feat: kline page with lightweight-charts + /api/kline OHLC aggregation endpoint
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@ -126,8 +126,63 @@ async def get_snapshots(hours: int = 24, limit: int = 5000):
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"hours": hours,
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"data": [dict(r) for r in rows]
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}
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set_cache("rates", result)
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return result
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@app.get("/api/kline")
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async def get_kline(symbol: str = "BTC", interval: str = "5m", limit: int = 500):
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"""
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从 rate_snapshots 聚合K线数据
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symbol: BTC | ETH
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interval: 1m | 5m | 30m | 1h | 4h | 8h | 1d | 1w | 1M
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返回: [{time, open, high, low, close, price_open, price_high, price_low, price_close}]
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"""
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interval_secs = {
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"1m": 60, "5m": 300, "30m": 1800,
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"1h": 3600, "4h": 14400, "8h": 28800,
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"1d": 86400, "1w": 604800, "1M": 2592000,
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}
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bar_secs = interval_secs.get(interval, 300)
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rate_col = "btc_rate" if symbol.upper() == "BTC" else "eth_rate"
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price_col = "btc_price" if symbol.upper() == "BTC" else "eth_price"
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# 查询足够多的原始数据（limit根K * bar_secs最多需要的时间范围）
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since = int(time.time()) - bar_secs * limit
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conn = sqlite3.connect(DB_PATH)
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rows = conn.execute(
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f"SELECT ts, {rate_col} as rate, {price_col} as price FROM rate_snapshots WHERE ts >= ? ORDER BY ts ASC",
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(since,)
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).fetchall()
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conn.close()
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if not rows:
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return {"symbol": symbol, "interval": interval, "data": []}
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# 按bar_secs分组聚合OHLC
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bars: dict = {}
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for ts, rate, price in rows:
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bar_ts = (ts // bar_secs) * bar_secs
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if bar_ts not in bars:
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bars[bar_ts] = {
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"time": bar_ts,
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"open": rate, "high": rate, "low": rate, "close": rate,
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"price_open": price, "price_high": price, "price_low": price, "price_close": price,
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}
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else:
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b = bars[bar_ts]
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b["high"] = max(b["high"], rate)
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b["low"] = min(b["low"], rate)
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b["close"] = rate
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b["price_high"] = max(b["price_high"], price)
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b["price_low"] = min(b["price_low"], price)
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b["price_close"] = price
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data = sorted(bars.values(), key=lambda x: x["time"])[-limit:]
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# 转换为百分比（费率）
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for b in data:
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for k in ("open", "high", "low", "close"):
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b[k] = round(b[k] * 100, 6)
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return {"symbol": symbol, "interval": interval, "count": len(data), "data": data}
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@app.get("/api/history")
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190
frontend/app/kline/page.tsx
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190
frontend/app/kline/page.tsx
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@ -0,0 +1,190 @@
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"use client";
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import { useEffect, useRef, useState, useCallback } from "react";
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import { createChart, ColorType, CandlestickSeries, LineSeries } from "lightweight-charts";
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const INTERVALS = [
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{ label: "1分钟", value: "1m" },
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{ label: "5分钟", value: "5m" },
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{ label: "30分钟", value: "30m" },
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{ label: "1小时", value: "1h" },
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{ label: "4小时", value: "4h" },
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{ label: "8小时", value: "8h" },
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{ label: "日线", value: "1d" },
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{ label: "周线", value: "1w" },
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{ label: "月线", value: "1M" },
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];
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interface KBar {
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time: number;
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open: number;
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high: number;
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low: number;
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close: number;
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price_open: number;
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price_high: number;
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price_low: number;
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price_close: number;
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}
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function chartOptions(height: number) {
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return {
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layout: {
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background: { type: ColorType.Solid, color: "#ffffff" },
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textColor: "#64748b",
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fontSize: 11,
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},
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grid: {
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vertLines: { color: "#f1f5f9" },
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horzLines: { color: "#f1f5f9" },
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},
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crosshair: { mode: 1 },
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timeScale: {
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borderColor: "#e2e8f0",
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timeVisible: true,
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secondsVisible: false,
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},
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rightPriceScale: { borderColor: "#e2e8f0" },
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height,
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};
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}
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export default function KlinePage() {
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const rateRef = useRef<HTMLDivElement>(null);
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const priceRef = useRef<HTMLDivElement>(null);
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const [symbol, setSymbol] = useState<"BTC" | "ETH">("BTC");
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const [interval, setInterval] = useState("5m");
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const [count, setCount] = useState(0);
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const [loading, setLoading] = useState(true);
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const rateChartRef = useRef<ReturnType<typeof createChart> | null>(null);
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const priceChartRef = useRef<ReturnType<typeof createChart> | null>(null);
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const fetchAndRender = useCallback(async () => {
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try {
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const r = await fetch(`/api/kline?symbol=${symbol}&interval=${interval}&limit=500`);
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const json = await r.json();
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const bars: KBar[] = json.data || [];
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setCount(json.count || 0);
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if (!rateRef.current || !priceRef.current) return;
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// 销毁旧图表
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rateChartRef.current?.remove();
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priceChartRef.current?.remove();
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// 费率K线
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const rateChart = createChart(rateRef.current, chartOptions(260));
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rateChartRef.current = rateChart;
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const rateSeries = rateChart.addSeries(CandlestickSeries, {
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upColor: "#16a34a",
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downColor: "#dc2626",
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borderUpColor: "#16a34a",
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borderDownColor: "#dc2626",
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wickUpColor: "#16a34a",
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wickDownColor: "#dc2626",
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});
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rateSeries.setData(bars.map(b => ({
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time: b.time as any,
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open: b.open,
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high: b.high,
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low: b.low,
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close: b.close,
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})));
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rateChart.timeScale().fitContent();
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// 价格K线
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const priceChart = createChart(priceRef.current, chartOptions(260));
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priceChartRef.current = priceChart;
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const priceSeries = priceChart.addSeries(CandlestickSeries, {
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upColor: "#2563eb",
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downColor: "#7c3aed",
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borderUpColor: "#2563eb",
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borderDownColor: "#7c3aed",
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wickUpColor: "#2563eb",
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wickDownColor: "#7c3aed",
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});
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priceSeries.setData(bars.map(b => ({
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time: b.time as any,
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open: b.price_open,
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high: b.price_high,
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low: b.price_low,
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close: b.price_close,
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})));
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priceChart.timeScale().fitContent();
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} catch (e) {
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console.error(e);
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} finally {
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setLoading(false);
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}
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}, [symbol, interval]);
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useEffect(() => {
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setLoading(true);
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fetchAndRender();
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const iv = window.setInterval(fetchAndRender, 30_000);
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return () => {
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window.clearInterval(iv);
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rateChartRef.current?.remove();
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priceChartRef.current?.remove();
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rateChartRef.current = null;
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priceChartRef.current = null;
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};
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}, [fetchAndRender]);
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return (
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<div className="space-y-5">
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{/* 标题+控制栏 */}
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<div className="flex flex-wrap items-center justify-between gap-3">
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<div>
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<h1 className="text-2xl font-bold text-slate-900">费率 K 线</h1>
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<p className="text-slate-500 text-sm mt-1">
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本地2秒粒度数据聚合 · 已记录 <span className="text-blue-600 font-medium">{count.toLocaleString()}</span> 根K线
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</p>
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</div>
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<div className="flex flex-wrap gap-2 text-sm">
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{/* 币种 */}
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{(["BTC", "ETH"] as const).map(s => (
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<button key={s} onClick={() => setSymbol(s)}
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className={`px-3 py-1.5 rounded-lg border font-medium transition-colors ${symbol === s ? "bg-blue-600 text-white border-blue-600" : "border-slate-200 text-slate-600 hover:border-blue-400"}`}>
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{s}
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</button>
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))}
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<span className="w-px bg-slate-200 mx-1" />
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{/* 周期 */}
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{INTERVALS.map(iv => (
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<button key={iv.value} onClick={() => setInterval(iv.value)}
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className={`px-3 py-1.5 rounded-lg border transition-colors ${interval === iv.value ? "bg-slate-800 text-white border-slate-800" : "border-slate-200 text-slate-600 hover:border-slate-400"}`}>
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{iv.label}
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</button>
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))}
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</div>
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</div>
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{loading && <div className="text-slate-400 py-8 text-center">加载中...</div>}
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{/* 费率K线 */}
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<div className="rounded-xl border border-slate-200 bg-white shadow-sm p-4">
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<div className="flex items-center justify-between mb-2">
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<h2 className="text-slate-700 font-semibold text-sm">{symbol} 资金费率 K 线（%）</h2>
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<span className="text-xs text-slate-400">绿涨红跌 · 代表多头情绪强弱</span>
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</div>
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<div ref={rateRef} className="w-full" style={{ height: 260 }} />
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</div>
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{/* 价格K线 */}
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<div className="rounded-xl border border-slate-200 bg-white shadow-sm p-4">
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<div className="flex items-center justify-between mb-2">
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<h2 className="text-slate-700 font-semibold text-sm">{symbol} 标记价格 K 线（USD）</h2>
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<span className="text-xs text-slate-400">蓝涨紫跌 · 与费率对比观察趋势</span>
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</div>
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<div ref={priceRef} className="w-full" style={{ height: 260 }} />
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</div>
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<div className="rounded-lg border border-blue-100 bg-blue-50 px-5 py-3 text-sm text-slate-600">
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<span className="text-blue-600 font-medium">说明：</span>
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数据来自本地rate_snapshots表（每2秒一条），在前端聚合为各时间周期K线，每30秒自动刷新。数据仅从露露服务器启动后开始积累，历史越长越有价值。
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</div>
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</div>
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);
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}
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@ -4,7 +4,8 @@ import { useState } from "react";
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const navLinks = [
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{ href: "/", label: "仪表盘" },
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{ href: "/live", label: "实时变动" },
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{ href: "/kline", label: "K线" },
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{ href: "/live", label: "实时" },
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{ href: "/history", label: "历史" },
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{ href: "/signals", label: "信号" },
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{ href: "/about", label: "说明" },
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@ -16,7 +16,8 @@
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"react": "19.2.3",
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"react-dom": "19.2.3",
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"recharts": "^3.7.0",
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"tailwind-merge": "^3.5.0"
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"tailwind-merge": "^3.5.0",
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"lightweight-charts": "^5.0.0"
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},
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"devDependencies": {
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"@tailwindcss/postcss": "^4",
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