#!/bin/bash
# 看各类资源的响应头，判断有哪些能被 Cloudflare 缓存却因为 no-store 被挡了。
set -u

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

echo "════════ 各路径的缓存相关响应头 ════════"
for p in "/" "/v1/health" "/shot/pc-main.png" "/favicon.ico" \
         "/download/ykxmz-server-1.8.1.zip"; do
    echo "  ── $p ──"
    curl -sI --max-time 30 -H "User-Agent: $UA" "$BASE$p" 2>/dev/null \
        | grep -iE '^HTTP|^cache-control|^cf-cache-status|^content-type|^content-length|^expires|^age' \
        | tr -d '\r' | sed 's/^/      /'
done

echo
echo "════════ 静态图中的 cf-cache-status（HIT 说明缓存生效）════════"
for i in 1 2 3; do
    s=$(curl -sI --max-time 20 -H "User-Agent: $UA" "$BASE/shot/pc-main.png" 2>/dev/null \
        | grep -i '^cf-cache-status' | tr -d '\r' | awk '{print $2}')
    echo "    第 $i 次: cf-cache-status = ${s:-?}"
    sleep 1
done

echo
echo "════════ relay 源码里缓存头的设置 ════════"
grep -n 'Cache-Control' /root/lanremote-relay/relay.py | sed 's/^/  /'

echo
echo "════════ 下载路由的实现（看有没有做流式/分块）════════"
sed -n '/if path.startswith("\/download\/")/,/^        # /p' /root/lanremote-relay/relay.py \
    | head -50 | sed 's/^/  /'