gatsby-source-medium-feed/gatsby-node.js

Gatsby plugin to get posts written in medium

"use strict";

const rssParser = require('rss-parser');

function getJsonFeed(userName) {
  const parser = new rssParser({
    customFields: {
      item: [['content:encoded', 'content']]
    }
  });
  return parser.parseURL(`https://medium.com/feed/${userName}`).then(feed => {
    const parsedFeeds = feed.items.map(item => {
      const thumbnail = item.content.match(/(?<=(<img[^>]+src="))([^"\s]+)(?!"[^>]*\/z)/g)[0];
      const title = item.title,
            date = item.isoDate,
            author = item.creator,
            link = item.link,
            content = item.content;
      const slug = item.title.replace(/[^a-zA-Z0-9\s]+/g, '').toLowerCase().split(' ').join('-');
      return {
        title,
        date,
        author,
        link,
        content,
        thumbnail,
        slug
      };
    });
    return parsedFeeds;
  });
}

function sourceNodes({
  actions,
  createNodeId,
  createContentDigest,
  reporter
}, {
  userName,
  name
}) {
  const createNode = actions.createNode;

  if (!userName || !name) {
    const missingOption = !userName && !name ? 'userName and name' : !userName ? 'userName' : 'name';
    reporter.panic(`${missingOption} has to defined in plugin configuration.`);
  }

  return getJsonFeed(userName).then(feed => {
    feed.forEach(item => {
      const id = createNodeId(item.link);
      createNode(Object.assign({}, item, {
        id,
        parent: null,
        children: [],
        internal: {
          contentDigest: createContentDigest(feed),
          type: name,
          mediaType: 'application/json',
          content: JSON.stringify(item)
        }
      }));
    });
  });
}

exports.sourceNodes = sourceNodes;