"""The tests for the Unifi WAP device tracker platform."""
from unittest import mock
from datetime import datetime, timedelta
from pyunifi.controller import APIError


import pytest
import voluptuous as vol

import homeassistant.util.dt as dt_util
from homeassistant.components.device_tracker import DOMAIN, unifi as unifi
from homeassistant.const import (CONF_HOST, CONF_USERNAME, CONF_PASSWORD,
                                 CONF_PLATFORM, CONF_VERIFY_SSL,
                                 CONF_MONITORED_CONDITIONS)
DEFAULT_DETECTION_TIME = timedelta(seconds=300)


@pytest.fixture
def mock_ctrl():
    """Mock pyunifi."""
    with mock.patch('pyunifi.controller.Controller') as mock_control:
        yield mock_control


@pytest.fixture
def mock_scanner():
    """Mock UnifyScanner."""
    with mock.patch('homeassistant.components.device_tracker.unifi'
                    '.UnifiScanner') as scanner:
        yield scanner


@mock.patch('os.access', return_value=True)
@mock.patch('os.path.isfile', mock.Mock(return_value=True))
def test_config_valid_verify_ssl(hass, mock_scanner, mock_ctrl):
    """Test the setup with a string for ssl_verify.

    Representing the absolute path to a CA certificate bundle.
    """
    config = {
        DOMAIN: unifi.PLATFORM_SCHEMA({
            CONF_PLATFORM: unifi.DOMAIN,
            CONF_USERNAME: 'foo',
            CONF_PASSWORD: 'password',
            CONF_VERIFY_SSL: "/tmp/unifi.crt"
        })
    }
    result = unifi.get_scanner(hass, config)
    assert mock_scanner.return_value == result
    assert mock_ctrl.call_count == 1
    assert mock_ctrl.mock_calls[0] == \
        mock.call('localhost', 'foo', 'password', 8443,
                  version='v4', site_id='default', ssl_verify="/tmp/unifi.crt")

    assert mock_scanner.call_count == 1
    assert mock_scanner.call_args == mock.call(mock_ctrl.return_value,
                                               DEFAULT_DETECTION_TIME,
                                               None, None)


def test_config_minimal(hass, mock_scanner, mock_ctrl):
    """Test the setup with minimal configuration."""
    config = {
        DOMAIN: unifi.PLATFORM_SCHEMA({
            CONF_PLATFORM: unifi.DOMAIN,
            CONF_USERNAME: 'foo',
            CONF_PASSWORD: 'password',
        })
    }
    result = unifi.get_scanner(hass, config)
    assert mock_scanner.return_value == result
    assert mock_ctrl.call_count == 1
    assert mock_ctrl.mock_calls[0] == \
        mock.call('localhost', 'foo', 'password', 8443,
                  version='v4', site_id='default', ssl_verify=True)

    assert mock_scanner.call_count == 1
    assert mock_scanner.call_args == mock.call(mock_ctrl.return_value,
                                               DEFAULT_DETECTION_TIME,
                                               None, None)


def test_config_full(hass, mock_scanner, mock_ctrl):
    """Test the setup with full configuration."""
    config = {
        DOMAIN: unifi.PLATFORM_SCHEMA({
            CONF_PLATFORM: unifi.DOMAIN,
            CONF_USERNAME: 'foo',
            CONF_PASSWORD: 'password',
            CONF_HOST: 'myhost',
            CONF_VERIFY_SSL: False,
            CONF_MONITORED_CONDITIONS: ['essid', 'signal'],
            'port': 123,
            'site_id': 'abcdef01',
            'detection_time': 300,
        })
    }
    result = unifi.get_scanner(hass, config)
    assert mock_scanner.return_value == result
    assert mock_ctrl.call_count == 1
    assert mock_ctrl.call_args == \
        mock.call('myhost', 'foo', 'password', 123,
                  version='v4', site_id='abcdef01', ssl_verify=False)

    assert mock_scanner.call_count == 1
    assert mock_scanner.call_args == mock.call(
        mock_ctrl.return_value,
        DEFAULT_DETECTION_TIME,
        None,
        config[DOMAIN][CONF_MONITORED_CONDITIONS])


def test_config_error():
    """Test for configuration errors."""
    with pytest.raises(vol.Invalid):
        unifi.PLATFORM_SCHEMA({
            # no username
            CONF_PLATFORM: unifi.DOMAIN,
            CONF_HOST: 'myhost',
            'port': 123,
        })
    with pytest.raises(vol.Invalid):
        unifi.PLATFORM_SCHEMA({
            CONF_PLATFORM: unifi.DOMAIN,
            CONF_USERNAME: 'foo',
            CONF_PASSWORD: 'password',
            CONF_HOST: 'myhost',
            'port': 'foo',  # bad port!
        })
    with pytest.raises(vol.Invalid):
        unifi.PLATFORM_SCHEMA({
            CONF_PLATFORM: unifi.DOMAIN,
            CONF_USERNAME: 'foo',
            CONF_PASSWORD: 'password',
            CONF_VERIFY_SSL: "dfdsfsdfsd",  # Invalid ssl_verify (no file)
        })


def test_config_controller_failed(hass, mock_ctrl, mock_scanner):
    """Test for controller failure."""
    config = {
        'device_tracker': {
            CONF_PLATFORM: unifi.DOMAIN,
            CONF_USERNAME: 'foo',
            CONF_PASSWORD: 'password',
        }
    }
    mock_ctrl.side_effect = APIError(
        '/', 500, 'foo', {}, None)
    result = unifi.get_scanner(hass, config)
    assert result is False


def test_scanner_update():
    """Test the scanner update."""
    ctrl = mock.MagicMock()
    fake_clients = [
        {'mac': '123', 'essid': 'barnet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
        {'mac': '234', 'essid': 'barnet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
    ]
    ctrl.get_clients.return_value = fake_clients
    unifi.UnifiScanner(ctrl, DEFAULT_DETECTION_TIME, None, None)
    assert ctrl.get_clients.call_count == 1
    assert ctrl.get_clients.call_args == mock.call()


def test_scanner_update_error():
    """Test the scanner update for error."""
    ctrl = mock.MagicMock()
    ctrl.get_clients.side_effect = APIError(
        '/', 500, 'foo', {}, None)
    unifi.UnifiScanner(ctrl, DEFAULT_DETECTION_TIME, None, None)


def test_scan_devices():
    """Test the scanning for devices."""
    ctrl = mock.MagicMock()
    fake_clients = [
        {'mac': '123', 'essid': 'barnet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
        {'mac': '234', 'essid': 'barnet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
    ]
    ctrl.get_clients.return_value = fake_clients
    scanner = unifi.UnifiScanner(ctrl, DEFAULT_DETECTION_TIME, None, None)
    assert set(scanner.scan_devices()) == set(['123', '234'])


def test_scan_devices_filtered():
    """Test the scanning for devices based on SSID."""
    ctrl = mock.MagicMock()
    fake_clients = [
        {'mac': '123', 'essid': 'foonet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
        {'mac': '234', 'essid': 'foonet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
        {'mac': '567', 'essid': 'notnet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
        {'mac': '890', 'essid': 'barnet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
    ]

    ssid_filter = ['foonet', 'barnet']
    ctrl.get_clients.return_value = fake_clients
    scanner = unifi.UnifiScanner(ctrl, DEFAULT_DETECTION_TIME, ssid_filter,
                                 None)
    assert set(scanner.scan_devices()) == set(['123', '234', '890'])


def test_get_device_name():
    """Test the getting of device names."""
    ctrl = mock.MagicMock()
    fake_clients = [
        {'mac': '123',
         'hostname': 'foobar',
         'essid': 'barnet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
        {'mac': '234',
         'name': 'Nice Name',
         'essid': 'barnet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
        {'mac': '456',
         'essid': 'barnet',
         'last_seen': '1504786810'},
    ]
    ctrl.get_clients.return_value = fake_clients
    scanner = unifi.UnifiScanner(ctrl, DEFAULT_DETECTION_TIME, None, None)
    assert scanner.get_device_name('123') == 'foobar'
    assert scanner.get_device_name('234') == 'Nice Name'
    assert scanner.get_device_name('456') is None
    assert scanner.get_device_name('unknown') is None


def test_monitored_conditions():
    """Test the filtering of attributes."""
    ctrl = mock.MagicMock()
    fake_clients = [
        {'mac': '123',
         'hostname': 'foobar',
         'essid': 'barnet',
         'signal': -60,
         'last_seen': dt_util.as_timestamp(dt_util.utcnow()),
         'latest_assoc_time': 946684800.0},
        {'mac': '234',
         'name': 'Nice Name',
         'essid': 'barnet',
         'signal': -42,
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
        {'mac': '456',
         'hostname': 'wired',
         'essid': 'barnet',
         'last_seen': dt_util.as_timestamp(dt_util.utcnow())},
    ]
    ctrl.get_clients.return_value = fake_clients
    scanner = unifi.UnifiScanner(ctrl, DEFAULT_DETECTION_TIME, None,
                                 ['essid', 'signal', 'latest_assoc_time'])
    assert scanner.get_extra_attributes('123') == {
        'essid': 'barnet',
        'signal': -60,
        'latest_assoc_time': datetime(2000, 1, 1, 0, 0, tzinfo=dt_util.UTC)
    }
    assert scanner.get_extra_attributes('234') == {
        'essid': 'barnet',
        'signal': -42
    }
    assert scanner.get_extra_attributes('456') == {'essid': 'barnet'}