Ot.delete template

api/src/main/java/com/codeforcommunity/api/IProtectedEmailerProcessor.java

@@ -6,4 +6,6 @@
 public interface IProtectedEmailerProcessor {
   /** Adds an HTML email template to cloud storage. */
   void addTemplate(JWTData userData, AddTemplateRequest addTemplateRequest);
+  /** Deletes an HTML email template with the given name in cloud storage. */
+  void deleteTemplate(JWTData userData, String templateName);
 }

api/src/main/java/com/codeforcommunity/rest/subrouter/ProtectedEmailerRouter.java

@@ -25,6 +25,7 @@ public Router initializeRouter(Vertx vertx) {
     Router router = Router.router(vertx);
 
     registerAddTemplate(router);
+    registerDeleteTemplate(router);
 
     return router;
   }
@@ -43,4 +44,18 @@ private void handleAddTemplate(RoutingContext ctx) {
 
     end(ctx.response(), 200);
   }
+
+  private void registerDeleteTemplate(Router router) {
+    Route deleteTemplate = router.post("/delete_template/:template_name");
+    deleteTemplate.handler(this::handleDeleteTemplate);
+  }
+
+  private void handleDeleteTemplate(RoutingContext ctx) {
+    JWTData userData = ctx.get("jwt_data");
+    String templateName = RestFunctions.getRequestParameterAsString(ctx.request(), "template_name");
+
+    processor.deleteTemplate(userData, templateName);
+
+    end(ctx.response(), 200);
+  }
 }

service/src/main/java/com/codeforcommunity/processor/ProtectedEmailerProcessorImpl.java

@@ -17,4 +17,10 @@ public void addTemplate(JWTData userData, AddTemplateRequest addTemplateRequest)
         userData.getUserId(),
         addTemplateRequest.getTemplate());
   }
+
+  @Override
+  public void deleteTemplate(JWTData userData, String templateName) {
+    assertAdminOrSuperAdmin(userData.getPrivilegeLevel());
+    S3Requester.deleteHTML(templateName, "email_templates");
+  }
 }

service/src/main/java/com/codeforcommunity/requester/S3Requester.java

@@ -1,18 +1,20 @@
 package com.codeforcommunity.requester;
 
+import com.amazonaws.AmazonServiceException;
 import com.amazonaws.SdkClientException;
 import com.amazonaws.regions.Regions;
 import com.amazonaws.services.s3.AmazonS3;
 import com.amazonaws.services.s3.AmazonS3ClientBuilder;
 import com.amazonaws.services.s3.model.CannedAccessControlList;
+import com.amazonaws.services.s3.model.DeleteObjectRequest;
 import com.amazonaws.services.s3.model.ObjectMetadata;
 import com.amazonaws.services.s3.model.PutObjectRequest;
 import com.codeforcommunity.aws.EncodedImage;
 import com.codeforcommunity.exceptions.BadRequestHTMLException;
 import com.codeforcommunity.exceptions.BadRequestImageException;
+import com.codeforcommunity.exceptions.InvalidURLException;
 import com.codeforcommunity.exceptions.S3FailedUploadException;
 import com.codeforcommunity.propertiesLoader.PropertiesLoader;
-
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -206,8 +208,8 @@ public static String getFileNameWithoutExtension(String eventTitle, String suffi
   }
 
   /**
-   * Validate the given string encoding of HTML and upload it to the user upload S3 bucket.
-   * HTML will be overwritten in S3 if another file of the same name is uploaded.
+   * Validate the given string encoding of HTML and upload it to the user upload S3 bucket. HTML
+   * will be overwritten in S3 if another file of the same name is uploaded.
    *
    * @param name the desired name of the new file in S3 (without a file extension).
    * @param directoryName the desired directory of the file in S3 (without leading or trailing '/').
@@ -273,4 +275,31 @@ public static String uploadHTML(
 
     return String.format("%s/%s/%s", externs.getBucketPublicUrl(), directoryName, name);
   }
+
+  /**
+   * Delete the existing HTML file with the given name from the user uploads S3 bucket.
+   *
+   * @param name the name of the HTML file in S3 to be deleted.
+   * @param directoryName the directory of the file in S3 (without leading or trailing '/').
+   * @return previously existing HTML file URL if the deletion was successful.
+   * @throws InvalidURLException if the file does not exist.
+   * @throws SdkClientException if the deletion from S3 failed.
+   */
+  public static String deleteHTML(String name, String directoryName) {
+    String HTMLPath = directoryName + "/" + name;
+
+    // if the object does not exist, it throws a 403 for metadata?
+    try {
+      Boolean htmlExists = externs.getS3Client().doesObjectExist(externs.getBucketPublic(), HTMLPath);
+    } catch(AmazonServiceException e) {
+      throw new InvalidURLException();
+    }
+
+    // Create the request to delete the HTML
+    DeleteObjectRequest awsRequest = new DeleteObjectRequest(externs.getBucketPublic(), HTMLPath);
+
+    externs.getS3Client().deleteObject(awsRequest);
+
+    return String.format("%s/%s/%s", externs.getBucketPublicUrl(), directoryName, name);
+  }
 }