follow_and_star_check.yml

name: PR Follow and Star Check

on:
  pull_request:
    types: [opened, reopened]

jobs:
  check-follow-and-star:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Check if user is following
        id: check-follow
        uses: actions/github-script@v6
        with:
          script: |
            const { github, context } = require('@actions/github');

            const owner = context.repo.owner;
            const prAuthor = context.payload.pull_request.user.login;

            const result = await github.rest.users.checkFollowing({
              username: prAuthor,
              target_user: owner
            });
            return result.data;

      - name: Check if user has starred the repository
        id: check-star
        uses: actions/github-script@v6
        with:
          script: |
            const { github, context } = require('@actions/github');

            const owner = context.repo.owner;
            const repo = context.repo.repo;
            const prAuthor = context.payload.pull_request.user.login;

            try {
              const result = await github.rest.activity.getRepoSubscription({
                owner: owner,
                repo: repo,
                username: prAuthor
              });
              return result.data.subscribed;
            } catch (error) {
              return false;  // User hasn't starred the repo
            }

      - name: Set check status and leave comment
        uses: actions/github-script@v6
        with:
          script: |
            const { github, context } = require('@actions/github');

            const isFollowing = steps['check-follow'].outputs.result;
            const hasStarred = steps['check-star'].outputs.result;

            if (isFollowing && hasStarred) {
              await github.rest.checks.create({
                owner: context.repo.owner,
                repo: context.repo.repo,
                name: 'Follow and Star Check',
                head_sha: context.payload.pull_request.head.sha,
                status: 'completed',
                conclusion: 'success',
                output: {
                  title: 'Success',
                  summary: 'User is following and has starred the repository.'
                }
              });
            } else {
              await github.rest.checks.create({
                owner: context.repo.owner,
                repo: context.repo.repo,
                name: 'Follow and Star Check',
                head_sha: context.payload.pull_request.head.sha,
                status: 'completed',
                conclusion: 'failure',
                output: {
                  title: 'Failure',
                  summary: 'User must follow and star the repository to proceed.'
                }
              });

              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.payload.pull_request.number,
                body: 'Please follow and star the repository to proceed with your pull request.'
              });
            }