"""Tailscale Netzwerk-Status Tool."""

import json
import subprocess

TOOLS = [
    {
        "type": "function",
        "function": {
            "name": "get_tailscale_status",
            "description": "Tailscale VPN Netzwerk-Status: Welche Geraete/Server sind online oder offline? Nutze bei 'ist Server X erreichbar', 'welche Geraete sind online', 'Netzwerk-Status', 'VPN'.",
            "parameters": {
                "type": "object",
                "properties": {
                    "query": {"type": "string", "description": "Optional: Name filtern (z.B. 'pve', 'gold', 'wordpress')", "default": ""}
                },
                "required": [],
            },
        },
    },
]


def handle_get_tailscale_status(query="", **kw):
    try:
        out = subprocess.check_output(
            ["tailscale", "status", "--json"], text=True, timeout=10
        )
    except Exception as e:
        return f"Tailscale nicht verfuegbar: {e}"

    d = json.loads(out)
    peers = d.get("Peer", {})

    devices = []
    for key, p in peers.items():
        name = p.get("HostName", "?")
        ip = p.get("TailscaleIPs", ["?"])[0]
        online = p.get("Online", False)
        last = p.get("LastSeen", "")[:10]
        devices.append({"name": name, "ip": ip, "online": online, "last": last})

    if query:
        q = query.lower()
        devices = [d for d in devices if q in d["name"].lower() or q in d["ip"]]

    online = [d for d in devices if d["online"]]
    offline = [d for d in devices if not d["online"]]

    lines = [f"Tailscale: {len(online)} online, {len(offline)} offline (von {len(devices)} Geraeten)"]

    if online:
        lines.append(f"\n=== ONLINE ({len(online)}) ===")
        for d in sorted(online, key=lambda x: x["name"]):
            lines.append(f"  {d['name']:28s} {d['ip']}")

    if offline:
        lines.append(f"\n=== OFFLINE ({len(offline)}) ===")
        for d in sorted(offline, key=lambda x: x["name"]):
            lines.append(f"  {d['name']:28s} {d['ip']:18s} zuletzt: {d['last']}")

    return "\n".join(lines)


HANDLERS = {
    "get_tailscale_status": handle_get_tailscale_status,
}