Add migrations options

index.js

@@ -4,20 +4,27 @@
 const program = require('commander');
 const pkg = require('./package.json');
 const project = require('./src/projects');
+const migrations = require('./src/migrations');
 
 program
   .version(pkg.version, '-v, --version')
   .option('-p, --project [db]', 'Create new project')
-  .option('-m, --migration <name>', 'Create new migration file')
-  .parse(process.argv);
+  .option('-m, --migration <name>', 'Create new migration file');
+
+program.command('*').action(function() {
+  console.error('Invalid command: %s\nSee --help for a list of available commands.', program.args.join(' '));
+  process.exit(1);
+});
+
+program.parse(process.argv);
 
 if (program.project) {
   project.create(program.project);
   process.exit(0);
 }
 
 if (program.migration) {
-  console.log(program.migration);
+  migrations.create(program.migration);
   process.exit(0);
 }
 

src/migrations/index.js

@@ -0,0 +1,20 @@
+'use strict';
+
+const path = require('path');
+const templatePath = path.join(__dirname, '/../../templates/');
+const copy = require('../utils/copy');
+
+const create = name => {
+  const file = path.join(templatePath, 'migration-default.yml');
+  const snakeCase = name
+    .split(/(?=[A-Z])/)
+    .join('_')
+    .toLowerCase();
+  const fileName = `${Date.now()}_${snakeCase}`;
+
+  copy.file(file, fileName, 'migrations');
+};
+
+module.exports = {
+  create
+};

test/migrations.spec.js

@@ -0,0 +1,24 @@
+const sinon = require('sinon');
+const expect = require('chai').expect;
+const path = require('path');
+const migrations = require('../src/migrations');
+const copy = require('../src/utils/copy');
+
+describe('Migrations', function() {
+  afterEach(function() {
+    sinon.restore();
+  });
+
+  it('should invoke copy.file with migration-default file', function() {
+    const fakePath = 'directory/migration-default.yml';
+    const pathStub = sinon.stub(path, 'join').returns(fakePath);
+    const copyStub = sinon.stub(copy, 'file');
+    const now = Date.now();
+    sinon.useFakeTimers(now);
+
+    migrations.create('CustomName');
+
+    expect(pathStub.calledOnceWithExactly(sinon.match.string, 'migration-default.yml')).to.be.true;
+    expect(copyStub.calledOnceWithExactly(fakePath, `${now}_custom_name`, 'migrations')).to.be.true;
+  });
+});