feat: Mysa baseboard thermostats (#1)

src/main.ts

@@ -0,0 +1,81 @@
+import { configDotenv } from 'dotenv';
+import { readFile, rm, writeFile } from 'fs/promises';
+import { MysaApiClient, MysaSession } from 'mysa-js-sdk';
+import { pino } from 'pino';
+import { Thermostat } from './thermostat';
+
+configDotenv({
+  path: ['.env', '.env.local'],
+  override: true
+});
+
+const rootLogger = pino({
+  name: 'mysa2mqtt',
+  level: process.env.MYSA_2_MQTT_LOG_LEVEL,
+  transport: {
+    target: 'pino-pretty',
+    options: {
+      colorize: true,
+      singleLine: true,
+      ignore: 'hostname,module',
+      messageFormat: '\x1b[33m[{module}]\x1b[39m {msg}'
+    }
+  }
+}).child({ module: 'mysa2mqtt' });
+
+/** Mysa2mqtt entry-point. */
+async function main() {
+  rootLogger.info('Starting mysa2mqtt...');
+
+  let session: MysaSession | undefined;
+  try {
+    rootLogger.debug('Loading Mysa session...');
+    const sessionJson = await readFile('session.json', 'utf8');
+    session = JSON.parse(sessionJson);
+  } catch {
+    rootLogger.debug('No valid Mysa session file found.');
+  }
+  const client = new MysaApiClient(session, { logger: rootLogger.child({ module: 'mysa-js-sdk' }) });
+
+  client.emitter.on('sessionChanged', async (newSession) => {
+    if (newSession) {
+      rootLogger.debug('Saving new Mysa session...');
+      await writeFile('session.json', JSON.stringify(newSession));
+    } else {
+      try {
+        rootLogger.debug('Removing Mysa session file...');
+        await rm('session.json');
+      } catch {
+        // Ignore error if file does not exist
+      }
+    }
+  });
+
+  if (!client.isAuthenticated) {
+    rootLogger.info('Logging in...');
+    const username = process.env.MYSA_2_MQTT_USERNAME;
+    const password = process.env.MYSA_2_MQTT_PASSWORD;
+
+    if (!username || !password) {
+      throw new Error('Missing MYSA_2_MQTT_USERNAME or MYSA_2_MQTT_PASSWORD environment variables.');
+    }
+
+    await client.login(username, password);
+  }
+
+  const [devices, firmwares] = await Promise.all([client.getDevices(), client.getDeviceFirmwares()]);
+
+  const thermostats = Object.entries(devices.DevicesObj).map(
+    ([, device]) =>
+      new Thermostat(client, device, rootLogger.child({ module: 'thermostat' }), firmwares.Firmware[device.Id])
+  );
+
+  for (const thermostat of thermostats) {
+    await thermostat.start();
+  }
+}
+
+main().catch((error) => {
+  rootLogger.fatal(error, 'Unexpected error');
+  process.exit(1);
+});