name: Contributors
on:
  pull_request_target:
    types:
      - closed

jobs:
  check:
    runs-on: ubuntu-latest
    if: github.event.pull_request.merged == true
    steps:
      - name: Checkout code 👋
        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c
      - name: Check and comment 👩🏾‍💻
        uses: actions/github-script@98814c53be79b1d30f795b907e553d8679345975
        with:
          github-token: ${{ secrets.GH_PAT }}
          script: |
            const { repo: { owner, repo } } = context;
            const pr = context.payload.pull_request;

            if (pr.user.id === 2492783 || pr.user.type === "Bot") {
              console.log('No credit for maintainer/bot, stop processing');
              return;
            }

            const response = await github.rest.pulls.listFiles({
              owner, repo,
              pull_number: pr.number
            });

            if (response.status !== 200) {
              console.log('Could not fetch files');
              return;
            }

            var addContribution = function(arr, name, path, contribution) {
              if (arr.indexOf(contribution) != -1) {
                return
              }
              if (name.includes(path)) {
                arr.push(contribution)
              }
            };

            var contributions = [];
            for (const file of response.data) {
              const name = file.filename;
              addContribution(contributions, name, 'themes/', 'design');
              addContribution(contributions, name, 'src/', 'code');
              addContribution(contributions, name, 'website/', 'doc');
            }

            if (contributions.length === 0) {
              console.log('No relevant additions found');
              return;
            }

            const body = `@all-contributors please add @${pr.user.login} for ${contributions.join()}`;

            console.log(`Adding comment: ${body}`);
            await github.rest.issues.createComment({
              owner, repo,
              issue_number: pr.number,
              body,
            });