const { resolve } = require('path');
const { execSync } = require('child_process');
const { exec, upAll, stop } = require('docker-compose');
const browsersync = require('browser-sync');
const mysql = require('mysql');

const name = 'windycoys';

const dockerOptions = {
  cwd: resolve(__dirname),
  log: true,
};

const browserSyncOptions = {
  files: [
    'theme/**/*',
  ],
  watchtask: true,
  open: false,
};

const mysqlConfig = {
  user: 'root',
  password: 'password',
  database: 'wordpress',
};

process.env.COMPOSE_PROJECT_NAME = name;

// Get IP address
const getIpAddr = function getIpAddr(id) {
  return execSync(`docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' ${id}`).toString('utf8').trim();
};

// Update URIs in MYSQL database
const updateUriData = function updateUriData(wordpress, db) {
  mysqlConfig.host = db;
  const con = mysql.createConnection(mysqlConfig);
  con.connect();

  const query = `UPDATE wp_options SET option_value='http://${wordpress}' WHERE option_name in ('siteurl', 'home')`;

  con.query(query, (error) => {
    if (error) {
      console.error('Error', error.sqlMessage);
      process.exit(1);
    }
  });

  con.end();
};

// Register Exit handler to stop Docker containers on exit
const exitHandler = function exitHandler() {
  stop(dockerOptions).then(
    () => {
      console.log('\n');
      process.exit();
    },
    (err) => {
      console.error('Error:', err.message);
      process.exit(1);
    },
  );
};

process.on('beforeExit', exitHandler.bind());
process.on('SIGINT', exitHandler.bind());
process.on('SIGUSR1', exitHandler.bind());
process.on('SIGUSR2', exitHandler.bind());
process.on('uncaughtException', exitHandler.bind());

// Start Docker containers
upAll(dockerOptions).then(
  () => {
    console.log('Docker containers launched, starting browser-sync...');
    const wordpress = getIpAddr(`${name}_wordpress_1`);
    const db = getIpAddr(`${name}_db_1`);
    if (wordpress && db) {
      updateUriData(wordpress, db);
      const bs = browsersync.create();
      browserSyncOptions.proxy = wordpress;
      bs.init(browserSyncOptions);
    } else {
      console.error('Error', 'No IP address for Docker containers. Aborting.');
      process.exit(1);
    }
  },
  (err) => {
    console.error('Error', err.message);
    process.exit(1);
  },
);