Add app settings

backend/app/settings.py

@@ -0,0 +1,33 @@
+
+import os
+from functools import lru_cache
+from typing import Optional
+
+from pydantic import Field
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class _BaseConfig(BaseSettings):
+    model_config = SettingsConfigDict(
+        env_file=".env", extra="ignore", nested_model_default_partial_update=True
+    )
+
+
+class _AppSettings(_BaseConfig):
+    environment: str = Field(default=os.getenv("ENVIRONMENT"))
+
+
+class _DbSettings(_BaseConfig):
+    username: str = Field(default=os.getenv("PG_USER"), alias="PG_USER")
+    password: str = Field(default=os.getenv("PG_PASSWORD"), alias="PG_PASSWORD")
+    db_name: str = Field(default=os.getenv("PG_DB_NAME"), alias="PG_DB_NAME")
+
+
+class _Settings(_BaseConfig):
+    app: _AppSettings = _AppSettings()
+    db: _DbSettings = _DbSettings()
+
+
+@lru_cache
+def get_settings() -> _Settings:
+    return _Settings()

backend/requirements.txt

@@ -3,3 +3,4 @@ uvicorn
 sqlmodel
 pydantic
 sqlalchemy
+pydantic-settings