import fs from 'fs';

import RSS from 'rss';

import { blogpostsDetails } from '../src/components/blog/blogpostsDetails.js';

import path from 'path';

import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);

const __dirname = path.dirname(__filename);

const outputDir = path.join(__dirname, '../static');

if (!fs.existsSync(outputDir)) {

fs.mkdirSync(outputDir, { recursive: true });

}

const generateFeedFromBlogDetails = (feed, blogpostsDetails, nbOfBlogPosts) => {

let posts = [];

for (let i = 0; i < nbOfBlogPosts; i++) {

const post = blogpostsDetails[i];

posts.push({

title: post.title,

description: post.summary,

date: post.date,

authors: post.authors,

url: post.url,

image: post.image,

})

};

posts.forEach((post) => {

feed.item({

title: post.title,

description: post.description,

url: post.url,

date: post.date,

author: post.authors,

enclosure: {

url: 'https://quantstack.net' + post.image,

type: 'image/png',

length: 0,

},

});

});

return feed;

}

const feedLast20 = new RSS({

title: 'Recent blog posts featured by QuantStack team',

description: 'RSS feed for QuantStack website blog page',

feed_url: 'https://quantstack.net/rss.xml',

site_url: 'https://quantstack.net',

language: 'en',

});

const updatedFeedLast20 = generateFeedFromBlogDetails(feedLast20, blogpostsDetails, 20);

fs.writeFileSync(path.join(outputDir, 'rss.xml'), updatedFeedLast20.xml({ indent: true }));

const feedAll = new RSS({

title: 'All blog posts featured by QuantStack team',

description: 'RSS feed for QuantStack website blog page',

feed_url: 'https://quantstack.net/rss_all.xml',

site_url: 'https://quantstack.net',

language: 'en',

});

const updatedFeedAll = generateFeedFromBlogDetails(feedAll, blogpostsDetails, blogpostsDetails.length)

fs.writeFileSync(path.join(outputDir, 'rss_all.xml'), updatedFeedAll.xml({ indent: true }));