const path = require('path');
const {spawnSync} = require('child_process');
const fs = require('fs');

const dotenv = require('dotenv');

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

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

const cwd = process.cwd();
const distPath = path.join(cwd, 'dist', 'production');

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

const composeFile = emitString(emitObject(services));

spawnSync('mkdir', ['-p', distPath]);

fs.writeFileSync(
  path.join(distPath, 'docker-compose.yml'), composeFile
);

fs.copyFileSync(
  path.join(cwd, '.common.env'),
  path.join(distPath, '.env'),
);

fs.appendFileSync(
  path.join(distPath, '.env'),
  fs.readFileSync(path.join(cwd, '.prod.env')),
);

fs.appendFileSync(
  path.join(distPath, '.env'),
  fs.readFileSync(path.join(cwd, '.env')),
);

for (const service of services) {

  const servicePath = path.join(cwd, 'services', service);
  const serviceDistPath = path.join(distPath, service);

  spawnSync('mkdir', ['-p', serviceDistPath]);

  spawnSync('docker', [
    'run',
    '--env-file', './.common.env',
    '--env-file', './.prod.env',
    '--env-file', './.env',

    '-e', 'DEBUG=truss:*',
    '-e', 'DEBUG_COLORS=1',
    '-e', 'DEBUG_HIDE_DATE=1',
    '-e', 'NODE_PRESERVE_SYMLINKS=1',

    '-v', `${path.join(cwd, 'lib')}:/var/node/lib:ro`,
    '-v', `${servicePath}:/var/node/src:ro`,
    '-v', `${serviceDistPath}:/var/node/dist`,

    'docker.i12e.cha0s.io/cha0s6983/truss-dev',

    'yarn', 'run', 'build',
  ], {
    stdio: 'inherit',
  });

  spawnSync('rm', [
    '-rf',
    path.join(serviceDistPath, 'node_modules'),
    path.join(serviceDistPath, 'package.json'),
    path.join(serviceDistPath, 'yarn.lock'),
  ]);
}