package com.moral.util;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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public class AQICalculation {
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public static Map<String, Object> hourlyAQI(Map<String, Double> map){
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List<Double> AQIList = new ArrayList<>();
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for (Map.Entry<String, Double> entry : map.entrySet()) {
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String key = entry.getKey();
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Double value = entry.getValue();
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Double PM2_5AQI;
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Double PM10AQI;
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Double SO2AQI;
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Double NO2AQI;
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Double COAQI;
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Double O3AQI;
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switch (key) {
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case "e1":PM2_5AQI = PM2_5AQI(value);
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AQIList.add(PM2_5AQI);
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break;
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case "e2":PM10AQI = PM10AQI(value);
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AQIList.add(PM10AQI);
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break;
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case "e11":SO2AQI = SO2AQI(value);
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AQIList.add(SO2AQI);
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break;
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case "e16":NO2AQI = NO2AQI(value);
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AQIList.add(NO2AQI);
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break;
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case "e10":COAQI = COAQI(value);
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AQIList.add(COAQI);
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break;
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case "e15":O3AQI = O3AQI(value);
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AQIList.add(O3AQI);
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break;
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default:
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break;
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}
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}
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Double AQIMAX = Collections.max(AQIList);
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Map<String, Object> returnMap = new HashMap<>();
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returnMap.put("AQI", AQIMAX);
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return returnMap;
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}
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static double PM2_5AQI(Double value) {
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Double result = (double) 0;
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if(value<=0) {
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result=(double) 0;
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}else if (value<=35) {
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result = 50/35*(value-0)+0;
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}else if (value<=75) {
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result = 50/40*(value-35)+50;
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}else if (value<=115) {
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result = 50/40*(value-75)+100;
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}else if (value<=150) {
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result = 50/35*(value-115)+150;
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}else if (value<=250) {
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result = 100/100*(value-150)+200;
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}else if (value<=350) {
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result = 100/100*(value-250)+300;
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}else {
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result = 100/150*(value-350)+400;
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}
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return result;
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}
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static double PM10AQI(Double value) {
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Double result = (double) 0;
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if(value<=0) {
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result=(double) 0;
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}else if (value<=50) {
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result = 50/50*(value-0)+0;
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}else if (value<=150) {
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result = 50/100*(value-50)+50;
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}else if (value<=250) {
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result = 50/100*(value-150)+100;
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}else if (value<=350) {
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result = 50/100*(value-250)+150;
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}else if (value<=420) {
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result = 100/70*(value-350)+200;
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}else if (value<=500) {
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result = 100/80*(value-420)+300;
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}else {
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result = 100/100*(value-500)+400;
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}
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return result;
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}
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static double SO2AQI(Double value) {
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Double result = (double) 0;
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if(value<=0) {
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result=(double) 0;
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}else if (value<=150) {
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result = 50/150*(value-0)+0;
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}else if (value<=500) {
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result = 50/350*(value-150)+50;
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}else if (value<=650) {
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result = 50/150*(value-500)+100;
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}else {
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result = 50/150*(value-650)+150;
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}
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return result;
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}
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static double NO2AQI(Double value) {
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Double result = (double) 0;
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if(value<=0) {
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result=(double) 0;
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}else if (value<=100) {
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result = 50/100*(value-0)+0;
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}else if (value<=200) {
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result = 50/100*(value-100)+50;
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}else if (value<=700) {
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result = 50/500*(value-200)+100;
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}else if (value<=1200) {
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result = 50/500*(value-700)+150;
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}else if (value<=2340) {
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result = 100/1140*(value-1200)+200;
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}else if (value<=3090) {
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result = 100/750*(value-2340)+300;
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}else {
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result = 100/750*(value-3090)+400;
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}
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return result;
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}
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static double COAQI(Double value) {
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Double result = (double) 0;
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if(value<=0) {
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result=(double) 0;
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}else if (value<=5) {
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result = 50/5*(value-0)+0;
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}else if (value<=10) {
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result = 50/5*(value-5)+50;
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}else if (value<=35) {
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result = 50/25*(value-10)+100;
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}else if (value<=60) {
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result = 50/25*(value-35)+150;
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}else if (value<=90) {
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result = 100/30*(value-60)+200;
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}else if (value<=120) {
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result = 100/30*(value-90)+300;
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}else {
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result = 100/30*(value-120)+400;
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}
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return result;
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}
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static double O3AQI(Double value) {
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Double result = (double) 0;
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if(value<=0) {
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result=(double) 0;
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}else if (value<=100) {
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result = 50/100*(value-0)+0;
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}else if (value<=160) {
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result = 50/60*(value-100)+50;
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}else if (value<=215) {
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result = 50/55*(value-160)+100;
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}else if (value<=265) {
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result = 50/150*(value-215)+150;
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}else if (value<=800) {
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result = 100/535*(value-265)+200;
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}else if (value<=2100) {
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result = 100/12*(value-800)+300;
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}else {
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result = 100/12*(value-48)+400;
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}
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return result;
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}
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}
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