#!/usr/bin/env bash
set -euo pipefail
ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
# shellcheck source=lib.sh
source "$ROOT_DIR/scripts/lib.sh"
if [[ -f "$ROOT_DIR/config/settings.conf" ]]; then
  load_config
else
  CELLULAR_IFACE_PATTERNS="${CELLULAR_IFACE_PATTERNS:-wwan,wwp,usb,enx,ppp,cdc}"
  REQUIRE_CELLULAR_IFACE=false
  CELLULAR_IFACE=
fi

echo "========== 主机 =========="
echo "hostname : $(hostname)"
echo "kernel   : $(uname -r)"
echo "arch     : $(uname -m)"
echo "mem_total: $(awk '/MemTotal/ {printf "%.0f MB", $2/1024}' /proc/meminfo 2>/dev/null || echo unknown)"
echo "mem_avail: $(awk '/MemAvailable/ {printf "%.0f MB", $2/1024}' /proc/meminfo 2>/dev/null || echo unknown)"
echo

echo "========== 接口列表 =========="
printf '%-12s %-10s %s\n' "IFACE" "STATE" "IPv4"
while IFS='|' read -r name state ip; do
  printf '%-12s %-10s %s\n' "$name" "$state" "${ip:-}"
done < <(list_ifaces)
echo

echo "========== 默认路由 =========="
ip route show default 2>/dev/null || true
echo
echo "default iface: $(detect_default_iface || echo none)"
echo

echo "========== 数据网卡（代理出口） =========="
cell="$(detect_cellular_iface "${CELLULAR_IFACE:-}" 2>/dev/null || true)"
if [[ -n "$cell" ]]; then
  echo "CELLULAR_IFACE=$cell  ip=$(detect_source_ip "$cell" || true)"
  echo "说明: 走本代理的流量将从该网卡出（数据流量）"
else
  echo "未能自动探测数据网卡。请手动设置 CELLULAR_IFACE="
  echo "可参考上面接口列表中的 wwan*/usb*/enx* 等。"
  exit 2
fi