.github/workflows/on_comment.yaml

name: "On Comment"

on:
  issue_comment:
    types: [created]

permissions:
  contents: write
  issues: write
  pull-requests: write

jobs:
  # This job always runs to prevent GHA from marking the run as failed when
  # all other jobs are skipped.
  noop:
    runs-on: ubuntu-latest
    steps:
      - run: echo "No-op"

  parse_comment:
    runs-on: ubuntu-latest
    if: |
      github.event.comment.author_association == 'OWNER' ||
      github.event.comment.author_association == 'MEMBER' ||
      github.event.comment.author_association == 'COLLABORATOR'
    outputs:
      command: ${{ steps.parse.outputs.command }}
      issue_number: ${{ steps.parse.outputs.issue_number }}
      pr_number: ${{ steps.parse.outputs.pr_number }}
      backports: ${{ steps.parse.outputs.backports }}
    steps:
      - name: Parse comment
        id: parse
        env:
          COMMENT_BODY: ${{ github.event.comment.body }}
          IS_PR: "${{ github.event.issue.pull_request != null }}"
          EVENT_NUMBER: "${{ github.event.issue.number }}"
          HAS_RELEASE_LABEL: "${{ contains(github.event.issue.labels.*.name, 'type: release') }}"
          HAS_BACKPORT_LABEL: "${{ contains(github.event.issue.labels.*.name, 'type: backport-pr') }}"
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          if [ "$IS_PR" = "false" ]; then
            # Set issue number for non-PR issues (release or backport tracking issues)
            issue_number=$EVENT_NUMBER
            echo "issue_number=$issue_number" >> "$GITHUB_OUTPUT"
            echo "issue_number=$issue_number" >> "$GITHUB_ENV"

            # Check if it's a release tracking issue
            if [ "$HAS_RELEASE_LABEL" = "true" ]; then
              # Handle /create-rc comment
              if echo "$COMMENT_BODY" | grep -qE '^[[:space:]]*/create-rc([[:space:]]|$)'; then
                echo "command=create-rc" >> "$GITHUB_OUTPUT"
              # Handle /prepare comment
              elif echo "$COMMENT_BODY" | grep -qE '^[[:space:]]*/prepare([[:space:]]|$)'; then
                echo "command=prepare" >> "$GITHUB_OUTPUT"
              # Handle /process-backports comment
              elif echo "$COMMENT_BODY" | grep -qE '^[[:space:]]*/process-backports([[:space:]]|$)'; then
                echo "command=process-backports" >> "$GITHUB_OUTPUT"
              # Handle /add-backports comment
              elif echo "$COMMENT_BODY" | grep -qE '^[[:space:]]*/add-backports([[:space:]]|$)'; then
                args=$(echo "$COMMENT_BODY" | grep -E '^[[:space:]]*/add-backports([[:space:]]|$)' | sed -E 's/^[[:space:]]*\/add-backports[[:space:]]*//')
                args=$(echo "$args" | sed -e 's/^[[:space:],]*//' -e 's/[[:space:],]*$//')
                csv=$(echo "$args" | sed -E 's/[[:space:],]+/ /g' | tr ' ' ',')
                if [ -n "$csv" ]; then
                  echo "command=add-backports" >> "$GITHUB_OUTPUT"
                  echo "backports=$csv" >> "$GITHUB_OUTPUT"
                else
                  echo "command=none" >> "$GITHUB_OUTPUT"
                  echo "Error: No PRs specified for add-backports." >&2
                  gh api \
                    --method POST \
                    -H "Accept: application/vnd.github+json" \
                    -H "X-GitHub-Api-Version: 2022-11-28" \
                    /repos/${{ github.repository }}/issues/comments/${{ github.event.comment.id }}/reactions \
                    -f "content=-1"
                fi
              # Handle /promote comment
              elif echo "$COMMENT_BODY" | grep -qE '^[[:space:]]*/promote([[:space:]]|$)'; then
                echo "command=promote" >> "$GITHUB_OUTPUT"
              else
                echo "command=none" >> "$GITHUB_OUTPUT"
              fi
            # Check if it's a backport tracking issue
            elif [ "$HAS_BACKPORT_LABEL" = "true" ]; then
              # Handle /prepare comment for backports
              if echo "$COMMENT_BODY" | grep -qE '^[[:space:]]*/prepare([[:space:]]|$)'; then
                echo "command=backport-prepare" >> "$GITHUB_OUTPUT"
              # Handle /create-releases comment for backports
              elif echo "$COMMENT_BODY" | grep -qE '^[[:space:]]*/create-releases([[:space:]]|$)'; then
                echo "command=backport-create-releases" >> "$GITHUB_OUTPUT"
              else
                echo "command=none" >> "$GITHUB_OUTPUT"
              fi
            else
              echo "command=none" >> "$GITHUB_OUTPUT"
            fi
          elif [ "$IS_PR" = "true" ]; then
            pr_number=$EVENT_NUMBER
            # Handle /backport comment on PR
            if echo "$COMMENT_BODY" | grep -qE '^[[:space:]]*/backport([[:space:]]|$)'; then
              echo "command=pr-backport" >> "$GITHUB_OUTPUT"
              echo "pr_number=$pr_number" >> "$GITHUB_OUTPUT"
            else
              echo "command=none" >> "$GITHUB_OUTPUT"
            fi
          else
            echo "command=none" >> "$GITHUB_OUTPUT"
          fi

  call_create_rc:
    needs: parse_comment
    if: needs.parse_comment.outputs.command == 'create-rc'
    uses: ./.github/workflows/release_create_rc.yaml
    with:
      issue: ${{ needs.parse_comment.outputs.issue_number }}
      comment_id: "${{ github.event.comment.id }}"
    secrets: inherit

  call_prepare:
    needs: parse_comment
    if: needs.parse_comment.outputs.command == 'prepare'
    uses: ./.github/workflows/release_prepare.yaml
    with:
      issue: ${{ needs.parse_comment.outputs.issue_number }}
    secrets: inherit

  call_add_backports:
    needs: parse_comment
    if: |
      needs.parse_comment.outputs.command == 'add-backports' ||
      needs.parse_comment.outputs.command == 'pr-backport'
    uses: ./.github/workflows/release_add_backports.yaml
    with:
      prs: ${{ needs.parse_comment.outputs.command == 'pr-backport' && needs.parse_comment.outputs.pr_number || needs.parse_comment.outputs.backports }}
      issue: ${{ needs.parse_comment.outputs.issue_number }}
    secrets: inherit

  call_process_backports_after_add:
    needs: [parse_comment, call_add_backports]
    if: needs.parse_comment.outputs.command == 'add-backports'
    uses: ./.github/workflows/release_process_backports.yaml
    with:
      issue: ${{ needs.parse_comment.outputs.issue_number }}
      comment_id: "${{ github.event.comment.id }}"
    secrets: inherit

  call_process_backports_only:
    needs: parse_comment
    if: needs.parse_comment.outputs.command == 'process-backports'
    uses: ./.github/workflows/release_process_backports.yaml
    with:
      issue: ${{ needs.parse_comment.outputs.issue_number }}
      comment_id: "${{ github.event.comment.id }}"
    secrets: inherit

  call_promote:
    needs: parse_comment
    if: needs.parse_comment.outputs.command == 'promote'
    uses: ./.github/workflows/release_promote.yaml
    with:
      issue: ${{ needs.parse_comment.outputs.issue_number }}
    secrets: inherit

  call_backport_prepare:
    needs: parse_comment
    if: needs.parse_comment.outputs.command == 'backport-prepare'
    uses: ./.github/workflows/backport_prepare.yaml
    with:
      issue: ${{ needs.parse_comment.outputs.issue_number }}
    secrets: inherit

  call_backport_create_releases:
    needs: parse_comment
    if: needs.parse_comment.outputs.command == 'backport-create-releases'
    uses: ./.github/workflows/backport_create_releases.yaml
    with:
      issue: ${{ needs.parse_comment.outputs.issue_number }}
    secrets: inherit