feat(blueprint): add blueprint for generating interfaces

Fixes angular#729

Author: Brocco

addon/ng2/blueprints/interface/files/__path__/__name__.ts

@@ -0,0 +1,2 @@
+export interface <%= prefix %><%= classifiedModuleName %> {
+}

addon/ng2/blueprints/interface/index.js

@@ -0,0 +1,58 @@
+const stringUtils = require('ember-cli-string-utils');
+var dynamicPathParser = require('../../utilities/dynamic-path-parser');
+var addBarrelRegistration = require('../../utilities/barrel-management');
+
+module.exports = {
+  description: '',
+  
+  anonymousOptions: [
+    '<interface-type>'
+  ],
+  
+  normalizeEntityName: function (entityName) {
+    var parsedPath = dynamicPathParser(this.project, entityName);
+
+    this.dynamicPath = parsedPath;
+    return parsedPath.name;
+  },
+
+  locals: function (options) {
+    var interfaceType = options.args [2]
+    this.fileName = stringUtils.dasherize(options.entity.name);
+    if (interfaceType) {
+      this.fileName += '.' + interfaceType; 
+    }
+    var prefix = '';
+    if (this.project.ngConfig &&
+        this.project.ngConfig.defaults &&
+        this.project.ngConfig.defaults.prefixInterfaces) {
+      prefix = 'I';
+    }
+    return { 
+      dynamicPath: this.dynamicPath.dir,
+      flat: options.flat,
+      fileName: this.fileName,
+      prefix: prefix
+    };
+  },
+
+  fileMapTokens: function () {
+    // Return custom template variables here.
+    return {
+      __path__: () => {
+        this.generatePath = this.dynamicPath.dir;
+        return this.generatePath;
+      },
+      __name__: () => {
+        return this.fileName;
+      }
+    };
+  },
+  
+  afterInstall: function() {
+    return addBarrelRegistration(
+      this, 
+      this.generatePath,
+      this.fileName);
+  }
+};

addon/ng2/blueprints/ng2/files/angular-cli.json

@@ -24,6 +24,7 @@
   },
   "defaults": {
     "prefix": "<%= prefix %>",
-    "sourceDir": "<%= sourceDir %>"
+    "sourceDir": "<%= sourceDir %>",
+    "prefixInterfaces": false
   }
 }

lib/config/schema.json

@@ -86,6 +86,9 @@
         },
         "sourceDir": {
           "type": "string"
+        },
+        "prefixInterfaces": {
+          "type": "boolean"
         }
       },
       "additionalProperties": false