feat(getInternalData): allow filtering returned fields

Supply `fields` array with names of fields to return

.eslintrc

@@ -11,7 +11,8 @@
     "prefer-arrow-callback": 0,
     "max-len": [2, 150],
     "newline-per-chained-call": 0,
-    "no-param-reassign": [2, {"props": false}]
+    "no-param-reassign": [2, {"props": false}],
+    "arrow-body-style": 0
   },
   "root": true
 }

schemas/getInternalData.json

@@ -7,6 +7,15 @@
       "type": "string",
       "minLength": 3,
       "maxLength": 50
+    },
+    "fields": {
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "type": "string",
+        "minLength": 1,
+        "maxLength": 50
+      }
     }
   }
 }

src/actions/getInternalData.js

@@ -1,8 +1,14 @@
 const Promise = require('bluebird');
 const getInternalData = require('../utils/getInternalData.js');
+const pick = require('lodash/pick');
 
 module.exports = function internalData(message) {
+  const { fields } = message;
+
   return Promise
     .bind(this, message.username)
-    .then(getInternalData);
+    .then(getInternalData)
+    .then(data => {
+      return fields ? pick(data, fields) : data;
+    });
 };