save the nad associated to the user's profile with the newly created study

src/main/java/org/gridsuite/studyconfig/server/controller/DiagramGridLayoutController.java

@@ -14,6 +14,7 @@
 import org.gridsuite.studyconfig.server.StudyConfigApi;
 import org.gridsuite.studyconfig.server.dto.diagramgridlayout.DiagramGridLayout;
 import org.gridsuite.studyconfig.server.service.DiagramGridLayoutService;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
@@ -29,6 +30,8 @@
 public class DiagramGridLayoutController {
     private final DiagramGridLayoutService diagramGridLayoutService;
 
+    public static final String DUPLICATE_FROM = "duplicateFrom";
+
     @PostMapping(consumes = APPLICATION_JSON_VALUE)
     @Operation(summary = "Save diagram grid layout")
     @ApiResponses(value = {@ApiResponse(responseCode = "200", description = "The newly created diagram grid layout UUID returned")})
@@ -61,4 +64,13 @@ public ResponseEntity<DiagramGridLayout> deleteDiagramGridLayout(
         diagramGridLayoutService.deleteDiagramGridLayout(diagramGridLayoutUuid);
         return ResponseEntity.ok().build();
     }
+
+    @PostMapping(params = { DUPLICATE_FROM })
+    @Operation(summary = "Duplicate diagram grid layout")
+    @ApiResponses(value = {@ApiResponse(responseCode = "201", description = "The diagram grid layout is duplicated")})
+    public ResponseEntity<UUID> duplicateDiagramGridLayout(@RequestParam(name = DUPLICATE_FROM) UUID diagramGridLayoutUuid) {
+        UUID newId = diagramGridLayoutService.duplicateDiagramGridLayout(diagramGridLayoutUuid);
+        return ResponseEntity.status(HttpStatus.CREATED).body(newId);
+    }
+
 }

src/main/java/org/gridsuite/studyconfig/server/service/DiagramGridLayoutService.java

@@ -56,4 +56,13 @@ public void updateDiagramGridLayout(UUID diagramGridLayoutUuid, DiagramGridLayou
 
         diagramGridLayoutRepository.save(diagramGridLayoutEntity);
     }
+
+    @Transactional
+    public UUID duplicateDiagramGridLayout(UUID diagramGridLayoutUuid) {
+        DiagramGridLayoutEntity entity = diagramGridLayoutRepository.findById(diagramGridLayoutUuid)
+                .orElseThrow(() -> new EntityNotFoundException("Diagram grid layout not found with id: " + diagramGridLayoutUuid));
+
+        DiagramGridLayoutEntity duplicate = DiagramGridLayoutMapper.toEntity(DiagramGridLayoutMapper.toDto(entity));
+        return diagramGridLayoutRepository.save(duplicate).getUuid();
+    }
 }

src/test/java/org/gridsuite/studyconfig/server/DiagramGridLayoutControllerTest.java

@@ -84,6 +84,20 @@ void testSaveDiagramGridLayout() throws Exception {
         assertThat(diagramGridLayoutToCheck).usingRecursiveComparison().isEqualTo(diagramGridLayoutToSave);
     }
 
+    @Test
+    void testDuplicateDiagramGridLayout() throws Exception {
+        DiagramGridLayoutEntity existing = diagramGridLayoutRepository.save(DiagramGridLayoutMapper.toEntity(createDiagramGridLayout()));
+
+        MvcResult mockMvcResult = mockMvc.perform(post("/v1/diagram-grid-layout")
+                        .queryParam("duplicateFrom", existing.getUuid().toString()))
+                .andExpect(status().isCreated())
+                .andReturn();
+
+        UUID duplicatedUuid = objectMapper.readValue(mockMvcResult.getResponse().getContentAsString(), UUID.class);
+        DiagramGridLayout duplicated = diagramGridLayoutService.getByDiagramGridLayoutUuid(duplicatedUuid);
+        assertThat(duplicated).usingRecursiveComparison().isEqualTo(DiagramGridLayoutMapper.toDto(existing));
+    }
+
     @Test
     void testSaveMapGridLayout() throws Exception {
         DiagramGridLayout mapLayoutToSave = createMapGridLayout();