"""Subnet scan with mocked /shelly responses."""

from __future__ import annotations

from unittest.mock import AsyncMock, patch

import aiohttp
import pytest


@pytest.mark.asyncio
async def test_scan_subnet_finds_shelly() -> None:
    async def fetch_impl(
        session: aiohttp.ClientSession,
        ip: str,
        port: int = 80,
        timeout_sec: float = 2.0,
    ):
        if ip == "192.168.1.5":
            return {"type": "SHSW-21", "mac": "AABBCCDDEEFF", "fw": "1.0"}
        return None

    with patch(
        "shelly_manager.core.discovery.fetch_shelly_json",
        new_callable=AsyncMock,
        side_effect=fetch_impl,
    ):
        async with aiohttp.ClientSession() as session:
            from shelly_manager.core.discovery import scan_subnet_http

            results = await scan_subnet_http(session, "192.168.1.0/29", concurrency=8)

    ips = {r[0] for r in results}
    assert "192.168.1.5" in ips
    assert any("AABB" in r[1].get("mac", "") for r in results)