Add wrapper for List Tariff Charges api

src/main/java/com/wrapper/octopusenergy/OctopusEnergyApi.java

@@ -4,6 +4,9 @@
 
 import com.wrapper.octopusenergy.request.ProductsRequest;
 import com.wrapper.octopusenergy.request.RetrieveProductRequest;
+import com.wrapper.octopusenergy.request.TariffChargesListRequest;
+import com.wrapper.octopusenergy.response.data.EnergyType;
+import com.wrapper.octopusenergy.response.data.RateType;
 import com.wrapper.octopusenergy.service.OctopusEnergyApiService;
 import okhttp3.OkHttpClient;
 import retrofit2.Retrofit;
@@ -57,4 +60,8 @@ public ProductsRequest.Builder getProductList() {
     public RetrieveProductRequest.Builder getProduct(String productCode) {
         return new RetrieveProductRequest.Builder(this, productCode);
     }
+
+    public TariffChargesListRequest.Builder getTariffCharges(String productCode, String tariffCode, EnergyType energyType, RateType rateType) {
+        return new TariffChargesListRequest.Builder(this, productCode, tariffCode, energyType, rateType);
+    }
 }

src/main/java/com/wrapper/octopusenergy/example/ProductRequestExample.java

@@ -11,7 +11,7 @@ public static void main(String[] args) {
         OctopusEnergyApi api = new OctopusEnergyApi(args[0]);
 
         // Create and execute a request
-        OctopusEnergyProduct product = api.getProduct("M-AND-S-SEG-FIX-12M-20-11-11")
+        OctopusEnergyProduct product = api.getProduct("PREPAY-VAR-18-09-21")
                                                   .tariffsActiveAt(LocalDateTime.now())
                                                   .execute();
         System.out.println("productRequest: " + product);

src/main/java/com/wrapper/octopusenergy/example/TariffChargeRequestExample.java

@@ -0,0 +1,18 @@
+package com.wrapper.octopusenergy.example;
+
+import com.wrapper.octopusenergy.OctopusEnergyApi;
+import com.wrapper.octopusenergy.response.data.EnergyType;
+import com.wrapper.octopusenergy.response.data.RateType;
+import com.wrapper.octopusenergy.response.data.TariffChargeData;
+
+public class TariffChargeRequestExample {
+    public static void main(String[] args) {
+        // For all requests an API key is needed
+        OctopusEnergyApi api = new OctopusEnergyApi(args[0]);
+
+        // Create and execute a request
+        TariffChargeData product = api.getTariffCharges("PREPAY-VAR-18-09-21", "E-1R-PREPAY-VAR-18-09-21-A", EnergyType.ELECTRICITY_TARIFFS, RateType.STANDING_CHARGES)
+                                      .execute();
+        System.out.println("productRequest: " + product);
+    }
+}

src/main/java/com/wrapper/octopusenergy/request/TariffChargesListRequest.java

@@ -0,0 +1,82 @@
+package com.wrapper.octopusenergy.request;
+
+import java.time.LocalDateTime;
+
+import com.wrapper.octopusenergy.OctopusEnergyApi;
+import com.wrapper.octopusenergy.response.data.EnergyType;
+import com.wrapper.octopusenergy.response.data.RateType;
+import com.wrapper.octopusenergy.response.data.TariffChargeData;
+import com.wrapper.octopusenergy.util.ISODateFormatter;
+
+public class TariffChargesListRequest extends Request<TariffChargeData> {
+    private final String periodTo;
+    private final String pageSize;
+    private final String periodFrom;
+    private final RateType rateType;
+    private final String tariffCode;
+    private final String productCode;
+    private final EnergyType energyType;
+
+    TariffChargesListRequest(Builder builder) {
+        super(builder.octopusEnergyApi);
+
+        this.productCode = builder.productCode;
+        this.tariffCode = builder.tariffCode;
+        this.periodTo = builder.periodTo;
+        this.pageSize = builder.pageSize;
+        this.periodFrom = builder.periodFrom;
+        this.rateType = builder.rateType;
+        this.energyType = builder.energyType;
+    }
+
+    protected TariffChargeData execute() {
+        return super.execute(octopusEnergyApi.octopusEnergyApiService()
+                                             .getTariffCharges(
+                                                     productCode,
+                                                     tariffCode,
+                                                     energyType.getValue(),
+                                                     rateType.getValue(),
+                                                     periodFrom,
+                                                     periodTo,
+                                                     pageSize), TariffChargeData.class);
+    }
+
+    public static class Builder extends AbstractBuilder<TariffChargeData> {
+
+        private String periodTo;
+        private String pageSize;
+        private String periodFrom;
+        private final String tariffCode;
+        private final RateType rateType;
+        private final String productCode;
+        private final EnergyType energyType;
+
+        public Builder(OctopusEnergyApi octopusEnergyApi, String productCode, String tariffCode, EnergyType energyType, RateType rateType) {
+            super(octopusEnergyApi);
+            this.productCode = productCode;
+            this.tariffCode = tariffCode;
+            this.energyType = energyType;
+            this.rateType = rateType;
+        }
+
+        public Builder periodFrom(LocalDateTime periodFrom) {
+            this.periodFrom = ISODateFormatter.getFormattedDateTimeString(periodFrom);
+            return this;
+        }
+
+        public Builder periodTo(LocalDateTime periodTo) {
+            this.periodTo = ISODateFormatter.getFormattedDateTimeString(periodTo);
+            return this;
+        }
+
+        public Builder pageSize(String pageSize) {
+            this.pageSize = pageSize;
+            return this;
+        }
+
+        @Override
+        public TariffChargeData execute() {
+            return new TariffChargesListRequest(this).execute();
+        }
+    }
+}

src/main/java/com/wrapper/octopusenergy/response/data/EnergyType.java

@@ -0,0 +1,17 @@
+package com.wrapper.octopusenergy.response.data;
+
+public enum EnergyType {
+
+    GAS_TARIFFS("gas-tariffs"),
+    ELECTRICITY_TARIFFS("electricity-tariffs");
+
+    private final String value;
+
+    EnergyType(String value) {
+        this.value = value;
+    }
+
+    public String getValue() {
+        return value;
+    }
+}

src/main/java/com/wrapper/octopusenergy/response/data/OctopusEnergyProduct.java

@@ -8,7 +8,6 @@
 import com.google.gson.annotations.SerializedName;
 import com.sun.istack.internal.Nullable;
 import com.wrapper.octopusenergy.response.Response;
-import netscape.javascript.JSObject;
 
 public class OctopusEnergyProduct extends Response<OctopusEnergyProduct> {
     @SerializedName("code")

src/main/java/com/wrapper/octopusenergy/response/data/RateType.java

@@ -0,0 +1,18 @@
+package com.wrapper.octopusenergy.response.data;
+
+public enum RateType {
+    STANDING_CHARGES("standing-charges"),
+    STANDARD_UNIT_RATES("standard-unit-rates"),
+    DAY_UNIT_RATES("day-unit-rates"),
+    NIGHT_UNIT_RATES("night-unit-rates");
+
+    private final String value;
+
+    RateType(String value) {
+        this.value = value;
+    }
+
+    public String getValue() {
+        return value;
+    }
+}

src/main/java/com/wrapper/octopusenergy/response/data/TariffCharge.java

@@ -0,0 +1,53 @@
+package com.wrapper.octopusenergy.response.data;
+
+import com.google.gson.annotations.Expose;
+import com.google.gson.annotations.SerializedName;
+
+public class TariffCharge {
+
+    @SerializedName("value_exc_vat")
+    @Expose
+    private Double valueExcVat;
+    @SerializedName("value_inc_vat")
+    @Expose
+    private Double valueIncVat;
+    @SerializedName("valid_from")
+    @Expose
+    private String validFrom;
+    @SerializedName("valid_to")
+    @Expose
+    private String validTo;
+
+    public Double getValueExcVat() {
+        return valueExcVat;
+    }
+
+    public void setValueExcVat(Double valueExcVat) {
+        this.valueExcVat = valueExcVat;
+    }
+
+    public Double getValueIncVat() {
+        return valueIncVat;
+    }
+
+    public void setValueIncVat(Double valueIncVat) {
+        this.valueIncVat = valueIncVat;
+    }
+
+    public String getValidFrom() {
+        return validFrom;
+    }
+
+    public void setValidFrom(String validFrom) {
+        this.validFrom = validFrom;
+    }
+
+    public String getValidTo() {
+        return validTo;
+    }
+
+    public void setValidTo(String validTo) {
+        this.validTo = validTo;
+    }
+
+}

src/main/java/com/wrapper/octopusenergy/response/data/TariffChargeData.java

@@ -0,0 +1,60 @@
+package com.wrapper.octopusenergy.response.data;
+
+import java.util.List;
+
+import com.google.gson.GsonBuilder;
+import com.google.gson.annotations.Expose;
+import com.google.gson.annotations.SerializedName;
+import com.wrapper.octopusenergy.response.Response;
+
+public class TariffChargeData extends Response<TariffChargeData> {
+
+    @SerializedName("count")
+    @Expose
+    private Integer count;
+    @SerializedName("next")
+    @Expose
+    private Object next;
+    @SerializedName("previous")
+    @Expose
+    private Object previous;
+    @SerializedName("results")
+    @Expose
+    private List<TariffCharge> tariffCharges = null;
+
+    public Integer getCount() {
+        return count;
+    }
+
+    public void setCount(Integer count) {
+        this.count = count;
+    }
+
+    public Object getNext() {
+        return next;
+    }
+
+    public void setNext(Object next) {
+        this.next = next;
+    }
+
+    public Object getPrevious() {
+        return previous;
+    }
+
+    public void setPrevious(Object previous) {
+        this.previous = previous;
+    }
+
+    public List<TariffCharge> getResults() {
+        return tariffCharges;
+    }
+
+    public void setResults(List<TariffCharge> results) {
+        this.tariffCharges = results;
+    }
+
+    public String toString() {
+        return new GsonBuilder().setPrettyPrinting().create().toJson(this);
+    }
+}

src/main/java/com/wrapper/octopusenergy/service/OctopusEnergyApiService.java

@@ -2,6 +2,7 @@
 
 import com.wrapper.octopusenergy.response.data.OctopusEnergyProduct;
 import com.wrapper.octopusenergy.response.data.ProductListData;
+import com.wrapper.octopusenergy.response.data.TariffChargeData;
 import retrofit2.Call;
 import retrofit2.http.GET;
 import retrofit2.http.Path;
@@ -21,4 +22,13 @@ Call<ProductListData> getProducts(
     @GET("/v1/products/{product_code}/")
     Call<OctopusEnergyProduct> getProduct(@Path("product_code") String productCode,
                                           @Query("tariffs_active_at") String tariffsActiveAt);
+
+    @GET("/v1/products/{product_code}/{energy_type}/{tariff_code}/{rate_type}/")
+    Call<TariffChargeData> getTariffCharges(@Path("product_code") String productCode,
+                                            @Path("tariff_code") String tariffCode,
+                                            @Path("energy_type") String energyType,
+                                            @Path("rate_type") String rateType,
+                                            @Query("period_from") String periodFrom,
+                                            @Query("period_to") String periodTo,
+                                            @Query("page_size") String pageSize);
 }