2 files changed, 23 insertions, 14 deletions
diff --git a/models/polls/poll.model.ts b/models/polls/poll.model.ts
index 7f6be9a..6749e5c 100644
--- a/models/polls/poll.model.ts
+++ b/models/polls/poll.model.ts
@@ -1,5 +1,20 @@
 import { Model, model } from 'mongoose';
 import { PollSchema, pollSchema } from './poll.schema';
+import { Types } from 'mongoose';
+import { Which } from 'which-types';
+
+pollSchema.methods.vote = function(userId: string, which: Which): PollSchema {
+  const participants: Types.ObjectId[] = ['left', 'right'].reduce((acc, option) => {
+    const { votes } = this.contents[option];
+    return acc.concat(votes);
+  }, []);
+
+  if (!participants.some(user => user.equals(userId))) {
+    this.contents[which].votes.push(userId);
+  }
+
+  return this.save();
+}
 
 export default model<PollSchema, Model<PollSchema>>('Poll', pollSchema);
 
diff --git a/models/polls/poll.schema.ts b/models/polls/poll.schema.ts
index bc6d497..4d1d762 100644
--- a/models/polls/poll.schema.ts
+++ b/models/polls/poll.schema.ts
@@ -1,27 +1,21 @@
 import { Document, Schema, Types } from 'mongoose';
-import { User } from '../users/user.schema';
 
-export interface ImageData {
+export interface ImageDataSchema {
   url: string;
-  votes: number;
 }
 
-export interface Poll {
-  author: User;
+export interface PollSchema extends Document {
   contents: {
-    left: ImageData;
-    right: ImageData;
+    left: ImageDataSchema;
+    right: ImageDataSchema;
   };
-}
-
-export interface PollSchema extends Document, Omit<Poll, 'author'> {
+  createdAt: Date;
   authorId: string;
+  vote: (userId: string, which: 'left' | 'right') => PollSchema;
 }
 
-
-const imageDataSchema = {
+export const imageDataSchema = {
   url: String,
-  votes: Number
 };
 
 export const pollSchema = new Schema({
@@ -33,5 +27,5 @@ export const pollSchema = new Schema({
     type: Types.ObjectId,
     ref: 'User'
   }
-});
+}, { timestamps: true });