first commit

backend/app/template_message_validator.py

@@ -0,0 +1,16 @@
+import re
+
+PLACEHOLDER_PATTERN = re.compile(r"\{#(?:var|num)#\}")
+
+
+def message_matches_template(template_text: str, message: str) -> bool:
+    message = message.strip()
+    if not message:
+        return False
+    parts = PLACEHOLDER_PATTERN.split(template_text.strip())
+    pattern = ""
+    for index, part in enumerate(parts):
+        pattern += re.escape(part)
+        if index < len(parts) - 1:
+            pattern += r".+?"
+    return re.fullmatch(pattern, message, flags=re.DOTALL) is not None