# -*- coding: utf-8 -*-
r'''从本机测公网延迟 —— 这是真实用户路径。

为什么不在设备上测：
    设备上 curl 自己的公网域名，流量要出到 Cloudflare 边缘再经隧道
    绕回同一台设备，是"发夹回路"，最坏情况。
    真实用户（手表/电脑）在别处，路径短得多。
'''
from __future__ import annotations

import statistics
import sys
import time
import urllib.error
import urllib.request

URL = "https://relay.xxmxxs.top/"
HEALTH = "https://relay.xxmxxs.top/v1/health"
HEADERS = {"User-Agent": "LanRemote/1.4.0"}


def measure(url: str, rounds: int) -> list:
    times = []
    for i in range(rounds):
        req = urllib.request.Request(url, headers=HEADERS)
        start = time.perf_counter()
        try:
            with urllib.request.urlopen(req, timeout=25) as resp:
                resp.read()
                if resp.status == 200:
                    times.append(time.perf_counter() - start)
        except (urllib.error.URLError, OSError, TimeoutError):
            pass
        time.sleep(0.4)
    return times


def report(label: str, times: list, rounds: int) -> None:
    if not times:
        print("    %s: 全部失败" % label)
        return
    print("    %s: 可用 %d/%d" % (label, len(times), rounds))
    print("      平均 %.0f ms   中位 %.0f ms   最快 %.0f ms   最慢 %.0f ms"
          % (statistics.mean(times) * 1000,
             statistics.median(times) * 1000,
             min(times) * 1000,
             max(times) * 1000))


def main() -> int:
    print("  公网真实路径测试（30 次）")
    print()
    report("官网首页", measure(URL, 30), 30)
    print()
    report("健康接口", measure(HEALTH, 20), 20)
    return 0


if __name__ == "__main__":
    sys.exit(main())