fast init

src/template_project/web_api/configuration.py

@@ -0,0 +1,53 @@
+from dataclasses import dataclass
+from datetime import timedelta
+from pathlib import Path
+from tomllib import loads
+from typing import dataclass_transform
+from adaptix import P, Retort, loader
+
+from template_project.application.common.containers import SecretString
+
+
+@dataclass_transform(frozen_default=True)
+def to_configuration[ClsT](cls: type[ClsT]) -> type[ClsT]:
+    return dataclass(frozen=True, slots=True, repr=False)(cls)
+
+
+@to_configuration
+class DatabaseConfiguration:
+    url: SecretString
+
+
+@to_configuration
+class AccessTokenConfiguration:
+    crypto_key: str
+    expires_in: timedelta
+
+
+@to_configuration
+class ServerConfiguration:
+    host: str
+    port: int
+    access_log: bool
+
+
+@to_configuration
+class Configuration:
+    server: ServerConfiguration
+    database: DatabaseConfiguration
+    access_token: AccessTokenConfiguration
+
+
+retort = Retort(
+    recipe=[
+        loader(SecretString, SecretString),
+        loader(P[AccessTokenConfiguration].expires_in, lambda value: timedelta(seconds=value)),
+    ],
+)
+
+
+def load_configuration(path: Path) -> Configuration:
+    with path.open("r", encoding="utf-8") as config:
+        data = loads(config.read())
+
+    return retort.load(data, Configuration)