#!/usr/bin/env bash
# gold_monitor 部署管理器 — 一键部署 / 卸载 / 更新
#
# 新服务器(免克隆):
#   curl -fsSL https://git.bz121.com/dekun/gold_monitor/raw/branch/main/deploy/manage.sh | bash
#
# 已安装（推荐，可交互）:
#   bash /opt/gold_monitor/deploy/manage.sh
#
# 非交互快速更新:
#   bash /opt/gold_monitor/deploy/manage.sh update
#   curl -fsSL .../deploy/manage.sh | bash -s -- update
#
set -e
if [ -n "${BASH_VERSION:-}" ]; then
  set -o pipefail
fi

INSTALL_ROOT="${INSTALL_ROOT:-/opt/gold_monitor}"
GIT_URL="${GIT_URL:-https://git.bz121.com/dekun/gold_monitor.git}"
GIT_BRANCH="${GIT_BRANCH:-main}"

_script_src="${BASH_SOURCE[0]:-}"
if [[ -n "${_script_src}" && -f "${_script_src}" ]]; then
  DEPLOY_DIR="$(cd "$(dirname "${_script_src}")" && pwd)"
  REPO_ROOT="$(cd "${DEPLOY_DIR}/.." && pwd)"
  LIB_DIR="${DEPLOY_DIR}/lib"
else
  # curl | bash 时脚本从 stdin 执行，无本地路径
  DEPLOY_DIR=""
  REPO_ROOT=""
  LIB_DIR=""
fi
unset _script_src

set -u

repo_ready() {
  [[ -f "${1}/deploy/setup_env.sh" && -f "${1}/deploy/manage.sh" ]]
}

sync_repo_if_present() {
  local root="$1"
  if [[ -d "${root}/.git" ]] && command -v git >/dev/null 2>&1; then
    git -C "${root}" pull -q --ff-only 2>/dev/null || true
  fi
}

bootstrap_repo() {
  if repo_ready "${INSTALL_ROOT}"; then
    REPO_ROOT="${INSTALL_ROOT}"
    DEPLOY_DIR="${REPO_ROOT}/deploy"
    LIB_DIR="${DEPLOY_DIR}/lib"
    sync_repo_if_present "${REPO_ROOT}"
    return 0
  fi
  if [[ -n "${REPO_ROOT}" ]] && repo_ready "${REPO_ROOT}"; then
    DEPLOY_DIR="${REPO_ROOT}/deploy"
    LIB_DIR="${DEPLOY_DIR}/lib"
    return 0
  fi

  echo "gold_monitor 部署管理器 — 首次自举"
  echo "将克隆到: ${INSTALL_ROOT}"
  if [[ "$(id -u)" -ne 0 ]]; then
    echo "错误: 请使用 root 执行" >&2
    exit 1
  fi
  if ! command -v git >/dev/null 2>&1; then
    if command -v apt-get >/dev/null 2>&1; then
      export DEBIAN_FRONTEND=noninteractive
      apt-get update -qq
      apt-get install -y git ca-certificates curl
    else
      echo "错误: 未找到 git" >&2
      exit 1
    fi
  fi
  if [[ -d "${INSTALL_ROOT}" ]]; then
    echo "错误: ${INSTALL_ROOT} 已存在但不是有效仓库" >&2
    exit 1
  fi
  mkdir -p "$(dirname "${INSTALL_ROOT}")"
  git clone -b "${GIT_BRANCH}" "${GIT_URL}" "${INSTALL_ROOT}"
  exec bash "${INSTALL_ROOT}/deploy/manage.sh" "$@" </dev/tty >/dev/tty 2>/dev/tty
}

# curl|bash 时 stdin 是脚本管道，菜单 read 会立刻 EOF；挂到真实终端
attach_tty() {
  # 把 0/1/2 都接到控制终端，避免只重定向 stdin 后 read 仍异常
  if [[ -e /dev/tty ]]; then
    exec </dev/tty >/dev/tty 2>/dev/tty
  fi
}

ensure_interactive_tty() {
  if [[ -t 0 ]]; then
    return 0
  fi
  local local_mgr="${INSTALL_ROOT}/deploy/manage.sh"
  if [[ -n "${REPO_ROOT}" && -f "${REPO_ROOT}/deploy/manage.sh" ]]; then
    local_mgr="${REPO_ROOT}/deploy/manage.sh"
  fi

  # 1) 同进程直接挂接 /dev/tty（不二次启动，少一层「像故障」的提示）
  if [[ -e /dev/tty ]] && attach_tty 2>/dev/null && [[ -t 0 ]]; then
    echo "已挂接本机终端，请继续选择。"
    return 0
  fi

  # 2) 回退：用本机已安装脚本重新 exec（stdin/stdout/stderr 全挂 tty）
  if [[ -e /dev/tty && -f "${local_mgr}" ]]; then
    echo "改用本机管理器启动: ${local_mgr}"
    exec bash "${local_mgr}" "$@" </dev/tty >/dev/tty 2>/dev/tty
  fi

  echo "错误: 当前没有可用交互终端（curl|bash 的管道不能读菜单）。" >&2
  echo "请改用:" >&2
  echo "  bash ${INSTALL_ROOT}/deploy/manage.sh" >&2
  echo "  bash ${INSTALL_ROOT}/deploy/manage.sh update" >&2
  echo "  curl -fsSL https://git.bz121.com/dekun/gold_monitor/raw/branch/main/deploy/manage.sh | bash -s -- update" >&2
  exit 1
}

read_menu_choice() {
  # set -e 下 read 遇 EOF 会直接退出，这里显式处理
  local choice=""
  if ! IFS= read -r -p "请选择: " choice </dev/tty; then
    echo "" >&2
    echo "错误: 读不到键盘输入（终端未挂接成功）。" >&2
    echo "请直接执行: bash ${INSTALL_ROOT}/deploy/manage.sh" >&2
    exit 1
  fi
  # 去掉 Windows 粘贴带来的 \\r
  choice="${choice//$'\r'/}"
  printf '%s' "${choice}"
}

run_update_quick() {
  export REPO_ROOT DEPLOY_DIR LIB_DIR INSTALL_ROOT GIT_URL GIT_BRANCH
  # shellcheck source=/dev/null
  source "${LIB_DIR}/common.sh"
  need_root
  echo "快速更新: git pull + pm2 restart"
  git -C "${REPO_ROOT}" pull --ff-only
  pm2 restart gold_monitor
  echo "更新完成"
}

show_banner() {
  local ip path
  path="${INSTALL_ROOT}"
  if repo_ready "${REPO_ROOT}"; then
    path="${REPO_ROOT}"
  fi
  if [[ -f "${LIB_DIR}/common.sh" ]]; then
    # shellcheck source=/dev/null
    source "${LIB_DIR}/common.sh"
    ip="$(detect_server_ip)"
  else
    ip="?"
  fi
  echo ""
  echo "╔══════════════════════════════════════╗"
  echo "║   gold_monitor 部署管理器            ║"
  echo "║   路径: ${path}"
  echo "║   端口: 5800  IP: ${ip}"
  echo "╚══════════════════════════════════════╝"
  echo ""
}

show_menu() {
  echo "  1) 一键部署（Web + API + PM2）"
  echo "  2) 一键卸载"
  echo "  3) 更新"
  echo "  0) 退出"
  echo ""
}

main_menu() {
  bootstrap_repo "$@"
  export REPO_ROOT DEPLOY_DIR LIB_DIR INSTALL_ROOT GIT_URL GIT_BRANCH

  local cmd="${1:-}"
  case "${cmd}" in
    update|3)
      # shellcheck source=/dev/null
      source "${LIB_DIR}/common.sh"
      run_update_quick
      exit 0
      ;;
    update-deps)
      # shellcheck source=/dev/null
      source "${LIB_DIR}/common.sh"
      need_root
      git -C "${REPO_ROOT}" pull --ff-only
      bash "${REPO_ROOT}/deploy/setup_env.sh"
      pm2 restart gold_monitor
      echo "依赖更新完成"
      exit 0
      ;;
  esac

  ensure_interactive_tty "$@"
  # shellcheck source=/dev/null
  source "${LIB_DIR}/common.sh"
  show_banner
  while true; do
    show_menu
    choice="$(read_menu_choice)"
    case "${choice}" in
      1) bash "${LIB_DIR}/install.sh" ;;
      2) bash "${LIB_DIR}/uninstall.sh" ;;
      3) bash "${LIB_DIR}/update.sh" ;;
      0) exit 0 ;;
      *) echo "无效选项: ${choice:-"(空)"}" ;;
    esac
    echo ""
  done
}

main_menu "$@"