Move SendEmailUtils to the /ui/server directory

SendEmailUtils is a general utility of the web console, and not specifically "only"
to the Registrar console.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=226187094

java/google/registry/config/RegistryConfig.java

@@ -509,7 +509,7 @@ public final class RegistryConfig {
     /**
      * The email address that outgoing emails from the app are sent from.
      *
-     * @see google.registry.ui.server.registrar.SendEmailUtils
+     * @see google.registry.ui.server.SendEmailUtils
      */
     @Provides
     @Config("gSuiteOutgoingEmailAddress")
@@ -520,10 +520,10 @@ public final class RegistryConfig {
     /**
      * The display name that is used on outgoing emails sent by Nomulus.
      *
-     * @see google.registry.ui.server.registrar.SendEmailUtils
+     * @see google.registry.ui.server.SendEmailUtils
      */
     @Provides
-    @Config("gSuiteOutoingEmailDisplayName")
+    @Config("gSuiteOutgoingEmailDisplayName")
     public static String provideGSuiteOutgoingEmailDisplayName(RegistryConfigSettings config) {
       return config.gSuite.outgoingEmailDisplayName;
     }

java/google/registry/ui/server/BUILD

@@ -13,12 +13,16 @@ java_library(
         "//java/google/registry/ui/css:registrar_dbg.css.js",
     ],
     deps = [
+        "//java/google/registry/config",
         "//java/google/registry/model",
         "//java/google/registry/ui",
         "//java/google/registry/ui/forms",
         "//java/google/registry/util",
         "@com_google_appengine_api_1_0_sdk",
         "@com_google_code_findbugs_jsr305",
+        "@com_google_dagger",
+        "@com_google_flogger",
+        "@com_google_flogger_system_backend",
         "@com_google_guava",
         "@com_google_re2j",
         "@io_bazel_rules_closure//closure/templates",

java/google/registry/ui/server/SendEmailUtils.java

@@ -12,13 +12,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package google.registry.ui.server.registrar;
+package google.registry.ui.server;
 
 import static com.google.common.collect.ImmutableList.toImmutableList;
 import static com.google.common.collect.Iterables.toArray;
 
 import com.google.common.base.Joiner;
-import com.google.common.collect.Streams;
+import com.google.common.collect.ImmutableList;
 import com.google.common.flogger.FluentLogger;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.util.SendEmailService;
@@ -37,30 +37,40 @@ public class SendEmailUtils {
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
 
   private final String gSuiteOutgoingEmailAddress;
-  private final String gSuiteOutoingEmailDisplayName;
+  private final String gSuiteOutgoingEmailDisplayName;
   private final SendEmailService emailService;
+  private final ImmutableList<String> registrarChangesNotificationEmailAddresses;
 
   @Inject
   public SendEmailUtils(
       @Config("gSuiteOutgoingEmailAddress") String gSuiteOutgoingEmailAddress,
-      @Config("gSuiteOutoingEmailDisplayName") String gSuiteOutoingEmailDisplayName,
+      @Config("gSuiteOutgoingEmailDisplayName") String gSuiteOutgoingEmailDisplayName,
+      @Config("registrarChangesNotificationEmailAddresses")
+          ImmutableList<String> registrarChangesNotificationEmailAddresses,
       SendEmailService emailService) {
     this.gSuiteOutgoingEmailAddress = gSuiteOutgoingEmailAddress;
-    this.gSuiteOutoingEmailDisplayName = gSuiteOutoingEmailDisplayName;
+    this.gSuiteOutgoingEmailDisplayName = gSuiteOutgoingEmailDisplayName;
     this.emailService = emailService;
+    this.registrarChangesNotificationEmailAddresses = registrarChangesNotificationEmailAddresses;
   }
 
   /**
-   * Sends an email from Nomulus to the specified recipient(s). Returns true iff sending was
-   * successful.
+   * Sends an email from Nomulus to the registrarChangesNotificationEmailAddresses. Returns true iff
+   * sending to at least 1 address was successful.
+   *
+   * <p>This means that if there are no recepients ({@link #hasRecepients} returns false), this will
+   * return false even thought no error happened.
+   *
+   * <p>This also means that if there are multiple recepients, it will return true even if some (but
+   * not all) of the recepients had an error.
    */
-  public boolean sendEmail(Iterable<String> addresses, final String subject, String body) {
+  public boolean sendEmail(final String subject, String body) {
     try {
       Message msg = emailService.createMessage();
       msg.setFrom(
-          new InternetAddress(gSuiteOutgoingEmailAddress, gSuiteOutoingEmailDisplayName));
+          new InternetAddress(gSuiteOutgoingEmailAddress, gSuiteOutgoingEmailDisplayName));
       List<InternetAddress> emails =
-          Streams.stream(addresses)
+          registrarChangesNotificationEmailAddresses.stream()
               .map(
                   emailAddress -> {
                     try {
@@ -85,9 +95,17 @@ public class SendEmailUtils {
     } catch (Throwable t) {
       logger.atSevere().withCause(t).log(
           "Could not email to addresses %s with subject '%s'.",
-          Joiner.on(", ").join(addresses), subject);
+          Joiner.on(", ").join(registrarChangesNotificationEmailAddresses), subject);
       return false;
     }
     return true;
   }
+
+  /**
+   * Returns whether there are any recepients set up. {@link #sendEmail} will always return false if
+   * there are no recepients.
+   */
+  public boolean hasRecepients() {
+    return !registrarChangesNotificationEmailAddresses.isEmpty();
+  }
 }

java/google/registry/ui/server/registrar/RegistrarSettingsAction.java

@@ -33,7 +33,6 @@ import com.google.common.collect.Multimap;
 import com.google.common.collect.Sets;
 import com.google.common.collect.Streams;
 import com.google.common.flogger.FluentLogger;
-import google.registry.config.RegistryConfig.Config;
 import google.registry.config.RegistryEnvironment;
 import google.registry.model.registrar.Registrar;
 import google.registry.model.registrar.RegistrarContact;
@@ -51,6 +50,7 @@ import google.registry.security.JsonResponseHelper;
 import google.registry.ui.forms.FormException;
 import google.registry.ui.forms.FormFieldException;
 import google.registry.ui.server.RegistrarFormFields;
+import google.registry.ui.server.SendEmailUtils;
 import google.registry.util.AppEngineServiceUtils;
 import google.registry.util.CollectionUtils;
 import google.registry.util.DiffUtils;
@@ -92,8 +92,6 @@ public class RegistrarSettingsAction implements Runnable, JsonActionRunner.JsonA
   @Inject AuthResult authResult;
   @Inject RegistryEnvironment registryEnvironment;
 
-  @Inject @Config("registrarChangesNotificationEmailAddresses") ImmutableList<String>
-      registrarChangesNotificationEmailAddresses;
   @Inject RegistrarSettingsAction() {}
 
   private static final Predicate<RegistrarContact> HAS_PHONE =
@@ -478,7 +476,7 @@ public class RegistrarSettingsAction implements Runnable, JsonActionRunner.JsonA
       ImmutableSet<RegistrarContact> existingContacts,
       Registrar updatedRegistrar,
       ImmutableSet<RegistrarContact> updatedContacts) {
-    if (registrarChangesNotificationEmailAddresses.isEmpty()) {
+    if (!sendEmailUtils.hasRecepients()) {
       return;
     }
 
@@ -495,7 +493,6 @@ public class RegistrarSettingsAction implements Runnable, JsonActionRunner.JsonA
     enqueueRegistrarSheetSync(appEngineServiceUtils.getCurrentVersionHostname("backend"));
     String environment = Ascii.toLowerCase(String.valueOf(registryEnvironment));
     sendEmailUtils.sendEmail(
-        registrarChangesNotificationEmailAddresses,
         String.format(
             "Registrar %s (%s) updated in %s",
             existingRegistrar.getRegistrarName(),