import json
import sys

import pytest
from asyncclick.testing import CliRunner

from kasa import SmartDevice
from kasa.cli import alias, brightness, cli, emeter, raw_command, state, sysinfo

from .conftest import handle_turn_on, turn_on


async def test_sysinfo(dev):
    runner = CliRunner()
    res = await runner.invoke(sysinfo, obj=dev)
    assert "System info" in res.output
    assert dev.alias in res.output


@turn_on
async def test_state(dev, turn_on):
    await handle_turn_on(dev, turn_on)
    runner = CliRunner()
    res = await runner.invoke(state, obj=dev)
    await dev.update()

    if dev.is_on:
        assert "Device state: True" in res.output
    else:
        assert "Device state: False" in res.output


async def test_alias(dev):
    runner = CliRunner()

    res = await runner.invoke(alias, obj=dev)
    assert f"Alias: {dev.alias}" in res.output

    old_alias = dev.alias

    new_alias = "new alias"
    res = await runner.invoke(alias, [new_alias], obj=dev)
    assert f"Setting alias to {new_alias}" in res.output

    res = await runner.invoke(alias, obj=dev)
    assert f"Alias: {new_alias}" in res.output

    await dev.set_alias(old_alias)


async def test_raw_command(dev):
    runner = CliRunner()
    res = await runner.invoke(raw_command, ["system", "get_sysinfo"], obj=dev)

    assert res.exit_code == 0
    assert dev.alias in res.output

    res = await runner.invoke(raw_command, obj=dev)
    assert res.exit_code != 0
    assert "Usage" in res.output


@pytest.mark.skipif(sys.version_info < (3, 8), reason="3.8 is first one with asyncmock")
async def test_emeter(dev: SmartDevice, mocker):
    runner = CliRunner()

    res = await runner.invoke(emeter, obj=dev)
    if not dev.has_emeter:
        assert "Device has no emeter" in res.output
        return

    assert "== Emeter ==" in res.output

    monthly = mocker.patch.object(dev, "get_emeter_monthly")
    monthly.return_value = {1: 1234}
    res = await runner.invoke(emeter, ["--year", "1900"], obj=dev)
    assert "For year" in res.output
    assert "1, 1234" in res.output
    monthly.assert_called_with(year=1900)

    daily = mocker.patch.object(dev, "get_emeter_daily")
    daily.return_value = {1: 1234}
    res = await runner.invoke(emeter, ["--month", "1900-12"], obj=dev)
    assert "For month" in res.output
    assert "1, 1234" in res.output
    daily.assert_called_with(year=1900, month=12)


async def test_brightness(dev):
    runner = CliRunner()
    res = await runner.invoke(brightness, obj=dev)
    if not dev.is_dimmable:
        assert "This device does not support brightness." in res.output
        return

    res = await runner.invoke(brightness, obj=dev)
    assert f"Brightness: {dev.brightness}" in res.output

    res = await runner.invoke(brightness, ["12"], obj=dev)
    assert "Setting brightness" in res.output

    res = await runner.invoke(brightness, obj=dev)
    assert "Brightness: 12" in res.output


# Invoke fails when run on py3.7 with the following error:
# E        +  where 1 = <Result TypeError("object list can't be used in 'await' expression")>.exit_code
@pytest.mark.skipif(sys.version_info < (3, 8), reason="fails on python3.7")
async def test_json_output(dev: SmartDevice, mocker):
    """Test that the json output produces correct output."""
    mocker.patch("kasa.Discover.discover", return_value=[dev])
    runner = CliRunner()
    res = await runner.invoke(cli, ["--json", "state"], obj=dev)
    assert res.exit_code == 0
    assert json.loads(res.output) == dev.internal_state