from dataclasses import dataclass, field
from threading import Lock
from typing import Dict, List


@dataclass
class AppState:
    ap_mode: bool = False
    wifi_connected: bool = False
    internet_available: bool = False
    connecting: bool = False
    status_message: str = "Startup"
    last_error: str = ""
    known_ssids: List[str] = field(default_factory=list)
    ap_grace_until: float = 0.0
    lock: Lock = field(default_factory=Lock, repr=False)

    def update_status(self, message: str, error: str = "") -> None:
        with self.lock:
            self.status_message = message
            self.last_error = error

    def set_known_ssids(self, ssids: List[str]) -> None:
        with self.lock:
            self.known_ssids = ssids

    def snapshot(self) -> Dict[str, object]:
        with self.lock:
            return {
                "ap_mode": self.ap_mode,
                "wifi_connected": self.wifi_connected,
                "internet_available": self.internet_available,
                "connecting": self.connecting,
                "status_message": self.status_message,
                "last_error": self.last_error,
                "known_ssids": list(self.known_ssids),
            }