private void calTrendMaMonitor(
TrendMaMonitor trendMaMonitor, Date date, BigDecimal prodPrice, BigDecimal maPrice) {
if (trendMaMonitor.getCalDate() == null) {
trendMaMonitor.setCalDate(date);
trendMaMonitor.setProdPrice(prodPrice);
trendMaMonitor.setMaPrice(maPrice);
trendMaMonitor.setDiff(maPrice.subtract(prodPrice).divide(prodPrice, 4, RoundingMode.FLOOR));
trendMaMonitor.setTrendDays(1);
} else if (trendMaMonitor.getCalDate().before(date)) {
BigDecimal lastDiff = trendMaMonitor.getDiff();
BigDecimal diff = maPrice.subtract(prodPrice).divide(prodPrice, 4, RoundingMode.FLOOR);
trendMaMonitor.setCalDate(date);
trendMaMonitor.setProdPrice(prodPrice);
trendMaMonitor.setMaPrice(maPrice);
trendMaMonitor.setDiff(diff);
if (diff.compareTo(BigDecimal.ZERO) == 0) {
trendMaMonitor.setTrendDays(trendMaMonitor.getTrendDays() + 1);
trendMaMonitor.setReturnDays(0);
} else if (lastDiff.compareTo(BigDecimal.ZERO) == 0) {
trendMaMonitor.setTrendDays(trendMaMonitor.getTrendDays() + 1);
trendMaMonitor.setReturnDays(null);
} else if (diff.compareTo(BigDecimal.ZERO) * lastDiff.compareTo(BigDecimal.ZERO) > 0) {
trendMaMonitor.setTrendDays(trendMaMonitor.getTrendDays() + 1);
BigDecimal absDiff = diff.abs();
BigDecimal absLastDiff = lastDiff.abs();
if (absLastDiff.compareTo(absDiff) > 0) {
int returnDays =
absDiff.divide(absLastDiff.subtract(absDiff), 0, RoundingMode.UP).intValue();
trendMaMonitor.setReturnDays(returnDays);
} else {
trendMaMonitor.setReturnDays(null);
}
} else if (diff.compareTo(BigDecimal.ZERO) * lastDiff.compareTo(BigDecimal.ZERO) < 0) {
trendMaMonitor.setTrendDays(1);
trendMaMonitor.setReturnDays(0);
}
}
}