@hermannp/node-red-getproduction-fusionsolar/getProduction_FusionSolar.js

Get Solar electricity production amount of Huawei FusionSolar.

"use strict";

var request = require('request');

module.exports = function(RED) {
    function GetProductionFusionSolarNode(config) {
        RED.nodes.createNode(this,config);
		this.username = config.username;
		this.systemcode = config.systemcode;
		this.totalpower = config.totalpower;
		this.daypower = config.daypower;
		this.monthpower = config.monthpower;
		this.dayincome = config.dayincome;
        var node = this;

		node.on('input', function(msg) {

			var xsrftoken = '';
			var stationcode = '';
			var sumTotalPower = 0;
			var sumDayPower = 0;
			var sumMonthPower = 0;
			var sumDayIncome = 0;
			if (!node.totalpower && !node.daypower && !node.monthpower && !node.dayincome) {
				msg.payload = "Error: At least one output option must be selected.";
				node.send(msg);
				return;
			}
			
			const optionsForAuthentication = {
				url: 'https://eu5.fusionsolar.huawei.com/thirdData/login',
				json: true,
				body: {
					userName: node.username,
					systemCode: node.systemcode
				}
			};

			request.post(optionsForAuthentication, (err, res, body) => {
				if (err) {
					return console.log(err);
				}
				var jsonres = JSON.stringify(res);
				var jsonobj = JSON.parse(jsonres);
				xsrftoken = jsonobj.headers["xsrf-token"];
				if (xsrftoken == undefined) {
					msg.payload = "Error: Invalid credentials for openAPI login";
					node.send(msg);
					return;
				}

				const optionsForGetStationList = {
					url: 'https://eu5.fusionsolar.huawei.com/thirdData/getStationList',
					json: true,
					headers: {
						'Content-Type': 'application/json',
						'XSRF-token': xsrftoken
					}
				};
				
				request.post(optionsForGetStationList, (err, res, body) => {
					if (err) {
						return console.log(err);
					}
					var jsonres = JSON.stringify(res);
					jsonobj = JSON.parse(jsonres);
					jsonobj = jsonobj.body.data;
					for (let i=0; i<jsonobj.length; i++) {
						let oneobj = jsonobj[i];
						stationcode = stationcode.concat(oneobj.stationCode + ",");
					}
					stationcode = stationcode.substring(0, stationcode.length-1);
					const optionsForGetRealKPI = {
						url: 'https://eu5.fusionsolar.huawei.com/thirdData/getStationRealKpi',
						json: true,
						headers: {
							'Content-Type': 'application/json',
							'XSRF-token': xsrftoken
						},
						body: {
							'stationCodes': stationcode
						}
					};
					
					request.post(optionsForGetRealKPI, (err, res, body) => {
						if (err) {
							return console.log(err);
						}
						var jsonres = JSON.stringify(res);
						jsonobj = JSON.parse(jsonres);
						sumTotalPower = sumTotalPower + jsonobj.body.data[0].dataItemMap.total_power;
						sumDayPower = sumDayPower + jsonobj.body.data[0].dataItemMap.day_power;
						sumMonthPower = sumMonthPower + jsonobj.body.data[0].dataItemMap.month_power;
						sumDayIncome = sumDayIncome + jsonobj.body.data[0].dataItemMap.day_income;

						var resultJson = {
							"total_power": sumTotalPower,
							"day_power": sumDayPower,
							"month_power": sumMonthPower, 
							"day_income": sumDayIncome
						};
						var resultOutput = JSON.parse(JSON.stringify(resultJson));
						if (!node.totalpower) delete resultOutput["total_power"];
						if (!node.daypower) delete resultOutput["day_power"];
						if (!node.monthpower) delete resultOutput["month_power"];
						if (!node.dayincome) delete resultOutput["day_income"];
						msg.payload = resultOutput;

						if (node.totalpower && !node.daypower && !node.monthpower && !node.dayincome) msg.payload = sumTotalPower;
						if (!node.totalpower && node.daypower && !node.monthpower && !node.dayincome) msg.payload = sumDayPower;
						if (!node.totalpower && !node.daypower && node.monthpower && !node.dayincome) msg.payload = sumMonthPower;
						if (!node.totalpower && !node.daypower && !node.monthpower && node.dayincome) msg.payload = sumDayIncome;

						node.send(msg);
					});
				});
			});
		 });
    }
    RED.nodes.registerType("getProduction_FusionSolar", GetProductionFusionSolarNode);
}