Add Config class

motor_passo/config.py

@@ -0,0 +1,51 @@
+import json
+import logging
+
+from dataclasses import dataclass, field
+from motor_passo import config_dir
+from pathlib import Path
+
+
+@dataclass
+class Config:
+    config_path: Path
+
+    _json: dict = field(default_factory=dict)
+    _l: logging.Logger = None
+
+    def __post_init__(self):
+        self._l = logging.getLogger(__name__).getChild(self.__class__.__name__)
+
+    def load(self) -> bool:
+        self.config_path = self.config_path.expanduser()
+
+        self._l.info(f"Carregando configuração de {self.config_path}")
+
+        try:
+            with self.config_path.open("r") as f:
+                self._json = json.load(f)
+
+            for k, v in self._json.items():
+                setattr(self, k, v)
+        except FileNotFoundError:
+            self._l.exception("Arquivo de configuração não existe")
+            raise RuntimeError()  # TODO: Usar exception customizada
+        except json.JSONDecodeError:
+            self._l.exception("Configuração inválida")
+            raise RuntimeError()  # TODO: Usar exception customizada
+
+        return True
+
+
+_configs = {}
+
+
+def get_config(name: str) -> Config:
+    global _configs
+
+    if name in _configs:
+        return _configs[name]
+
+    _configs[name] = Config(config_path=config_dir / name)
+    _configs[name].load()
+    return _configs[name]