From 7671bd12ebaa902c287b0730eeda39dae9f418c8 Mon Sep 17 00:00:00 2001
From: Carl Worth <cworth@cworth.org>
Date: Mon, 8 Jun 2020 06:59:43 -0700
Subject: [PATCH] Empathy: Add routes to receive prompts and votes on prompts

The received votes are added to the prompt objects themselves, so we
don't need to send anything beyond the prompts, and the votes will
just ride along "for free". Also, because prompts are a part of the
Empathy game's "state" property, they will always be sent as part of
the "game-state" event sent when a new client joins, so we don't need
any explicit code in the Empathy class to take care of that either.
---
 empathy.js | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/empathy.js b/empathy.js
index 12a743e..f2a6859 100644
--- a/empathy.js
+++ b/empathy.js
@@ -4,10 +4,62 @@ const Game = require("./game.js");
 class Empathy extends Game {
   constructor(id) {
     super(id);
+    this.state = {
+      prompts: []
+    };
+    this.next_prompt_id = 1;
   }
 }
 
 Empathy.router = express.Router();
+const router = Empathy.router;
+
+class Prompt {
+  constructor(id, items, prompt) {
+    this.id = id;
+    this.items = items;
+    this.prompt = prompt;
+    this.votes = [];
+  }
+
+  add_vote(player_name) {
+    if (this.votes.find(v => v === player_name))
+      return;
+
+    this.votes.push(player_name);
+  }
+}
+
+router.post('/prompts', (request, response) => {
+  const game = request.game;
+
+  const prompt = new Prompt(game.next_prompt_id,
+                            request.body.items,
+                            request.body.prompt);
+  game.next_prompt_id++;
+
+  game.state.prompts.push(prompt);
+
+  game.broadcast_event_object('prompt', prompt);
+});
+
+router.post('/vote/:prompt_id([0-9]+)', (request, response) => {
+  const prompt_id = parseInt(request.params.prompt_id, 10);
+  const game = request.game;
+  const player = game.players_by_session[request.session.id];
+
+  prompt = game.state.prompts.find(p => p.id === prompt_id);
+  if (! prompt || ! player) {
+    response.sendStatus(404);
+    return;
+  }
+
+  prompt.add_vote(player.name);
+
+  game.broadcast_event_object('prompt', prompt);
+
+  response.sendStatus(200);
+});
 
 Empathy.meta = {
   name: "Empathy",
-- 
2.43.0