From 24c9363f0c3f5573074756606e7e1529bba99d14 Mon Sep 17 00:00:00 2001
From: Jonathan Cremin <jonathan@crem.in>
Date: Thu, 19 Apr 2018 22:03:49 +0100
Subject: [PATCH] Add Slack support

---
 app.js                     |  3 +++
 docker-compose.yml         |  3 +--
 public/src/views/index.vue | 21 +++++++++------
 routes/slack.js            | 54 ++++++++++++++++++++++++++++++++++++++
 views/index.html           |  1 +
 5 files changed, 72 insertions(+), 10 deletions(-)
 create mode 100644 routes/slack.js

diff --git a/app.js b/app.js
index 9718aa0..32ec692 100644
--- a/app.js
+++ b/app.js
@@ -16,6 +16,7 @@ import index from './routes/index';
 import recent from './routes/recent';
 import search from './routes/search';
 import share from './routes/share';
+import slack from './routes/slack';
 import errorHandler from './lib/error-handler';
 
 const debug = debuglog('combine.fm');
@@ -57,6 +58,8 @@ app.use(route.get('/recent', recent));
 app.use(route.post('/search', search));
 app.use(route.get('/:service/:type/:id.:format?', share));
 
+app.use(route.post('/slack', slack));
+
 if (!module.parent) {
   app.listen(process.env.PORT || 3000, () => {
     debug(`Koa HTTP server listening on port ${(process.env.PORT || 3000)}`);
diff --git a/docker-compose.yml b/docker-compose.yml
index a63d1ca..578a8a7 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -20,6 +20,7 @@ services:
       AWS_ACCESS_KEY_ID:
       AWS_SECRET_ACCESS_KEY:
       AWS_TAG:
+      SLACK_TOKEN:
     volumes:
       - ./:/app:cached
       - node_modules:/app/node_modules
@@ -61,8 +62,6 @@ services:
       POSTGRES_DB: "combinefm"
   redis:
     image: "redis:4.0.2-alpine"
-    ports:
-      - "6379:6379"
 
 volumes:
   node_modules:
diff --git a/public/src/views/index.vue b/public/src/views/index.vue
index f04ad1e..b20a18d 100644
--- a/public/src/views/index.vue
+++ b/public/src/views/index.vue
@@ -38,14 +38,19 @@
     </div>
     <div>
       <h2 class="title is-2">Tools</h2>
-      <div class="columns">
-        <p class="column is-half">
-          Download the Chrome Extension and get Combine.fm links right from your address bar.
-        </p>
-        <p class="column is-half">
-          <a href="https://chrome.google.com/webstore/detail/kjfpkmfgcflggjaldcfnoppjlpnidolk"><img src="/assets/images/chrome-web-store.png" alt="Download the Chrome Extension" /></a>
-        </p>
-      </div>
+      <p>
+        <a href="https://slack.com/oauth/authorize?client_id=349358389361.349904899522&scope=links:read,chat:write:bot"><img alt="Add to Slack" height="40" width="139" src="https://platform.slack-edge.com/img/add_to_slack.png" srcset="https://platform.slack-edge.com/img/add_to_slack.png 1x, https://platform.slack-edge.com/img/add_to_slack@2x.png 2x" /></a>
+      </p>
+      <p>
+        Add to Slack and get links matched inline.
+      </p>
+      <hr />
+      <p>
+        <a href="https://chrome.google.com/webstore/detail/kjfpkmfgcflggjaldcfnoppjlpnidolk"><img src="/assets/images/chrome-web-store.png" alt="Download the Chrome Extension" height="75" width="248" /></a>
+      </p>
+      <p>
+        Download the Chrome Extension and get Combine.fm links right from your address bar.
+      </p>
     </div>
   </div>
 </template>
diff --git a/routes/slack.js b/routes/slack.js
new file mode 100644
index 0000000..41a07ea
--- /dev/null
+++ b/routes/slack.js
@@ -0,0 +1,54 @@
+import kue from 'kue';
+import request from 'superagent';
+import debuglog from 'debug';
+import { inspect } from 'util';
+
+import lookup from '../lib/lookup';
+import services from '../lib/services';
+import { find, create } from '../lib/share';
+
+const debug = debuglog('combine.fm:slack');
+
+const queue = kue.createQueue({
+  redis: process.env.REDIS_URL,
+});
+
+const slackToken = process.env.SLACK_TOKEN;
+
+export default async function (ctx) {
+  if (ctx.request.body.challenge) {
+    ctx.body = ctx.request.body.challenge;
+    return;
+  }
+
+  for (const link of ctx.request.body.event.links) {
+    if (link.domain === 'combine.fm') {
+      continue;
+    }
+
+    const music = await lookup(link.url);
+    debug(music);
+    const payload = {
+      channel: ctx.request.body.event.channel,
+      attachments: [
+        {
+          color: '#FE4365',
+          author_name: `${music.name} by ${music.artist.name}`,
+          author_link: `https://combine.fm/${music.service}/${music.type}/${music.id}`,
+          author_icon: music.artwork.small,
+        },
+      ]
+    }
+    try {
+      const { body } = await request.post('https://slack.com/api/chat.postMessage')
+        .set('Authorization', `Bearer ${slackToken}`)
+        .send(payload);
+      debug(body)
+    } catch (err) {
+      debug(err);
+    }
+  }
+
+  ctx.body = 'OK';
+}
+
diff --git a/views/index.html b/views/index.html
index 8b64071..8fd34b9 100644
--- a/views/index.html
+++ b/views/index.html
@@ -12,6 +12,7 @@
   <meta name='twitter:title' property='og:title' content='Combine.fm &bull; <%=head.title%>' />
   <meta name='twitter:description' property='og:description' content='Combine.fm matches album and track links from Youtube, Spotify, Google Music, Apple Music, Amazon Music and Deezer and gives you back one link with matches we find on all of them.' />
   <meta name='twitter:image:src' property='og:image' content='<%=head.image%>' />
+  <meta name="slack-app-id" content="AA9SLSFFC">
   <meta property='og:url' content='<%=head.shareUrl%>' />
   <link rel='shortcut icon' href='/assets/images/favicon.png' />
   <link rel='icon' sizes='512x512' href='/assets/images/logo-512.png' />