kube-actions.yaml

name: PR Actions

on:
  issue_comment:
    types: [created]
  pull_request:
    types: [labeled]

env:
  GH_TOKEN: ${{ secrets.AGENT_TOKEN }}

jobs:
  handle-comments:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout code
      uses: actions/checkout@v2

    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.x'

    - name: Install yq
      run: pip install yq

    - name: Handle PR Comments
      run: |
        COMMENT_BODY=$(jq -r '.comment.body' $GITHUB_EVENT_PATH)
        PR_NUMBER=$(jq -r '.issue.number' $GITHUB_EVENT_PATH)
        COMMENT_USER=$(jq -r '.comment.user.login' $GITHUB_EVENT_PATH)

        while IFS= read -r COMMENT_LINE; do
          COMMENT_LINE=$(echo "$COMMENT_LINE" | sed ':a;N;$!ba;s/\n//g' | awk '{$1=$1};1')

          if [[ "$COMMENT_LINE" == "/lgtm" ]]; then
            gh pr edit $PR_NUMBER --add-label lgtm
            echo "Add label: lgtm"
          elif [[ "$COMMENT_LINE" == "/approve" ]]; then
            if yq ".approvers[] | select(. == \"$COMMENT_USER\") " OWNERS | grep -q "$COMMENT_USER"; then
              gh pr edit $PR_NUMBER --add-label approved
              echo "Add label: approved"
            else
              echo "User $COMMENT_USER is not authorized to approve"
            fi
          elif [[ "$COMMENT_LINE" == "/lgtm cancel" ]]; then
            if gh pr view $PR_NUMBER --json labels --jq '.labels[].name' | grep -q "lgtm"; then
              gh pr edit $PR_NUMBER --remove-label lgtm
              echo "Remove label: lgtm"
            else
              echo "Label 'lgtm' does not exist"
            fi
          elif [[ "$COMMENT_LINE" == "/approve cancel" ]]; then
            if gh pr view $PR_NUMBER --json labels --jq '.labels[].name' | grep -q "approved"; then
                if yq ".approvers[] | select(. == \"$COMMENT_USER\") " OWNERS | grep -q "$COMMENT_USER"; then
                  gh pr edit $PR_NUMBER --remove-label approved
                  echo "Remove label: approved"
                else
                  echo "User $COMMENT_USER is not authorized to cancel the approved label"
                fi
            else
              echo "Label 'approved' does not exist"
            fi
          elif [[ "$COMMENT_LINE" =~ ^/kind ]]; then
            LABEL=$(echo "$COMMENT_LINE" | awk '{print $2}')

            if [[ "$LABEL" == "lgtm" || "$LABEL" == "approve" ]]; then
              echo "The label '$LABEL' cannot be added using /kind."
            else
              gh pr edit $PR_NUMBER --add-label $LABEL
              echo "Add label: '$LABEL'"
            fi
          elif [[ "$COMMENT_LINE" =~ ^/remove-kind ]]; then
            LABEL=$(echo "$COMMENT_LINE" | awk '{print $2}')

            if [[ "$LABEL" == "lgtm" || "$LABEL" == "approve" ]]; then
              echo "The label '$LABEL' cannot be removed using /remove-kind."
            else
              if gh pr view $PR_NUMBER --json labels --jq '.labels[].name' | grep -q $LABEL; then
                gh pr edit $PR_NUMBER --remove-label $LABEL
                echo "Remove label: '$LABEL'"
              fi
            fi
          else
              echo "$COMMENT_LINE is not supported"
          fi
        done <<< "$COMMENT_BODY"

    - name: Merge PR if LGTMed and approved
      run: |
        PR_NUMBER=$(jq -r '.issue.number' $GITHUB_EVENT_PATH)
        LABELS=$(gh pr view $PR_NUMBER --json labels --jq '.labels[].name')

        if [[ "$LABELS" == *"lgtm"* && "$LABELS" == *"approved"* ]]; then
          gh pr merge $PR_NUMBER --merge
        else
          echo "Not ready to merge"
        fi