Feat: Added generator for middleware (#261)

* Feat: Added generator for middleware

* feat: added destroy command for middleware

src/packages/cli/commands/create.js

@@ -42,6 +42,7 @@ export async function create(name, database) {
     fs.mkdirAsync(`${project}/app/models`),
     fs.mkdirAsync(`${project}/app/serializers`),
     fs.mkdirAsync(`${project}/app/controllers`),
+    fs.mkdirAsync(`${project}/app/middleware`),
     fs.mkdirAsync(`${project}/config/environments`),
     fs.mkdirAsync(`${project}/db/migrate`)
   ]);

src/packages/cli/commands/destroy.js

@@ -30,6 +30,10 @@ export async function destroyType(type, name) {
       name = pluralize(name);
       path = `app/${pluralize(type)}/${name}.js`;
       break;
+
+    case 'middleware':
+      path = `app/${type}/${name}.js`;
+      break;
   }
 
   if (await exists(`${CWD}/${path}`)) {

src/packages/cli/commands/generate.js

@@ -11,6 +11,7 @@ import serializerTemplate from '../templates/serializer';
 import controllerTemplate from '../templates/controller';
 import emptyMigrationTemplate from '../templates/empty-migration';
 import modelMigrationTemplate from '../templates/model-migration';
+import middlewareTemplate from '../templates/middleware';
 
 import indent from '../utils/indent';
 
@@ -49,13 +50,18 @@ export async function generateType(type, name, cwd, attrs = []) {
     case 'controller':
       data = controllerTemplate(name, attrs);
       break;
+
+    case 'middleware':
+      data = middlewareTemplate(name);
+      break;
   }
 
   if (type === 'model') {
     name = singularize(name);
   }
 
-  if (type !== 'model' && type !== 'migration' && name !== 'application') {
+  if (type !== 'model' && type !== 'migration' && type !== 'middleware' &&
+      name !== 'application') {
     name = pluralize(name);
   }
 
@@ -67,6 +73,8 @@ export async function generateType(type, name, cwd, attrs = []) {
     const timestamp = generateTimestamp();
 
     path = `db/migrate/${timestamp}-create-${pluralize(name)}.js`;
+  } else if (type === 'middleware') {
+    path = `app/${type}/${name}.js`;
   } else {
     path = `app/${pluralize(type)}/${name}.js`;
   }

src/packages/cli/templates/middleware.js

@@ -0,0 +1,18 @@
+// @flow
+import { camelize } from 'inflection';
+
+import underscore from '../../../utils/underscore';
+import template from '../../template';
+
+/**
+ * @private
+ */
+export default (name: string): string => {
+  name = camelize(underscore(name), true);
+
+  return template`
+    export default function ${name}(/*request, response*/) {
+
+    }
+  `;
+};