from pydantic_settings import BaseSettings, SettingsConfigDict
from typing import Optional

class Settings(BaseSettings):
    # AWS Settings
    AWS_ACCESS_KEY_ID: Optional[str] = None
    AWS_SECRET_ACCESS_KEY: Optional[str] = None
    AWS_REGION: str = "us-east-1"
    AWS_S3_BUCKET: Optional[str] = None

    # Security
    SECRET_KEY: str = "supersecret-placeholder"
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 30

    # LLM Keys
    OPENAI_API_KEY: Optional[str] = None
    GEMINI_API_KEY: Optional[str] = None

    # Database
    DATABASE_URL: Optional[str] = None

    # Google / Transformation Settings
    GOOGLE_OAUTH_CLIENT_SECRETS: Optional[str] = None
    GOOGLE_OAUTH_TOKEN: Optional[str] = None
    GOOGLE_OAUTH_TOKEN_JSON: Optional[str] = None
    GCS_BUCKET: Optional[str] = None
    GCP_SA_JSON: Optional[str] = None
    GEMINI_USE_VERTEX: Optional[str] = None
    GCP_PROJECT: Optional[str] = None
    GCP_LOCATION: Optional[str] = None
    DRIVE_FOLDER_ID: Optional[str] = None

    # Azure RAG Settings
    AZURE_SEARCH_KEY: Optional[str] = None
    AZURE_SEARCH_INDEX_NAME: Optional[str] = None
    BLOB_CONNECTION_STRING: Optional[str] = None
    BLOB_CONTAINER_NAME: Optional[str] = None
    AZURE_SEARCH_ENDPOINT: Optional[str] = None
    AZURE_OPENAI_ENDPOINT: Optional[str] = None
    AZURE_OPENAI_API_KEY: Optional[str] = None
    AZURE_OPENAI_DEPLOYMENT_NAME: Optional[str] = None
    AZURE_OPENAI_API_VERSION: Optional[str] = None

    # Supabase Settings (Unified Auth)
    SUPABASE_URL: Optional[str] = None
    SUPABASE_ANON_KEY: Optional[str] = None
    SUPABASE_JWT_SECRET: Optional[str] = None

    model_config = SettingsConfigDict(
        env_file=".env",
        extra="ignore"
    )

settings = Settings()