const {spawn} = require('child_process');
const path = require('path');

const dotenv = require('dotenv');

['.common.env', '.dev.env', '.env'].forEach((filename) => {
  dotenv.config({path: path.join(__dirname, filename)});
});

const debug = require('debug')('truss:dev');

const {emitObject, emitString} = require('./compose');

const services = process.env.SERVICES.split(',');
services.push('gateway');

const composeFile = emitString(emitObject(services));
debug('Compose file:');
debug(composeFile);

['down', 'up'].reduce((promise, op) => {

  const child = spawn('docker-compose', [
    '-f', '-',
    op,
  ], {
    env: process.env,
    stdio: ['pipe', 'inherit', 'inherit'],
  });
  child.stdin.write(composeFile);

  return promise.then(() => {
    child.stdin.end();
    return new Promise((resolve) => {
      child.on('exit', () => {
        resolve();
      });
    });
  });

}, Promise.resolve());