010 fix config

app/config.py

@@ -1,7 +1,9 @@
 """Application configuration split by architecture component."""
 
-import os
 from functools import lru_cache
+from pathlib import Path
+import sys
+from typing import Any
 
 from pydantic import BaseModel, Field, model_validator
 from pydantic_settings import (
@@ -12,7 +14,7 @@ from pydantic_settings import (
 )
 
 DEFAULT_CONFIG_FILE = "config.yaml"
-CONFIG_FILE_ENV = "G2S_CONFIG_FILE"
+TEST_CONFIG_FILE = "config.test.yaml"
 
 
 class ControllerConfig(BaseModel):
@@ -94,8 +96,6 @@ class AlertsConfig(BaseModel):
 
 class Settings(BaseSettings):
     model_config = SettingsConfigDict(
-        env_prefix="G2S_",
-        env_nested_delimiter="__",
         extra="ignore",
     )
 
@@ -116,19 +116,48 @@ class Settings(BaseSettings):
         dotenv_settings: PydanticBaseSettingsSource,
         file_secret_settings: PydanticBaseSettingsSource,
     ) -> tuple[PydanticBaseSettingsSource, ...]:
+        config_file = _resolve_runtime_config_file()
         yaml_source = YamlConfigSettingsSource(
             settings_cls,
-            yaml_file=os.getenv(CONFIG_FILE_ENV, DEFAULT_CONFIG_FILE),
+            yaml_file=config_file,
         )
         return (
             init_settings,
-            env_settings,
-            dotenv_settings,
             yaml_source,
-            file_secret_settings,
         )
 
 
+class _RequiredYamlSections(BaseModel):
+    controller: dict[str, Any]
+    service: dict[str, Any]
+    business_logic: dict[str, Any]
+    repository: dict[str, Any]
+    adapter: dict[str, Any]
+    observability: dict[str, Any]
+    alerts: dict[str, Any]
+
+
+def _resolve_runtime_config_file() -> str:
+    test_config_path = Path(TEST_CONFIG_FILE)
+    if "pytest" in sys.modules and test_config_path.is_file():
+        return TEST_CONFIG_FILE
+    return DEFAULT_CONFIG_FILE
+
+
+def _validate_required_yaml_sections() -> None:
+    config_file = _resolve_runtime_config_file()
+    config_path = Path(config_file)
+    if not config_path.is_file():
+        return
+
+    yaml_source = YamlConfigSettingsSource(Settings, yaml_file=config_file)
+    yaml_data = yaml_source.yaml_data
+    if not isinstance(yaml_data, dict):
+        yaml_data = {}
+    _RequiredYamlSections.model_validate(yaml_data)
+
+
 @lru_cache(maxsize=1)
 def get_settings() -> Settings:
+    _validate_required_yaml_sections()
     return Settings()