#!/usr/bin/env bash
# ============================================================================
# MAX PingMon — 多目标实时 Ping 监视器
# 原创脚本，受 prettyping (denilsonsa/prettyping) 的美化输出理念启发
# 但做成多目标并发实时监控，适合测网络质量抖动
#
# 风险等级: 🟢 只读 — 不修改任何系统设置
# 用法: bash <(curl -fsSL https://dl.unvmax.com/linux/scripts/max-tools/max-pingmon.sh)
#       指定目标: bash <(curl -fsSL https://dl.unvmax.com/linux/scripts/max-tools/max-pingmon.sh) 8.8.8.8 1.1.1.1
# ============================================================================

R='\033[1;31m' G='\033[1;32m' Y='\033[1;33m' B='\033[1;34m'
C='\033[1;36m' M='\033[1;35m' W='\033[1;37m' N='\033[0m'
GR='\033[90m'

cleanup() { echo -e "\n\n${GR}已退出${N}"; exit 0; }
trap cleanup INT TERM

if [ $# -gt 0 ]; then
    TARGETS=("$@")
else
    TARGETS=("8.8.8.8" "1.1.1.1" "223.5.5.5" "114.114.114.114")
fi

echo -e "${B}┌─────────────────────────────────────────────┐${N}"
echo -e "${B}│${N}  ${G}MAX 实时 Ping 监视器${N}  ${GR}(Ctrl+C 退出)${N}"
echo -e "${B}└─────────────────────────────────────────────┘${N}"
echo -e "  ${GR}目标: ${TARGETS[*]}${N}"
echo -e "  ${GR}每轮 3 次 ping，间歇 2 秒${N}"
echo

round=0
while true; do
    round=$((round + 1))
    echo -e "${C}[第 $round 轮] $(date '+%H:%M:%S')${N}"

    for target in "${TARGETS[@]}"; do
        result=$(ping -c 3 -W 1 "$target" 2>/dev/null)
        avg=$(echo "$result" | tail -1 | awk -F'/' '{print $5}' 2>/dev/null)
        loss=$(echo "$result" | grep -oP '\d+(?=% packet loss)' 2>/dev/null)
        
        [ -z "$loss" ] && loss=100
        [ -z "$avg" ] && avg="N/A"

        # 根据延迟着色
        status=""
        if [ "$loss" = "100" ] || [ "$loss" = "?" ]; then
            echo -e "  ${R}✘ $target 超时 (丢包 100%)${N}"
        else
            if [ "$loss" -gt 10 ]; then
                echo -e "  ${Y}⚠ $target avg=${avg}ms 丢包=${loss}%${N}"
            elif [ "$(echo "$avg" | cut -d. -f1 2>/dev/null)" -lt 50 ] 2>/dev/null; then
                echo -e "  ${G}✔ $target avg=${avg}ms 丢包=${loss}%${N}"
            elif [ "$(echo "$avg" | cut -d. -f1 2>/dev/null)" -lt 200 ] 2>/dev/null; then
                echo -e "  ${Y}~ $target avg=${avg}ms 丢包=${loss}%${N}"
            else
                echo -e "  ${R}✘ $target avg=${avg}ms 丢包=${loss}%${N}"
            fi
        fi
    done

    sleep 2
    echo
done