refactor: internal packages structure (#94)

* refactor: internal packages structure

* refactor: internal packages structure

commands/serve/lib/engine.js

@@ -0,0 +1,55 @@
+const path = require('path');
+const execa = require('execa');
+
+/* eslint no-use-before-define:0 */
+const startEngine = () => {
+  if (process.env.ACCEPT_EULA == null || process.env.ACCEPT_EULA.toLowerCase() !== 'yes') {
+    throw new Error('Need to accept EULA in order to start engine container');
+  }
+  console.log('Starting engine container ...');
+  return new Promise((resolve, reject) => {
+    const c = execa.command('cross-env ACCEPT_EULA=yes docker-compose up -d --build', {
+      cwd: path.resolve(__dirname, '../'),
+      stdio: 'inherit',
+      shell: true,
+    });
+
+    const ping = setInterval(() => {
+      const { stdout } = execa.command('docker ps -q -f name=engine -f status=running');
+      if (stdout) {
+        console.log('... engine container running');
+        clear();
+        resolve();
+      }
+    }, 1000);
+
+    const timeout = setTimeout(() => {
+      clear();
+      reject();
+    }, 60000);
+
+    function clear() {
+      clearInterval(ping);
+      clearTimeout(timeout);
+    }
+
+    c.on('exit', code => {
+      if (code !== 0) {
+        clear();
+        reject();
+      }
+    });
+  });
+};
+
+const stopEngine = () => {
+  execa.shellSync('docker-compose down', {
+    cwd: path.resolve(__dirname, '../'),
+    stdio: 'inherit',
+  });
+};
+
+module.exports = {
+  startEngine,
+  stopEngine,
+};