import data from './stub/data';
import logger from './stub/logger';
import MQTT from './stub/mqtt';
import zigbeeHerdsman from './stub/zigbeeHerdsman';

import utils from '../lib/util/utils';
import * as settings from '../lib/util/settings';
import Controller from '../lib/controller';
import Availability from '../lib/extension/availability';
import flushPromises from './lib/flushPromises';
import stringify from 'json-stable-stringify-without-jsonify';

const mocks = [MQTT.publish, logger.warning, logger.debug];
const devices = zigbeeHerdsman.devices;
zigbeeHerdsman.returnDevices.push(
    ...[devices.bulb_color.ieeeAddr, devices.bulb_color_2.ieeeAddr, devices.coordinator.ieeeAddr, devices.remote.ieeeAddr])

describe('Availability', () => {
    let controller;

    let resetExtension = async () => {
        await controller.enableDisableExtension(false, 'Availability');
        await controller.enableDisableExtension(true, 'Availability');
    }

    const advancedTime = async (value) => {
        jest.setSystemTime(Date.now() + value);
        jest.advanceTimersByTime(value);
        await flushPromises();
    }

    beforeAll(async () => {
        jest.spyOn(utils, 'sleep').mockImplementation(async (seconds) => {});
        jest.useFakeTimers('modern');
        settings.reRead();
        settings.set(['availability'], true);
        controller = new Controller(jest.fn(), jest.fn());
        await controller.start();
        await flushPromises();
    });

    beforeEach(async () => {
        jest.useFakeTimers('modern').setSystemTime(utils.minutes(1));
        data.writeDefaultConfiguration();
        settings.reRead();
        settings.set(['availability'], true);
        settings.set(['devices', devices.bulb_color_2.ieeeAddr, 'availability'], false);
        Object.values(devices).forEach(d => d.lastSeen = utils.minutes(1));
        mocks.forEach((m) => m.mockClear());
        await resetExtension();
        Object.values(devices).forEach((d) => d.ping.mockClear());
    });

    afterEach(async () => {
        Object.values(devices).forEach(d => d.lastSeen = utils.minutes(1));
    })

    afterAll(async () => {
        jest.useRealTimers();
    })

    it('Should publish availability on startup for device where it is enabled for', async () => {
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/bulb_color/availability',
            'online', {retain: true, qos: 1}, expect.any(Function));
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/remote/availability',
            'online', {retain: true, qos: 1}, expect.any(Function));
        expect(MQTT.publish).not.toHaveBeenCalledWith('zigbee2mqtt/bulb_color_2/availability',
            'online', {retain: true, qos: 1}, expect.any(Function));
    });

    it('Should publish offline for active device when not seen for 10 minutes', async () => {
        MQTT.publish.mockClear();

        await advancedTime(utils.minutes(5));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);

        await advancedTime(utils.minutes(7));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(1);
        expect(devices.bulb_color.ping).toHaveBeenNthCalledWith(1, true);
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/bulb_color/availability',
            'offline', {retain: true, qos: 1}, expect.any(Function));
    });

    it('Shouldnt do anything for a device when availability: false is set for device', async () => {
        MQTT.publish.mockClear();
        await zigbeeHerdsman.events.lastSeenChanged({device: devices.bulb_color_2}); // Coverage satisfaction

        await advancedTime(utils.minutes(12));
        expect(devices.bulb_color_2.ping).toHaveBeenCalledTimes(0);
    });

    it('Should publish offline for passive device when not seen for 25 hours', async () => {
        MQTT.publish.mockClear();
        await advancedTime(utils.hours(26));
        expect(devices.remote.ping).toHaveBeenCalledTimes(0);
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/remote/availability',
            'offline', {retain: true, qos: 1}, expect.any(Function));
    });

    it('Should reset ping timer when device last seen changes for active device', async () => {
        MQTT.publish.mockClear();

        await advancedTime(utils.minutes(5));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);

        await zigbeeHerdsman.events.lastSeenChanged({device: devices.bulb_color});

        await advancedTime(utils.minutes(7));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);

        await advancedTime(utils.minutes(10));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(1);
        expect(devices.bulb_color.ping).toHaveBeenNthCalledWith(1, true);
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/bulb_color/availability',
            'offline', {retain: true, qos: 1}, expect.any(Function));
    });

    it('Should ping again when first ping fails', async () => {
        MQTT.publish.mockClear();

        await advancedTime(utils.minutes(5));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);

        await zigbeeHerdsman.events.lastSeenChanged({device: devices.bulb_color});

        await advancedTime(utils.minutes(7));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);

        devices.bulb_color.ping.mockImplementationOnce(() => {throw new Error('failed')});
        devices.bulb_color.lastSeen = Date.now() + utils.minutes(10);
        await advancedTime(utils.minutes(10));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(2);
        expect(devices.bulb_color.ping).toHaveBeenNthCalledWith(1, true);
        expect(devices.bulb_color.ping).toHaveBeenNthCalledWith(2, false);
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/bulb_color/availability',
            'offline', {retain: true, qos: 1}, expect.any(Function));
    });

    it('Should reset ping timer when device last seen changes for passive device', async () => {
        MQTT.publish.mockClear();

        await advancedTime(utils.hours(24));
        expect(devices.remote.ping).toHaveBeenCalledTimes(0);

        await zigbeeHerdsman.events.lastSeenChanged({device: devices.remote});

        await advancedTime(utils.hours(25));
        expect(devices.remote.ping).toHaveBeenCalledTimes(0);

        devices.remote.ping.mockImplementationOnce(() => {throw new Error('failed')});
        await advancedTime(utils.hours(3));
        expect(devices.remote.ping).toHaveBeenCalledTimes(0);
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/remote/availability',
            'offline', {retain: true, qos: 1}, expect.any(Function));
    });

    it('Should immediately mark device as online when it lastSeen changes', async () => {
        MQTT.publish.mockClear();

        await advancedTime(utils.minutes(15));
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/bulb_color/availability',
            'offline', {retain: true, qos: 1}, expect.any(Function));

        devices.bulb_color.lastSeen = Date.now();
        await zigbeeHerdsman.events.lastSeenChanged({device: devices.bulb_color});
        await flushPromises();
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/bulb_color/availability',
            'online', {retain: true, qos: 1}, expect.any(Function));
    });

    it('Should allow to change availability timeout via device options', async () => {
        settings.set(['devices', '0x000b57fffec6a5b3', 'availability'], {timeout: 40});
        await resetExtension();
        MQTT.publish.mockClear();

        await advancedTime(utils.minutes(25));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);

        await advancedTime(utils.minutes(17));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(1);
    });

    it('Should not ping disabled devices', async () => {
        settings.set(['devices', devices.bulb_color.ieeeAddr, 'disabled'], true);
        await resetExtension();
        MQTT.publish.mockClear();

        await advancedTime(utils.minutes(15));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);
    });

    it('Should allow to change availability timeout via avaiability options', async () => {
        settings.set(['availability'], {active: {timeout: 30}});
        await resetExtension();
        MQTT.publish.mockClear();

        await advancedTime(utils.minutes(25));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);

        await advancedTime(utils.minutes(7));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(1);
    });

    it('Should stop pinging device when it leaves', async () => {
        await resetExtension();
        MQTT.publish.mockClear();

        await advancedTime(utils.minutes(9));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);

        await zigbeeHerdsman.events.deviceLeave({ieeeAddr: devices.bulb_color.ieeeAddr});
        await flushPromises();

        await advancedTime(utils.minutes(3));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);
    });

    it('Should stop pinging device when it is removed', async () => {
        await resetExtension();
        MQTT.publish.mockClear();

        await advancedTime(utils.minutes(9));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);

        MQTT.events.message('zigbee2mqtt/bridge/request/device/remove', stringify({id: "bulb_color"}));
        await flushPromises();

        await advancedTime(utils.minutes(3));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);
    });

    it('Should allow to be disabled', async () => {
        settings.set(['availability'], false);
        await resetExtension();

        await advancedTime(utils.minutes(12));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);
    });

    it('Should to enable availability for just one device', async () => {
        settings.set(['availability'], false);
        settings.set(['devices', devices.bulb_color.ieeeAddr, 'availability'], true);

        await resetExtension();
        MQTT.publish.mockClear();

        await advancedTime(utils.minutes(11));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(1);
    });

    it('Should retrieve device state when it reconnects', async () => {
        MQTT.publish.mockClear();

        const device = controller.zigbee.resolveEntity(devices.bulb_color.ieeeAddr);
        controller.state.set(device, {state: 'OFF'})

        const endpoint = devices.bulb_color.getEndpoint(1);
        endpoint.read.mockClear();

        await zigbeeHerdsman.events.deviceAnnounce({device: devices.bulb_color});
        await flushPromises();
        await advancedTime(utils.seconds(1));
        await zigbeeHerdsman.events.deviceAnnounce({device: devices.bulb_color});
        await flushPromises();

        expect(endpoint.read).toHaveBeenCalledTimes(0);
        await advancedTime(utils.seconds(2));

        expect(endpoint.read).toHaveBeenCalledTimes(1);
        expect(endpoint.read).toHaveBeenCalledWith('genOnOff', ['onOff']);

        endpoint.read.mockClear();
        await zigbeeHerdsman.events.deviceAnnounce({device: devices.bulb_color});
        await flushPromises();
        endpoint.read.mockImplementationOnce(() => {throw new Error('')});
        await advancedTime(utils.seconds(3));
        expect(endpoint.read).toHaveBeenCalledTimes(1);
    });

    it('Should republish availability when device is renamed', async () => {
        MQTT.publish.mockClear();

        MQTT.events.message('zigbee2mqtt/bridge/request/device/rename', stringify({from: 'bulb_color', to: 'bulb_new_name'}));
        await flushPromises();

        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/bulb_color/availability',
            null, {retain: true, qos: 1}, expect.any(Function));
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/bulb_new_name/availability',
            'online', {retain: true, qos: 1}, expect.any(Function));
        await advancedTime(utils.hours(12));
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/bulb_new_name/availability',
            'offline', {retain: true, qos: 1}, expect.any(Function));
    });

    it('Should publish availability payload in JSON format', async () => {
        settings.set(['advanced', 'legacy_availability_payload'], false);
        await resetExtension();
        MQTT.publish.mockClear();
        await advancedTime(utils.hours(26));
        expect(devices.remote.ping).toHaveBeenCalledTimes(0);
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/remote/availability',
            stringify({state: 'offline'}), {retain: true, qos: 1}, expect.any(Function));
    });

    it('Deprecated - should allow to block via advanced.availability_blocklist', async () => {
        settings.set(['advanced', 'availability_blocklist'], [devices.bulb_color.ieeeAddr]);
        await resetExtension();

        await advancedTime(utils.minutes(12));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);
    });

    it('Deprecated - should allow to pass certain devices via availability_passlist', async () => {
        settings.set(['advanced', 'availability_passlist'], [devices.bulb_color_2.ieeeAddr]);
        settings.changeEntityOptions(devices.bulb_color_2.ieeeAddr, {availability: null});
        await resetExtension();

        await advancedTime(utils.minutes(12));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(0);
        expect(devices.bulb_color_2.ping).toHaveBeenCalledTimes(1);
    });

    it('Deprecated - should allow to enable via availability_timeout', async () => {
        settings.set(['availability'], false);
        settings.set(['advanced', 'availability_timeout'], 60);
        await resetExtension();

        await advancedTime(utils.minutes(12));
        expect(devices.bulb_color.ping).toHaveBeenCalledTimes(1);
    });

    it('Should publish availability for groups', async () => {
        settings.set(['devices', devices.bulb_color_2.ieeeAddr, 'availability'], true);
        await resetExtension();
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/group_tradfri_remote/availability',
            'online', {retain: true, qos: 1}, expect.any(Function));
        MQTT.publish.mockClear();
        await advancedTime(utils.minutes(12));
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/group_tradfri_remote/availability',
            'offline', {retain: true, qos: 1}, expect.any(Function));
        MQTT.publish.mockClear();
        devices.bulb_color_2.lastSeen = Date.now();
        await zigbeeHerdsman.events.lastSeenChanged({device: devices.bulb_color_2});
        await flushPromises();
        expect(MQTT.publish).toHaveBeenCalledWith('zigbee2mqtt/group_tradfri_remote/availability',
            'online', {retain: true, qos: 1}, expect.any(Function));
    });

    it('Should clear the ping queue on stop', async () => {
        const availability = controller.extensions.find((extension) => extension instanceof Availability);
        const publishAvailabilitySpy = jest.spyOn(availability, 'publishAvailability');

        devices.bulb_color.zh = { ping: jest.fn().mockImplementation(() => new Promise((resolve) => setTimeout(resolve, 1000)))};
        availability.addToPingQueue(devices.bulb_color);
        availability.addToPingQueue(devices.bulb_color_2);

        await availability.stop();
        await advancedTime(utils.minutes(1));

        expect(availability.pingQueue).toEqual([]);
        // Validate the stop-interrupt implicitly by checking that it prevents further function invocations
        expect(publishAvailabilitySpy).not.toHaveBeenCalled();
    });

    it('Should prevent instance restart', async () => {
        const availability = controller.extensions.find((extension) => extension instanceof Availability);

        await availability.stop();

        await expect(() => availability.start()).rejects.toThrowError();
    });
});