from pathlib import Path
import os

from dotenv import load_dotenv


BASE_DIR = Path(__file__).resolve().parent.parent
PROJECT_ROOT = BASE_DIR.parent
ENV_FILE = BASE_DIR / ".env"
ROOT_ENV_FILE = PROJECT_ROOT / ".env"

load_dotenv(ROOT_ENV_FILE)
load_dotenv(ENV_FILE, override=True)


class Settings:
    def __init__(self) -> None:
        self.app_name = os.getenv("APP_NAME", "Clinica Veterinaria Formiginese API")
        self.app_env = os.getenv("APP_ENV", "development")
        self.app_host = os.getenv("APP_HOST", "127.0.0.1")
        self.app_port = int(os.getenv("APP_PORT", "8000"))
        default_sqlite_path = (PROJECT_ROOT / "data" / "clinica.db").resolve()
        self.database_url = os.getenv("DATABASE_URL", f"sqlite:///{default_sqlite_path.as_posix()}")
        self.smtp_host = os.getenv("SMTP_HOST", "smtp.gmail.com")
        self.smtp_port = int(os.getenv("SMTP_PORT", "587"))
        self.smtp_username = os.getenv("SMTP_USERNAME", "")
        self.smtp_password = os.getenv("SMTP_PASSWORD", "")
        self.smtp_use_tls = os.getenv("SMTP_USE_TLS", "true").lower() in {"1", "true", "yes", "on"}
        self.booking_email_from = os.getenv("BOOKING_EMAIL_FROM", self.smtp_username)
        self.booking_email_to = os.getenv("BOOKING_EMAIL_TO", "")
        self.booking_email_subject_prefix = os.getenv(
            "BOOKING_EMAIL_SUBJECT_PREFIX",
            "[Clinica Veterinaria Formiginese]",
        )

    @property
    def sqlite_file_path(self) -> str | None:
        sqlite_prefix = "sqlite:///"
        if self.database_url.startswith(sqlite_prefix):
            return self.database_url.removeprefix(sqlite_prefix)
        return None

    @property
    def booking_mail_enabled(self) -> bool:
        return all(
            [
                self.smtp_host,
                self.smtp_port,
                self.smtp_username,
                self.smtp_password,
                self.booking_email_from,
                self.booking_email_to,
            ]
        )


settings = Settings()