package com.moral.api.service.impl;
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import com.moral.api.entity.RadarHourlySummary;
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import com.moral.api.mapper.RadarHourlySummaryMapper;
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import com.moral.api.service.HistorySecondRadarService;
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import com.moral.api.service.RadarHourlySummaryService;
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import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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import java.time.LocalDateTime;
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import java.time.format.DateTimeFormatter;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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/**
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* <p>
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* 雷达小时汇总表 服务实现类
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* </p>
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*
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* @author moral
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* @since 2026-09-08
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*/
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@Service
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public class RadarHourlySummaryServiceImpl extends ServiceImpl<RadarHourlySummaryMapper, RadarHourlySummary> implements RadarHourlySummaryService {
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@Autowired
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private HistorySecondRadarService radarService;
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private static final double HEIGHT_STEP = 7.5;
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private static final int PEAK_SEARCH_LIMIT = 200;
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private static final DateTimeFormatter FMT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:00:00");
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@Override
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public void processLastHour() {
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LocalDateTime now = LocalDateTime.now();
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LocalDateTime prev = now.minusHours(1).withMinute(0).withSecond(0).withNano(0);
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processHour(prev.format(FMT));
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}
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@Override
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public void processHour(String hourStart) {
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String hourEnd = nextHour(hourStart);
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List<String> rawList = radarService.queryRawDataByHour(hourStart, hourEnd);
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if (rawList.isEmpty()) {
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return ;
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}
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// 提取 a34004 / a34002
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List<String> a34004List = new ArrayList<>();
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List<String> a34002List = new ArrayList<>();
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for (String json : rawList) {
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a34004List.add(extractJsonField(json, "a34004-Avg"));
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a34002List.add(extractJsonField(json, "a34002-Avg"));
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}
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double[] avg04 = averageByHeight(a34004List);
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double[] avg02 = averageByHeight(a34002List);
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R r04 = analyze(avg04);
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R r02 = analyze(avg02);
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RadarHourlySummary entity = new RadarHourlySummary();
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entity.setTime(LocalDateTime.parse(hourStart, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
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entity.setRadarData(buildRadarJson(avg04, avg02));
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entity.setA34004PeakHeight(BigDecimal.valueOf(r04.peak));
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entity.setA34004DropHeight(BigDecimal.valueOf(r04.drop));
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entity.setA34002PeakHeight(BigDecimal.valueOf(r02.peak));
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entity.setA34002DropHeight(BigDecimal.valueOf(r02.drop));
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this.baseMapper.insert(entity);
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}
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// ======================== 算法 ========================
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private double[] averageByHeight(List<String> rawList) {
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List<double[]> rows = new ArrayList<>();
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int minLen = Integer.MAX_VALUE;
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for (String s : rawList) {
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double[] arr = parseToArray(s);
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rows.add(arr);
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if (arr.length < minLen) minLen = arr.length;
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}
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double[] avg = new double[minLen];
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int n = rows.size();
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for (int i = 0; i < minLen; i++) {
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double sum = 0;
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for (double[] row : rows) sum += row[i];
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BigDecimal bd = new BigDecimal(String.valueOf(sum / n));
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BigDecimal resultBd = bd.setScale(2, RoundingMode.HALF_UP);
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avg[i] =resultBd.doubleValue();
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}
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return avg;
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}
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private R analyze(double[] values) {
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int searchEnd = Math.min(PEAK_SEARCH_LIMIT, values.length);
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int peakIdx = 0;
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double peakVal = values[0];
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for (int i = 1; i < searchEnd; i++) {
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if (values[i] > peakVal) { peakVal = values[i]; peakIdx = i; }
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}
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double peakHeight = peakIdx * HEIGHT_STEP;
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System.out.println("最大值 》》》》》》》"+values[peakIdx]+" 》》》》最大高度>>>>>"+peakHeight+" 》》》》最大高度位置>>>>>"+peakIdx);
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int dropIdx = -1;
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if(PEAK_SEARCH_LIMIT-peakIdx == 1){
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searchEnd = searchEnd+60;
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}
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double base = findBaseValue(values, peakIdx, searchEnd);
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for (int i = peakIdx + 1; i < searchEnd; i++) {
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if (values[i] <= base * 1.05) { dropIdx = i; break; }
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}
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double dropHeight = dropIdx > 0 ? dropIdx * HEIGHT_STEP : 0;
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System.out.println("最小值 》》》》》》》"+values[dropIdx]+" 》》》》最小高度>>>>>"+dropHeight+" 米 》》》》最小高度位置>>>>>"+dropIdx);
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return new R(peakHeight, dropHeight);
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}
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private double findBaseValue(double[] values, int peakIdx, int end) {
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List<Double> tail = new ArrayList<>();
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for (int i = peakIdx + 1; i < end; i++) tail.add(values[i]);
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if (tail.isEmpty()) return 0;
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Collections.sort(tail);
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if (tail.size() >= 2) {
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double a = tail.get(0), b = tail.get(1);
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if (b - a > 2.0 || (a > 0 && b / a > 1.5)) return b;
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}
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return tail.get(0);
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}
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// ======================== 工具 ========================
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private String extractJsonField(String json, String field) {
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String key = "\"" + field + "\"";
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int s = json.indexOf(key);
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if (s == -1) return "";
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s = json.indexOf(":", s) + 1;
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while (s < json.length() && (json.charAt(s) == ' ' || json.charAt(s) == '"')) s++;
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int e = json.indexOf("\"", s);
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if (e == -1) e = json.indexOf(",", s);
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if (e == -1) e = json.indexOf("}", s);
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if (e == -1) return "";
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while (e > s && json.charAt(e - 1) == '"') e--;
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return json.substring(s, e);
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}
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private double[] parseToArray(String raw) {
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if (raw == null || raw.isEmpty()) return new double[0];
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String[] parts = raw.split("\\*");
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double[] arr = new double[parts.length];
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for (int i = 0; i < parts.length; i++) {
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try { arr[i] = Double.parseDouble(parts[i]); }
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catch (NumberFormatException e) { arr[i] = 0; }
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}
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return arr;
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}
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private String buildRadarJson(double[] a04, double[] a02) {
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StringBuilder sb = new StringBuilder("{\"a34004-Avg\":[");
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for (int i = 0; i < a04.length; i++) {
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if (i > 0) sb.append(",");
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sb.append(String.format("%.6f", a04[i]));
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}
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sb.append("],\"a34002-Avg\":[");
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for (int i = 0; i < a02.length; i++) {
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if (i > 0) sb.append(",");
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sb.append(String.format("%.6f", a02[i]));
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}
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sb.append("]}");
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return sb.toString();
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}
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private String nextHour(String timeStr) {
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LocalDateTime time = LocalDateTime.parse(timeStr, FMT);
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LocalDateTime nextTime = time.plusHours(1);
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return nextTime.format(FMT);
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}
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static class R {
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double peak, drop;
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R(double peak, double drop) { this.peak = peak; this.drop = drop; }
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}
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}
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