const mqtt = require('mqtt');
const { MatrixClient, SimpleFsStorageProvider, AutojoinRoomsMixin } = require('matrix-bot-sdk');
const config = require('./config.json');
const rules = require('./rules.js');

// Matrix client
const storage = new SimpleFsStorageProvider("matrix-storage.json");
const matrix = new MatrixClient(config.matrix.homeserverUrl, config.matrix.accessToken, storage);
AutojoinRoomsMixin.setupOnClient(matrix);
matrix.start().then(() => console.log("Matrix bot started"));

async function postMessage(msg) {
  await matrix.sendMessage(config.matrix.roomId, {
    msgtype: "m.text",
    format: "org.matrix.custom.html",
    formatted_body: msg,
    body: msg,
  });
}

// MQTT client
const mqttClient = mqtt.connect(config.mqtt.url, {
  username: config.mqtt.username,
  password: config.mqtt.password,
  clientId: 'mqtt-matrix-' + Math.random().toString(16).slice(2, 10),
  clean: true,
  connectTimeout: 4000,
  reconnectPeriod: 2000,
});

mqttClient.on('connect', () => {
  console.log('MQTT connected');
  mqttClient.subscribe(config.mqtt.topic, { qos: 0 }, err => {
    if (err) console.error('Subscribe error', err);
  });
});

mqttClient.on('message', async (topic, payload) => {
  const data = JSON.parse(payload.toString());
  // console.log(`MQTT message on ${topic}: ${data?.msg}`);

  rules.forEach((r) => {
    if (r.rule(data)) {
      console.log(`${topic} aplying ${r.name}`);
      postMessage(r.msg(data));
    }
  });
});


// Simple filter—customize as needed
/* if (data?.model?.includes('CQ')) {
 *   await postMessage(formatMessageCQ(data));

 * } else if (data?.msg?.includes('Sharp-SPC775')) {
 *   const msg = `🌡️${data.temperature_C} | 💧${data.humidity}`;
 *   await postMessage(msg);
 * }
 * else if (data?.msg?.includes('Cotech-367959')) {
 *   await postMessage(formatMessageCQWX(data));
 * } */