From 8d1cd6e8711cad3550ebbe69e2a2dcf471f3ee67 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Sat, 21 Oct 2017 18:07:44 +0300
Subject: Handle loading latest images

---
 package.json |  1 +
 server.js    | 35 +++++++++++++++++++++++++++++++++--
 yarn.lock    |  4 ++++
 3 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index 572e8b5..f2f13f3 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
     "aws-sdk": "^2.138.0",
     "express": "^4.16.2",
     "mapbox-gl": "^0.40.1",
+    "moment": "^2.19.1",
     "pug": "^2.0.0-rc.4",
     "redis": "^2.8.0",
     "request": "^2.83.0",
diff --git a/server.js b/server.js
index 6d2b33c..e612391 100644
--- a/server.js
+++ b/server.js
@@ -4,6 +4,8 @@ const app = express()
 const redis = require('redis')
 const client = redis.createClient(process.env.REDIS_URL)
 
+const moment = require('moment')
+
 const request = require('request')
 const aws = require('aws-sdk')
 const s3 = new aws.S3()
@@ -38,7 +40,7 @@ function fetchImages() {
                   console.log(`Uploading to bucket`)
                   s3.putObject({
                     Bucket: 'imgs.geshem.space',
-                    Key: `${r}/${d}/${t}.png`,
+                    Key: `${d}/${t}/${r}.png`,
                     ContentType: response.headers['content-type'],
                     ContentLength: response.headers['content-length'],
                     Body: body,
@@ -49,7 +51,10 @@ function fetchImages() {
                       client.del(key)
                     }
                     else {
-                      client.set(key, data.ETag.slice(1, -1))
+                      client.multi([
+                        ['set', key, data.ETag.slice(1, -1)],
+                        ['del', 'images:latest']
+                      ]).exec()
                     }
                   })
                 }
@@ -87,6 +92,32 @@ app.use('/', function (req, res, next){
   next()
 });
 
+app.get('/imgs', function (req, res) {
+  res.setHeader('Content-Type', 'application/json');
+  client.get('images:latest', (err, reply) => {
+    if (err) {
+      console.log(err)
+    }
+    else if (!reply) {
+      s3.listObjectsV2({
+        Bucket: 'imgs.geshem.space',
+        //StartAfter: moment().subtract(1, 'days').format('YYYYMMDD')
+      }, (err, data) => {
+        const imgs = data.Contents.slice(-20).map( (d) => d.Key)
+        const imgres = JSON.stringify({
+          '140': imgs.filter( (d) => d.endsWith('140.png') ),
+          '280': imgs.filter( (d) => d.endsWith('280.png') )
+        })
+        client.set('images:latest', imgres)
+        res.send(imgres)
+      })
+    }
+    else {
+      res.send(reply)
+    }
+  })
+})
+
 app.get('/', function (req, res) {
   res.render('index', { prod: process.env.NODE_ENV === 'production' })
 })
diff --git a/yarn.lock b/yarn.lock
index 11d4776..f5f2dae 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2991,6 +2991,10 @@ mixin-object@^2.0.1:
   dependencies:
     minimist "0.0.8"
 
+moment@^2.19.1:
+  version "2.19.1"
+  resolved "https://registry.yarnpkg.com/moment/-/moment-2.19.1.tgz#56da1a2d1cbf01d38b7e1afc31c10bcfa1929167"
+
 ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
-- 
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