Update app/config.py

app/config.py

@@ -1,18 +1,41 @@
-import os
-from functools import lru_cache
-
-class Settings:
-    app_name: str = "QuantMind Backend"
-    environment: str = os.getenv("ENVIRONMENT", "dev")
-    cors_origins: list[str] = os.getenv("CORS_ORIGINS", "*").split(",")
-    model_path: str = os.getenv(
-        "MODEL_PATH",
-        "model/universal_multivariate_model_v1.h5",
-    )
-    yfinance_period: str = os.getenv("YF_PERIOD", "1y")
-    history_window: int = int(os.getenv("HISTORY_WINDOW", "60"))
-    max_forecast_days: int = int(os.getenv("MAX_FORECAST_DAYS", "14"))
-
-@lru_cache
-def get_settings() -> Settings:
-    return Settings()
+import os
+from functools import lru_cache
+from typing import List
+
+
+class Settings:
+    # App
+    app_name: str = "QuantMind Backend"
+    environment: str = os.getenv("ENVIRONMENT", "dev")
+
+    # CORS
+    cors_origins: List[str] = os.getenv("CORS_ORIGINS", "*").split(",")
+
+    # Model
+    model_path: str = os.getenv(
+        "MODEL_PATH",
+        "model/universal_multivariate_model_v1.h5",
+    )
+
+    # Market data (Alpha Vantage)
+    alpha_vantage_api_key: str = os.getenv("ALPHA_VANTAGE_API_KEY")
+
+    # Prediction params
+    history_window: int = int(os.getenv("HISTORY_WINDOW", "60"))
+    max_forecast_days: int = int(os.getenv("MAX_FORECAST_DAYS", "14"))
+
+    def validate(self):
+        """
+        Validate critical settings at runtime
+        """
+        if not self.alpha_vantage_api_key:
+            raise RuntimeError(
+                "ALPHA_VANTAGE_API_KEY is not set in environment variables"
+            )
+
+
+@lru_cache
+def get_settings() -> Settings:
+    settings = Settings()
+    settings.validate()
+    return settings