#!/usr/bin/env bash
# deploy/lib/common.sh — 部署管理器公共函数
set -e
set -u
if [ -n "${BASH_VERSION:-}" ]; then
  set -o pipefail
fi

INSTALL_ROOT="${INSTALL_ROOT:-/opt/crypto_monitor}"
GIT_URL="${GIT_URL:-https://git.bz121.com/dekun/crypto_monitor.git}"
GIT_BRANCH="${GIT_BRANCH:-main}"
BACKUP_ROOT="${BACKUP_ROOT:-/root/backups}"
TZ_NAME="${CM_TZ:-Asia/Shanghai}"
NODE_MAJOR="${NODE_MAJOR:-20}"

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

PM2_APPS=(
  crypto_binance
  crypto_gate
  crypto_okx
  manual-trading-hub
  manual-agent-binance
  manual-agent-okx
  manual-agent-gate
)

CONFIG_PATHS=(
  crypto_monitor_binance/.env
  crypto_monitor_okx/.env
  crypto_monitor_gate/.env
  manual_trading_hub/.env
  manual_trading_hub/hub_settings.json
)

INSTANCE_DIRS=(
  crypto_monitor_binance
  crypto_monitor_gate
  crypto_monitor_okx
  manual_trading_hub
)

log() { printf '[%s] %s\n' "$(TZ="${TZ_NAME}" date '+%Y-%m-%d %H:%M:%S')" "$*"; }
step() { echo ""; log "==> $*"; }

die() {
  echo "错误: $*" >&2
  exit 1
}

require_root() {
  if [[ "$(id -u)" -ne 0 ]]; then
    die "请使用 root 执行(推荐: sudo -i 后运行)"
  fi
}

require_ubuntu() {
  if [[ ! -f /etc/os-release ]]; then
    log "警告: 未检测到 /etc/os-release,跳过 Ubuntu 版本检查"
    return 0
  fi
  # shellcheck source=/dev/null
  source /etc/os-release
  if [[ "${ID:-}" != "ubuntu" ]]; then
    log "警告: 当前系统为 ${ID:-unknown},官方仅测试 Ubuntu 22.04/24.04"
    return 0
  fi
  local ver="${VERSION_ID:-}"
  if [[ "${ver}" != "22.04" && "${ver}" != "24.04" ]]; then
    log "警告: Ubuntu ${ver} 未在文档中明确测试,继续执行"
  fi
}

detect_server_ip() {
  local ip=""
  if command -v hostname >/dev/null 2>&1; then
    ip="$(hostname -I 2>/dev/null | awk '{print $1}')"
  fi
  if [[ -z "${ip}" ]]; then
    ip="127.0.0.1"
  fi
  echo "${ip}"
}

confirm_yes() {
  local msg="$1"
  local ans=""
  read -r -p "${msg} [y/N] " ans
  [[ "${ans}" == [yY] || "${ans}" == [yY][eE][sS] ]]
}

confirm_uninstall() {
  local ans=""
  echo "此操作将停止全部 PM2 进程并移走安装目录."
  read -r -p "输入 UNINSTALL 确认卸载: " ans
  [[ "${ans}" == "UNINSTALL" ]]
}

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

resolve_repo_root() {
  if repo_ready "${INSTALL_ROOT}"; then
    echo "${INSTALL_ROOT}"
    return 0
  fi
  if repo_ready "${REPO_ROOT}"; then
    echo "${REPO_ROOT}"
    return 0
  fi
  return 1
}

install_log_file() {
  local stamp
  stamp="$(TZ="${TZ_NAME}" date +%Y%m%d-%H%M%S)"
  mkdir -p "${BACKUP_ROOT}/deploy-logs"
  echo "${BACKUP_ROOT}/deploy-logs/manage-${stamp}.log"
}

backup_configs_to() {
  local src_root="$1"
  local dest="$2"
  mkdir -p "${dest}"
  local rel copied=0
  for rel in "${CONFIG_PATHS[@]}"; do
    local src="${src_root}/${rel}"
    if [[ -f "${src}" ]]; then
      mkdir -p "${dest}/$(dirname "${rel}")"
      cp -a "${src}" "${dest}/${rel}"
      log "backup ${rel}"
      copied=$((copied + 1))
    fi
  done
  if [[ "${copied}" -eq 0 ]]; then
    log "提示: 未找到可备份的配置文件"
  fi
}

install_system_packages() {
  step "安装系统依赖"
  if ! command -v apt-get >/dev/null 2>&1; then
    die "未检测到 apt-get,请手动安装 python3-venv git curl"
  fi
  export DEBIAN_FRONTEND=noninteractive
  apt-get update -qq
  apt-get install -y python3 python3-pip python3-venv curl git ca-certificates
  local pyver=""
  if command -v python3 >/dev/null 2>&1; then
    pyver="$(python3 -c 'import sys; print(f"{sys.version_info.major}.{sys.version_info.minor}")')"
    apt-get install -y "python${pyver}-venv" 2>/dev/null || apt-get install -y python3-venv
  fi
}

install_node_pm2() {
  step "检查 Node.js 与 PM2"
  if command -v pm2 >/dev/null 2>&1; then
    log "PM2 已安装: $(pm2 -v)"
    return 0
  fi
  if ! command -v node >/dev/null 2>&1; then
    log "安装 Node.js ${NODE_MAJOR}.x ..."
    curl -fsSL "https://deb.nodesource.com/setup_${NODE_MAJOR}.x" | bash -
    apt-get install -y nodejs
  fi
  log "安装 PM2 ..."
  npm install -g pm2
  log "PM2: $(pm2 -v)"
}

install_backup_cron_all() {
  step "安装三所每日备份 cron"
  local dir
  for dir in crypto_monitor_binance crypto_monitor_gate crypto_monitor_okx; do
    local inst="${REPO_ROOT}/${dir}/scripts/install_backup_cron.sh"
    if [[ -f "${inst}" ]]; then
      chmod +x "${inst}"
      bash "${inst}" || log "警告: ${dir} cron 安装失败"
    fi
  done
}

remove_backup_cron_all() {
  step "移除三所备份 cron"
  local tmp removed=0
  tmp="$(mktemp)"
  if ! crontab -l 2>/dev/null >"${tmp}"; then
    rm -f "${tmp}"
    return 0
  fi
  local filtered
  filtered="$(grep -vF "backup_data.sh" "${tmp}" || true)"
  if [[ "${filtered}" != "$(cat "${tmp}")" ]]; then
    printf '%s\n' "${filtered}" | awk '
      BEGIN { tz = 0 }
      /^CRON_TZ=Asia\/Shanghai$/ {
        if (tz++) next
      }
      { print }
    ' | crontab -
    removed=1
  fi
  rm -f "${tmp}"
  if [[ "${removed}" -eq 1 ]]; then
    log "已移除 backup_data.sh 相关 cron"
  fi
}

pm2_save_startup() {
  step "PM2 save & startup"
  pm2 save 2>/dev/null || true
  if pm2 startup systemd -u root --hp /root 2>/dev/null | grep -q "sudo"; then
    pm2 startup systemd -u root --hp /root 2>/dev/null | grep "^sudo" | bash || true
  else
    pm2 startup 2>/dev/null || true
  fi
}

pm2_count_online() {
  local name online=0
  if ! command -v pm2 >/dev/null 2>&1; then
    echo "0"
    return 0
  fi
  for name in "${PM2_APPS[@]}"; do
    if pm2 pid "${name}" >/dev/null 2>&1; then
      online=$((online + 1))
    fi
  done
  echo "${online}"
}

is_deployed() {
  local root="$1"
  [[ -x "${root}/crypto_monitor_binance/.venv/bin/python" ]] \
    || [[ -x "${root}/manual_trading_hub/.venv/bin/python" ]]
}

check_http() {
  local url="$1"
  local code
  code="$(curl -sS -o /dev/null -w '%{http_code}' --connect-timeout 5 "${url}" 2>/dev/null || echo "000")"
  [[ "${code}" == "200" || "${code}" == "302" || "${code}" == "301" ]]
}

verify_deployment() {
  local ip="${1:-$(detect_server_ip)}"
  local ok=1
  local online total

  step "部署验收"
  total="${#PM2_APPS[@]}"
  online="$(pm2_count_online)"
  if [[ "${online}" -eq "${total}" ]]; then
    echo "  [✓] PM2 进程 ${online}/${total} online"
  else
    echo "  [✗] PM2 进程 ${online}/${total} online"
    ok=0
    pm2 list 2>/dev/null || true
  fi

  local checks=(
    "中控:http://127.0.0.1:5100/"
    "Binance:http://127.0.0.1:5001/"
    "Gate:http://127.0.0.1:5000/"
    "OKX:http://127.0.0.1:5004/"
  )
  local item label url
  for item in "${checks[@]}"; do
    label="${item%%:*}"
    url="${item#*:}"
    if check_http "${url}"; then
      echo "  [✓] ${label} 可访问"
    else
      echo "  [✗] ${label} 不可访问 (${url})"
      ok=0
    fi
  done

  if [[ "${ok}" -eq 1 ]]; then
    echo ""
    log "验收通过: 进程都在 + 页面可打开"
    return 0
  fi
  echo ""
  log "验收未完全通过,可执行 pm2 logs <进程名> --lines 30 排查"
  return 1
}

print_post_install_guide() {
  local ip="${1:-$(detect_server_ip)}"
  cat <<EOF

═══════════════════════════════════════════
  ✅ 部署完成

  中控:     http://${ip}:5100
  Binance:  http://${ip}:5001
  Gate:     http://${ip}:5000
  OKX:      http://${ip}:5004

  登录账号: admin
  登录密码: admin123
  （请尽快在「系统设置」中修改）

  下一步（浏览器）:
  1. 中控 → 系统设置 → 确认账户 URL（有域名时改 flask_url）
  2. 各所 → env 配置 → 填 API、风控、企业微信
  3. 中控 → AI 配置（如需复盘）
  4. 各所 env 配置 → 开启实盘下单 → 保存并重启

  agent_url 默认本机 127.0.0.1:15200/15201/15202,一般无需修改
═══════════════════════════════════════════
EOF
}