from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(
        env_file=[".env", "../.env"],
        env_file_encoding="utf-8",
        extra="ignore",
    )

    # Microsoft Graph / App credentials
    TENANT_ID: str = ""
    CLIENT_ID: str = ""
    CLIENT_SECRET: str = ""

    # MongoDB
    MONGO_URI: str = ""
    DB_NAME: str = "micro_soc"

    # Periodic fetch
    ENABLE_PERIODIC_FETCH: bool = False
    FETCH_INTERVAL_MINUTES: int = 60

    # Auth (OIDC/Bearer) settings
    AUTH_ENABLED: bool = False
    AUTH_TENANT_ID: str = ""
    AUTH_CLIENT_ID: str = ""
    AUTH_SCOPE: str = ""
    AUTH_ALLOWED_ROLES: str = ""
    AUTH_ALLOWED_GROUPS: str = ""

    # Data retention (0 = disabled)
    RETENTION_DAYS: int = 0

    # CORS
    CORS_ORIGINS: str = "*"

    # SIEM export
    SIEM_ENABLED: bool = False
    SIEM_WEBHOOK_URL: str = ""

    # Alerting
    ALERTS_ENABLED: bool = False

    # AI / Natural Language Query
    AI_FEATURES_ENABLED: bool = True
    LLM_API_KEY: str = ""
    LLM_BASE_URL: str = "https://api.openai.com/v1"
    LLM_MODEL: str = "gpt-4o-mini"
    LLM_MAX_EVENTS: int = 200
    LLM_TIMEOUT_SECONDS: int = 30
    LLM_API_VERSION: str = ""  # e.g. 2025-01-01-preview for Azure OpenAI


_settings = Settings()

# Backward-compatible module-level exports
TENANT_ID = _settings.TENANT_ID
CLIENT_ID = _settings.CLIENT_ID
CLIENT_SECRET = _settings.CLIENT_SECRET
MONGO_URI = _settings.MONGO_URI
DB_NAME = _settings.DB_NAME

ENABLE_PERIODIC_FETCH = _settings.ENABLE_PERIODIC_FETCH
FETCH_INTERVAL_MINUTES = _settings.FETCH_INTERVAL_MINUTES

AUTH_ENABLED = _settings.AUTH_ENABLED
AUTH_TENANT_ID = _settings.AUTH_TENANT_ID or _settings.TENANT_ID or ""
AUTH_CLIENT_ID = _settings.AUTH_CLIENT_ID or _settings.CLIENT_ID or ""
AUTH_SCOPE = _settings.AUTH_SCOPE
AUTH_ALLOWED_ROLES = {r.strip() for r in _settings.AUTH_ALLOWED_ROLES.split(",") if r.strip()}
AUTH_ALLOWED_GROUPS = {g.strip() for g in _settings.AUTH_ALLOWED_GROUPS.split(",") if g.strip()}

RETENTION_DAYS = _settings.RETENTION_DAYS
CORS_ORIGINS = [o.strip() for o in _settings.CORS_ORIGINS.split(",") if o.strip()]

SIEM_ENABLED = _settings.SIEM_ENABLED
SIEM_WEBHOOK_URL = _settings.SIEM_WEBHOOK_URL
ALERTS_ENABLED = _settings.ALERTS_ENABLED

AI_FEATURES_ENABLED = _settings.AI_FEATURES_ENABLED
LLM_API_KEY = _settings.LLM_API_KEY
LLM_BASE_URL = _settings.LLM_BASE_URL
LLM_MODEL = _settings.LLM_MODEL
LLM_MAX_EVENTS = _settings.LLM_MAX_EVENTS
LLM_TIMEOUT_SECONDS = _settings.LLM_TIMEOUT_SECONDS
LLM_API_VERSION = _settings.LLM_API_VERSION