65 lines
1.9 KiB
JavaScript
65 lines
1.9 KiB
JavaScript
"use strict";
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import mqtt from 'async-mqtt';
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class TTNAppServer {
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get connection_string() {
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return `${this.settings.ttn.tls ? "mqtts" : "mqtt"}://${this.settings.ttn.host}:${this.settings.ttn.port}/`
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}
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// Destructure the awilix container
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constructor({ settings, ansi, MessageHandler, log }) {
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this.settings = settings;
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/** @type {Ansi} */
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this.a = ansi;
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/** @type {Log} */
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this.log = log;
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/** @type {MessageHandler} */
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this.message_handler = MessageHandler;
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}
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async run() {
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// 1: Sanity checks
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if(this.settings.ttn.app_id == "CHANGE_THIS" || this.settings.ttn.access_key == "CHANGE_THIS") {
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this.log.error(`Error: No TTN app id specified. Try filling in the required values in settings.toml. If they don't exist yet, try using server/settings.default.toml as a reference.`);
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return false;
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}
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if(this.settings.ttn.devices.includes("CHANGE_THIS")) {
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this.log.error(`Error: No device names specified. Try filling in the required values in settings.toml. If they don't exist yet, try using server/settings.default.toml as a reference.`);
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return false;
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}
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// 2: Connect
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this.ttn_client = await this.connect();
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this.ttn_client.on("message", this.handle_message.bind(this));
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this.log.log(`Connected to ${this.connection_string}`);
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// 3: Subscribe
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let result = await this.ttn_client.subscribe(this.settings.ttn.devices.map(
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(device_name) => `${this.settings.ttn.app_id}/devices/${device_name}/up`
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));
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this.log.log(`Subscribed to ${result.map((el) => el.topic).join(", ")}`);
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}
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connect() {
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return new Promise((resolve, _reject) => {
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let client = mqtt.connect(this.connection_string, {
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username: this.settings.ttn.app_id,
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password: this.settings.ttn.access_key
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});
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client.once("connect", () => resolve(client));
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});
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}
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async handle_message(topic, message_buffer) {
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console.log(arguments);
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// await this.message_handler.handle(payload);
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}
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}
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export default TTNAppServer;
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