#!/usr/bin/env bash
# Configure and compile the project (Release by default).
# Usage:
#   ./scripts/build.sh              # Release → ./build
#   ./scripts/build.sh debug        # Debug   → ./build-debug
#   ./scripts/build.sh release ../my-build   # custom build directory

set -euo pipefail

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$ROOT"

build_type="Release"
build_dir="${ROOT}/build"

if [[ "${1:-}" == "debug" || "${1:-}" == "Debug" ]]; then
  build_type="Debug"
  build_dir="${ROOT}/build-debug"
  shift || true
fi

if [[ -n "${1:-}" ]]; then
  build_dir="$(cd "$(dirname "$1")" && pwd)/$(basename "$1")"
  shift || true
fi

cmake -S "$ROOT" -B "$build_dir" -DCMAKE_BUILD_TYPE="$build_type"
cmake --build "$build_dir" -j"$(sysctl -n hw.ncpu 2>/dev/null || nproc 2>/dev/null || echo 4)"

echo "Build tree: $build_dir"