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@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
      - name: Check and comment 👩🏾‍💻
        uses: actions/github-script@d7906e4ad0b1822421a7e6a35d5ca353c962f410
        with:
          github-token: ${{ secrets.GH_PAT }}
          script: |
            const fs = require('fs');
            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 contributions found');
              return;
            }

            var data = fs.readFileSync('.all-contributorsrc', 'utf8');
            let json = JSON.parse(data);
            const contributor = json.contributors.find(contributor => contributor.login === pr.user.login);
            if (contributor) {
              console.log(contributor);
              contributions = contributions.filter(contribution => !contributor.contributions.includes(contribution));
            }

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

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

            if (!contributor) {
              body += `\n\nThis is pure magic 🪄! @holopin-bot @${pr.user.login} wizard`;
            }

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