feat(rc): Add Remote Config Parameter Value Type support

src/main/java/com/google/firebase/remoteconfig/Parameter.java

@@ -18,6 +18,7 @@
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
+import com.google.common.base.Strings;
 import com.google.firebase.internal.NonNull;
 import com.google.firebase.internal.Nullable;
 import com.google.firebase.remoteconfig.internal.TemplateResponse.ParameterResponse;
@@ -37,6 +38,7 @@ public final class Parameter {
   private ParameterValue defaultValue;
   private String description;
   private Map<String, ParameterValue> conditionalValues;
+  private ParameterValueType valueType;
 
   /**
    * Creates a new {@link Parameter}.
@@ -59,6 +61,9 @@ public Parameter() {
     this.defaultValue = (responseDefaultValue == null) ? null
             : ParameterValue.fromParameterValueResponse(responseDefaultValue);
     this.description = parameterResponse.getDescription();
+    if (!Strings.isNullOrEmpty(parameterResponse.getValueType())) {
+      this.valueType = ParameterValueType.valueOf(parameterResponse.getValueType());
+    }
   }
 
   /**
@@ -93,6 +98,16 @@ public Map<String, ParameterValue> getConditionalValues() {
     return conditionalValues;
   }
 
+  /**
+   * Gets the data type of the parameter value.
+   *
+   * @return The data type of the parameter value or null.
+   */
+  @Nullable
+  public ParameterValueType getValueType() {
+    return valueType;
+  }
+
   /**
    * Sets the default value of the parameter.
    * This is the value to set the parameter to, when none of the named conditions
@@ -133,6 +148,18 @@ public Parameter setConditionalValues(
     return this;
   }
 
+  /**
+   * Sets the data type of the parameter value.
+   * Defaults to `ParameterValueType.STRING` if unspecified.
+   *
+   * @param valueType The data type of the parameter value.
+   * @return This {@link Parameter}.
+   */
+  public Parameter setValueType(@Nullable ParameterValueType valueType) {
+    this.valueType = valueType;
+    return this;
+  }
+
   ParameterResponse toParameterResponse() {
     Map<String, ParameterValueResponse> conditionalResponseValues = new HashMap<>();
     for (Map.Entry<String, ParameterValue> entry : conditionalValues.entrySet()) {
@@ -143,7 +170,8 @@ ParameterResponse toParameterResponse() {
     return new ParameterResponse()
             .setDefaultValue(defaultValueResponse)
             .setDescription(description)
-            .setConditionalValues(conditionalResponseValues);
+            .setConditionalValues(conditionalResponseValues)
+            .setValueType(this.valueType == null ? null : this.valueType.getValueType());
   }
 
   @Override
@@ -157,11 +185,12 @@ public boolean equals(Object o) {
     Parameter parameter = (Parameter) o;
     return Objects.equals(defaultValue, parameter.defaultValue)
             && Objects.equals(description, parameter.description)
-            && Objects.equals(conditionalValues, parameter.conditionalValues);
+            && Objects.equals(conditionalValues, parameter.conditionalValues)
+            && Objects.equals(valueType, parameter.valueType);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(defaultValue, description, conditionalValues);
+    return Objects.hash(defaultValue, description, conditionalValues, valueType);
   }
 }

src/main/java/com/google/firebase/remoteconfig/ParameterValueType.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.firebase.remoteconfig;
+
+/**
+ * Data types that are associated with parameter values.
+ */
+public enum ParameterValueType {
+  STRING("STRING"),
+  BOOLEAN("BOOLEAN"),
+  NUMBER("NUMBER"),
+  JSON("JSON");
+
+  private final String valueType;
+
+  ParameterValueType(String valueType) {
+    this.valueType = valueType;
+  }
+
+  public String getValueType() {
+    return valueType;
+  }
+}

src/main/java/com/google/firebase/remoteconfig/internal/TemplateResponse.java

@@ -107,6 +107,9 @@ public static final class ParameterResponse {
     @Key("conditionalValues")
     private Map<String, ParameterValueResponse> conditionalValues;
 
+    @Key("valueType")
+    private String valueType;
+
     public ParameterValueResponse getDefaultValue() {
       return defaultValue;
     }
@@ -119,6 +122,10 @@ public Map<String, ParameterValueResponse> getConditionalValues() {
       return conditionalValues;
     }
 
+    public String getValueType() {
+      return valueType;
+    }
+
     public ParameterResponse setDefaultValue(
             ParameterValueResponse defaultValue) {
       this.defaultValue = defaultValue;
@@ -135,6 +142,11 @@ public ParameterResponse setConditionalValues(
       this.conditionalValues = conditionalValues;
       return this;
     }
+
+    public ParameterResponse setValueType(String valueType) {
+      this.valueType = valueType;
+      return this;
+    }
   }
 
   /**

src/test/java/com/google/firebase/remoteconfig/FirebaseRemoteConfigClientImplTest.java

@@ -85,9 +85,11 @@ public class FirebaseRemoteConfigClientImplTest {
                   .setConditionalValues(ImmutableMap.<String, ParameterValue>of(
                           "ios_en", ParameterValue.of("welcome to app en")
                   ))
-                  .setDescription("text for welcome message!"),
+                  .setDescription("text for welcome message!")
+                  .setValueType(ParameterValueType.STRING),
           "header_text", new Parameter()
                   .setDefaultValue(ParameterValue.inAppDefault())
+                  .setValueType(ParameterValueType.STRING)
   );
 
   private static final Map<String, ParameterGroup> EXPECTED_PARAMETER_GROUPS = ImmutableMap.of(
@@ -97,6 +99,7 @@ public class FirebaseRemoteConfigClientImplTest {
                           "pumpkin_spice_season", new Parameter()
                                   .setDefaultValue(ParameterValue.of("true"))
                                   .setDescription("Whether it's currently pumpkin spice season.")
+                                  .setValueType(ParameterValueType.BOOLEAN)
                           )
                   )
   );

src/test/java/com/google/firebase/remoteconfig/FirebaseRemoteConfigIT.java

@@ -249,9 +249,11 @@ private Map<String, Parameter> getParameters() {
                             "ios_en",
                             ParameterValue.of(String.format("welcome to app en %s", timestamp))
                     ))
-                    .setDescription("text for welcome message!"),
+                    .setDescription("text for welcome message!")
+                    .setValueType(ParameterValueType.STRING),
             "header_text", new Parameter()
-                    .setDefaultValue(ParameterValue.inAppDefault()));
+                    .setDefaultValue(ParameterValue.inAppDefault())
+                    .setValueType(ParameterValueType.STRING));
   }
 
   private Map<String, ParameterGroup> getParameterGroups() {
@@ -262,7 +264,8 @@ private Map<String, ParameterGroup> getParameterGroups() {
                     .setParameters(ImmutableMap.of(
                             "pumpkin_spice_season", new Parameter()
                                     .setDefaultValue(ParameterValue.of("true"))
-                                    .setDescription("Whether it's currently pumpkin spice season."))
+                                    .setDescription("Whether it's currently pumpkin spice season.")
+                                    .setValueType(ParameterValueType.STRING))
                     ));
   }
 

src/test/java/com/google/firebase/remoteconfig/ParameterTest.java

@@ -38,6 +38,7 @@ public void testConstructor() {
     assertTrue(parameter.getConditionalValues().isEmpty());
     assertNull(parameter.getDefaultValue());
     assertNull(parameter.getDescription());
+    assertNull(parameter.getValueType());
   }
 
   @Test(expected = NullPointerException.class)
@@ -84,8 +85,23 @@ public void testEquality() {
             .setConditionalValues(conditionalValues);
 
     assertEquals(parameterFive, parameterSix);
+
+    final Parameter parameterSeven = new Parameter()
+            .setDefaultValue(ParameterValue.inAppDefault())
+            .setDescription("greeting text")
+            .setConditionalValues(conditionalValues)
+            .setValueType(ParameterValueType.STRING);
+    final Parameter parameterEight = new Parameter()
+            .setDefaultValue(ParameterValue.inAppDefault())
+            .setDescription("greeting text")
+            .setConditionalValues(conditionalValues)
+            .setValueType(ParameterValueType.STRING);
+
+    assertEquals(parameterSeven, parameterEight);
     assertNotEquals(parameterOne, parameterThree);
     assertNotEquals(parameterOne, parameterFive);
+    assertNotEquals(parameterOne, parameterSeven);
     assertNotEquals(parameterThree, parameterFive);
+    assertNotEquals(parameterThree, parameterSeven);
   }
 }

src/test/java/com/google/firebase/remoteconfig/TemplateTest.java

@@ -49,7 +49,8 @@ public class TemplateTest {
           "greeting_header", new Parameter()
                   .setDefaultValue(ParameterValue.inAppDefault())
                   .setDescription("greeting header text")
-                  .setConditionalValues(CONDITIONAL_VALUES),
+                  .setConditionalValues(CONDITIONAL_VALUES)
+                  .setValueType(ParameterValueType.STRING),
           "greeting_text", new Parameter()
                   .setDefaultValue(ParameterValue.inAppDefault())
                   .setDescription("greeting text")
@@ -274,15 +275,17 @@ public void testToJSONWithEmptyTemplate() {
   public void testToJSONWithParameterValues() {
     Template t = new Template();
     t.getParameters()
-            .put("with_value", new Parameter().setDefaultValue(ParameterValue.of("hello")));
+            .put("with_value", new Parameter().setDefaultValue(ParameterValue.of("hello"))
+                    .setValueType(ParameterValueType.NUMBER));
     t.getParameters()
             .put("with_inApp", new Parameter().setDefaultValue(ParameterValue.inAppDefault()));
     String jsonString = t.toJSON();
 
     assertEquals("{\"conditions\":[],\"parameterGroups\":{},"
             + "\"parameters\":{\"with_value\":{\"conditionalValues\":{},"
-            + "\"defaultValue\":{\"value\":\"hello\"}},\"with_inApp\":{\"conditionalValues\":{},"
-            + "\"defaultValue\":{\"useInAppDefault\":true}}}}", jsonString);
+            + "\"defaultValue\":{\"value\":\"hello\"},\"valueType\":\"NUMBER\"},\"with_inApp\":{"
+            + "\"conditionalValues\":{},\"defaultValue\":{\"useInAppDefault\":true}"
+            + "}}}", jsonString);
   }
 
   @Test

src/test/resources/getRemoteConfig.json

@@ -20,12 +20,14 @@
           "value": "welcome to app en"
         }
       },
-      "description": "text for welcome message!"
+      "description": "text for welcome message!",
+      "valueType": "STRING"
     },
     "header_text": {
       "defaultValue": {
         "useInAppDefault": true
-      }
+      },
+      "valueType": "STRING"
     }
   },
   "parameterGroups": {
@@ -36,7 +38,8 @@
           "defaultValue": {
             "value": "true"
           },
-          "description": "Whether it's currently pumpkin spice season."
+          "description": "Whether it's currently pumpkin spice season.",
+          "valueType": "BOOLEAN"
         }
       }
     }