preview_link.yml

name: Post preview link
on:
  pull_request:
    paths:
    - 'content/en/**.md'

permissions:
  contents: read
  pull-requests: write

# Stop the current running job if a new push is made to the PR
concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref }}
  cancel-in-progress: true

jobs:
  preview-link:
    if: contains(github.head_ref, '/')
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@v4
      with:
        fetch-depth: 0
        persist-credentials: false

    - name: Set up Python
      uses: actions/setup-python@v5.1.0
      with:
        python-version: '3.10'
    - run: pip install Mako docutils

    - name: Find changed files
      id: changed_files
      uses: tj-actions/changed-files@v42
      with:
        include_all_old_new_renamed_files: true

    - name: Generate links
      env:
        branch: ${{ github.head_ref }}
        DELETED_FILES: ${{ steps.changed_files.outputs.deleted_files }}
        RENAMED_FILES: ${{ steps.changed_files.outputs.renamed_files }}
        MODIFIED_FILES: ${{ steps.changed_files.outputs.modified_files }}
        ADDED_FILES: ${{ steps.changed_files.outputs.added_files }}
      id: comment_body
      run: |
        python local/bin/py/preview_links.py --deleted="${DELETED_FILES}" \
        --renamed="${RENAMED_FILES}" \
        --modified="${MODIFIED_FILES}" \
        --added="${ADDED_FILES}"

    - name: Render template
      id: template
      uses: chuhlomin/render-template@v1.9
      with:
        template: .github/preview-links-template.md

    - name: Find existing comment
      uses: peter-evans/find-comment@v3.1.0
      id: find_comment
      with:
        issue-number: ${{ github.event.pull_request.number }}
        comment-author: 'github-actions[bot]'
        body-includes: "Preview links ("

    - name: Post comment
      uses: peter-evans/create-or-update-comment@v4.0.0
      with:
        issue-number: ${{ github.event.pull_request.number }}
        comment-id: ${{ steps.find_comment.outputs.comment-id }}
        edit-mode: replace
        body: ${{ steps.template.outputs.result }}