2020-04-21 02:21:13 +03:00
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/*
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Copyright [2020] [bvn13]
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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2020-04-20 10:51:50 +03:00
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package com.bvn13.covid19.site.controllers;
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import com.bvn13.covid19.model.entities.CovidStat;
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2020-04-21 02:21:13 +03:00
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import com.bvn13.covid19.model.entities.CovidUpdate;
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import com.bvn13.covid19.model.entities.Region;
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import com.bvn13.covid19.model.entities.StatsProvider;
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2020-04-20 10:51:50 +03:00
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import com.bvn13.covid19.site.model.CovidAllStats;
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import com.bvn13.covid19.site.model.CovidDayStats;
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import com.bvn13.covid19.site.repositories.RegionsRepository;
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import com.bvn13.covid19.site.service.StatisticsPreparator;
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import com.bvn13.covid19.site.service.StatisticsAggregator;
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2020-04-20 10:51:50 +03:00
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import lombok.RequiredArgsConstructor;
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import org.apache.commons.lang3.StringUtils;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.RestController;
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import javax.annotation.PostConstruct;
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import java.time.ZoneId;
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import java.util.*;
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import java.util.stream.Collectors;
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@RequiredArgsConstructor
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@RestController
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@RequestMapping("/stats")
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public class AllStatsController {
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private final StatisticsPreparator statisticsPreparator;
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private final StatisticsAggregator statisticsAggregator;
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private final RegionsRepository regionsRepository;
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@Value("${app.zone-id}")
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private String zoneIdStr;
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private ZoneId zoneId;
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@PostConstruct
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public void init() {
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zoneId = ZoneId.of(zoneIdStr);
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}
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@GetMapping("/all")
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public CovidAllStats getStatistics(@RequestParam(value = "region", required = false) String regionName) {
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if (StringUtils.isNotBlank(regionName)) {
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return constructResponseForRegion(regionName);
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} else {
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return constructResponseForAllRegions();
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}
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}
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private CovidAllStats constructResponseForRegion(String regionName) {
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return regionsRepository.findFirstByName(regionName)
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.map(region -> CovidAllStats.builder()
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.regions(Collections.singletonList(region.getName()))
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.progress(compoundProgressForRegions(Collections.singletonList(region)))
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.build()
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)
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.orElse(CovidAllStats.builder()
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.regions(Collections.singletonList(regionName))
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.progress(Collections.emptyList())
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.build()
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);
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}
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private CovidAllStats constructResponseForAllRegions() {
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return CovidAllStats.builder()
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.regions(statisticsPreparator.findAllRegionsNames())
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.progress(compoundProgressForRegions(regionsRepository.findAll()))
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.build();
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}
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private List<CovidDayStats> compoundProgressForRegions(List<Region> regions) {
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return statisticsPreparator.findAllLastUpdatesPerDay().stream()
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.map(covidUpdate -> prepareDayStats(covidUpdate, regions))
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.sorted(CovidDayStats::compareTo)
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.collect(Collectors.toList());
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}
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private CovidDayStats prepareDayStats(CovidUpdate currentUpdate, List<Region> regions) {
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List<CovidStat> currentStats = findCovidStatsByUpdateIdAndRegion(currentUpdate.getId(), regions);
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Optional<CovidUpdate> prevUpdate = statisticsPreparator.findPrevUpdateByDate(currentUpdate.getDatetime());
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Map<Region, StatsProvider> prevStats = prevUpdate
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.map(covidUpdate -> statisticsPreparator.findCovidStatsByUpdateInfoId(covidUpdate.getId()).stream()
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.collect(Collectors.toMap(CovidStat::getRegion, (cs) -> (StatsProvider) cs))
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)
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.orElseGet(() -> new HashMap<>(0));
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return CovidDayStats.builder()
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.datetime(currentUpdate.getDatetime())
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.updatedOn(currentUpdate.getCreatedOn().atZone(zoneId))
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.stats(statisticsAggregator.prepareStats(currentStats, prevStats))
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.build();
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}
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2020-04-21 02:21:13 +03:00
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private List<CovidStat> findCovidStatsByUpdateIdAndRegion(long updateId, List<Region> regions) {
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return statisticsPreparator.findCovidStatsByUpdateInfoId(updateId).stream()
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.filter(covidStat -> regions.contains(covidStat.getRegion()))
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.collect(Collectors.toList());
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}
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}
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