name: PR Comment

# WARNING:
# THIS WORKFLOW ALWAYS RUNS FOR EXTERNAL CONTRIBUTORS WITHOUT ANY APPROVAL.
# THIS WORKFLOW RUNS FROM MAIN BRANCH, NOT FROM THE PR BRANCH.
# DO NOT PULL THE PR OR EXECUTE ANY CODE FROM THE PR.

on:
  pull_request_target:
    types: [opened, reopened, synchronize]
    branches:
      - main

jobs:
  comment-on-pr:
    runs-on:
      group: databricks-deco-testing-runner-group
      labels: ubuntu-latest-deco

    permissions:
      pull-requests: write

    # Only run this job for PRs from forks.
    # Integration tests are not run automatically for PRs from forks.
    if: "${{ github.event.pull_request.head.repo.fork }}"

    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Delete old comments
        env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
            # Delete previous comment if it exists
            previous_comment_ids=$(gh api "repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/comments" \
              --jq '.[] | select(.body | startswith("<!-- INTEGRATION_TESTS_MANUAL -->")) | .id')
            echo "Previous comment IDs: $previous_comment_ids"
            # Iterate over each comment ID and delete the comment
            if [ ! -z "$previous_comment_ids" ]; then
              echo "$previous_comment_ids" | while read -r comment_id; do
                echo "Deleting comment with ID: $comment_id"
                gh api "repos/${{ github.repository }}/issues/comments/$comment_id" -X DELETE
              done
            fi

      - name: Comment on PR
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          COMMIT_SHA: ${{ github.event.pull_request.head.sha }}
        run: |
          gh pr comment ${{ github.event.pull_request.number }} --body \
          "<!-- INTEGRATION_TESTS_MANUAL -->
          An authorized user can trigger integration tests manually by following the instructions below:

          Trigger:
          [go/deco-tests-run/cli](https://go/deco-tests-run/cli)

          Inputs:
          * PR number: ${{github.event.pull_request.number}}
          * Commit SHA: \`${{ env.COMMIT_SHA }}\`

          Checks will be approved automatically on success.
          "
