added firewall strategy pattern

src/firewall/fwtype.py

@@ -14,7 +14,7 @@ class FWType(ABC):
         cls._registry[cls.__name__.lower()] = cls
 
     @classmethod
-    def create(cls, fw_type: str, **kwargs) -> "FWType":
+    def create(cls, fw_type: str, **kwargs) -> 'FWType':
         """
         Factory method to create instances of child classes.
 

src/firewall/iptables.py

@@ -1,11 +1,10 @@
 from typing_extensions import override
 from firewall.fwtype import FWType
 
-
 class Iptables(FWType):
 
     @override
-    def getBanlist(self, ips) -> str:
+    def getBanlist(self,ips) -> str:
         """
         Generate iptables ban rules from an array of IP addresses.
 
@@ -30,7 +29,11 @@ class Iptables(FWType):
             ip = ip.strip()
 
             # Build the iptables command
-            rule_parts = ["iptables", "-A", chain, "-s", ip]
+            rule_parts = [
+                "iptables",
+                "-A", chain,
+                "-s", ip
+            ]
 
             # Add target
             rule_parts.extend(["-j", target])

src/firewall/raw.py

@@ -1,11 +1,10 @@
 from typing_extensions import override
 from firewall.fwtype import FWType
 
-
 class Raw(FWType):
 
     @override
-    def getBanlist(self, ips) -> str:
+    def getBanlist(self,ips) -> str:
         """
         Generate raw list of bad IP addresses.