refactor(enrichers): deduplicate shared logic into base classes and consolidate utils

flowsint-core/src/flowsint_core/utils.py

@@ -100,6 +100,52 @@ def is_root_domain(domain: str) -> bool:
         return False
 
 
+def get_root_domain(domain: str) -> str:
+    """
+    Extract the root domain from a given domain string.
+
+    Args:
+        domain: The domain string (can be a subdomain or root domain)
+
+    Returns:
+        The root domain (e.g., "example.com" from "sub.example.com" or "www.sub.example.com")
+    """
+    try:
+        if "://" in domain:
+            parsed = urlparse(domain)
+            domain = parsed.hostname or domain
+
+        parts = domain.split(".")
+
+        common_cc_tlds = [
+            ".co.uk",
+            ".com.au",
+            ".org.uk",
+            ".net.uk",
+            ".gov.uk",
+            ".ac.uk",
+            ".co.nz",
+            ".com.sg",
+            ".co.jp",
+            ".co.kr",
+            ".com.br",
+            ".com.mx",
+        ]
+
+        for cc_tld in common_cc_tlds:
+            if domain.endswith(cc_tld):
+                if len(parts) >= 3:
+                    return ".".join(parts[-3:])
+                return domain
+
+        if len(parts) >= 2:
+            return ".".join(parts[-2:])
+
+        return domain
+    except Exception:
+        return domain
+
+
 def is_valid_number(phone: str, region: str = "FR") -> bool:
     """
     Validates a phone number. Raises InvalidPhoneNumberError if invalid.

flowsint-enrichers/src/flowsint_enrichers/_shared/__init__.py

@@ -0,0 +1,5 @@
+from .dehashed_base import DehashedBase
+from .hudsonrock_base import HudsonRockBase
+from .asnmap_base import AsnmapBase
+
+__all__ = ["DehashedBase", "HudsonRockBase", "AsnmapBase"]