composer-diff.yml

name: Composer Diff
on:
    pull_request:
        paths:
            - 'composer.lock'
jobs:
    composer-diff:
        name: Composer Diff
        runs-on: ubuntu-latest
        steps:
            - name: Checkout
              uses: actions/checkout@v2
              with:
                  fetch-depth: 0 # Required to make it possible to compare with PR base branch

            - name: Generate composer diff
              id: composer_diff # To reference the output in comment
              uses: IonBazan/composer-diff-action@v1

            - uses: marocchino/sticky-pull-request-comment@v2
              # An empty diff result will break this action.
              if: ${{ steps.composer_diff.outputs.composer_diff_exit_code != 0 }}
              with:
                  header: composer-diff # Creates a collapsed comment with the report
                  message: |
                      <details>
                      <summary>Composer package changes</summary>

                      ${{ steps.composer_diff.outputs.composer_diff }}

                      </details>