#!/bin/bash
# 部署缓存头改动，并验证 Cloudflare 是否真的缓存了。
#
# 关键疑问：Cloudflare 默认只缓存一批扩展名，
# .exe / .zip / .apk **可能不在**默认列表里。
# 所以不能只看"我发了 Cache-Control"就算完，
# 必须看响应头里的 cf-cache-status 有没有变成 HIT。
set -u

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

echo "════════ 1. 重启中转让缓存头生效 ════════"
systemctl restart lanremote-relay
sleep 6
echo "  中转: $(systemctl is-active lanremote-relay)"
curl -s --max-time 10 http://127.0.0.1:8080/v1/health | head -c 80
echo

echo
echo "════════ 2. 本机直连看缓存头（确认代码生效）════════"
for p in "/" "/download/ykxmz-server-1.8.1.zip" "/download/ykxmz-setup-1.8.1.exe"; do
    echo "  ── $p ──"
    curl -sI --max-time 15 "http://127.0.0.1:8080$p" 2>/dev/null \
        | grep -iE '^HTTP|^cache-control|^content-length|^content-type' \
        | tr -d '\r' | sed 's/^/      /'
done

echo
echo "════════ 3. 等隧道恢复 ════════"
for i in $(seq 1 20); do
    c=$(curl -s -o /dev/null -w '%{http_code}' --max-time 12 -H "User-Agent: $UA" "$BASE/v1/health")
    printf "  第 %d 次: %s\n" "$i" "$c"
    [ "$c" = "200" ] && break
    sleep 3
done

echo
echo "════════ 4. 走公网看 cf-cache-status（关键）════════"
echo "  对每个资源连打 3 次，看 MISS -> HIT"
for p in "/" "/shot/pc-main.png" "/favicon.ico" \
         "/download/ykxmz-server-1.8.1.zip" \
         "/download/ykxmz-setup-1.8.1.exe" \
         "/download/ykxmz-watch-1.8.1.apk"; do
    echo "  ── $p ──"
    for i in 1 2 3; do
        hdr=$(curl -sI --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 $2}')
        printf "      第 %d 次: cf-cache-status=%-8s age=%-6s cache-control=%s\n" \
            "$i" "${st:-无}" "${age:-无}" "${cc:-无}"
        sleep 1
    done
done

echo
echo "════════ 5. 结论 ════════"
echo "  如果 .exe/.zip/.apk 一直是 MISS/无，说明 Cloudflare 默认不缓存这些扩展名，"
echo "  需要在 Cloudflare 后台加一条 Cache Rule（我会给出具体配置）。"