TS0504B with white channel support

TS0504B.js

const tz = require('zigbee-herdsman-converters/converters/toZigbee');
const extend = require('zigbee-herdsman-converters/lib/extend');
const libColor = require('zigbee-herdsman-converters/lib/color');

const tzLocal = {
    light_color_white: {
        key: ['color'],
        convertSet: async (entity, key, value, meta) => {
            const color = libColor.Color.fromConverterArg(value);
            console.log(color);
            const enableWhite =
                (color.isRGB() && (color.rgb.red === 1 && color.rgb.green === 1 && color.rgb.blue === 1)) ||
                // Zigbee2MQTT frontend white value
                (color.isXY() && (color.xy.x === 0.3125 || color.xy.y === 0.32894736842105265)) ||
                // Home Assistant white color picker value
                (color.isXY() && (color.xy.x === 0.323 || color.xy.y === 0.329));

            if (enableWhite) {
                await entity.command('lightingColorCtrl', 'tuyaRgbMode', {enable: false});
                const newState = {color_mode: 'xy'};
                if (color.isXY()) {
                    newState.color = color.xy;
                } else {
                    newState.color = color.rgb.gammaCorrected().toXY().rounded(4);
                }
                return {state: libColor.syncColorState(newState, meta.state, entity, meta.options, meta.logger)};
            } else {
                return await tz.light_color.convertSet(entity, key, value, meta);
            }
        },
    },
};

const toZigbee = extend.light_onoff_brightness_color().toZigbee;
toZigbee[toZigbee.indexOf(tz.light_color)] = tzLocal.light_color_white;

const definition = {
    fingerprint: [{modelID: 'TS0504B', manufacturerName: '_TZ3000_ukuvyhaa'}],
    model: 'TS0504B',
    vendor: 'TuYa',
    description: 'Zigbee RGBW light (CUSTOM)',
    extend: extend.light_onoff_brightness_color(),
    toZigbee: toZigbee,
    meta: {applyRedFix: true},
};

module.exports = definition;