A simple REST API, to fetch all comments on a given GitHub discussion thread. Built as a Cloudflare Worker.

github-discussion-comments.js

/**
 * Fetch all comments on a given GitHub discussion
 * A simple REST API, built for Cloudflare Workers
 * Code licensed under MIT, (C) Alicia Sykes 2024
 */

addEventListener('fetch', event => {
  event.respondWith(handleRequest(event.request))
})

async function handleRequest(request) {
  const url = new URL(request.url);
  const username = url.searchParams.get('username');
  const repo = url.searchParams.get('repo');
  const discussionId = url.searchParams.get('discussionId');

  if (!username || !repo || !discussionId) {
    return new Response('Missing required parameters', { status: 400 });
  }

  const query = `
  query {
    repository(owner: "${username}", name: "${repo}") {
      discussion(number: ${discussionId}) {
        comments(first: 100) {
          nodes {
            id
            body
            bodyHTML
            author {
              login
              avatarUrl
              ... on User {
                name
                location
                websiteUrl
                createdAt
                followers {
                  totalCount
                }
              }
            }
            createdAt
            lastEditedAt
            upvoteCount
            reactionGroups {
              content
              users {
                totalCount
              }
            }
          }
        }
      }
    }
  }
  
  `;

  try {
    const apiResponse = await fetch('https://api.github.com/graphql', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'Authorization': `bearer ${GH_API_TOKEN}`,
				'User-Agent': 'GetDiscussionComments' 
      },
      body: JSON.stringify({ query })
    });

    const result = await apiResponse.json();

    if (!apiResponse.ok) {
      throw new Error(result.message || 'Failed to fetch GitHub data');
    }

    return new Response(JSON.stringify(result.data.repository.discussion.comments.nodes), {
      headers: {
        'Content-Type': 'application/json',
        'Access-Control-Allow-Origin': '*',
        'Access-Control-Allow-Methods': 'GET, OPTIONS',
        'Access-Control-Allow-Headers': 'Content-Type'
      },
    });
  } catch (error) {
    return new Response(error.message, { status: 500 });
  }
}

About
A quick REST API, for Cloudflare Workers, to fetch all comments on a given GitHub Discussions thread.

Example
An example use case for this, is here, where I'm fetching user reviews from GH discussions.
I've also written a web component in Lit, which can display a full thread's comments.

---

Usage
Just send a GET request to:
https://discussion-comments.as93.net/?username=[USERNAME]&repo=[REPOSITORY]&discussionId=[ID]

You'll get a response containing an array of comments, for example see: here

---

Deployment

1. Setup Node.js, if you haven't already done so, then install wrangler, npm i -g wrangler
2. Create a new worker project, with wrangler init sponsors-api
3. Navigate into your project, and install deps with cd sponsors-api and npm install
4. In your wrangler.toml add your API key to the GITHUB_TOKEN env var
5. Start the development server, and test everything's working with wrangler dev
6. Finally, run wrangler deploy to deploy your app to the world!

Alternatively, just log in to Cloudflare, GO to "Workers" then "New" / "Quick Edit".
And then paste the above script in, and then hit "Save & Deploy". Done :)

You can now make requests to https://[project-name].workers.dev 🚀

---

License
Licensed under MIT, © Alicia Sykes 2024