import os
from dataclasses import dataclass

from dotenv import load_dotenv

load_dotenv()

GOOGLE_SCOPES = (
    "https://www.googleapis.com/auth/gmail.modify",
    "https://www.googleapis.com/auth/calendar.readonly",
)


@dataclass(frozen=True)
class Settings:
    google_client_secrets_file: str
    google_token_file: str
    gmail_scan_interval_minutes: int
    gmail_query: str
    agent_api_key: str
    log_level: str


def get_settings() -> Settings:
    return Settings(
        google_client_secrets_file=os.getenv("GOOGLE_CLIENT_SECRETS_FILE", "credentials.json"),
        google_token_file=os.getenv("GOOGLE_TOKEN_FILE", "token.json"),
        gmail_scan_interval_minutes=int(os.getenv("GMAIL_SCAN_INTERVAL_MINUTES", "5")),
        gmail_query=os.getenv(
            "GMAIL_QUERY", "in:inbox -label:AgentProcessed newer_than:7d"
        ),
        agent_api_key=os.getenv("AGENT_API_KEY", ""),
        log_level=os.getenv("LOG_LEVEL", "INFO"),
    )