issue-kind-label.yaml

name: Apply kind/area labels and milestone from issue body

on:
  issues:
    types: [opened, edited]

jobs:
  kind-labels:
    runs-on: ubuntu-latest
    permissions:
      issues: write
    steps:
      - name: Sync kind labels
        env:
          GH_TOKEN: ${{ github.token }}
          ISSUE_BODY: ${{ github.event.issue.body }}
          ISSUE_NUMBER: ${{ github.event.issue.number }}
          REPO: ${{ github.repository }}
        run: |
          # Extract /kind values from issue body. Absence of a directive is a no-op
          # to avoid wiping kind/* labels set by maintainers through the UI.
          kinds=$(printf '%s' "$ISSUE_BODY" | tr -d '\r' | sed -n 's|^/kind[[:space:]][[:space:]]*||p' | sed 's|[[:space:]]*$||' | sed '/^$/d' | sort -u)
          [ -z "$kinds" ] && exit 0

          # Remove existing kind/* labels
          gh issue view "$ISSUE_NUMBER" --repo "$REPO" --json labels \
            -q '.labels[].name | select(startswith("kind/"))' | \
            while IFS= read -r label; do
              gh issue edit "$ISSUE_NUMBER" --repo "$REPO" --remove-label "$label" || echo "::warning::Failed to remove label '$label'"
            done

          printf '%s\n' "$kinds" | \
            while IFS= read -r kind; do
              gh issue edit "$ISSUE_NUMBER" --repo "$REPO" --add-label "kind/$kind" || \
                echo "::warning::Label 'kind/$kind' not found in repository"
            done

      - name: Set area labels
        env:
          GH_TOKEN: ${{ github.token }}
          ISSUE_BODY: ${{ github.event.issue.body }}
          ISSUE_NUMBER: ${{ github.event.issue.number }}
          REPO: ${{ github.repository }}
        run: |
          # Absence of a directive is a no-op. Area labels are also set by
          # maintainers through the UI and clearing here would wipe those.
          areas=$(printf '%s' "$ISSUE_BODY" | tr -d '\r' | sed -n 's|^/area[[:space:]][[:space:]]*||p' | \
            sed 's|[[:space:]]*$||' | sed '/^$/d' | sort -u)
          [ -z "$areas" ] && exit 0

          # Remove existing area/* labels
          gh issue view "$ISSUE_NUMBER" --repo "$REPO" --json labels \
            -q '.labels[].name | select(startswith("area/"))' | \
            while IFS= read -r label; do
              gh issue edit "$ISSUE_NUMBER" --repo "$REPO" --remove-label "$label" || echo "::warning::Failed to remove label '$label'"
            done

          printf '%s\n' "$areas" | \
            while IFS= read -r area; do
              gh issue edit "$ISSUE_NUMBER" --repo "$REPO" --add-label "area/$area" || \
                echo "::warning::Label 'area/$area' not found in repository"
            done

      - name: Set milestone
        env:
          GH_TOKEN: ${{ github.token }}
          ISSUE_BODY: ${{ github.event.issue.body }}
          ISSUE_NUMBER: ${{ github.event.issue.number }}
          REPO: ${{ github.repository }}
        run: |
          # Use the last /milestone directive in the issue body
          milestone=$(printf '%s' "$ISSUE_BODY" | tr -d '\r' | sed -n 's|^/milestone[[:space:]][[:space:]]*||p' | \
             sed 's|[[:space:]]*$||' | sed '/^$/d' | tail -n 1)
          [ -z "$milestone" ] && exit 0
          gh issue edit "$ISSUE_NUMBER" --repo "$REPO" --milestone "$milestone" || \
            echo "::warning::Milestone '$milestone' not found in repository"