degooglizzazione/_wiki.js

120 lines
4.5 KiB
JavaScript

const fs = require('fs-extra'); // Reading README.md
const path = require('path'); // Get the correct path for README.md
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
// 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';
// WIKI_: For the Reddit Wiki
const WIKI_SUBREDDIT = 'privacy';
const WIKI_PAGE = 'de-go-git';
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 = {
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
let basicAuth = `Basic ${Buffer.from(REDDIT_CLIENT_ID + ':' + REDDIT_CLIENT_SECRET).toString('base64')}`;
let lastId, token;
getLastRevision(endpoints.revisions)
.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)));
}
/**
* 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) {
return new Promise((resolve, reject) => {
fetch(endpoint)
.then((response) => response.json())
.then((json) => json.data.children[0].id) // children[0] is the most recent edit
.then((lastId) => resolve(lastId))
.catch((err) => reject(err));
});
}
/**
* 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) {
return new Promise((resolve, reject) => {
fetch(endpoint, {
method: 'POST',
headers: { 'Authorization': 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((token) => resolve(token))
.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) {
return new Promise((resolve, reject) => {
fetch(endpoint, {
method: 'POST',
headers: { 'Authorization': `bearer ${token}`, 'Content-Type': CONTENT_TYPE },
body: qs.stringify({
content: fixContent(fs.readFileSync(path.join(__dirname, 'README.md')).toString()),
page: WIKI_PAGE,
reason: WIKI_REASON,
previous: lastId
})
})
.then((response) => response.json())
.then((json) => {
if (Object.keys(json).length == 0) resolve();
else throw Error(json);
})
.catch((err) => reject(err));
});
}
/**
* Fixes certain images to only show text on the Reddit wiki
* @param {String} content The content in README.md
*/
function fixContent(content) {
// Fix updated timestamp
content = content.replace(/\!\[Updated\](.*?)square\)/g, `#### Updated: ${moment().format('MMMM Do YYYY')}`);
// Fix published timestamps
content = content.replace(/\!\[Published\]\(https\:\/\/img\.shields\.io\/badge\//g, '**');
content = content.replace(/-informational\?style=flat-square\)/g, '**');
return content;
}