"""Starter IEC 61850 adapter scaffold for GridResilience Studio."""
from __future__ import annotations

from typing import Any, Dict


class IEC61850Adapter:
    def __init__(self, host: str = "127.0.0.1", port: int = 553, use_tls: bool = True) -> None:
        self.host = host
        self.port = port
        self.use_tls = use_tls
        self.connected = False

    def connect(self) -> bool:
        # Lightweight scaffold: pretend to connect
        self.connected = True
        return True

    def send_command(self, target_id: str, command: Dict[str, Any]) -> Dict[str, Any]:
        if not self.connected:
            raise RuntimeError("Not connected to IEC61850 endpoint")
        # Placeholder: echo back the command for testing purposes
        return {"status": "ok", "target": target_id, "command": command}

    def read_signals(self) -> Dict[str, Any]:
        if not self.connected:
            raise RuntimeError("Not connected to IEC61850 endpoint")
        # Placeholder signals
        return {"voltage": 1.0, "frequency": 50.0}