The attribute link_code and is_open was added to the project

src/main/java/ntnu/idatt2016/v233/SmartMat/controller/group/GroupController.java

@@ -18,6 +18,7 @@ import org.springframework.web.bind.annotation.*;
 @RequestMapping("/api/groups")
 public class GroupController {
     private final GroupService groupService;
+    private long groupId;
 
     /**
      * Gets a group by its name
@@ -100,4 +101,18 @@ public class GroupController {
                 .map(ResponseEntity::ok)
                 .orElseGet(() -> ResponseEntity.notFound().build());
     }
+
+    /**
+     * Updates the open/closed status of the group with the specified ID.
+     *
+     * @param groupId the ID of the group to update
+     * @return a ResponseEntity with a Boolean value indicating whether the operation was successful
+     */
+    @PutMapping("/group/{groupId}/changeOpen")
+    public ResponseEntity<Boolean> changeOpenValue(@PathVariable("groupId") long groupId) {
+        this.groupId = groupId;
+        return groupService.OpenOrCloseGroup(groupId)
+                .map(ResponseEntity::ok)
+                .orElseGet(() -> ResponseEntity.notFound().build());
+    }
 }

src/main/java/ntnu/idatt2016/v233/SmartMat/entity/group/Group.java

@@ -41,6 +41,12 @@ public class Group {
     @Column(name = "group_name")
     String groupName;
 
+    @Column(name = "link_code")
+    String linkCode;
+
+    @Column(name = "is_open")
+    boolean open;
+
     @OneToMany
     @JoinColumn(name = "group_id")
     @JsonIgnoreProperties("group")

src/main/java/ntnu/idatt2016/v233/SmartMat/repository/group/GroupRepository.java

@@ -47,4 +47,7 @@ public interface GroupRepository extends JpaRepository<Group, Long> {
      * @return the group with the given id if it exists
      */
     Optional<Group> findByGroupId(long id);
+
+    @Query(value = "SELECT link_code FROM  groups", nativeQuery = true)
+    List<String> findAllLinkCode();
 }

src/main/java/ntnu/idatt2016/v233/SmartMat/service/group/GroupService.java

@@ -3,9 +3,10 @@ package ntnu.idatt2016.v233.SmartMat.service.group;
 import lombok.AllArgsConstructor;
 import ntnu.idatt2016.v233.SmartMat.entity.group.Group;
 import ntnu.idatt2016.v233.SmartMat.repository.group.GroupRepository;
-import ntnu.idatt2016.v233.SmartMat.util.LevelUtil;
+import ntnu.idatt2016.v233.SmartMat.util.GroupUtil;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
 import java.util.Optional;
 
 /**
@@ -52,6 +53,12 @@ public class GroupService {
             throw new IllegalArgumentException("Group must have a name");
         if(groupRepository.findByGroupName(group.getGroupName()).isPresent())
             throw new IllegalArgumentException("Group already exists");
+        String code = GroupUtil.generateUniqueCode();
+        List<String> codes = groupRepository.findAllLinkCode();
+        while (codes.contains(code)){
+            code = GroupUtil.generateUniqueCode();
+        }
+        group.setLinkCode(code);
         return groupRepository.save(group);
     }
 
@@ -77,7 +84,7 @@ public class GroupService {
         if (answer.isPresent()) {
             Group realGroup = answer.get();
             realGroup.setPoints(exp);
-            realGroup.setLevel(LevelUtil.getLevel(exp));
+            realGroup.setLevel(GroupUtil.getLevel(exp));
             return Optional.of(groupRepository.save(realGroup));
         }
         return Optional.empty();
@@ -93,8 +100,25 @@ public class GroupService {
         Optional<Group> answer = groupRepository.findByGroupId(id);
         if (answer.isPresent()) {
             Group realGroup = answer.get();
-            return Optional.of(LevelUtil.getProgressOfLevel(realGroup.getPoints()));
+            return Optional.of(GroupUtil.getProgressOfLevel(realGroup.getPoints()));
+        }
+        return Optional.empty();
+    }
+
+    /**
+     * Updates the open/closed status of the group with the specified ID.
+     *
+     * @param id the ID of the group to update
+     * @return an Optional with a Boolean value indicating whether the operation was successful
+     */
+    public Optional<Boolean> OpenOrCloseGroup(long id){
+        Optional<Group> answer = groupRepository.findByGroupId(id);
+        if (answer.isPresent()) {
+            Group realGroup = answer.get();
+            realGroup.setOpen(!realGroup.isOpen());
+            return Optional.of(groupRepository.save(realGroup).isOpen());
         }
         return Optional.empty();
     }
+
 }

src/main/java/ntnu/idatt2016/v233/SmartMat/util/LevelUtil.java → src/main/java/ntnu/idatt2016/v233/SmartMat/util/GroupUtil.java

 package ntnu.idatt2016.v233.SmartMat.util;
 
 
-// Formula: 10/(e^(-x/3))
-public class LevelUtil {
+import java.util.UUID;
 
+
+/**
+ * This class provide some useful methods used with the group entity.
+ *
+ * @author Pedro Cardona
+ * @version 1.0
+ * @since 25.04.2023
+ */
+public class GroupUtil {
+
+    /**
+     * Calculates the level of a group based on its experience points.
+     *
+     * @param exp The experience points of the group.
+     * @return The level of the group.
+     */
     public static int getLevel(long exp){
         return (int) (-3.0 * Math.log(10.0/ ((double)exp)));
     }
 
+    /**
+     * Calculates the progress of the current level of a group based on its experience points.
+     *
+     * @param exp The experience points of the group.
+     * @return The progress of the current level of the group as a percentage.
+     */
     public static int getProgressOfLevel(long exp) {
         int currentLevel = getLevel(exp);
         double expNextLevel = (10.0 / Math.pow(Math.E, (currentLevel+1) / -3.0));
@@ -15,7 +36,16 @@ public class LevelUtil {
         double baseNextLevel = expNextLevel - expCurrentLevel;
         double basedCurrentExp= (double) exp - expCurrentLevel;
         return (int) ((basedCurrentExp/ baseNextLevel )* 100.0);
+    }
 
+    /**
+     * Generates a unique six-digit code using UUID.
+     *
+     * @return A unique six-digit code.
+     */
+    public static String generateUniqueCode(){
+        String uuid = UUID.randomUUID().toString();
+        return uuid.replaceAll("-", "").substring(0, 6);
     }
 
 }

src/test/java/ntnu/idatt2016/v233/SmartMat/util/LevelUtilsTest.java

@@ -8,23 +8,23 @@ public class LevelUtilsTest {
 
     @Test
     public void testGetLevel() {
-        assertEquals(0, LevelUtil.getLevel(10));
-        assertEquals(2, LevelUtil.getLevel(20));
-        assertEquals(4, LevelUtil.getLevel(45));
-        assertEquals(6, LevelUtil.getLevel(90));
-        assertEquals(8, LevelUtil.getLevel(160));
+        assertEquals(0, GroupUtil.getLevel(10));
+        assertEquals(2, GroupUtil.getLevel(20));
+        assertEquals(4, GroupUtil.getLevel(45));
+        assertEquals(6, GroupUtil.getLevel(90));
+        assertEquals(8, GroupUtil.getLevel(160));
     }
 
     @Test
     public void testGetPercentOfLevel() {
-        assertEquals(0, LevelUtil.getProgressOfLevel(10));
-        assertEquals(25, LevelUtil.getProgressOfLevel(11));
-        assertEquals(20, LevelUtil.getProgressOfLevel(80));
-        assertEquals(10, LevelUtil.getProgressOfLevel(150));
-        assertEquals(30, LevelUtil.getProgressOfLevel(225));
-        assertEquals(17, LevelUtil.getProgressOfLevel(300));
-        assertEquals(62, LevelUtil.getProgressOfLevel(350));
-        assertEquals(85, LevelUtil.getProgressOfLevel(375));
+        assertEquals(0, GroupUtil.getProgressOfLevel(10));
+        assertEquals(25, GroupUtil.getProgressOfLevel(11));
+        assertEquals(20, GroupUtil.getProgressOfLevel(80));
+        assertEquals(10, GroupUtil.getProgressOfLevel(150));
+        assertEquals(30, GroupUtil.getProgressOfLevel(225));
+        assertEquals(17, GroupUtil.getProgressOfLevel(300));
+        assertEquals(62, GroupUtil.getProgressOfLevel(350));
+        assertEquals(85, GroupUtil.getProgressOfLevel(375));
     }
 
 }