feat: 添加基金历史净值趋势图表功能
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hzm
349
app/components/FundTrendChart.jsx
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349
app/components/FundTrendChart.jsx
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'use client';
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import { useState, useEffect, useMemo, useRef } from 'react';
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import { fetchFundHistory } from '../api/fund';
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import { motion, AnimatePresence } from 'framer-motion';
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import { ChevronIcon } from './Icons';
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import {
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Chart as ChartJS,
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CategoryScale,
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LinearScale,
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PointElement,
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LineElement,
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Title,
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Tooltip,
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Legend,
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Filler
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} from 'chart.js';
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import { Line } from 'react-chartjs-2';
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import {cachedRequest} from "../lib/cacheRequest";
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ChartJS.register(
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CategoryScale,
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LinearScale,
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PointElement,
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LineElement,
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Title,
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Tooltip,
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Legend,
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Filler
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);
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export default function FundTrendChart({ code, isExpanded, onToggleExpand }) {
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const [range, setRange] = useState('1m');
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const [data, setData] = useState([]);
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const [loading, setLoading] = useState(false);
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const [error, setError] = useState(null);
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const chartRef = useRef(null);
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useEffect(() => {
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// If collapsed, don't fetch data unless we have no data yet
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if (!isExpanded && data.length > 0) return;
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let active = true;
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setLoading(true);
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setError(null);
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const cacheKey = `fund_history_${code}_${range}`;
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if (isExpanded) {
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cachedRequest(
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() => fetchFundHistory(code, range),
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cacheKey,
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{ cacheTime: 10 * 60 * 1000 }
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)
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.then(res => {
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if (active) {
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setData(res || []);
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setLoading(false);
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}
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})
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.catch(err => {
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if (active) {
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setError(err);
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setLoading(false);
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}
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});
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}
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return () => { active = false; };
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}, [code, range, isExpanded]);
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const ranges = [
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{ label: '近1月', value: '1m' },
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{ label: '近3月', value: '3m' },
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{ label: '近6月', value: '6m' },
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{ label: '近1年', value: '1y' },
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];
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const change = useMemo(() => {
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if (!data.length) return 0;
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const first = data[0].value;
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const last = data[data.length - 1].value;
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return ((last - first) / first) * 100;
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}, [data]);
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// Red for up, Green for down (CN market style)
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// Hardcoded hex values from globals.css for Chart.js
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const upColor = '#f87171'; // --danger
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const downColor = '#34d399'; // --success
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const lineColor = change >= 0 ? upColor : downColor;
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const chartData = useMemo(() => {
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return {
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labels: data.map(d => d.date),
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datasets: [
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{
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label: '单位净值',
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data: data.map(d => d.value),
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borderColor: lineColor,
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backgroundColor: (context) => {
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const ctx = context.chart.ctx;
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const gradient = ctx.createLinearGradient(0, 0, 0, 200);
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gradient.addColorStop(0, `${lineColor}33`); // 20% opacity
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gradient.addColorStop(1, `${lineColor}00`); // 0% opacity
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return gradient;
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},
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borderWidth: 2,
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pointRadius: 0,
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pointHoverRadius: 4,
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fill: true,
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tension: 0.2
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}
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]
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};
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}, [data, lineColor]);
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const options = useMemo(() => {
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return {
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responsive: true,
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maintainAspectRatio: false,
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plugins: {
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legend: {
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display: false
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},
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tooltip: {
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enabled: false, // 禁用默认 Tooltip，使用自定义绘制
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mode: 'index',
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intersect: false,
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external: () => {} // 禁用外部 HTML tooltip
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}
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},
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scales: {
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x: {
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display: true,
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grid: {
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display: false,
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drawBorder: false
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},
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ticks: {
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color: '#9ca3af',
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font: { size: 10 },
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maxTicksLimit: 4,
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maxRotation: 0
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},
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border: { display: false }
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},
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y: {
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display: true,
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position: 'right',
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grid: {
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color: '#1f2937',
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drawBorder: false,
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tickLength: 0
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},
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ticks: {
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color: '#9ca3af',
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font: { size: 10 },
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count: 5
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},
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border: { display: false }
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}
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},
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interaction: {
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mode: 'index',
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intersect: false,
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},
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onHover: (event, chartElement) => {
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event.native.target.style.cursor = chartElement[0] ? 'crosshair' : 'default';
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}
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};
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}, []);
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const plugins = useMemo(() => [{
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id: 'crosshair',
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afterDraw: (chart) => {
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// 检查是否有激活的点
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let activePoint = null;
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if (chart.tooltip?._active?.length) {
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activePoint = chart.tooltip._active[0];
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} else {
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// 如果 tooltip._active 为空（可能因为 enabled: false 导致内部状态更新机制差异），
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// 尝试从 getActiveElements 获取，这在 Chart.js 3+ 中是推荐方式
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const activeElements = chart.getActiveElements();
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if (activeElements && activeElements.length) {
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activePoint = activeElements[0];
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}
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}
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if (activePoint) {
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const ctx = chart.ctx;
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const x = activePoint.element.x;
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const y = activePoint.element.y;
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const topY = chart.scales.y.top;
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const bottomY = chart.scales.y.bottom;
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const leftX = chart.scales.x.left;
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const rightX = chart.scales.x.right;
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ctx.save();
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ctx.beginPath();
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ctx.setLineDash([3, 3]);
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ctx.lineWidth = 1;
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ctx.strokeStyle = '#9ca3af';
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// Draw vertical line
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ctx.moveTo(x, topY);
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ctx.lineTo(x, bottomY);
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// Draw horizontal line
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ctx.moveTo(leftX, y);
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ctx.lineTo(rightX, y);
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ctx.stroke();
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// 获取 --primary 颜色
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const primaryColor = getComputedStyle(document.documentElement).getPropertyValue('--primary').trim() || '#22d3ee';
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// Draw labels
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ctx.font = '10px sans-serif';
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ctx.textAlign = 'center';
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ctx.textBaseline = 'middle';
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// 获取数据点
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// 优先使用 chart.data 中的数据，避免闭包过时问题
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// activePoint.index 是当前数据集中的索引
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const datasetIndex = activePoint.datasetIndex;
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const index = activePoint.index;
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const labels = chart.data.labels;
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const datasets = chart.data.datasets;
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if (labels && datasets && datasets[datasetIndex] && datasets[datasetIndex].data) {
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const dateStr = labels[index];
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const value = datasets[datasetIndex].data[index];
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if (dateStr !== undefined && value !== undefined) {
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// X axis label (date)
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const textWidth = ctx.measureText(dateStr).width + 8;
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ctx.fillStyle = primaryColor;
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ctx.fillRect(x - textWidth / 2, bottomY, textWidth, 16);
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ctx.fillStyle = '#0f172a'; // --background
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ctx.fillText(dateStr, x, bottomY + 8);
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// Y axis label (value)
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const valueStr = typeof value === 'number' ? value.toFixed(4) : value;
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const valWidth = ctx.measureText(valueStr).width + 8;
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ctx.fillStyle = primaryColor;
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ctx.fillRect(rightX - valWidth, y - 8, valWidth, 16);
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ctx.fillStyle = '#0f172a'; // --background
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ctx.textAlign = 'center';
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ctx.fillText(valueStr, rightX - valWidth / 2, y);
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}
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}
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ctx.restore();
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}
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}
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}], []); // 移除 data 依赖，因为我们直接从 chart 实例读取数据
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return (
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<div style={{ marginTop: 16 }} onClick={(e) => e.stopPropagation()}>
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<div
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style={{ marginBottom: 8, cursor: 'pointer', userSelect: 'none' }}
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className="title"
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onClick={onToggleExpand}
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>
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<div className="row" style={{ width: '100%', flex: 1 }}>
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<div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
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<span>业绩走势</span>
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<ChevronIcon
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width="16"
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height="16"
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className="muted"
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style={{
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transform: !isExpanded ? 'rotate(-90deg)' : 'rotate(0deg)',
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transition: 'transform 0.2s ease'
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}}
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/>
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</div>
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{data.length > 0 && (
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<div style={{ display: 'flex', alignItems: 'center', gap: 8 }}>
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<span className="muted">{ranges.find(r => r.value === range)?.label}涨跌幅</span>
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<span style={{ color: lineColor, fontWeight: 600 }}>
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{change > 0 ? '+' : ''}{change.toFixed(2)}%
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</span>
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</div>
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)}
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</div>
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</div>
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<AnimatePresence>
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{isExpanded && (
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<motion.div
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initial={{ height: 0, opacity: 0 }}
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animate={{ height: 'auto', opacity: 1 }}
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exit={{ height: 0, opacity: 0 }}
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transition={{ duration: 0.3, ease: 'easeInOut' }}
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style={{ overflow: 'hidden' }}
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>
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<div style={{ position: 'relative', height: 180, width: '100%' }}>
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{loading && (
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<div style={{
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position: 'absolute', inset: 0, display: 'flex', alignItems: 'center', justifyContent: 'center',
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background: 'rgba(255,255,255,0.02)', zIndex: 10, backdropFilter: 'blur(2px)'
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}}>
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<span className="muted" style={{ fontSize: '12px' }}>加载中...</span>
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</div>
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)}
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{!loading && data.length === 0 && (
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<div style={{
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position: 'absolute', inset: 0, display: 'flex', alignItems: 'center', justifyContent: 'center',
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background: 'rgba(255,255,255,0.02)', zIndex: 10
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}}>
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<span className="muted" style={{ fontSize: '12px' }}>暂无数据</span>
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</div>
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)}
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{data.length > 0 && (
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<Line ref={chartRef} data={chartData} options={options} plugins={plugins} />
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)}
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</div>
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<div style={{ display: 'flex', gap: 4, marginTop: 12, justifyContent: 'space-between', background: 'rgba(0,0,0,0.2)', padding: 4, borderRadius: 8 }}>
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{ranges.map(r => (
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<button
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key={r.value}
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onClick={(e) => { e.stopPropagation(); setRange(r.value); }}
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style={{
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flex: 1,
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padding: '6px 0',
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fontSize: '11px',
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borderRadius: '6px',
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border: 'none',
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background: range === r.value ? 'rgba(255,255,255,0.1)' : 'transparent',
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color: range === r.value ? 'var(--primary)' : 'var(--muted)',
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cursor: 'pointer',
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transition: 'all 0.2s',
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fontWeight: range === r.value ? 600 : 400
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}}
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>
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{r.label}
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</button>
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))}
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</div>
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</motion.div>
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)}
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</AnimatePresence>
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</div>
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);
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}
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