"""Diagnostics support for Tailscale."""

import json
from typing import Any

from homeassistant.components.diagnostics import async_redact_data
from homeassistant.const import CONF_API_KEY
from homeassistant.core import HomeAssistant

from .const import CONF_TAILNET
from .coordinator import TailscaleConfigEntry

TO_REDACT = {
    CONF_API_KEY,
    CONF_TAILNET,
    "addresses",
    "device_id",
    "endpoints",
    "hostname",
    "machine_key",
    "name",
    "node_id",
    "node_key",
    "tailnet_lock_key",
    "user",
}


async def async_get_config_entry_diagnostics(
    hass: HomeAssistant, entry: TailscaleConfigEntry
) -> dict[str, Any]:
    """Return diagnostics for a config entry."""
    # Round-trip via JSON to trigger serialization
    devices = [
        json.loads(device.to_json()) for device in entry.runtime_data.data.values()
    ]
    return async_redact_data({"devices": devices}, TO_REDACT)
