git.basschouten.com Git - openhab-addons.git/blob

   1 /**
   2  * Copyright (c) 2010-2023 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.energidataservice.internal;
  14
  15 import java.math.BigDecimal;
  16 import java.time.Clock;
  17 import java.time.Instant;
  18 import java.time.LocalDateTime;
  19 import java.time.LocalTime;
  20 import java.time.temporal.ChronoUnit;
  21 import java.util.Collection;
  22 import java.util.Map;
  23 import java.util.Map.Entry;
  24 import java.util.concurrent.ConcurrentHashMap;
  25
  26 import org.eclipse.jdt.annotation.NonNullByDefault;
  27 import org.eclipse.jdt.annotation.Nullable;
  28 import org.openhab.binding.energidataservice.internal.api.dto.DatahubPricelistRecord;
  29
  30 /**
  31  * Parses results from {@link DatahubPricelistRecords} into map of hourly tariffs.
  32  *
  33  * @author Jacob Laursen - Initial contribution
  34  */
  35 @NonNullByDefault
  36 public class PriceListParser {
  37
  38     private final Clock clock;
  39
  40     public PriceListParser() {
  41         this(Clock.system(EnergiDataServiceBindingConstants.DATAHUB_TIMEZONE));
  42     }
  43
  44     public PriceListParser(Clock clock) {
  45         this.clock = clock;
  46     }
  47
  48     public Map<Instant, BigDecimal> toHourly(Collection<DatahubPricelistRecord> records) {
  49         Map<Instant, BigDecimal> totalMap = new ConcurrentHashMap<>(CacheManager.TARIFF_MAX_CACHE_SIZE);
  50         records.stream().map(record -> record.chargeTypeCode()).distinct().forEach(chargeTypeCode -> {
  51             Map<Instant, BigDecimal> currentMap = toHourly(records, chargeTypeCode);
  52             for (Entry<Instant, BigDecimal> current : currentMap.entrySet()) {
  53                 BigDecimal total = totalMap.get(current.getKey());
  54                 if (total == null) {
  55                     total = BigDecimal.ZERO;
  56                 }
  57                 totalMap.put(current.getKey(), total.add(current.getValue()));
  58             }
  59         });
  60
  61         return totalMap;
  62     }
  63
  64     public Map<Instant, BigDecimal> toHourly(Collection<DatahubPricelistRecord> records, String chargeTypeCode) {
  65         Map<Instant, BigDecimal> tariffMap = new ConcurrentHashMap<>(CacheManager.TARIFF_MAX_CACHE_SIZE);
  66
  67         Instant firstHourStart = Instant.now(clock).minus(CacheManager.NUMBER_OF_HISTORIC_HOURS, ChronoUnit.HOURS)
  68                 .truncatedTo(ChronoUnit.HOURS);
  69         Instant lastHourStart = Instant.now(clock).truncatedTo(ChronoUnit.HOURS).plus(2, ChronoUnit.DAYS)
  70                 .truncatedTo(ChronoUnit.DAYS);
  71
  72         LocalDateTime previousValidFrom = LocalDateTime.MAX;
  73         LocalDateTime previousValidTo = LocalDateTime.MIN;
  74         Map<LocalTime, BigDecimal> tariffs = Map.of();
  75         for (Instant hourStart = firstHourStart; hourStart
  76                 .isBefore(lastHourStart); hourStart = hourStart.plus(1, ChronoUnit.HOURS)) {
  77             LocalDateTime localDateTime = hourStart.atZone(EnergiDataServiceBindingConstants.DATAHUB_TIMEZONE)
  78                     .toLocalDateTime();
  79             if (localDateTime.compareTo(previousValidFrom) < 0 || localDateTime.compareTo(previousValidTo) >= 0) {
  80                 DatahubPricelistRecord priceList = getTariffs(records, localDateTime, chargeTypeCode);
  81                 if (priceList != null) {
  82                     tariffs = priceList.getTariffMap();
  83                     previousValidFrom = priceList.validFrom();
  84                     previousValidTo = priceList.validTo();
  85                 } else {
  86                     tariffs = Map.of();
  87                 }
  88             }
  89
  90             LocalTime localTime = LocalTime
  91                     .of(hourStart.atZone(EnergiDataServiceBindingConstants.DATAHUB_TIMEZONE).getHour(), 0);
  92             BigDecimal tariff = tariffs.get(localTime);
  93             if (tariff != null) {
  94                 tariffMap.put(hourStart, tariff);
  95             }
  96         }
  97
  98         return tariffMap;
  99     }
 100
 101     private @Nullable DatahubPricelistRecord getTariffs(Collection<DatahubPricelistRecord> records,
 102             LocalDateTime localDateTime, String chargeTypeCode) {
 103         return records.stream()
 104                 .filter(record -> localDateTime.compareTo(record.validFrom()) >= 0
 105                         && localDateTime.compareTo(record.validTo()) < 0
 106                         && record.chargeTypeCode().equals(chargeTypeCode))
 107                 .findFirst().orElse(null);
 108     }
 109 }