Send more detailed account deletion email

Use SES to send an account deletion confimration email to the user when they delete their account.

Lambdas/Lists/User/src/UserDeleter.java

@@ -1,21 +1,40 @@
 import com.amazonaws.services.cognitoidp.AWSCognitoIdentityProvider;
 import com.amazonaws.services.cognitoidp.AWSCognitoIdentityProviderClientBuilder;
-import com.amazonaws.services.cognitoidp.model.AdminDeleteUserRequest;
-import com.amazonaws.services.cognitoidp.model.AdminUserGlobalSignOutRequest;
+import com.amazonaws.services.cognitoidp.model.*;
+import com.amazonaws.regions.Regions;
+import com.amazonaws.services.simpleemail.AmazonSimpleEmailService;
+import com.amazonaws.services.simpleemail.AmazonSimpleEmailServiceClientBuilder;
+import com.amazonaws.services.simpleemail.model.Body;
+import com.amazonaws.services.simpleemail.model.Content;
+import com.amazonaws.services.simpleemail.model.Destination;
+import com.amazonaws.services.simpleemail.model.Message;
+import com.amazonaws.services.simpleemail.model.SendEmailRequest;
+
 import java.io.IOException;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Properties;
+import java.util.*;
 
 public class UserDeleter implements CallHandler {
 
     private Connection connection;
     private String cognitoID;
 
+    static final String DELETION_EMAIL_FROM = "merzn@purdue.edu";
+    static final String CONFIGSET = "ConfigSet";
+    static final String DELETION_EMAIL_SUBJECT = "Listify Account Deletion Confirmation";
+    static final String HTMLBODY = "<h1>We're sad to see you go!</h1>"
+            + "<p> This email is to confirm your Listify account has been deleted. If you have any questions"
+            + " or did not request this action, please reply to this email. Thank you for being a Listify"
+            + " user and best of luck in your other endeavours!"
+            + "<p>"
+            + "<p> - The Listify Team";
+    static final String TEXTBODY = "This email is to confirm your Listify account has been deleted. If you have any questions"
+                        + " or did not request this action, please reply to this email. Thank you for being a Listify"
+                        + " user and best of luck in your other endeavours! - The Listify Team";
+
     private final String GET_LISTS = "SELECT * FROM List WHERE (owner = ?);";
     private final String DELETE_LIST_PRODUCT = "DELETE FROM ListProduct WHERE (listID = ?);";
     private final String DELETE_LISTS = "DELETE FROM List WHERE (owner = ?);";
@@ -38,6 +57,30 @@ public class UserDeleter implements CallHandler {
         }
         String userPoolId = cognitoProperties.get("userPoolId").toString();
         System.out.println(userPoolId);
+
+        ListUsersRequest checkRequest = new ListUsersRequest().withUserPoolId(userPoolId);
+        checkRequest.setFilter("sub=\"" + cognitoID +"\"");
+
+        ListUsersResult foundUsersResult = awsCognitoIdentityProvider.listUsers(checkRequest);
+        List<UserType> foundUsers = foundUsersResult.getUsers();
+        if (foundUsers.size() != 1) {
+            System.out.println(foundUsers);
+            if (foundUsers.size() == 0) {
+                throw new InputMismatchException("No user with given sub");
+            }
+            throw new InputMismatchException("Found more than one user with supposedly unique sub");
+        }
+        UserType foundUser = foundUsers.get(0);
+        System.out.println(foundUser.getAttributes());
+        String email = "";
+        for (AttributeType attribute : foundUser.getAttributes()) {
+            if (attribute.getName().equals("email")) {
+                email = attribute.getValue();
+                break;
+            }
+            System.out.println(attribute.getName() + ": " + attribute.getValue());
+        }
+
         AdminUserGlobalSignOutRequest adminUserGlobalSignOutRequest = new AdminUserGlobalSignOutRequest().withUserPoolId(userPoolId);
         adminUserGlobalSignOutRequest.setUsername(cognitoID);
         System.out.println(adminUserGlobalSignOutRequest);
@@ -49,6 +92,24 @@ public class UserDeleter implements CallHandler {
 
 
 
+
+        AmazonSimpleEmailService client =
+                AmazonSimpleEmailServiceClientBuilder.standard()
+                        .withRegion(Regions.US_EAST_2).build();
+        SendEmailRequest request = new SendEmailRequest()
+                .withDestination(
+                        new Destination().withToAddresses(email))
+                .withMessage(new Message()
+                        .withBody(new Body()
+                                .withHtml(new Content()
+                                        .withCharset("UTF-8").withData(HTMLBODY))
+                                .withText(new Content()
+                                        .withCharset("UTF-8").withData(TEXTBODY)))
+                        .withSubject(new Content()
+                                .withCharset("UTF-8").withData(DELETION_EMAIL_SUBJECT)))
+                .withSource(DELETION_EMAIL_FROM);
+        client.sendEmail(request);
+
         PreparedStatement statement = connection.prepareStatement(GET_LISTS);
         statement.setString(1, cognitoID);
         System.out.println(statement);

Lambdas/Lists/pom.xml

@@ -64,6 +64,11 @@
             <artifactId>aws-java-sdk-cognitoidp</artifactId>
             <version>1.11.875</version>
         </dependency>
+        <dependency>
+            <groupId>com.amazonaws</groupId>
+            <artifactId>aws-java-sdk-ses</artifactId>
+            <version>1.11.875</version>
+        </dependency>
         <dependency>
             <groupId>software.amazon.ion</groupId>
             <artifactId>ion-java</artifactId>