#!/bin/bash
# 用真正的 GET 验证缓存头（curl -I 发的是 HEAD，之前看的一直是 HEAD 的响应！）
set -u

BASE=https://relay.xxmxxs.top
UA='LanRemote/1.8.1'

echo "════════ 1. 本机直连 · 真 GET（-D - 把响应头 dump 出来）════════"
for p in "/" "/download/ykxmz-setup-1.8.1.exe" "/shot/pc-main.png"; do
    cc=$(curl -s -D - -o /dev/null --max-time 15 "http://127.0.0.1:8080$p" 2>/dev/null \
         | grep -i '^cache-control' | tr -d '\r')
    printf "  GET  %-38s %s\n" "$p" "${cc:-（无）}"
done

echo
echo "════════ 2. 对比 HEAD（两者应该一致）════════"
for p in "/" "/download/ykxmz-setup-1.8.1.exe"; do
    cc=$(curl -sI --max-time 15 "http://127.0.0.1:8080$p" 2>/dev/null \
         | grep -i '^cache-control' | tr -d '\r')
    printf "  HEAD %-38s %s\n" "$p" "${cc:-（无）}"
done

echo
echo "════════ 3. 走公网 · 真 GET 看 cf-cache-status ════════"
for p in "/" "/shot/pc-main.png" "/download/ykxmz-server-1.8.1.zip"; do
    echo "  ── $p ──"
    for i in 1 2 3; do
        hdr=$(curl -s -D - -o /dev/null --max-time 30 -H "User-Agent: $UA" "$BASE$p" 2>/dev/null | tr -d '\r')
        st=$(echo "$hdr" | grep -i '^cf-cache-status' | awk '{print $2}')
        cc=$(echo "$hdr" | grep -i '^cache-control' | cut -d' ' -f2-)
        age=$(echo "$hdr" | grep -i '^age:' | awk '{print $2}')
        printf "      第 %d 次: status=%-8s age=%-7s cc=%s\n" \
            "$i" "${st:-无}" "${age:-无}" "${cc:-无}"
        sleep 1
    done
done