6c08a68413
性能与用户体验全面优化
前端性能:
- 移除 Three.js 依赖(~600KB),天气粒子改为纯 CSS 动画 + Canvas 2D
- Google Fonts 切换为 next/font 自托管,消除跨域字体请求
- 合并 ScanTerminalLightTheme.module.css (37KB) 到主 CSS,亮/暗主题统一用 CSS 变量
- 新增 /api/dashboard/init 聚合端点,首次加载 4 次往返 → 1 次
- 添加 Service Worker 静态资源缓存,修复 PWA manifest 配置
用户体验:
- 新增全局错误边界 error.tsx / global-error.tsx,崩溃不再白屏
- 决策卡和城市详情的更新时间改为相对时间("15秒前"),每秒自动刷新
- 数据陈旧时状态标签从青色切换为琥珀色提示
DEB 算法增强:
- 市场扫描路径接入 Open-Meteo 多模型数据(ECMWF/GFS/ICON/JMA/HRDPS 等)
- MAE 计算加入时间衰减(decay_factor=0.85),近期模型误差权重更高
Scope-risk: MEDIUM — 全量 170 测试通过,前端 TypeScript/build 通过,ruff 零告警
Tested: python -m pytest -q (170 passed), npx tsc --noEmit (0 errors), npm run build (success), ruff check .
@
38 lines
1.2 KiB
TypeScript
38 lines
1.2 KiB
TypeScript
"use client";
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import { useEffect, useState } from "react";
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function relativeTime(date: Date, now: Date): string {
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const diffMs = now.getTime() - date.getTime();
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if (diffMs < 0) return "刚刚";
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const seconds = Math.floor(diffMs / 1000);
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if (seconds < 10) return "刚刚";
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if (seconds < 60) return `${seconds}秒前`;
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const minutes = Math.floor(seconds / 60);
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if (minutes < 60) return `${minutes}分钟前`;
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const hours = Math.floor(minutes / 60);
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if (hours < 24) return `${hours}小时前`;
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const days = Math.floor(hours / 24);
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return `${days}天前`;
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}
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export function useRelativeTime(isoString: string | null | undefined): string {
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const [tick, setTick] = useState(0);
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const date = isoString ? new Date(isoString) : null;
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useEffect(() => {
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if (!date) return;
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const interval = setInterval(() => setTick((n) => n + 1), 30_000);
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const onVisible = () => setTick((n) => n + 1);
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document.addEventListener("visibilitychange", onVisible);
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return () => {
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clearInterval(interval);
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document.removeEventListener("visibilitychange", onVisible);
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};
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}, [date]);
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if (!date || isNaN(date.getTime())) return "";
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return relativeTime(date, new Date());
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}
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