From 6ba91ed109efd39488a5b6347afd6782f6ef0241 Mon Sep 17 00:00:00 2001
From: Matthias Kretschmann <m@kretschmann.io>
Date: Wed, 5 Jun 2019 23:19:05 +0200
Subject: [PATCH] fetch nav categories from Medium

---
 README.md         | 38 ++++++++++++++++++++++++++++++++++++++
 package.json      |  2 +-
 webtask-medium.js | 22 ++++++++++++++++++++++
 3 files changed, 61 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index d607d0c..4bc4634 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@
   - [Medium](#medium)
     - [Get Latest Posts](#get-latest-posts)
     - [Get Followers Count](#get-followers-count)
+    - [Get Categories](#get-categories)
   - [YouTube](#youtube)
   - [MailChimp](#mailchimp)
   - [Zoho](#zoho)
@@ -59,6 +60,43 @@ https://TASK_URL/TASK_NAME/:medium_username/followers
 }
 ```
 
+#### Get Categories
+
+Reflecting the navigation categories used in the blog.
+
+```bash
+http://localhost:8080/:medium_username/categories
+
+# when published on webtask.io
+https://TASK_URL/TASK_NAME/:medium_username/categories
+```
+
+**Response**
+
+```json
+[
+    {
+        "title": "Product",
+        "url": "https://blog.oceanprotocol.com/product/home"
+    }, {
+        "title": "Community",
+        "url": "https://blog.oceanprotocol.com/community/home"
+    }, {
+        "title": "Deep Tech",
+        "url": "https://blog.oceanprotocol.com/deep-tech/home"
+    }, {
+        "title": "People",
+        "url": "https://blog.oceanprotocol.com/people/home"
+    }, {
+        "title": "Token Launch",
+        "url": "https://blog.oceanprotocol.com/token/home"
+    }, {
+        "title": "Use Cases",
+        "url": "https://blog.oceanprotocol.com/usecases/home"
+    }
+]
+```
+
 ### YouTube
 
 **`webtask-youtube.js`**: Generic task to fetch and reconstruct items from any YouTube account. YouTube API key is provided via [secret environment variable](https://webtask.io/docs/issue_parameters) `YOUTUBE_API_KEY` setup in web editor of webtask.io.
diff --git a/package.json b/package.json
index 5853775..aa203eb 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
     "version": "0.1.0",
     "private": true,
     "scripts": {
-        "start": "wt serve webtask-youtube.js",
+        "start": "wt serve webtask-medium.js",
         "test": "eslint ./*.js"
     },
     "dependencies": {
diff --git a/webtask-medium.js b/webtask-medium.js
index 20c1498..49dfe15 100644
--- a/webtask-medium.js
+++ b/webtask-medium.js
@@ -63,4 +63,26 @@ app.get('/:username/followers', (req, res) => {
     })
 })
 
+app.get('/:username/categories', (req, res) => {
+    const url = `https://medium.com/${req.params.username}?format=json`
+
+    request(url, (error, response) => {
+        const json = JSON.parse(response.body.replace('])}while(1);</x>', ''))
+        const { navItems } = json.payload.collection
+        const parsedCategories = []
+        let holder = {}
+
+        if (error) return
+
+        for (let i = 0; i < navItems.length; i++) {
+            holder.title = navItems[i].title
+            holder.url = navItems[i].url
+            parsedCategories.push(holder)
+            holder = {}
+        }
+
+        res.send(parsedCategories)
+    })
+})
+
 module.exports = webtask.fromExpress(app)