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blog/gatsby/feeds.js

67 lines
2.1 KiB
JavaScript

const fs = require('fs')
const path = require('path')
const pify = require('pify')
const { siteUrl, siteTitle, siteDescription, author } = require('../config')
const writeFile = pify(fs.writeFile)
const feedContent = edge => {
const { image } = edge.node.frontmatter
const { html } = edge.node
const footer =
'<hr />This post was published on <a href="https://kremalicious.com">kremalicious.com</a>'
return image
? `<img src="${image.childImageSharp.resize.src}" /><br />${html}${footer}`
: `${html}${footer}`
}
const generateJsonFeed = async posts => {
const jsonItems = await posts.map(edge => {
const { frontmatter, fields, excerpt } = edge.node
const { slug, date } = fields
return {
id: path.join(siteUrl, slug),
url: path.join(siteUrl, slug),
title: frontmatter.title,
summary: excerpt,
date_published: new Date(date).toISOString(),
date_modified: frontmatter.updated
? new Date(frontmatter.updated).toISOString()
: new Date(date).toISOString(),
tags: [frontmatter.tags],
content_html: feedContent(edge)
}
})
const jsonFeed = {
version: 'https://jsonfeed.org/version/1',
title: siteTitle,
description: siteDescription,
home_page_url: siteUrl,
feed_url: path.join(siteUrl, 'feed.json'),
user_comment:
'This feed allows you to read the posts from this site in any feed reader that supports the JSON Feed format. To add this feed to your reader, copy the following URL — https://kremalicious.com/feed.json — and add it your reader.',
favicon: path.join(siteUrl, 'favicon.ico'),
icon: path.join(siteUrl, 'apple-touch-icon.png'),
author: {
name: author.name,
url: author.uri
},
items: jsonItems
}
await writeFile(
path.join('./public', 'feed.json'),
JSON.stringify(jsonFeed),
'utf8'
).catch(err => {
throw Error('\nFailed to write JSON Feed file: ', err)
})
// eslint-disable-next-line no-console
console.log('\nsuccess Generating JSON feed')
}
module.exports = { generateJsonFeed, feedContent }