Remove obsoleted advanced channel hourly-prices (#16190)

Signed-off-by: Jacob Laursen <jacob-github@vindvejr.dk>

bundles/org.openhab.binding.energidataservice/README.md

@@ -55,7 +55,6 @@ It will not impact channels, see [Electricity Tax](#electricity-tax) for further
 | transmission-grid-tariff | Number:EnergyPrice | Transmission grid tariff in DKK per kWh                                        | no       |
 | electricity-tax          | Number:EnergyPrice | Electricity tax in DKK per kWh                                                 | no       |
 | reduced-electricity-tax  | Number:EnergyPrice | Reduced electricity tax in DKK per kWh. For electric heating customers only    | no       |
-| hourly-prices            | String             | JSON array with hourly prices from 24 hours ago and onward                     | yes      |
 
 _Please note:_ There is no channel providing the total price.
 Instead, create a group item with `SUM` as aggregate function and add the individual price items as children.
@@ -142,48 +141,16 @@ This reduced rate is made available through channel `reduced-electricity-tax`.
 The binding cannot determine or manage rate variations as they depend on metering data.
 Usually `reduced-electricity-tax` is preferred when using electricity for heating.
 
-#### Hourly Prices
-
-The format of the `hourly-prices` JSON array is as follows:
-
-```json
-[
-	{
-		"hourStart": "2023-09-19T18:00:00Z",
-		"spotPrice": 0.0,
-		"spotPriceCurrency": "DKK",
-		"gridTariff": 0.0,
-		"systemTariff": 0.054,
-		"transmissionGridTariff": 0.058,
-		"electricityTax": 0.697,
-		"reducedElectricityTax": 0.008
-	},
-	{
-		"hourStart": "2023-09-19T19:00:00Z",
-		"spotPrice": -0.00052,
-		"spotPriceCurrency": "DKK",
-		"gridTariff": 0.0,
-		"systemTariff": 0.054,
-		"transmissionGridTariff": 0.058,
-		"electricityTax": 0.697,
-		"reducedElectricityTax": 0.008
-	}
-]
-```
-
-Future spot prices for the next day are usually available around 13:00 CET and are fetched around that time.
-Historic prices older than 24 hours are removed from the JSON array each hour.
-
 ## Thing Actions
 
-Thing actions can be used to perform calculations as well as import prices directly into rules without deserializing JSON from the [hourly-prices](#hourly-prices) channel.
+Thing actions can be used to perform calculations as well as import prices directly into rules without relying on persistence.
-This is more convenient, much faster, and provides automatic summation of the price components of interest.
+This is convenient, fast, and provides automatic summation of the price components of interest.
 
 Actions use cached data for performing operations.
 Since data is only fetched when an item is linked to a channel, there might not be any cached data available.
 In this case the data will be fetched on demand and cached afterwards.
 The first action triggered on a given day may therefore be a bit slower, and is also prone to failing if the server call fails for any reason.
-This potential problem can be prevented by linking the individual channels to items, or by linking the `hourly-prices` channel to an item.
+This potential problem can be prevented by linking the individual channels to items.
 
 ### `calculateCheapestPeriod`
 
@@ -342,7 +309,7 @@ The parameter `priceComponents` is a case-insensitive comma-separated list of pr
 These components can be requested:
 
 | Price component        | Description              |
-|------------------------|-------------------------|
+|------------------------|--------------------------|
 | SpotPrice              | Spot price               |
 | GridTariff             | Grid tariff              |
 | SystemTariff           | System tariff            |
@@ -380,9 +347,26 @@ Number GridTariff "Current Grid Tariff" <price> (TotalPrice) { channel="energida
 Number SystemTariff "Current System Tariff" <price> (TotalPrice) { channel="energidataservice:service:energidataservice:electricity#system-tariff" [profile="transform:VAT"] }
 Number TransmissionGridTariff "Current Transmission Grid Tariff" <price> (TotalPrice) { channel="energidataservice:service:energidataservice:electricity#transmission-grid-tariff" [profile="transform:VAT"] }
 Number ElectricityTax "Current Electricity Tax" <price> (TotalPrice) { channel="energidataservice:service:energidataservice:electricity#electricity-tax" [profile="transform:VAT"] }
-String HourlyPrices "Hourly Prices" <price> { channel="energidataservice:service:energidataservice:electricity#hourly-prices" }
 ```
 
+### Persistence Configuration
+
+```java
+Strategies {
+    default = everyChange
+}
+
+Items {
+    SpotPrice,
+    GridTariff,
+    SystemTariff,
+    TransmissionGridTariff,
+    ElectricityTax: strategy = forecast
+}
+```
+
+In case persistence is only needed for charts and/or accessing prices from rules, [InMemory Persistence](https://www.openhab.org/addons/persistence/inmemory/) can be used.
+
 ### Thing Actions Example
 
 :::: tabs
@@ -517,3 +501,29 @@ var result = edsActions.calculateCheapestPeriod(time.Instant.now(), time.Instant
 :::
 
 ::::
+
+### Persistence Rule Example
+
+:::: tabs
+
+::: tab DSL
+
+```javascript
+var hourStart = now.plusHours(2).truncatedTo(ChronoUnit.HOURS)
+var price = SpotPrice.historicState(hourStart).state
+logInfo("Spot price two hours from now", price.toString)
+```
+
+:::
+
+::: tab JavaScript
+
+```javascript
+var hourStart = time.toZDT().plusHours(2).truncatedTo(time.ChronoUnit.HOURS);
+var price = items.SpotPrice.history.historicState(hourStart).quantityState;
+console.log("Spot price two hours from now: " + price);
+```
+
+:::
+
+::::

bundles/org.openhab.binding.energidataservice/src/main/java/org/openhab/binding/energidataservice/internal/EnergiDataServiceBindingConstants.java

@@ -52,12 +52,10 @@ public class EnergiDataServiceBindingConstants {
             + ChannelUID.CHANNEL_GROUP_SEPARATOR + "reduced-electricity-tax";
     public static final String CHANNEL_TRANSMISSION_GRID_TARIFF = CHANNEL_GROUP_ELECTRICITY
             + ChannelUID.CHANNEL_GROUP_SEPARATOR + "transmission-grid-tariff";
-    public static final String CHANNEL_HOURLY_PRICES = CHANNEL_GROUP_ELECTRICITY + ChannelUID.CHANNEL_GROUP_SEPARATOR
-            + "hourly-prices";
 
     public static final Set<String> ELECTRICITY_CHANNELS = Set.of(CHANNEL_SPOT_PRICE, CHANNEL_GRID_TARIFF,
             CHANNEL_SYSTEM_TARIFF, CHANNEL_TRANSMISSION_GRID_TARIFF, CHANNEL_ELECTRICITY_TAX,
-            CHANNEL_REDUCED_ELECTRICITY_TAX, CHANNEL_HOURLY_PRICES);
+            CHANNEL_REDUCED_ELECTRICITY_TAX);
 
     // List of all properties
     public static final String PROPERTY_REMAINING_CALLS = "remainingCalls";

bundles/org.openhab.binding.energidataservice/src/main/java/org/openhab/binding/energidataservice/internal/handler/EnergiDataServiceHandler.java

@@ -60,7 +60,6 @@ import org.openhab.binding.energidataservice.internal.retry.RetryStrategy;
 import org.openhab.core.i18n.TimeZoneProvider;
 import org.openhab.core.library.types.DecimalType;
 import org.openhab.core.library.types.QuantityType;
-import org.openhab.core.library.types.StringType;
 import org.openhab.core.library.unit.CurrencyUnits;
 import org.openhab.core.thing.Channel;
 import org.openhab.core.thing.ChannelUID;
@@ -77,8 +76,6 @@ import org.openhab.core.types.UnDefType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.gson.Gson;
-
 /**
  * The {@link EnergiDataServiceHandler} is responsible for handling commands, which are
  * sent to one of the channels.
@@ -92,19 +89,12 @@ public class EnergiDataServiceHandler extends BaseThingHandler {
     private final TimeZoneProvider timeZoneProvider;
     private final ApiController apiController;
     private final CacheManager cacheManager;
-    private final Gson gson = new Gson();
 
     private EnergiDataServiceConfiguration config;
     private RetryStrategy retryPolicy = RetryPolicyFactory.initial();
     private @Nullable ScheduledFuture<?> refreshFuture;
     private @Nullable ScheduledFuture<?> priceUpdateFuture;
 
-    private record Price(String hourStart, BigDecimal spotPrice, String spotPriceCurrency,
-            @Nullable BigDecimal gridTariff, @Nullable BigDecimal systemTariff,
-            @Nullable BigDecimal transmissionGridTariff, @Nullable BigDecimal electricityTax,
-            @Nullable BigDecimal reducedElectricityTax) {
-    }
-
     public EnergiDataServiceHandler(Thing thing, HttpClient httpClient, TimeZoneProvider timeZoneProvider) {
         super(thing);
         this.timeZoneProvider = timeZoneProvider;
@@ -177,12 +167,12 @@ public class EnergiDataServiceHandler extends BaseThingHandler {
     private void refreshElectricityPrices() {
         RetryStrategy retryPolicy;
         try {
-            if (isLinked(CHANNEL_SPOT_PRICE) || isLinked(CHANNEL_HOURLY_PRICES)) {
+            if (isLinked(CHANNEL_SPOT_PRICE)) {
                 downloadSpotPrices();
             }
 
             for (DatahubTariff datahubTariff : DatahubTariff.values()) {
-                if (isLinked(datahubTariff.getChannelId()) || isLinked(CHANNEL_HOURLY_PRICES)) {
+                if (isLinked(datahubTariff.getChannelId())) {
                     downloadTariffs(datahubTariff);
                 }
             }
@@ -191,7 +181,7 @@ public class EnergiDataServiceHandler extends BaseThingHandler {
             updatePrices();
             updateTimeSeries();
 
-            if (isLinked(CHANNEL_SPOT_PRICE) || isLinked(CHANNEL_HOURLY_PRICES)) {
+            if (isLinked(CHANNEL_SPOT_PRICE)) {
                 if (cacheManager.getNumberOfFutureSpotPrices() < 13) {
                     retryPolicy = RetryPolicyFactory.whenExpectedSpotPriceDataMissing(DAILY_REFRESH_TIME_CET,
                             NORD_POOL_TIMEZONE);
@@ -315,7 +305,6 @@ public class EnergiDataServiceHandler extends BaseThingHandler {
         updateCurrentSpotPrice();
         Arrays.stream(DatahubTariff.values())
                 .forEach(tariff -> updateCurrentTariff(tariff.getChannelId(), cacheManager.getTariff(tariff)));
-        updateHourlyPrices();
 
         reschedulePriceUpdateJob();
     }
@@ -354,30 +343,6 @@ public class EnergiDataServiceHandler extends BaseThingHandler {
         }
     }
 
-    private void updateHourlyPrices() {
-        if (!isLinked(CHANNEL_HOURLY_PRICES)) {
-            return;
-        }
-        Map<Instant, BigDecimal> spotPriceMap = cacheManager.getSpotPrices();
-        Price[] targetPrices = new Price[spotPriceMap.size()];
-        List<Entry<Instant, BigDecimal>> sourcePrices = spotPriceMap.entrySet().stream()
-                .sorted(Map.Entry.comparingByKey()).toList();
-
-        int i = 0;
-        for (Entry<Instant, BigDecimal> sourcePrice : sourcePrices) {
-            Instant hourStart = sourcePrice.getKey();
-            BigDecimal gridTariff = cacheManager.getTariff(DatahubTariff.GRID_TARIFF, hourStart);
-            BigDecimal systemTariff = cacheManager.getTariff(DatahubTariff.SYSTEM_TARIFF, hourStart);
-            BigDecimal transmissionGridTariff = cacheManager.getTariff(DatahubTariff.TRANSMISSION_GRID_TARIFF,
-                    hourStart);
-            BigDecimal electricityTax = cacheManager.getTariff(DatahubTariff.ELECTRICITY_TAX, hourStart);
-            BigDecimal reducedElectricityTax = cacheManager.getTariff(DatahubTariff.REDUCED_ELECTRICITY_TAX, hourStart);
-            targetPrices[i++] = new Price(hourStart.toString(), sourcePrice.getValue(), config.currencyCode, gridTariff,
-                    systemTariff, electricityTax, reducedElectricityTax, transmissionGridTariff);
-        }
-        updateState(CHANNEL_HOURLY_PRICES, new StringType(gson.toJson(targetPrices)));
-    }
-
     private void updateTimeSeries() {
         TimeSeries spotPriceTimeSeries = new TimeSeries(REPLACE);
         Map<DatahubTariff, TimeSeries> datahubTimeSeriesMap = new HashMap<>();

bundles/org.openhab.binding.energidataservice/src/main/resources/OH-INF/i18n/energidataservice.properties

@@ -75,8 +75,6 @@ channel-group-type.energidataservice.electricity.channel.transmission-grid-tarif
 
 channel-type.energidataservice.datahub-price.label = Datahub Price
 channel-type.energidataservice.datahub-price.description = Datahub price.
-channel-type.energidataservice.hourly-prices.label = Hourly Prices
-channel-type.energidataservice.hourly-prices.description = JSON array with hourly prices from 24 hours ago and onward.
 channel-type.energidataservice.spot-price.label = Spot Price
 channel-type.energidataservice.spot-price.description = Spot price.
 

bundles/org.openhab.binding.energidataservice/src/main/resources/OH-INF/thing/channel-groups.xml

@@ -32,7 +32,6 @@
 				<label>Reduced Electricity Tax</label>
 				<description>Reduced electricity tax in DKK per kWh. For electric heating customers only.</description>
 			</channel>
-			<channel id="hourly-prices" typeId="hourly-prices"/>
 		</channels>
 	</channel-group-type>
 

bundles/org.openhab.binding.energidataservice/src/main/resources/OH-INF/thing/channel-types.xml

@@ -21,12 +21,4 @@
 		<config-description-ref uri="channel-type:energidataservice:datahub-price"/>
 	</channel-type>
 
-	<channel-type id="hourly-prices" advanced="true">
-		<item-type>String</item-type>
-		<label>Hourly Prices</label>
-		<description>JSON array with hourly prices from 24 hours ago and onward.</description>
-		<category>Price</category>
-		<state readOnly="true"></state>
-	</channel-type>
-
 </thing:thing-descriptions>

bundles/org.openhab.binding.energidataservice/src/main/resources/OH-INF/thing/thing-service.xml

@@ -14,7 +14,7 @@
 		</channel-groups>
 
 		<properties>
-			<property name="thingTypeVersion">3</property>
+			<property name="thingTypeVersion">4</property>
 		</properties>
 
 		<config-description-ref uri="thing-type:energidataservice:service"/>

bundles/org.openhab.binding.energidataservice/src/main/resources/OH-INF/update/instructions.xml

@@ -61,6 +61,10 @@
 			</update-channel>
 		</instruction-set>
 
+		<instruction-set targetVersion="4">
+			<remove-channel id="hourly-prices" groupIds="electricity"/>
+		</instruction-set>
+
 	</thing-type>
 
 </update:update-descriptions>