lgtv2mqtt2/get-config.js

connect WebOS LG TV with MQTT

import { homedir } from "os";
import path from "path";
import fs from "fs";

import paths from "./paths.js";

function migrateIfNeeded(fileName, oldFileName) {
  const oldPath = path.join(homedir(), oldFileName);
  const newPath = path.join(paths.config, fileName);

  if (fs.existsSync(oldPath) && !fs.existsSync(newPath)) {
    fs.mkdirSync(paths.config, { recursive: true });
    fs.renameSync(oldPath, newPath);
    console.log(`Migrated ${oldPath} -> ${newPath}`);
  }
}

export default function getConfig(fileName, exampleConfig, oldFileName) {
  if (oldFileName) {
    migrateIfNeeded(fileName, oldFileName);
  }

  const configPath = path.join(paths.config, fileName);

  if (!fs.existsSync(configPath)) {
    console.log(`No "${configPath}" found, create one with this content:

${JSON.stringify(exampleConfig, null, 2)}`);

    process.exit(1);
  }

  let config;

  try {
    config = JSON.parse(fs.readFileSync(configPath, "utf-8"));
  } catch (e) {
    console.log(`Couldn't parse "${configPath}"

${e}`);

    process.exit(1);
  }

  let anyKeyMissing = false;
  Object.keys(exampleConfig).forEach((requiredKey) => {
    if (!config.hasOwnProperty(requiredKey)) {
      console.log(
        `Missing key "${requiredKey}" in config file "${configPath}"`
      );
      anyKeyMissing = true;
    }
  });

  if (anyKeyMissing) {
    process.exit(1);
  }

  return config;
}