raspberrypi_nodejs_projects/modules/heating.js

const http = require('http')
const globalVars = require('../libs/globalVars')
const led = require('../libs/led')
const common = require('../libs/common')
const lcd = require('../libs/lcd')
const logger = require('perfect-logger');

module.exports = {

    getStatus: (page) => {
        var rest_options = {
            host: '192.168.4.5',
            port: 2020,
            path: '/heating/status',
            method: 'GET'
        };
        logger.info('heating request')
        request = http.request(rest_options, function (response) {
            var content = "";

            // Handle data chunks
            response.on('data', function (chunk) {
                content += chunk;
            });

            // Once we're done streaming the response, parse it as json.
            response.on('end', async function () {
                var data = JSON.parse(content);
                let heatingOn = data.heatingOn

                var time = await common.nextEvent(data.nextScheduleEventUtcTime)

                globalVars.heatingNextEvent = time

                let m = await common.time(data.nextScheduleEventUtcTime)

                if (globalVars.heatingOn === "" || globalVars.heatingOn === "error") {
                    if (heatingOn === 'true') {
                        globalVars.heatingOn = heatingOn
                        lcd.heatingPageOne('On', data.measuredRoomTemp, data.lastTimerSetPoint, globalVars.heatingNextEvent)
                        led.set('red')
                    } else {
                        globalVars.heatingOn = heatingOn
                        lcd.heatingPageOne('Off', data.measuredRoomTemp, data.lastTimerSetPoint, globalVars.heatingNextEvent)
                        led.set('blue')
                    }
                } else {
                    if (heatingOn === 'true') {
                        globalVars.heatingOn = heatingOn
                        lcd.heatingPageOne('On', data.measuredRoomTemp, data.lastTimerSetPoint, globalVars.heatingNextEvent)
                        led.set('red')
                    } else {
                        if (page === 1) {
                            await lcd.heatingPageOne('Off', globalVars.heatingNextEvent)
                        } else {
                            await lcd.heatingPageTwo(data.measuredRoomTemp, data.lastTimerSetPoint)
                        }
                        globalVars.heatingOn = heatingOn
                        led.set('blue')
                    }
                }
            });
        });
        // Report errors
        request.on('error', function (error) {
            led.set('green')
            lcd.heatingStatus('Error No Data')
            globalVars.heatingOn = 'error'
        });
        request.end();
    }
}