Resolve "Fix Average Waiting Time & Average Processing Time"

What does this mr do?

• Read #760 (closed)

Actions taken to fix bug

• Read #760 (closed)

Does this MR meet the acceptance criteria?

• I have added a changelog entry to reflect the significant changes I made and the bug I fixed.
• A test was created to test the bug.
• I have updated the documentation accordingly.
• I adhere to the style guide.

Closes #760 (closed)

src/main/java/nl/tudelft/queue/controller/EditionStatusController.java

@@ -17,6 +17,7 @@
  */
 package nl.tudelft.queue.controller;
 
+import java.time.temporal.ChronoUnit;
 import java.util.List;
 import java.util.Map;
 import java.util.TreeSet;
@@ -41,6 +42,7 @@ import nl.tudelft.queue.model.enums.RequestType;
 import nl.tudelft.queue.model.labs.Lab;
 import nl.tudelft.queue.model.records.RequestCountRecord;
 import nl.tudelft.queue.service.EditionStatusService;
+import nl.tudelft.queue.service.SessionService;
 
 @Validated
 @RestController
@@ -52,6 +54,9 @@ public class EditionStatusController {
 	@Autowired
 	private AssignmentCacheManager aCache;
 
+	@Autowired
+	private SessionService sessionService;
+
 	/**
 	 * Creates and returns the data for a histogram regarding the status of requests over time. The data for
 	 * requests can be filtered on labs, assignments and rooms to only selectively count.
@@ -135,6 +140,7 @@ public class EditionStatusController {
 			@RequestParam(required = false, defaultValue = "") List<RequestType> type) {
 		List<LabRequest> requests = ess.getFilteredRequests(labs, assignments, rooms, type);
 
+		// we use ESS here even though it's not really edition statistics.
 		return new LabStatisticsViewDto(
 				ess.countDistinctUsers(requests),
 				ess.countDistinctAssistants(requests),
@@ -148,8 +154,8 @@ public class EditionStatusController {
 						.map(AssignmentCountStatisticsViewDto::getAssignmentName)
 						.orElse("N/A"), // order preserving in case of tie
 				ess.mostCountedName(ess.countRequestsPerRoom(rooms, requests)),
-				ess.averageWaitingTime(requests),
-				ess.averageProcessingTime(requests));
+				ess.averageWaitingTime(requests, ChronoUnit.MILLIS),
+				ess.averageProcessingTime(requests, ChronoUnit.MILLIS));
 	}
 
 	/**
@@ -185,7 +191,7 @@ public class EditionStatusController {
 	 * @param  assignments The assignments to filter on.
 	 * @param  rooms       The rooms to filter on.
 	 * @param  type        The request types to filter on.
-	 * @return             The names of assignments mapped to the number of times that room occurs.
+	 * @return             The names of assignments mapped to the number of times that room occurs.;
 	 */
 	@GetMapping("/edition/{editionId}/status/freq/room")
 	@PreAuthorize("@permissionService.canViewEditionStatus(#editionId)")