🐛 Use siteUrl and mdx frontmatter slug for item link

Add spotify rss spec to README

README.md

@@ -79,6 +79,7 @@ module.exports = {
 // In each `.mdx` file you have (one per episode)
 ---
 type: podcast-episode
+slug: /your-website-path/to-this-episode
 title: Hello, podcast!
 subtitle: The first ever episode.
 publicationDate: 2019-01-29
@@ -120,9 +121,6 @@ For information about the general rss feed specification, see the following:
 For information about podcast-specific rss feed specifications, see the following:
 * [Apple Podcasts Connect Help](https://help.apple.com/itc/podcasts_connect/#/itcb54353390)
 * [Google Feed Requirements](https://developers.google.com/search/reference/podcast/rss-feed)
+* [Spotify Podcast Delivery Specification](https://podcasters.spotify.com/terms/Spotify_Podcast_Delivery_Specification_v1.6.pdf)
 * [Ryan Parman's iTunes Podcast RSS Spec](https://github.com/simplepie/simplepie-ng/wiki/Spec:-iTunes-Podcast-RSS)
 * [FeedForAll iTunes Tags Tutorial](https://www.feedforall.com/itune-tutorial-tags.htm)
-
-<!--
-Also see https://github.com/TheCraigHewitt/Seriously-Simple-Podcasting/blob/master/templates/feed-podcast.php
--->

package.json

@@ -1,6 +1,6 @@
 {
   "name": "gatsby-plugin-podcast-feed-mdx",
-  "version": "0.1.0-alpha.3",
+  "version": "0.1.0-alpha.4",
   "description": "Gatsby plugin to generate a podcast rss feed using mdx for episodes.",
   "author": "Dan Miller",
   "private": false,

src/gatsby-node.js

@@ -107,6 +107,7 @@ exports.onPostBuild = async ({ graphql }, pluginOptions) => {
               id
               frontmatter {
                 title
+                slug
                 subtitle
                 url
                 season
@@ -131,15 +132,15 @@ exports.onPostBuild = async ({ graphql }, pluginOptions) => {
   episodes.forEach(edge => {
     // gather the options
     const { excerpt, id } = edge.node;
-    const { title, subtitle, url, season, episodeNumber, episodeType, publicationDate, author, size, duration, explicit, categories } = edge.node.frontmatter;
+    const { title, slug, subtitle, url, season, episodeNumber, episodeType, publicationDate, author, size, duration, explicit, categories } = edge.node.frontmatter;
 
     // add an episode item to the feed using the options
     feed.item({
       guid: id,
       title,
       date: publicationDate,
       description: excerpt,
-      url,
+      url: pluginOptions.siteUrl+slug,
       categories,
       author: author,
       custom_elements: [