WIP(chat): v3 controller

common/locales/en/api-v3.json

@@ -27,5 +27,7 @@
   "positionRequired": "\"position\" is required and must be a number.",
   "cantMoveCompletedTodo": "Can't move a completed todo.",
   "directionUpDown": "\"direction\" is required and must be 'up' or 'down'",
-  "alreadyTagged": "The task is already tagged with given tag."
+  "alreadyTagged": "The task is already tagged with given tag.",
+  "groupIdRequired": "\"groupId\" must be a valid UUID",
+  "groupNotFound": "Group not found."
 }

website/src/controllers/api-v3/chat.js

@@ -0,0 +1,49 @@
+import { authWithHeaders } from '../../middlewares/api-v3/auth';
+import cron from '../../middlewares/api-v3/cron';
+import { model as Group } from '../../models/group';
+import {
+  NotFound,
+} from '../../libs/api-v3/errors';
+
+let api = {};
+
+/**
+ * @api {get} /groups/:groupId/chat Get chat messages from a group
+ * @apiVersion 3.0.0
+ * @apiName GetChat
+ * @apiGroup Chat
+ *
+ * @apiParam {UUID} groupId The group _id
+ *
+ * @apiSuccess {Array} chat An array of chat messages
+ */
+api.getChat = {
+  method: 'GET',
+  url: '/groups/:groupId/chat',
+  middlewares: [authWithHeaders(), cron],
+  handler (req, res, next) {
+    let user = res.locals.user;
+    let groupId = req.params.groupId;
+
+    req.checkParams('groupId', res.t('groupIdRequired')).notEmpty();
+
+    let validationErrors = req.validationErrors();
+    if (validationErrors) return next(validationErrors);
+
+    let query = groupId === 'party' ?
+      Group.findOne({type: 'party', members: {$in: [user._id]}}) :
+      Group.findOne({$or: [
+        {_id: groupId, privacy: 'public'},
+        {_id: groupId, privacy: 'private', members: {$in: [user._id]}},
+      ]});
+
+    query.exec()
+    .then((group) => {
+      if (!group) throw new NotFound(res.t('groupNotFound'));
+      res.respond(200, group.chat);
+    })
+    .catch(next);
+  },
+};
+
+export default api;