from unittest import TestCase

import pytest

from miio import Fan
from miio.fan import (MoveDirection, LedBrightness, FanStatus, FanException,
                      MODEL_FAN_V2, MODEL_FAN_V3, MODEL_FAN_SA1)
from .dummies import DummyDevice


class DummyFanV2(DummyDevice, Fan):
    def __init__(self, *args, **kwargs):
        self.model = MODEL_FAN_V2
        # This example response is just a guess. Please update!
        self.state = {
            'temp_dec': 232,
            'humidity': 46,
            'angle': 118,
            'speed': 298,
            'poweroff_time': 0,
            'power': 'on',
            'ac_power': 'off',
            'battery': 98,
            'angle_enable': 'off',
            'speed_level': 1,
            'natural_level': 0,
            'child_lock': 'off',
            'buzzer': 'on',
            'led_b': 1,
            'led': 'on',
            'natural_enable': None,
            'use_time': 0,
            'bat_charge': 'complete',
            'bat_state': None,
            'button_pressed': 'speed'
        }
        self.return_values = {
            'get_prop': self._get_state,
            'set_power': lambda x: self._set_state("power", x),
            'set_speed_level': lambda x: self._set_state("speed_level", x),
            'set_natural_level': lambda x: self._set_state("natural_level", x),
            'set_move': lambda x: True,
            'set_angle': lambda x: self._set_state("angle", x),
            'set_angle_enable': lambda x: self._set_state("angle_enable", x),
            'set_led_b': lambda x: self._set_state("led_b", x),
            'set_led': lambda x: self._set_state("led", x),
            'set_buzzer': lambda x: self._set_state("buzzer", x),
            'set_child_lock': lambda x: self._set_state("child_lock", x),
            'set_poweroff_time': lambda x: self._set_state("poweroff_time", x),
        }
        super().__init__(args, kwargs)


@pytest.fixture(scope="class")
def fanv2(request):
    request.cls.device = DummyFanV2()
    # TODO add ability to test on a real device


@pytest.mark.usefixtures("fanv2")
class TestFanV2(TestCase):
    def is_on(self):
        return self.device.status().is_on

    def state(self):
        return self.device.status()

    def test_on(self):
        self.device.off()  # ensure off
        assert self.is_on() is False

        self.device.on()
        assert self.is_on() is True

    def test_off(self):
        self.device.on()  # ensure on
        assert self.is_on() is True

        self.device.off()
        assert self.is_on() is False

    def test_status(self):
        self.device._reset_state()

        assert repr(self.state()) == repr(FanStatus(self.device.start_state))

        assert self.is_on() is True
        assert self.state().temperature == self.device.start_state["temp_dec"] / 10.0
        assert self.state().humidity == self.device.start_state["humidity"]
        assert self.state().angle == self.device.start_state["angle"]
        assert self.state().speed == self.device.start_state["speed"]
        assert self.state().delay_off_countdown == self.device.start_state["poweroff_time"]
        assert self.state().ac_power is (self.device.start_state["ac_power"] == 'on')
        assert self.state().battery == self.device.start_state["battery"]
        assert self.state().oscillate is (self.device.start_state["angle_enable"] == 'on')
        assert self.state().direct_speed == self.device.start_state["speed_level"]
        assert self.state().natural_speed == self.device.start_state["natural_level"]
        assert self.state().child_lock is (self.device.start_state["child_lock"] == 'on')
        assert self.state().buzzer is (self.device.start_state["buzzer"] == 'on')
        assert self.state().led_brightness == LedBrightness(self.device.start_state["led_b"])
        assert self.state().led is (self.device.start_state["led"] == "on")
        assert self.state().use_time == self.device.start_state["use_time"]
        assert self.state().battery_charge == self.device.start_state["bat_charge"]
        assert self.state().battery_state == self.device.start_state["bat_state"]
        assert self.state().button_pressed == self.device.start_state["button_pressed"]

    def test_status_without_led_brightness(self):
        self.device._reset_state()

        self.device.state["led_b"] = None
        assert self.state().led_brightness is None

    def test_status_without_battery_charge(self):
        self.device._reset_state()

        self.device.state["bat_charge"] = None
        assert self.state().battery_charge is None

    def test_status_without_battery_state(self):
        self.device._reset_state()

        self.device.state["bat_state"] = None
        assert self.state().battery_state is None

    def test_status_without_button_pressed(self):
        self.device._reset_state()

        self.device.state["button_pressed"] = None
        assert self.state().button_pressed is None

    def test_set_led(self):
        def led():
            return self.device.status().led

        self.device.set_led(True)
        assert led() is True

        self.device.set_led(False)
        assert led() is False

    def test_set_direct_speed(self):
        def direct_speed():
            return self.device.status().direct_speed

        self.device.set_direct_speed(0)
        assert direct_speed() == 0
        self.device.set_direct_speed(1)
        assert direct_speed() == 1
        self.device.set_direct_speed(100)
        assert direct_speed() == 100

        with pytest.raises(FanException):
            self.device.set_direct_speed(-1)

        with pytest.raises(FanException):
            self.device.set_direct_speed(101)

    def test_set_rotate(self):
        """The method is open-loop. The new state cannot be retrieved."""
        self.device.set_rotate(MoveDirection.Left)
        self.device.set_rotate(MoveDirection.Right)

    def test_set_angle(self):
        """This test doesn't implement the real behaviour of the device may be.

        The property "angle" doesn't provide the current setting.
        It's a measurement of the current position probably.
        """
        def angle():
            return self.device.status().angle

        self.device.set_angle(0)  # TODO: Is this value allowed?
        assert angle() == 0
        self.device.set_angle(1)  # TODO: Is this value allowed?
        assert angle() == 1
        self.device.set_angle(30)
        assert angle() == 30
        self.device.set_angle(60)
        assert angle() == 60
        self.device.set_angle(90)
        assert angle() == 90
        self.device.set_angle(120)
        assert angle() == 120

        with pytest.raises(FanException):
            self.device.set_angle(-1)

        with pytest.raises(FanException):
            self.device.set_angle(121)

    def test_set_oscillate(self):
        def oscillate():
            return self.device.status().oscillate

        self.device.set_oscillate(True)
        assert oscillate() is True

        self.device.set_oscillate(False)
        assert oscillate() is False

    def test_set_led_brightness(self):
        def led_brightness():
            return self.device.status().led_brightness

        self.device.set_led_brightness(LedBrightness.Bright)
        assert led_brightness() == LedBrightness.Bright

        self.device.set_led_brightness(LedBrightness.Dim)
        assert led_brightness() == LedBrightness.Dim

        self.device.set_led_brightness(LedBrightness.Off)
        assert led_brightness() == LedBrightness.Off

    def test_set_buzzer(self):
        def buzzer():
            return self.device.status().buzzer

        self.device.set_buzzer(True)
        assert buzzer() is True

        self.device.set_buzzer(False)
        assert buzzer() is False

    def test_set_child_lock(self):
        def child_lock():
            return self.device.status().child_lock

        self.device.set_child_lock(True)
        assert child_lock() is True

        self.device.set_child_lock(False)
        assert child_lock() is False

    def test_delay_off(self):
        def delay_off_countdown():
            return self.device.status().delay_off_countdown

        self.device.delay_off(100)
        assert delay_off_countdown() == 100
        self.device.delay_off(200)
        assert delay_off_countdown() == 200

        with pytest.raises(FanException):
            self.device.delay_off(-1)

        with pytest.raises(FanException):
            self.device.delay_off(0)


class DummyFanV3(DummyDevice, Fan):
    def __init__(self, *args, **kwargs):
        self.model = MODEL_FAN_V3
        self.state = {
            'temp_dec': 232,
            'humidity': 46,
            'angle': 118,
            'speed': 298,
            'poweroff_time': 0,
            'power': 'on',
            'ac_power': 'off',
            'battery': 98,
            'angle_enable': 'off',
            'speed_level': 1,
            'natural_level': 0,
            'child_lock': 'off',
            'buzzer': 'on',
            'led_b': 1,
            'led': None,
            'natural_enable': None,
            'use_time': 0,
            'bat_charge': 'complete',
            'bat_state': None,
            'button_pressed': 'speed'
        }
        self.return_values = {
            'get_prop': self._get_state,
            'set_power': lambda x: self._set_state("power", x),
            'set_speed_level': lambda x: self._set_state("speed_level", x),
            'set_natural_level': lambda x: self._set_state("natural_level", x),
            'set_move': lambda x: True,
            'set_angle': lambda x: self._set_state("angle", x),
            'set_angle_enable': lambda x: self._set_state("angle_enable", x),
            'set_led_b': lambda x: self._set_state("led_b", x),
            'set_led': lambda x: self._set_state("led", x),
            'set_buzzer': lambda x: self._set_state("buzzer", x),
            'set_child_lock': lambda x: self._set_state("child_lock", x),
            'set_poweroff_time': lambda x: self._set_state("poweroff_time", x),
        }
        super().__init__(args, kwargs)


@pytest.fixture(scope="class")
def fanv3(request):
    request.cls.device = DummyFanV3()
    # TODO add ability to test on a real device


@pytest.mark.usefixtures("fanv3")
class TestFanV3(TestCase):
    def is_on(self):
        return self.device.status().is_on

    def state(self):
        return self.device.status()

    def test_on(self):
        self.device.off()  # ensure off
        assert self.is_on() is False

        self.device.on()
        assert self.is_on() is True

    def test_off(self):
        self.device.on()  # ensure on
        assert self.is_on() is True

        self.device.off()
        assert self.is_on() is False

    def test_status(self):
        self.device._reset_state()

        assert repr(self.state()) == repr(FanStatus(self.device.start_state))

        assert self.is_on() is True
        assert self.state().temperature == self.device.start_state["temp_dec"] / 10.0
        assert self.state().humidity == self.device.start_state["humidity"]
        assert self.state().angle == self.device.start_state["angle"]
        assert self.state().speed == self.device.start_state["speed"]
        assert self.state().delay_off_countdown == self.device.start_state["poweroff_time"]
        assert self.state().ac_power is (self.device.start_state["ac_power"] == 'on')
        assert self.state().battery == self.device.start_state["battery"]
        assert self.state().oscillate is (self.device.start_state["angle_enable"] == 'on')
        assert self.state().direct_speed == self.device.start_state["speed_level"]
        assert self.state().natural_speed == self.device.start_state["natural_level"]
        assert self.state().child_lock is (self.device.start_state["child_lock"] == 'on')
        assert self.state().buzzer is (self.device.start_state["buzzer"] == 'on')
        assert self.state().led_brightness == LedBrightness(self.device.start_state["led_b"])
        assert self.state().led is None
        assert self.state().use_time == self.device.start_state["use_time"]
        assert self.state().battery_charge == self.device.start_state["bat_charge"]
        assert self.state().battery_state == self.device.start_state["bat_state"]
        assert self.state().button_pressed == self.device.start_state["button_pressed"]

    def test_status_without_led_brightness(self):