refactor base + ignore .env

.gitignore

@@ -1,3 +1,4 @@
 .venv/
 state/*
 __pycache__
+.env*

pddnsc/base.py

@@ -21,6 +21,9 @@ class BaseSourceProvider(ABC):
             ipv4t,
             ipv6t,
         )
+        self.post_init()
+
+    def post_init(self): ...
 
     def __str__(self):
         return f"{self.__class__.__name__}: {self.name}"
@@ -68,6 +71,9 @@ class BaseOutputProvider(ABC):
     def __init__(self, name, config, ipv4t, ipv6t):
         self.name, self.config = name, config
         self.ipv4t, self.ipv6t = ipv4t, ipv6t
+        self.post_init()
+
+    def post_init(self): ...
 
     def __init_subclass__(cls) -> None:
         BaseOutputProvider._childs[cls.__name__] = cls
@@ -76,10 +82,10 @@ class BaseOutputProvider(ABC):
     def __str__(self):
         return f"{self.__class__.__name__}: {self.name}"
 
-    def best_client(self, addr_v4, addr_v6):
-        if addr_v6 is None and addr_v4 is not None:
-            return self.ipv4t
+    def best_transport(self, addr_v4, addr_v6):
+        if addr_v6:
             return self.ipv6t
+        return self.ipv4t
 
     @classmethod
     def validate_source_config(cls, name, config):
@@ -111,6 +117,9 @@ class BaseFilterProvider(ABC):
     def __init__(self, name, config, ipv4t, ipv6t):
         self.name, self.config = name, config
         self.ipv4t, self.ipv6t = ipv4t, ipv6t
+        self.post_init()
+
+    def post_init(self): ...
 
     def __init_subclass__(cls) -> None:
         BaseFilterProvider._childs[cls.__name__] = cls