Add new card/header images

resources/toml-check.py

@@ -1,9 +1,15 @@
 #!/usr/bin/env python3
+import os
 import re
 import sys
 import tomllib
 
 
+def kebab_case(string):
+    # Naive implementation of kebab case to find icon names from lesson areas
+    return re.sub(r'[^a-zA-Z0-9]+', '-', string.strip()).lower()
+
+
 def error(msg):
     print('ERROR:', msg, file=sys.stderr)
     sys.exit(1)
@@ -64,3 +70,13 @@ def error(msg):
 
     if destinations and [x for x in destinations if x != 'spaces']:
         error(f'Only "spaces" is allowed in `destinations` in {f}')
+
+    card_icons = os.listdir('common/images/card-header-icons')
+    preview_icons = os.listdir('common/images/preview-header-icons')
+
+    for lesson_area in meta['lesson_areas']:
+        expected_icon_name = f'{kebab_case(lesson_area)}.png'
+        if expected_icon_name not in card_icons:
+            error(f'Lesson area {lesson_area} not found in card icons')
+        if expected_icon_name not in preview_icons:
+            error(f'Lesson area {lesson_area} not found in preview icons')