on:
  pull_request:
    types:
      - opened
      - synchronize

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
        with:
          ref: "${{ github.event.pull_request.head.ref }}"
          repository: "${{ github.event.pull_request.head.repo.full_name }}"
          fetch-depth: 0  # ensures that tags are fetched, seems to be needed
      - name: Capture commit id
        id: capture
        run: |
          COMMIT_ID="$(git rev-parse "${{ github.head_ref }}")"
          echo "The sha of the starting commit is $COMMIT_ID"
          echo "SHA=$COMMIT_ID" >>"$GITHUB_OUTPUT"
      - name: create test commit
        run: |
          touch test_file
          git config --global user.email "you@example.com"
          git config --global user.name "Your Name"
          git add test_file
          git commit -m "feat: test feature"
      - name: test action
        uses: ./
        with:
          github_token: "${{ secrets.GITHUB_TOKEN }}"
          commit: false
          push: false
      - uses: actions/checkout@v2
        with:
          ref: "${{ github.event.pull_request.head.ref }}"
          repository: "${{ github.event.pull_request.head.repo.full_name }}"
          fetch-depth: 0  # ensures that tags are fetched, seems to be needed
          path: new_head
      - name: Test push
        run: |
          cd new_head
          last_pushed_commit="$(git rev-parse "${{ github.head_ref }}")"
          echo "Commit sha on origin: $last_pushed_commit"
          if [[ $last_pushed_commit != ${{ steps.capture.outputs.SHA }} ]]; then
            echo "Something got pushed to ${{ github.head_ref }}"
            exit 1
          fi
      - name: Test commit
        run: |
          commit_message="$(git log -1 HEAD --pretty=format:%s)"
          echo "Latest commit: $commit_message"
          if [[ $commit_message != "feat: test feature" ]]; then
            echo "The latest commit message is not 'feat: test feature'"
            exit 1
          fi