list-changed-pages.yml

name: List Changed Pages
on:
  pull_request:
    branches:
      - main
    paths:
      - "content/**/*"

permissions:
  actions: read
  checks: read
  contents: read
  issues: write
  pull-requests: write

jobs:
  post-files-changed-comment:
    name: "Post files changed comment"
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Get all changed markdown files
        id: changed-files
        uses: tj-actions/changed-files@v45
        with:
          files: content/**/*.{md,mdx}

      - name: Build comment body
        id: build-comment-body
        env:
          CHANGED_FILES: ${{ steps.changed-files.outputs.any_changed }}
          ALL_CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
          BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
        run: |
          shopt -s extglob # enable extended globbing
          OUTPUT=""
          if [ ${CHANGED_FILES} == 'true' ]; then
            OUTPUT="| original | preview |%0A| ------ | ------ |%0A"
            for file in ${ALL_CHANGED_FILES}
            do
              FILE_PATH=${file//+([0-9])-/} # remove numeric prefixes
              FILE_PATH=${FILE_PATH#content\/} # remove "content/"
              FILE_PATH=${FILE_PATH%.mdx} # remove ".mdx"
              FILE_PATH=${FILE_PATH%index} # remove "index"
              BRANCH_NAME=${BRANCH_NAME:0:28} # shorten branch name for preview link to a maximum of 28 characters
              OUTPUT+="| [${file}](https://www.prisma.io/docs/${FILE_PATH}) | [${file}](https://${BRANCH_NAME//\//-}.docs-51g.pages.dev/${FILE_PATH}) |%0A"
            done
          else
            OUTPUT="No files changed."
          fi
          echo "::set-output name=body::$OUTPUT"
          shopt -u extglob # disable extended globbing

      - name: Post comment
        uses: ./.github/actions/create-or-update-comment
        with:
          pull-request: ${{ github.event.pull_request.number }}
          body: ${{ steps.build-comment-body.outputs.body }}
          body-includes: "original | preview"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}