package biz.policy.price;
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import java.math.BigDecimal;
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import foundation.util.MapList;
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public class PriceSelector {
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private int priorityNo;
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private MapList<String, PriceLine> priceList;
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private BigDecimal basePrice;
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public PriceSelector() {
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priceList = new MapList<String, PriceLine>();
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priorityNo = -1;
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}
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public void loadOne(PriceLine priceLine) {
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if (priceLine == null) {
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return;
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}
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if (PriceLine.Type_Standard.equals(priceLine.getTypeCode())) {
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basePrice = priceLine.getPrice();
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}
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int linePriorityNo = priceLine.getPriorityNo();
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//1. 如果行优先级低于当前优先级, 直接退出
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if (linePriorityNo < priorityNo) {
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return;
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}
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//2. 如果行优先级高于当前优先级，需要清空当前列表，添加行
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if (linePriorityNo > priorityNo) {
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priorityNo = linePriorityNo;
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priceList.clear();
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}
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//3. 如果价格已存在，则不加入
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String lineId = priceLine.getId();
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if (priceList.contains(lineId)) {
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return ;
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}
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BigDecimal price = priceLine.getPrice();
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if (price != null) {
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priceList.add(lineId, priceLine);
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return ;
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}
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try {
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PriceLine newLine = priceLine.copy();
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newLine.setPrice(newLine.getDiscountRate().multiply(basePrice));
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priceList.add(lineId, newLine);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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public MapList<String, PriceLine> getPriceList() {
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return priceList;
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}
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public BigDecimal getLowerPrice() {
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int size = priceList.size();
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if (size == 0) {
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return null;
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}
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if (size == 1) {
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BigDecimal result = priceList.get(0).getPrice();
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return new BigDecimal(result.toString());
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}
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else {
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BigDecimal result = priceList.get(0).getPrice();
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BigDecimal current = null;
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for (PriceLine line: priceList) {
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current = line.getPrice();
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if (result.compareTo(current) > 0) {
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result = current;
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}
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}
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return new BigDecimal(result.toString());
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}
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}
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}
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