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

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

    # === SAGE 100c (Windows uniquement) ===
    chemin_base: str
    utilisateur: str = "Administrateur"
    mot_de_passe: str

    # === Sécurité Gateway ===
    sage_gateway_token: str  # Token partagé avec le VPS Linux

    # === SMTP (optionnel sur Windows) ===
    smtp_host: Optional[str] = None
    smtp_port: int = 587
    smtp_user: Optional[str] = None
    smtp_password: Optional[str] = None
    smtp_from: Optional[str] = None

    # === API Windows ===
    api_host: str = "0.0.0.0"
    api_port: int = 8000
    
    # === CORS ===
    cors_origins: List[str] = ["*"]

settings = Settings()

def validate_settings():
    """Validation au démarrage"""
    if not settings.chemin_base or not settings.mot_de_passe:
        raise ValueError("❌ CHEMIN_BASE et MOT_DE_PASSE requis dans .env")
    if not settings.sage_gateway_token:
        raise ValueError("❌ SAGE_GATEWAY_TOKEN requis (doit être identique sur Linux)")
    return True