feat: add volume data

src/pages/trade/api/candles.tsx

@@ -2,15 +2,15 @@ import { useQuery } from '@tanstack/react-query';
 import { useRefetchOnNewBlock } from '@/shared/api/compact-block.ts';
 import { CandleApiResponse } from '@/shared/api/server/candles/types.ts';
 import { usePathSymbols } from '@/pages/trade/model/use-path.ts';
-import { OhlcData } from 'lightweight-charts';
 import { DurationWindow } from '@/shared/utils/duration.ts';
+import { CandleWithVolume } from '@/shared/api/server/candles/utils.ts';
 
 export const useCandles = (durationWindow: DurationWindow) => {
   const { baseSymbol, quoteSymbol } = usePathSymbols();
 
   const query = useQuery({
     queryKey: ['candles', baseSymbol, quoteSymbol, durationWindow],
-    queryFn: async (): Promise<OhlcData[]> => {
+    queryFn: async (): Promise<CandleWithVolume[]> => {
       const paramsObj = {
         baseAsset: baseSymbol,
         quoteAsset: quoteSymbol,

src/pages/trade/ui/chart.tsx

@@ -1,11 +1,12 @@
 import cn from 'clsx';
 import { useEffect, useRef, useState } from 'react';
-import { createChart, IChartApi, OhlcData } from 'lightweight-charts';
+import { createChart, IChartApi } from 'lightweight-charts';
 import { theme } from '@penumbra-zone/ui/theme';
 import { Text } from '@penumbra-zone/ui/Text';
 import { useCandles } from '../api/candles';
 import { observer } from 'mobx-react-lite';
 import { DurationWindow, durationWindows } from '@/shared/utils/duration.ts';
+import { CandleWithVolume } from '@/shared/api/server/candles/utils';
 
 const ChartLoadingState = () => {
   return (
@@ -119,10 +120,11 @@ const ChartLoadingState = () => {
   );
 };
 
-const ChartData = observer(({ candles }: { candles: OhlcData[] }) => {
+const ChartData = observer(({ candles }: { candles: CandleWithVolume[] }) => {
   const chartElRef = useRef<HTMLDivElement>(null);
   const chartRef = useRef<IChartApi>();
   const seriesRef = useRef<ReturnType<IChartApi['addCandlestickSeries']>>();
+  const volumeSeriesRef = useRef<ReturnType<IChartApi['addHistogramSeries']>>();
 
   // Initialize the chart once when the component mounts
   useEffect(() => {
@@ -145,7 +147,7 @@ const ChartData = observer(({ candles }: { candles: OhlcData[] }) => {
         },
       });
 
-      // Initialize the series
+      // Initialize the candlestick series
       seriesRef.current = chartRef.current.addCandlestickSeries({
         upColor: theme.color.success.light,
         downColor: theme.color.destructive.light,
@@ -154,6 +156,31 @@ const ChartData = observer(({ candles }: { candles: OhlcData[] }) => {
         wickDownColor: theme.color.destructive.light,
       });
 
+      // Set the price scale margins for the candlestick series
+      seriesRef.current.priceScale().applyOptions({
+        scaleMargins: {
+          top: 0.1,
+          bottom: 0.4,
+        },
+      });
+
+      // Initialize the volume series
+      volumeSeriesRef.current = chartRef.current.addHistogramSeries({
+        color: theme.color.success.light,
+        priceFormat: {
+          type: 'volume',
+        },
+        priceScaleId: '', // Set as overlay
+      });
+
+      // Set the price scale margins for the volume series
+      volumeSeriesRef.current.priceScale().applyOptions({
+        scaleMargins: {
+          top: 0.7,
+          bottom: 0,
+        },
+      });
+
       chartRef.current.timeScale().fitContent();
     }
 
@@ -167,8 +194,21 @@ const ChartData = observer(({ candles }: { candles: OhlcData[] }) => {
 
   // Update chart when candles change
   useEffect(() => {
-    if (seriesRef.current) {
-      seriesRef.current.setData(candles);
+    if (seriesRef.current && volumeSeriesRef.current) {
+      // Set OHLC data
+      seriesRef.current.setData(candles.map(c => c.ohlc));
+
+      // Set volume data with colors based on price movement
+      volumeSeriesRef.current.setData(
+        candles.map(candle => ({
+          time: candle.ohlc.time,
+          value: candle.volume,
+          color:
+            candle.ohlc.close >= candle.ohlc.open
+              ? theme.color.success.light
+              : theme.color.destructive.light,
+        })),
+      );
       chartRef.current?.timeScale().fitContent();
     }
   }, [candles]);

src/shared/api/server/candles/types.ts

@@ -1,6 +1,6 @@
-import { OhlcData, UTCTimestamp } from 'lightweight-charts';
+import { CandleWithVolume } from './utils';
 
-export type CandleApiResponse = OhlcData<UTCTimestamp>[] | { error: string };
+export type CandleApiResponse = CandleWithVolume[] | { error: string };
 
 export interface DbCandle {
   close: number;