-      return {0: "equal", 1: "file_diffs"}[statusCode] ?? `unknown(${statusCode})`;
+      return {0: "equal", 1: "file_diffs", 2: "missing_files"}[statusCode] ?? `unknown(${statusCode})`;
     }
 
     function worstStatus(comparisons) {