homebridge-purpleair-sensor
Version:
Monitor air quality using PurpleAir.
87 lines • 4.88 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.PurpleAirPlatform = void 0;
const platformAccessory_1 = require("./platformAccessory");
const settings_1 = require("./settings");
/**
* HomebridgePlatform
* This class is the main constructor for your plugin, this is where you should
* parse the user config and discover/register accessories with Homebridge.
*/
class PurpleAirPlatform {
constructor(log, config, api) {
this.log = log;
this.config = config;
this.api = api;
this.Service = this.api.hap.Service;
this.Characteristic = this.api.hap.Characteristic;
// this is used to track restored cached accessories
this.accessories = [];
this.log.debug('Finished initializing platform:', this.config.name);
// When this event is fired it means Homebridge has restored all cached accessories from disk.
// Dynamic Platform plugins should only register new accessories after this event was fired,
// in order to ensure they weren't added to homebridge already. This event can also be used
// to start discovery of new accessories.
this.api.on('didFinishLaunching', () => {
log.debug('Executed didFinishLaunching callback');
this.discoverDevices();
});
}
/**
* This function is invoked when homebridge restores cached accessories from disk at startup.
* It should be used to setup event handlers for characteristics and update respective values.
*/
configureAccessory(accessory) {
this.log.info('Loading accessory from cache:', accessory.displayName);
// add the restored accessory to the accessories cache so we can track if it has already been registered
this.accessories.push(accessory);
}
/**
* This is an example method showing how to register discovered accessories.
* Accessories must only be registered once, previously created accessories
* must not be registered again to prevent "duplicate UUID" errors.
*/
discoverDevices() {
const registeredAccessories = [];
// Loop through the platform config and register each sensor as an accessory
const sensors = this.config.sensors || [];
for (const sensor of sensors) {
this.log.debug('Configuring sensor:', JSON.stringify(sensor));
const uuid = this.api.hap.uuid.generate(sensor.name);
registeredAccessories.push(uuid);
// see if an accessory with the same uuid has already been registered and restored from
// the cached devices we stored in the `configureAccessory` method above
const existingAccessory = this.accessories.find(accessory => accessory.UUID === uuid);
if (existingAccessory) {
// the accessory already exists
this.log.info('Restoring existing accessory from cache:', existingAccessory.displayName);
// if you need to update the accessory.context then you should run `api.updatePlatformAccessories`. eg.:
existingAccessory.context.sensor = sensor;
this.api.updatePlatformAccessories([existingAccessory]);
// create the accessory handler for the restored accessory
new platformAccessory_1.PurpleAirPlatformAccessory(this, existingAccessory);
}
else {
// the accessory does not yet exist, so we need to create it
this.log.info('Adding new accessory:', sensor.name);
// create a new accessory
const accessory = new this.api.platformAccessory(sensor.name, uuid);
// store a copy of the device object in the `accessory.context`
// the `context` property can be used to store any data about the accessory you may need
accessory.context.sensor = sensor;
// create the accessory handler for the newly created accessory
new platformAccessory_1.PurpleAirPlatformAccessory(this, accessory);
// link the accessory to your platform
this.api.registerPlatformAccessories(settings_1.PLUGIN_NAME, settings_1.PLATFORM_NAME, [accessory]);
}
}
// Remove any existing accessories that are no longer configured
const accessoriesToRemove = this.accessories.filter(accessory => !registeredAccessories.includes(accessory.UUID));
if (accessoriesToRemove.length > 0) {
this.log.info(`Unregistering ${accessoriesToRemove.length} accessories no longer in config file`);
this.api.unregisterPlatformAccessories(settings_1.PLUGIN_NAME, settings_1.PLATFORM_NAME, accessoriesToRemove);
}
}
}
exports.PurpleAirPlatform = PurpleAirPlatform;
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