Function aggregateCandles

src/fixtures/v2Finance.ts:81–103

(
  candles: StockCandlePoint[],
  getGroupKey: (day: string) => string
)

};

const aggregateCandles = (
  candles: StockCandlePoint[],
  getGroupKey: (day: string) => string
) => {
  const groups: StockCandlePoint[] = [];

  candles.forEach((candle) => {
    const key = getGroupKey(candle.day);
    const last = groups[groups.length - 1];

    if (!last || getGroupKey(last.day) !== key) {
      groups.push({ ...candle, day: key });
      return;
    }

    last.close = candle.close;
    last.high = Math.max(last.high, candle.high);
    last.low = Math.min(last.low, candle.low);
    last.volume += candle.volume;
  });

  return groups;
};

export const getStockCandlesForInterval = (
  candles: StockCandlePoint[],