KomaMRI.jl/.github/workflows/docs-preview.yml at c76e921e31dad7f5ee0efa8dbe8fed448dd5d1b5 · JuliaHealth/KomaMRI.jl · GitHub

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name: Docs Preview

on:
  workflow_run:
    workflows:
      - CI
    types:
      - completed
    branches-ignore:
      - master

permissions:
  issues: write
  pull-requests: read

jobs:
  comment:
    if: >-
      github.event.workflow_run.event == 'pull_request' &&
      github.event.workflow_run.conclusion == 'success'
    name: Comment documentation preview URL
    runs-on: ubuntu-latest
    steps:
      - name: Find pull request
        id: pr
        uses: actions/github-script@v7
        with:
          script: |
            const pullRequests = context.payload.workflow_run.pull_requests;
            if (!pullRequests || pullRequests.length !== 1) {
              core.info(`Expected one pull request, found ${pullRequests?.length ?? 0}.`);
              return;
            }

            const pr = pullRequests[0];
            const { data } = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: pr.number,
            });

            if (!data.labels.some(label => label.name === 'documentation')) {
              core.info('Pull request does not have the documentation label.');
              return;
            }

            core.setOutput('number', pr.number);

      - name: Comment preview URL
        if: steps.pr.outputs.number != ''
        uses: actions/github-script@v7
        with:
          script: |
            const prNumber = Number('${{ steps.pr.outputs.number }}');
            const previewUrl = `https://juliahealth.github.io/KomaMRI.jl/previews/PR${prNumber}/`;
            const marker = '<!-- komamri-docs-preview-link -->';
            const body = `${marker}\nPreview available: ${previewUrl}`;

            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: prNumber,
              per_page: 100,
            });

            const existing = comments.find(comment =>
              comment.user?.type === 'Bot' && comment.body?.includes(marker)
            );

            if (existing) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existing.id,
                body,
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: prNumber,
                body,
              });
            }