nbviewer.yml

name: Generate nbviewer links

on:
  pull_request:
    types:
      - opened
      - edited
    paths:
      - "**.ipynb"

jobs:
  nbviewer-links:
    runs-on: ubuntu-latest
    steps:
      - name: checkout repo
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: get files
        id: files
        uses: jitterbit/get-changed-files@v1
        continue-on-error: true

      - name: add comments
        uses: actions/github-script@v3
        env:
          FILES: ${{steps.files.outputs.all}}
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const body = process.env.FILES
              .split(" ")
              .filter(f => (f.endsWith(".ipynb") && !f.startsWith("portfolio/")))
              .map(f => `* [${f}](https://nbviewer.jupyter.org/github/${context.repo.owner}/${context.repo.repo}/blob/${context.sha}/${f})`)

            if (body.length > 0) {
              github.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: "nbviewer URLs for impacted notebooks:\n\n" + body.join("\n")
              })
            }