#!/usr/bin/env bash

# Shared helpers for Finder-launched macOS entry points. This file is sourced.

MACOS_PAUSE_ON_SUCCESS=0
MACOS_UV_BIN=""
MACOS_TEMP_DIRS=()

macos_register_temp_dir() {
  MACOS_TEMP_DIRS[${#MACOS_TEMP_DIRS[@]}]="$1"
}

macos_cleanup_temp_dirs() {
  local directory
  for directory in "${MACOS_TEMP_DIRS[@]}"; do
    [[ -n "$directory" && -d "$directory" ]] || continue
    case "$(basename "$directory")" in
      doctor-uv.*|doctor-node.*)
        rm -rf -- "$directory" || \
          printf '临时目录清理失败：%s\n' "$directory" >&2
        ;;
      *) printf '跳过不安全的临时目录清理目标：%s\n' "$directory" >&2 ;;
    esac
  done
}

macos_should_pause() {
  [[ -t 0 && -t 1 && -z "${CI:-}" && "${DOCTOR_NONINTERACTIVE:-0}" != "1" ]]
}

macos_on_exit() {
  local status="$1"
  trap - EXIT
  macos_cleanup_temp_dirs
  if [[ "$status" -ne 0 ]]; then
    printf '\n操作失败（退出码 %s）。请查看上方信息。\n' "$status" >&2
  fi
  if macos_should_pause && { [[ "$status" -ne 0 ]] || [[ "$MACOS_PAUSE_ON_SUCCESS" == "1" ]]; }; then
    printf '\n按回车键关闭此窗口…'
    IFS= read -r _ || true
  fi
  exit "$status"
}

macos_install_exit_trap() {
  MACOS_PAUSE_ON_SUCCESS="${1:-0}"
  trap 'macos_on_exit "$?"' EXIT
}

macos_die() {
  printf '错误：%s\n' "$1" >&2
  exit 1
}

macos_require_darwin() {
  if [[ "$(uname -s)" != "Darwin" ]]; then
    macos_die "此入口只能在 macOS 上运行。"
  fi
}

macos_locate_uv() {
  local candidate
  candidate="$(command -v uv 2>/dev/null || true)"
  if [[ -n "$candidate" && -x "$candidate" ]]; then
    MACOS_UV_BIN="$candidate"
    return 0
  fi

  if [[ -n "${HOME:-}" ]]; then
    for candidate in "$HOME/.local/bin/uv" "$HOME/.cargo/bin/uv"; do
      if [[ -x "$candidate" ]]; then
        MACOS_UV_BIN="$candidate"
        return 0
      fi
    done
  fi
  for candidate in /opt/homebrew/bin/uv /usr/local/bin/uv; do
    if [[ -x "$candidate" ]]; then
      MACOS_UV_BIN="$candidate"
      return 0
    fi
  done
  return 1
}

macos_ensure_uv() {
  local curl_bin installer temp_root
  if macos_locate_uv; then
    return 0
  fi

  curl_bin="$(command -v curl 2>/dev/null || true)"
  [[ -n "$curl_bin" ]] || macos_die "未找到 uv，也未找到用于安装 uv 的 curl。"
  temp_root="${TMPDIR:-/tmp}"
  temp_root="${temp_root%/}"
  [[ -n "$temp_root" ]] || temp_root="/"
  installer="$(mktemp -d "$temp_root/doctor-uv.XXXXXX")"
  macos_register_temp_dir "$installer"

  printf '未检测到 uv，正在通过官方 HTTPS 安装器安装…\n' >&2
  if ! "$curl_bin" --proto '=https' --tlsv1.2 -fsSL \
    'https://astral.sh/uv/install.sh' -o "$installer/install.sh"; then
    macos_die "uv 安装器下载失败，请检查网络后重试。"
  fi
  if ! UV_NO_MODIFY_PATH=1 /bin/sh "$installer/install.sh"; then
    macos_die "uv 安装失败。"
  fi
  hash -r
  macos_locate_uv || macos_die "uv 已安装，但未在标准位置找到可执行文件。"
}