Update AppDistributionRelease and FirebaseAppDistributionException (#2782)

* Convert AppDistributionRelease to Autovalue and add constructors to Exception type

* Change Autovalue to use Builder pattern

Author: rachaprince

firebase-app-distribution/firebase-app-distribution.gradle

@@ -55,6 +55,9 @@ dependencies {
 
     implementation 'com.google.android.gms:play-services-tasks:17.0.0'
 
+    compileOnly 'com.google.auto.value:auto-value-annotations:1.6.5'
+    annotationProcessor 'com.google.auto.value:auto-value:1.6.5'
+
     implementation 'com.android.support:customtabs:28.0.0'
     implementation "androidx.browser:browser:1.3.0"
 }

firebase-app-distribution/src/main/java/com/google/firebase/appdistribution/AppDistributionRelease.java

@@ -15,46 +15,59 @@
 package com.google.firebase.appdistribution;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import com.google.auto.value.AutoValue;
 
 /**
- * Data class for AppDistributionRelease object returned by checkForUpdate() and
+ * This class represents the AppDistributionRelease object returned by checkForUpdate() and
  * updateToLatestRelease()
+ *
+ * <p>It is an immutable value class implemented by AutoValue.
+ *
+ * @see <a
+ *     href="https://github.com/google/auto/tree/master/value">https://github.com/google/auto/tree/master/value</a>
  */
-public final class AppDistributionRelease {
-  private final String displayVersion;
-  private final String buildVersion;
-  private final String releaseNotes;
-  private final BinaryType binaryType;
-
-  AppDistributionRelease(
-      String displayVersion, String buildVersion, String releaseNotes, BinaryType binaryType) {
-    this.displayVersion = displayVersion;
-    this.buildVersion = buildVersion;
-    this.releaseNotes = releaseNotes;
-    this.binaryType = binaryType;
+@AutoValue
+public abstract class AppDistributionRelease {
+
+  @NonNull
+  public static Builder builder() {
+    return new AutoValue_AppDistributionRelease.Builder();
   }
 
   /** The short bundle version of this build (example 1.0.0) */
   @NonNull
-  public String getDisplayVersion() {
-    return displayVersion;
-  }
+  public abstract String getDisplayVersion();
 
   /** The bundle version of this build (example: 123) */
   @NonNull
-  public String getBuildVersion() {
-    return buildVersion;
-  }
+  public abstract String getBuildVersion();
 
   /** The release notes for this build */
-  @NonNull
-  public String getReleaseNotes() {
-    return releaseNotes;
-  }
+  @Nullable
+  public abstract String getReleaseNotes();
 
   /** The binary type for this build */
   @NonNull
-  public BinaryType getBinaryType() {
-    return binaryType;
+  public abstract BinaryType getBinaryType();
+
+  /** Builder for {@link AppDistributionRelease}. */
+  @AutoValue.Builder
+  public abstract static class Builder {
+
+    @NonNull
+    public abstract Builder setDisplayVersion(@NonNull String value);
+
+    @NonNull
+    public abstract Builder setBuildVersion(@NonNull String value);
+
+    @NonNull
+    public abstract Builder setReleaseNotes(@Nullable String value);
+
+    @NonNull
+    public abstract Builder setBinaryType(@NonNull BinaryType value);
+
+    @NonNull
+    public abstract AppDistributionRelease build();
   }
 }

firebase-app-distribution/src/main/java/com/google/firebase/appdistribution/FirebaseAppDistributionException.java

@@ -69,6 +69,23 @@ public enum Status {
     this.release = null;
   }
 
+  public FirebaseAppDistributionException(
+      @NonNull String message, @NonNull Status status, @Nullable AppDistributionRelease release) {
+    super(message);
+    this.status = status;
+    this.release = release;
+  }
+
+  public FirebaseAppDistributionException(
+      @NonNull String message,
+      @NonNull Status status,
+      @Nullable AppDistributionRelease release,
+      @NonNull Throwable cause) {
+    super(message, cause);
+    this.status = status;
+    this.release = release;
+  }
+
   /** Get cached release when error was thrown */
   @NonNull
   public AppDistributionRelease getRelease() {