Add duration to boost badges

Lets clients know how long the badge will last for after purchase.

service/src/main/java/org/whispersystems/textsecuregcm/entities/PurchasableBadge.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2022 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.whispersystems.textsecuregcm.entities;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import java.time.Duration;
+import java.util.List;
+import java.util.Objects;
+
+public class PurchasableBadge extends Badge {
+  private final Duration duration;
+
+  @JsonCreator
+  public PurchasableBadge(
+      @JsonProperty("id") final String id,
+      @JsonProperty("category") final String category,
+      @JsonProperty("name") final String name,
+      @JsonProperty("description") final String description,
+      @JsonProperty("sprites6") final List<String> sprites6,
+      @JsonProperty("svg") final String svg,
+      @JsonProperty("svgs") final List<BadgeSvg> svgs,
+      @JsonProperty("duration") final Duration duration) {
+    super(id, category, name, description, sprites6, svg, svgs);
+    this.duration = duration;
+  }
+
+  public PurchasableBadge(final Badge badge, final Duration duration) {
+    super(
+        badge.getId(),
+        badge.getCategory(),
+        badge.getName(),
+        badge.getDescription(),
+        badge.getSprites6(),
+        badge.getSvg(),
+        badge.getSvgs());
+    this.duration = duration;
+  }
+
+  public Duration getDuration() {
+    return duration;
+  }
+
+  @Override
+  public boolean equals(final Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    if (!super.equals(o)) {
+      return false;
+    }
+    PurchasableBadge that = (PurchasableBadge) o;
+    return Objects.equals(duration, that.duration);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(super.hashCode(), duration);
+  }
+
+  @Override
+  public String toString() {
+    return "PurchasableBadge{" +
+        "super=" + super.toString() +
+        ", duration=" + duration +
+        '}';
+  }
+}

service/src/main/java/org/whispersystems/textsecuregcm/entities/SelfBadge.java

@@ -63,7 +63,8 @@ public class SelfBadge extends Badge {
   @Override
   public String toString() {
     return "SelfBadge{" +
-        "expiration=" + expiration +
+        "super=" + super.toString() +
+        ", expiration=" + expiration +
         ", visible=" + visible +
         '}';
   }