github-labeler.sh

#!/usr/bin/env bash

get_label_for_prefix() {
    local title="$1"

    case "$title" in
    feat*)
        echo "feat"
        ;;
    fix* | bug*)
        echo "fix"
        ;;
    docs*)
        echo "docs"
        ;;
    test*)
        echo "test"
        ;;
    chore*)
        echo "chore"
        ;;
    refactor*)
        echo "refactor"
        ;;
    revert*)
        echo "revert"
        ;;
    style*)
        echo "style"
        ;;
    perf*)
        echo "perf"
        ;;
    ci*)
        echo "ci"
        ;;
    *)
        echo ""
        ;;
    esac
}

echo "Fetching all unlabeled PRs..."
issues=$(gh pr list --search "no:label" --state all --limit 1000 --json number,title --jq '.[]')

echo "$issues" | while read -r line; do
    number=$(echo "$line" | jq -r '.number')
    title=$(echo "$line" | jq -r '.title')

    label=$(get_label_for_prefix "$title")

    # Apply label if one was determined
    if [ ! -z "$label" ]; then
        echo "Adding label '$label' to PR #$number: $title"
        gh pr edit "$number" --add-label "$label"

        # Optional: Add a small delay to avoid API rate limiting
        sleep 0.5
    fi
done