add ssl entries to Config

src/kassandra/config.py

@@ -5,14 +5,37 @@ Config related tools.
 import dataclasses
 import yaml
 
+from typing import Optional
+
 @dataclasses.dataclass
 class Config:
     username: str
     homeserver: str
     password: str
-    port: int
-    host: str
     alert_rooms: list[str]
+    port: int = 8000
+    host: str = "127.0.0.1"
+    tls: bool = False
+    tls_auth: bool = False
+    tls_crt: Optional[str] = None
+    tls_key: Optional[str] = None
+    ca_crt: Optional[str] = None
+
+    def check_integrity(self)->bool:
+        """ Check the integrity of the config.
+            Raise an error if the config is invalid,
+            should always return True (or raise an error).
+        """
+        if self.tls_auth and not self.tls:
+            raise ValueError("tls_auth is enable, but not tls.")
+        if self.tls and tls_crt is None:
+            raise ValueError("tls is enable but tls_crt was not provided")
+        if self.tls and tls_key is None:
+            raise ValueError("tls is enable but tls_key was not provided")
+        if self.tls_auth and ca_cert is None:
+            raise ValueError("tls_auth is enable, but ca_crt was not provided")
+        return True
+
 
 def load_config(file:str)->Config:
     """
@@ -20,5 +43,7 @@ def load_config(file:str)->Config:
     """
     with open(file, 'r') as f:
         data = yaml.load(f, Loader=yaml.loader.SafeLoader)
-    return Config(**data)
+    config = Config(**data)
+    config.check_integrity()
+    return config