Draft: Resolve "Average waiting and processing time aggregated over all labs"

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Closes #592 (closed)

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

@@ -33,6 +33,7 @@ import org.springframework.web.bind.annotation.RestController;
 import nl.tudelft.queue.dto.view.statistics.LabStatisticsViewDto;
 import nl.tudelft.queue.dto.view.statistics.RequestFrequencyViewDto;
 import nl.tudelft.queue.dto.view.statistics.RequestStatusViewDto;
+import nl.tudelft.queue.dto.view.statistics.EditionWaitTimeFrequencyDto;
 import nl.tudelft.queue.model.LabRequest;
 import nl.tudelft.queue.model.enums.RequestStatus;
 import nl.tudelft.queue.model.enums.RequestType;
@@ -186,4 +187,29 @@ public class EditionStatusController {
 		return ess.countRequestsPerRoom(rooms, requests);
 	}
 
+	/**
+	 * Used to construct a bar chart where average processing and waiting time is displayed on a lab-by-lab
+	 * basis.
+	 *
+	 * @param  editionId   The edition id to consider
+	 * @param  labs        The labs to consider
+	 * @param  assignments The assignments to consider
+	 * @param  rooms       The rooms to consider
+	 * @param  type        The request types to consider
+	 * @return             A list of dtos that correspond to the aforementioned information on a lab-by-lab
+	 *                     basis.
+	 */
+	@GetMapping("/edition/{editionId}/status/freq/time")
+	@PreAuthorize("@permissionService.canViewEditionStatus(#editionId)")
+	public List<EditionWaitTimeFrequencyDto> getSessionStatTimes(@PathVariable Long editionId,
+																 @RequestParam(required = false, defaultValue = "") List<Lab> labs,
+																 @RequestParam(required = false, defaultValue = "") List<Long> assignments,
+																 @RequestParam(required = false, defaultValue = "") List<Long> rooms,
+																 @RequestParam(required = false, defaultValue = "") List<RequestType> type) {
+
+		List<LabRequest> requests = ess.getFilteredRequests(labs, assignments, rooms, type);
+
+		return ess.getSessionStatTimes(requests);
+	}
+
 }