Initial commit

Co-authored-by: GitHub Copilot <noreply@github.com>

core/notifier.py

@@ -0,0 +1,45 @@
+import ipaddress
+import socket
+from urllib.parse import urlparse
+import requests
+
+
+def validate_notification_url(url: str):
+    parsed = urlparse(url or "")
+    if parsed.scheme not in {"http", "https"} or not parsed.hostname or parsed.username or parsed.password:
+        raise ValueError("Adres ntfy musi być adresem HTTP(S) bez danych logowania")
+    try:
+        addresses = {info[4][0] for info in socket.getaddrinfo(parsed.hostname, parsed.port, type=socket.SOCK_STREAM)}
+        if any(ipaddress.ip_address(address).is_private or ipaddress.ip_address(address).is_loopback or
+               ipaddress.ip_address(address).is_link_local for address in addresses):
+            raise ValueError("Adres ntfy wskazuje na prywatną lub lokalną sieć")
+    except socket.gaierror as exc:
+        raise ValueError("Nie można rozpoznać hosta ntfy") from exc
+
+def send_notification(url: str, topic: str, title: str, message: str, username: str = None, password: str = None):
+    if not url or not topic:
+        return False
+    validate_notification_url(url)
+        
+    full_url = f"{url.rstrip('/')}/{topic}"
+    headers = {
+        "Title": title.encode('utf-8')
+    }
+    
+    auth = None
+    if username and password:
+        auth = (username, password)
+        
+    try:
+        response = requests.post(
+            full_url,
+            data=message.encode('utf-8'),
+            headers=headers,
+            auth=auth,
+            timeout=5
+        )
+        response.raise_for_status()
+        return True
+    except Exception as e:
+        print(f"Failed to send ntfy notification: {e}")
+        return False