refactor: move convertPoll to polls hooks

Author: eug-vs

hooks/convertPoll.ts

@@ -7,7 +7,7 @@ const raiseNewVerifedPolls = async (context: HookContext): Promise<HookContext>
   // Raise unseen verified polls to the very top
   context.result = _.sortBy(
     context.result,
-    poll => !(poll.author.verified && !poll.userChoice)
+    poll => !(poll.author.verified && !poll.vote)
   );
   return context;
 };
@@ -16,7 +16,7 @@ const lowerOldPolls = async (context: HookContext): Promise<HookContext> => {
   // Move all seen polls down
   context.result = _.sortBy(
     context.result,
-    poll => !!poll.userChoice
+    poll => !!poll.vote
   );
   return context;
 };

services/feed/feed.hooks.ts

@@ -1,6 +1,47 @@
-import convertPoll from '../../hooks/convertPoll';
+import { HookContext } from '@feathersjs/feathers';
+import { Types } from 'mongoose';
+import bluebird from 'bluebird'; import _ from 'lodash';
+import { Poll } from 'which-types';
+
+import { PollSchema } from '../../models/polls/poll.schema';
+import VoteModel from '../../models/votes/vote.model';
 import sortByDate from '../../hooks/sortByDate';
 
+
+const convertPoll = async (context: HookContext): Promise<HookContext> => {
+  const { app, result, params: { user } } = context;
+
+  const convert = async (poll: PollSchema): Promise<Poll | null> => {
+    const author = await app.service('users').get(poll.authorId);
+
+    const contents = await VoteModel.aggregate([
+      { $match: { pollId: Types.ObjectId(poll._id) } },
+      { $group: { _id: '$which', total: { $sum: 1 } } }
+    ]).then(groups => groups.reduce(
+      (acc, group) => _.set(acc, `${group._id}.votes`, group.total),
+      { left: { votes: 0 }, right: { votes: 0 } }
+    ));
+
+    const vote = await VoteModel.findOne(
+      { pollId: poll._id, authorId: user?._id }
+    );
+
+    return _.merge(
+      _.omit(poll, ['authorId']),
+      { author, contents, vote }
+    );
+  };
+
+  if (Array.isArray(result)) {
+    const polls = await bluebird.map(result, (poll: PollSchema) => convert(poll));
+    context.result = _.compact(polls);
+  } else {
+    context.result = await convert(result);
+  }
+  return context;
+};
+
+
 export default {
   before: {
     find: sortByDate