improved wiki script

_wiki.js

@@ -4,88 +4,75 @@ const fetch = require('node-fetch'); // Make calls to Reddit from Node.js
 const qs = require('qs'); // Properly build a query for node-fetch POST
 const moment = require('moment'); // Time-related functions
 
+//#region constants
+
 // REDDIT_: For authentication with Reddit API. Oauth MUST be used. ID and Secret come from a "script" app type.
 const REDDIT_USER = process.env.REDDIT_USER || 'username';
 const REDDIT_PASS = process.env.REDDIT_PASS || 'password';
 const REDDIT_CLIENT_ID = process.env.REDDIT_CLIENT_ID || 'clientid';
 const REDDIT_CLIENT_SECRET = process.env.REDDIT_CLIENT_SECRET || 'clientsecret';
 
+// Initial basic authorization for getting the Oauth token
+const BASIC_AUTH = `Basic ${Buffer.from(REDDIT_CLIENT_ID + ':' + REDDIT_CLIENT_SECRET).toString('base64')}`;
+
 // WIKI_: For the Reddit Wiki
 const WIKI_SUBREDDIT = 'privacy';
 const WIKI_PAGE = 'de-google';
 const WIKI_REASON = 'Automated edit from GitHub repo: https://github.com/tycrek/degoogle';
 
-// Helps POST data be submitted properly
-const CONTENT_TYPE = 'application/x-www-form-urlencoded';
-
-updateWiki();
-
-/**
- * Update the Reddit wiki
- */
-function updateWiki() {
 // Endpoints for each of our fetches to Reddit
-    let endpoints = {
+const ENDPOINTS = {
     revisions: `https://old.reddit.com/r/${WIKI_SUBREDDIT}/wiki/revisions/${WIKI_PAGE}.json`,
     token: 'https://www.reddit.com/api/v1/access_token',
     edit: `https://oauth.reddit.com/r/${WIKI_SUBREDDIT}/api/wiki/edit`
 };
 
-    // Initial basic authorization for getting the Oauth token
+// Helps POST data be submitted properly
-    let basicAuth = `Basic ${Buffer.from(REDDIT_CLIENT_ID + ':' + REDDIT_CLIENT_SECRET).toString('base64')}`;
+const CONTENT_TYPE = 'application/x-www-form-urlencoded';
+//#endregion
 
-    let lastId, token;
+// Update the wiki
-
+Promise.all([getLastRevision(), getToken()])
-    getLastRevision(endpoints.revisions)
+    .then(([lastId, token]) => putWiki(lastId, token))
-        .then((mLastId) => lastId = mLastId)
-        .then(() => getToken(endpoints.token, basicAuth))
-        .then((mToken) => token = mToken)
-        .then(() => putWiki(endpoints.edit, lastId, token))
     .catch((err) => (console.error(err), process.exit(1)));
-}
+
+//#region functions
 
 /**
  * Get the last revision ID on the Wiki. Required otherwise editing the wiki fails
- * @param {String} endpoint Endpoint of where to get the ID's
  */
-function getLastRevision(endpoint) {
+function getLastRevision() {
-    return new Promise((resolve, reject) => {
+    return new Promise((resolve, reject) =>
-        fetch(endpoint)
+        fetch(ENDPOINTS.revisions)
             .then((response) => response.json())
             .then((json) => json.data.children[0].id) // children[0] is the most recent edit
-            .then((lastId) => resolve(lastId))
+            .then(resolve)
-            .catch((err) => reject(err));
+            .catch(reject));
-    });
 }
 
 /**
  * Gets an Oauth token used to edit the Wiki
- * @param {String} endpoint Endpoint of where to get the token
- * @param {String} auth Initial authorization data to get the better Oauth data
  */
-function getToken(endpoint, auth) {
+function getToken() {
-    return new Promise((resolve, reject) => {
+    return new Promise((resolve, reject) =>
-        fetch(endpoint, {
+        fetch(ENDPOINTS.token, {
             method: 'POST',
-            headers: { 'Authorization': auth, 'Content-Type': CONTENT_TYPE },
+            headers: { 'Authorization': BASIC_AUTH, 'Content-Type': CONTENT_TYPE },
             body: qs.stringify({ grant_type: 'password', username: REDDIT_USER, password: REDDIT_PASS })
         })
             .then((response) => response.json())
-            .then((json) => json.access_token)
+            .then(({ access_token }) => resolve(access_token))
-            .then((token) => resolve(token))
+            .catch(reject));
-            .catch((err) => reject(err));
-    });
 }
 
 /**
  * Post the contents from the README into the wiki
- * @param {String} endpoint Endpoint for editing the wiki
  * @param {String} lastId Revision ID for the Wiki
  * @param {String} token Oauth token for authenticating with the Reddit API
  */
-function putWiki(endpoint, lastId, token) {
+function putWiki(lastId, token) {
-    return new Promise((resolve, reject) => {
+    return new Promise((resolve, reject) =>
-        fetch(endpoint, {
+        fetch(ENDPOINTS.edit, {
             method: 'POST',
             headers: { 'Authorization': `bearer ${token}`, 'Content-Type': CONTENT_TYPE },
             body: qs.stringify({
@@ -97,11 +84,10 @@ function putWiki(endpoint, lastId, token) {
         })
             .then((response) => response.json())
             .then((json) => {
-                if (Object.keys(json).length == 0) resolve();
+                if (Object.keys(json).length === 0) resolve();
                 else throw Error(json);
             })
-            .catch((err) => reject(err));
+            .catch(reject));
-    });
 }
 
 /**
@@ -117,4 +103,5 @@ function fixContent(content) {
     content = content.replace(/-informational\?style=flat-square\)/g, '**');
 
     return content;
-}
+} // * If this is highlighted weirdly, it's because of the 'updated timestamp' regex, don't worry about it
+//#endregion