#!/bin/bash
set -euo pipefail

cd "$(dirname "$0")"

show_help() {
	cat <<'EOF'
Usage:
  ./codesearch <pattern> [rg options...]

Examples:
  ./codesearch "ws_send"
  ./codesearch "RENDER\\(Request& context\\)"
  ./codesearch -tcpp "compiler_invoke"
  ./codesearch -g '*.uce' "context.call"

Notes:
  - This is a thin wrapper around ripgrep (`rg`).
  - It searches from the repository root.
  - Generated/build directories are excluded by default:
    `.git/`, `bin/`, `dist/`, and `work/`.
EOF
}

if [[ $# -eq 0 ]]; then
	show_help
	exit 1
fi

case "${1:-}" in
	-h|--help|help)
		show_help
		exit 0
		;;
esac

if command -v rg >/dev/null 2>&1; then
	exec rg \
		--line-number \
		--column \
		--smart-case \
		--glob '!.git/**' \
		--glob '!bin/**' \
		--glob '!dist/**' \
		--glob '!work/**' \
		"$@"
fi

pattern="$1"
shift || true

echo "ripgrep (rg) is not installed; falling back to grep." >&2
exec grep -RIn \
	--exclude-dir=.git \
	--exclude-dir=bin \
	--exclude-dir=dist \
	--exclude-dir=work \
	-- "$pattern" .