From 1861bb56bfddfc7256dcb25948636d88e1a9b6a2 Mon Sep 17 00:00:00 2001
From: Pedro Cardona <pedropca@stud.ntnu.no>
Date: Tue, 2 May 2023 10:41:46 +0200
Subject: [PATCH] Endpoint for cakeGraph was added
---
.../controller/group/WasteController.java | 12 +++++
.../SmartMat/service/group/WasteService.java | 13 +++++
.../v233/SmartMat/util/StatisticUtil.java | 50 +++++++++++++++++++
3 files changed, 75 insertions(+)
create mode 100644 src/main/java/ntnu/idatt2016/v233/SmartMat/util/StatisticUtil.java
diff --git a/src/main/java/ntnu/idatt2016/v233/SmartMat/controller/group/WasteController.java b/src/main/java/ntnu/idatt2016/v233/SmartMat/controller/group/WasteController.java
index a1547da3..efb3e036 100644
--- a/src/main/java/ntnu/idatt2016/v233/SmartMat/controller/group/WasteController.java
+++ b/src/main/java/ntnu/idatt2016/v233/SmartMat/controller/group/WasteController.java
@@ -67,4 +67,16 @@ public class WasteController {
return wasteService.getWasteOfCategoryByGroupId(groupId, CategoryUtil.getCategoryName(categoryNumber)).map(ResponseEntity::ok).orElseGet(() -> ResponseEntity.notFound().build());
}
+ /**
+ * Retrieve information about the cake diagram for a given group ID using a GET request.
+ *
+ * @param groupId The ID of the group for which to retrieve the cake diagram information.
+ * @return A ResponseEntity containing an array of doubles representing the cake diagram information if found,
+ * or a 404 Not Found response if not found.
+ */
+ @GetMapping("/statistic/cakeGraph/{groupId}")
+ public ResponseEntity<double[]> getInformationOfCakeGraph(@PathVariable("groupId") long groupId){
+ return wasteService.getCakeDiagram(groupId).map(ResponseEntity::ok).orElseGet(()->ResponseEntity.notFound().build());
+ }
+
}
diff --git a/src/main/java/ntnu/idatt2016/v233/SmartMat/service/group/WasteService.java b/src/main/java/ntnu/idatt2016/v233/SmartMat/service/group/WasteService.java
index a2b089c7..8f43267c 100644
--- a/src/main/java/ntnu/idatt2016/v233/SmartMat/service/group/WasteService.java
+++ b/src/main/java/ntnu/idatt2016/v233/SmartMat/service/group/WasteService.java
@@ -10,6 +10,7 @@ import ntnu.idatt2016.v233.SmartMat.entity.product.Product;
import ntnu.idatt2016.v233.SmartMat.repository.group.GroupRepository;
import ntnu.idatt2016.v233.SmartMat.repository.group.WasteRepository;
import ntnu.idatt2016.v233.SmartMat.repository.product.ProductRepository;
+import ntnu.idatt2016.v233.SmartMat.util.StatisticUtil;
import org.springframework.stereotype.Service;
import java.util.Optional;
@@ -64,4 +65,16 @@ public class WasteService {
return wasteRepository.findAllWasteOfOneCategoryFromGroup(groupId,categoryName);
}
+ /**
+ * Get the cake diagram for a group of waste.
+ *
+ * @param groupId The ID of the group for which to retrieve the cake diagram.
+ * @return An Optional containing an array of doubles representing the cake diagram for the group,
+ * or an empty Optional if the group is not found.
+ */
+ public Optional<double[]> getCakeDiagram(long groupId){
+ Optional<Group> group = groupRepository.findByGroupId(groupId);
+ return group.map(value -> StatisticUtil.getNumberOfWasteByCategoryName(wasteRepository.findByGroupId(value).get()));
+ }
+
}
diff --git a/src/main/java/ntnu/idatt2016/v233/SmartMat/util/StatisticUtil.java b/src/main/java/ntnu/idatt2016/v233/SmartMat/util/StatisticUtil.java
new file mode 100644
index 00000000..4ec0de83
--- /dev/null
+++ b/src/main/java/ntnu/idatt2016/v233/SmartMat/util/StatisticUtil.java
@@ -0,0 +1,50 @@
+package ntnu.idatt2016.v233.SmartMat.util;
+
+import ntnu.idatt2016.v233.SmartMat.entity.Waste;
+
+import java.sql.Date;
+import java.util.List;
+
+
+/**
+ * A utility class for calculating statistics related to waste and CO2 emissions.
+ */
+public class StatisticUtil {
+
+ /**
+ * Get the annual average amount of CO2 emissions per person.
+ *
+ * @param co2List The list of CO2 emissions for a group of people.
+ * @param numberOfPerson The number of people in the group.
+ * @param firstDate The date on which the group started tracking their CO2 emissions.
+ * @return The annual average amount of CO2 emissions per person.
+ */
+ private static double getAnnualAveragePerPerson(List<Double> co2List, int numberOfPerson, Date firstDate) {
+ java.util.Date currentDate = new java.util.Date();
+ long diffInMillis = currentDate.getTime() - firstDate.getTime();
+ long diffInDays = diffInMillis / (24 * 60 * 60 * 1000);
+ double co2Sum = 0.0;
+ for (double c02 : co2List) co2Sum += c02;
+ return co2Sum / (((double) diffInDays / 365.0) * (double) numberOfPerson);
+ }
+
+ /**
+ * Get the number of waste items for each category name in a list of waste items.
+ *
+ * @param wastes The list of waste items for which to calculate the number of items by category name.
+ * @return An array of doubles representing the number of waste items for each category name.
+ */
+ public static double[] getNumberOfWasteByCategoryName(List<Waste> wastes) {
+ double[] numberOfWastes = new double[5];
+ for (Waste waste : wastes) {
+ switch (waste.getEan().getCategory().getCategoryName()) {
+ case "meat, fish and chicken" -> numberOfWastes[0] += waste.getAmount();
+ case "baked goods and grains" -> numberOfWastes[1] += waste.getAmount();
+ case "dairy and egg" -> numberOfWastes[2] += waste.getAmount();
+ case "fruit and vegetables" -> numberOfWastes[3] += waste.getAmount();
+ default -> numberOfWastes[4] += waste.getAmount();
+ }
+ }
+ return numberOfWastes;
+ }
+}
\ No newline at end of file
--
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