Ot.delete template

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

@@ -10,4 +10,7 @@ public interface IProtectedEmailerProcessor {
 
   /** Loads an HTML email template from cloud storage. */
   LoadTemplateResponse loadTemplate(JWTData userData, String templateName);
+
+  /** 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

@@ -28,6 +28,7 @@ public Router initializeRouter(Vertx vertx) {
 
     registerAddTemplate(router);
     registerLoadTemplate(router);
+    registerDeleteTemplate(router);
 
     return router;
   }
@@ -46,7 +47,7 @@ private void handleAddTemplate(RoutingContext ctx) {
 
     end(ctx.response(), 200);
   }
-
+  
   private void registerLoadTemplate(Router router) {
     Route loadTemplate = router.get("/load_template/:template_name");
     loadTemplate.handler(this::handleLoadTemplate);
@@ -60,4 +61,18 @@ private void handleLoadTemplate(RoutingContext ctx) {
 
     end(ctx.response(), 200, JsonObject.mapFrom(loadTemplateResponse).toString());
   }
+
+  private void registerDeleteTemplate(Router router) {
+    Route deleteTemplate = router.delete("/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

@@ -4,16 +4,11 @@
 import com.codeforcommunity.auth.JWTData;
 import com.codeforcommunity.dto.emailer.AddTemplateRequest;
 import com.codeforcommunity.dto.emailer.LoadTemplateResponse;
-import com.codeforcommunity.dto.leaderboard.LeaderboardEntry;
-import com.codeforcommunity.enums.PrivilegeLevel;
-import com.codeforcommunity.enums.ReservationAction;
 import com.codeforcommunity.exceptions.UserDoesNotExistException;
 import com.codeforcommunity.requester.S3Requester;
 
 import org.jooq.DSLContext;
 
-import java.util.List;
-
 import static org.jooq.impl.DSL.count;
 import static org.jooq.generated.tables.Users.USERS;
 import org.jooq.generated.tables.records.UsersRecord;
@@ -58,4 +53,10 @@ public LoadTemplateResponse loadTemplate(JWTData userData, String templateName)
 
     return loadTemplateResponse;
   }
+
+  @Override
+  public void deleteTemplate(JWTData userData, String templateName) {
+    assertAdminOrSuperAdmin(userData.getPrivilegeLevel());
+    S3Requester.deleteHTML(templateName, TEMPLATE_DIR);
+  }
 }

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

@@ -1,12 +1,14 @@
 package com.codeforcommunity.requester;
 
+import com.amazonaws.AmazonServiceException;
 import com.amazonaws.SdkClientException;
 import com.amazonaws.auth.AWSStaticCredentialsProvider;
 import com.amazonaws.auth.BasicAWSCredentials;
 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.GetObjectRequest;
 import com.amazonaws.services.s3.model.ObjectMetadata;
 import com.amazonaws.services.s3.model.PutObjectRequest;
@@ -15,10 +17,10 @@
 import com.codeforcommunity.dto.emailer.LoadTemplateResponse;
 import com.codeforcommunity.exceptions.BadRequestHTMLException;
 import com.codeforcommunity.exceptions.BadRequestImageException;
+import com.codeforcommunity.exceptions.InvalidURLException;
 import com.codeforcommunity.exceptions.S3FailedUploadException;
 import com.codeforcommunity.exceptions.InvalidURLException;
 import com.codeforcommunity.propertiesLoader.PropertiesLoader;
-
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -215,8 +217,8 @@ 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 '/').
@@ -282,7 +284,7 @@ public static String uploadHTML(
 
     return String.format("%s/%s/%s", externs.getBucketPublicUrl(), directoryName, name);
   }
-
+  
   // helper to check whether the given path exists
   public static boolean pathExists(String path) {
     return externs.getS3Client().doesObjectExist(externs.getBucketPublic(), path);
@@ -305,7 +307,7 @@ public static LoadTemplateResponse loadHTML(String name, String directoryName) {
       throw new InvalidURLException();
     }
 
-    // Create the request to delete the HTML
+    // Create the request to get the HTML
     GetObjectRequest awsRequest = new GetObjectRequest(externs.getBucketPublic(), htmlPath);
 
     S3Object HTMLFile = externs.getS3Client().getObject(awsRequest);
@@ -315,7 +317,7 @@ public static LoadTemplateResponse loadHTML(String name, String directoryName) {
       while ((c = HTMLFile.getObjectContent().read()) != -1) {
         content.append((char) c);
       }
-    } catch(IOException e) {
+    } catch (IOException e) {
       throw new BadRequestHTMLException("HTML file could not be decoded to string");
     }
 
@@ -325,4 +327,25 @@ public static LoadTemplateResponse loadHTML(String name, String directoryName) {
 
     return new LoadTemplateResponse(HTMLContent, HTMLFile.getKey(), htmlAuthor);
   }
+
+  /**
+   * 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 '/').
+   * @throws InvalidURLException if the file does not exist.
+   * @throws SdkClientException if the deletion from S3 failed.
+   */
+  public static void deleteHTML(String name, String directoryName) {
+    String htmlPath = directoryName + "/" + name + "_template.html";
+
+    if (!pathExists(htmlPath)) {
+      throw new InvalidURLException();
+    }
+
+    // Create the request to delete the HTML
+    DeleteObjectRequest awsRequest = new DeleteObjectRequest(externs.getBucketPublic(), htmlPath);
+
+    externs.getS3Client().deleteObject(awsRequest);
+  }
 }