from pydantic_settings import BaseSettings
from typing import List, Optional
import os

class Settings(BaseSettings):
    # Database
    mongodb_url: str = "mongodb://localhost:27017"
    database_name: str = "contract_analysis"
    
    # Redis
    redis_url: str = "redis://localhost:6379"
    
    # Authentication
    jwt_secret_key: str = "your-super-secret-jwt-key-change-this-in-production"
    jwt_algorithm: str = "HS256"
    jwt_expire_minutes: int = 180
    
    # Azure AD / SSO Configuration
    azure_client_id: Optional[str] = None
    azure_tenant_id: Optional[str] = None
    azure_redirect_uri: Optional[str] = None
    azure_authority: Optional[str] = None
    sso_enabled: bool = False
    allow_local_admin: bool = True
    
    # OpenAI
    openai_api_key: str
    llamaparse_api_key: str  # Required for document processing
    
    # Application
    debug: bool = True
    cors_origins: List[str] = ["http://localhost:3000", "http://localhost:3002", "https://ai-sandbox.oliver.solutions", "*"]
    upload_dir: str = "./uploads"
    indices_dir: str = "./indices"
    
    # Document processing limits
    max_document_chars: int = 1000000  # 1 million characters for contract summaries
    max_summary_chars: int = 100000    # 100k characters for simple summaries
    
    # Cache - DISABLED for data freshness and debugging
    cache_enabled: bool = False
    cache_ttl: int = 3600
    
    class Config:
        env_file = ".env"
        case_sensitive = False

# Create settings instance
settings = Settings()

# Ensure directories exist
os.makedirs(settings.upload_dir, exist_ok=True)
os.makedirs(settings.indices_dir, exist_ok=True)