alarm-controller/functions.js

const db = require("./db");
const mqttClient = require("./mqtt");

const StateManager = require("./StateManager");
const { Armed, Disarmed, Triggered, Arming, Disarming } = require("./states");

function insertEvent(deviceId, eventType) {
	db.query(`
		INSERT INTO events (deviceId, type)
				VALUES ($1, $2)
		`, [
		deviceId,
		eventType
	]);
}

function triggerAlarm(deviceId) {
	mqttClient.publish("alarm/state", JSON.stringify({ status: Triggered }));
	StateManager.alarmStatus = Triggered;
	console.log("Alarm has been triggered", deviceId);
	insertEvent(deviceId, Triggered);
}

function disarmingAlarm(deviceId) {
	mqttClient.publish("alarm/state", JSON.stringify({ status: Disarming }));
	StateManager.alarmStatus = Disarming;
	console.log("Alarm has been set to Disarming");
	clearTimeout(timer);
	timer = setTimeout(disarmingTimerRunout, 10000, deviceId);
	insertEvent(deviceId, Disarming);
}

function disarmingTimerRunout(deviceId) {
	if (StateManager.alarmStatus === Disarming) {
		disarmAlarm(deviceId);
	}
}

function armAlarm(deviceId) {
	mqttClient.publish("alarm/state", JSON.stringify({ status: Arming }));
	StateManager.alarmStatus = Arming;
	console.log("Alarm has been set to Arming");
	clearTimeout(timer);
	timer = setTimeout(armingTimerRunout, 10000, deviceId);
	insertEvent(deviceId, Arming);
}

function armingTimerRunout(deviceId) {
	if (StateManager.alarmStatus === Arming) {
		mqttClient.publish("alarm/state", JSON.stringify({ status: Armed }));
		mqttClient.publish("door/lock", JSON.stringify({ deviceId: 2, lock: true }));
		StateManager.alarmStatus = Armed;
		console.log("Alarm has been set to Armed");
		insertEvent(deviceId, Armed);
	}
}

function disarmAlarm(deviceId) {
	mqttClient.publish("alarm/state", JSON.stringify({ status: Disarmed }));
	mqttClient.publish("door/lock", JSON.stringify({ deviceId: 2, lock: false }));
	StateManager.alarmStatus = Disarmed;
	clearTimeout(timer);
	console.log("Alarm has been set to Disarmed");
	insertEvent(deviceId, Disarmed);
}

let timer;

module.exports = {
	insertEvent,
	triggerAlarm,
	disarmingAlarm,
	disarmingTimerRunout,
	armAlarm,
	armingTimerRunout,
	disarmAlarm
};