thermostat-pi-dht/lib/updateRemoteThermostatSetpoint.js

A Node.js framework (standalone app + lib) to control a heating system with a Raspberry Pi using DHT11 or DHT22/AM2302 sensors and GPIO actuators.

"use strict";
// Project: thermostat-pi-dht
// File: updateRemoteThermostatSetpoint.ts
//
// Copyright 2021 Henning Kerstan
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
Object.defineProperty(exports, "__esModule", { value: true });
exports.updateRemoteThermostatSetpoint = void 0;
const hmac_authenticated_payload_1 = require("@henningkerstan/hmac-authenticated-payload");
const httpPostJSON_1 = require("./httpPostJSON");
const ThermostatSetpoint_1 = require("./ThermostatSetpoint");
async function updateRemoteThermostatSetpoint(options) {
    // create ThermostatSetpoint object
    const thermostatSetpoint = new ThermostatSetpoint_1.ThermostatSetpoint();
    thermostatSetpoint.name = options.thermostatName;
    thermostatSetpoint.setpoint = options.setpoint;
    // enclose the ThermostatSetpoint in HMACAuthenticatedData
    let ad = hmac_authenticated_payload_1.HMACAuthenticatedPayload.create(options.hmacKey, thermostatSetpoint);
    // post the stringified data and wait for the response
    const result = await (0, httpPostJSON_1.httpPostJSON)({
        host: options.host,
        port: options.port,
        path: '/' + options.endpoint,
        json: JSON.stringify(ad),
    });
    // parse the result as JSON
    // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
    const resultObject = JSON.parse(result);
    // create an HMACAuthenticatedData from the received result
    ad = new hmac_authenticated_payload_1.HMACAuthenticatedPayload(resultObject.payload, resultObject.nonce, resultObject.hmac);
    // validate the hmac
    if (!ad.validate(options.hmacKey)) {
        return Promise.reject();
    }
    // interpret the received data; extract data for the updated thermostat
    const thermostatData = { name: options.thermostatName };
    // depending on the endpoint, the received data will be different
    switch (options.endpoint) {
        case 'config.json': {
            const configuration = ad.payload;
            for (const t of configuration.thermostats) {
                if (t.name === options.thermostatName) {
                    thermostatData.setpoint = t.setpoint;
                    return thermostatData;
                }
            }
            break;
        }
        case 'data.json': {
            const thermostats = ad.payload;
            for (const t of thermostats) {
                if (t.name === options.thermostatName) {
                    thermostatData.setpoint = t.setpoint;
                    thermostatData.timestamp = t.timestamp;
                    thermostatData.temperature = t.temperature;
                    thermostatData.humidity = t.humidity;
                    thermostatData.heatingIsOn = t.heatingIsOn;
                    return thermostatData;
                }
            }
        }
    }
    return Promise.reject();
}
exports.updateRemoteThermostatSetpoint = updateRemoteThermostatSetpoint;
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