core/config.py

import os
from pydantic_settings import BaseSettings

class Settings(BaseSettings):
    # API Settings
    PROJECT_NAME: str = "IDP Production Engine"
    API_V1_STR: str = "/api/v1"
    
    # CORS Settings - Required for metal-flow-gui frontend communication
    BACKEND_CORS_ORIGINS: list[str] = [
        "http://localhost:5173",  # TanStack Start development
        "http://127.0.0.1:5173",
        "http://localhost:3000",  # Legacy fallback
        "http://127.0.0.1:3000",
        "http://localhost:8080",
        "http://127.0.0.1:8080",
    ]
    
    # Support multiple keys for fallback
    GEMINI_API_KEYS: str = os.getenv("GEMINI_API_KEYS", "")
    GEMINI_API_KEY: str = os.getenv("GEMINI_API_KEY", "") 
    
    # Storage Settings
    UPLOAD_DIR: str = "uploads"
    
    # MongoDB Settings
    MONGO_URI: str = os.getenv("MONGO_URI", "mongodb://localhost:27017")
    DB_NAME: str = os.getenv("DB_NAME", "idp_production")
    
    # Celery / Redis Settings
    REDIS_URI: str = os.getenv("REDIS_URI", "redis://localhost:6379/0")
    
    class Config:
        env_file = ".env"
        case_sensitive = True

settings = Settings()

# Ensure upload directory exists
os.makedirs(settings.UPLOAD_DIR, exist_ok=True)