require-assignees-reviews.yaml

name: Require Assignees Reviews
on:
  pull_request:
    types:
      - assigned
      - unassigned
# Should cancel outdated workflows on clearing or assigning several people at once, and only let last instance of this workflow run
concurrency: 
      group: required-reviewers-${{ github.event.pull_request.head.ref }}
      cancel-in-progress: true
env:
  LIST: ${{ toJSON(github.event.pull_request.assignees.*.login) }}

jobs:
  update-requested-reviewers:
    runs-on: ubuntu-latest
    name: Update requested reviewers

    steps:
      # get the repo / files to work on
      - name: Checkout repository
        uses: actions/checkout@v2
        with:
          ssh-key: ${{ secrets.OTTO_ACTIONS_SSH_KEY }}
          ref: ${{ github.event.pull_request.head.ref }}

      - name: Set git user information
        run: |

          git config --global user.email "otto@nsquared.io"
          git config --global user.name "otto-bot-git"

      - name: Cleanup old review files
        run: |

          echo Removing old file
          rm ./.github/code-review/require-person/**/PR-${{ github.event.number }} -f
          echo Removed old files successfully

        # the below bash script uses jq to iterate on comma separated array [ 'string1', 'string2' ] (not same as a bash array)
        # it has two main parts
        # first: looping over assignees creating code ownership files for each
        # second: takes effect only if the run removed all assignees and the list was empty, in this case it commits the deletion of files
      - name: Create corresponding review files
        run: |
          jq -rc '.[]' <<< "$LIST" | while read i; do
          
          echo "Creating file for $i to review PR-${{ github.event.number }}"
          mkdir -p "./.github/code-review/require-person/$i/" && touch "./.github/code-review/require-person/$i/PR-${{ github.event.number }}"
          echo "Successfully created file for $i to review PR-${{ github.event.number }}"

          git add -A
          echo "Successfully staged any changes"
         
          git commit -m "Requiring review from '$i' ci bypass" || true
          echo "Commit step done"
         
          git push
          echo "Successfully pushed to remote"
          
          sleep 9
          echo "Successfully woke up"

          echo Success
          done

          git add -A
          echo "Successfully staged"
          git commit -m "Removed required reviewers ci bypass" || true
          echo "Successfully made commit"
          git push
          echo "Successfully pushed to remote"