Change checkNetworkExistence endpoint's body to include network load status

src/main/java/org/gridsuite/study/server/controller/StudyController.java

@@ -279,17 +279,15 @@ public ResponseEntity<Void> cutAndPasteNode(@PathVariable("studyUuid") UUID stud
         return ResponseEntity.ok().build();
     }
 
-    @RequestMapping(value = "/studies/{studyUuid}/root-networks/{rootNetworkUuid}/network", method = RequestMethod.HEAD)
+    @GetMapping(value = "/studies/{studyUuid}/root-networks/{rootNetworkUuid}/network")
     @Operation(summary = "check study root network existence")
     @ApiResponses(value = {
         @ApiResponse(responseCode = "200", description = "The network does exist"),
         @ApiResponse(responseCode = "204", description = "The network doesn't exist")})
-    public ResponseEntity<Void> checkNetworkExistence(@PathVariable("studyUuid") UUID studyUuid, @PathVariable("rootNetworkUuid") UUID rootNetworkUuid) {
+    public ResponseEntity<RootNetworkStatusInfos> checkNetworkExistence(@PathVariable("studyUuid") UUID studyUuid, @PathVariable("rootNetworkUuid") UUID rootNetworkUuid) {
         UUID networkUUID = rootNetworkService.getNetworkUuid(rootNetworkUuid);
-        return networkStoreService.doesNetworkExist(networkUUID)
-            ? ResponseEntity.ok().build()
-            : ResponseEntity.noContent().build();
-
+        return ResponseEntity.ok().body(new RootNetworkStatusInfos(networkStoreService.doesNetworkExist(networkUUID),
+                rootNetworkService.getRootNetworkLoadStatus(rootNetworkUuid)));
     }
 
     @PostMapping(value = "/studies/{studyUuid}/root-networks/{rootNetworkUuid}/network", params = {"caseUuid"})

src/main/java/org/gridsuite/study/server/dto/RootNetworkStatusInfos.java

@@ -0,0 +1,4 @@
+package org.gridsuite.study.server.dto;
+
+public record RootNetworkStatusInfos(boolean exists, RootNetworkLoadStatus rootNetworkLoadStatus) {
+}

src/main/java/org/gridsuite/study/server/service/RootNetworkService.java

@@ -89,6 +89,11 @@ public UUID getNetworkUuid(UUID rootNetworkUuid) {
         return getRootNetwork(rootNetworkUuid).map(RootNetworkEntity::getNetworkUuid).orElseThrow(() -> new StudyException(NOT_FOUND, "Root network not found"));
     }
 
+    public RootNetworkLoadStatus getRootNetworkLoadStatus(UUID networkUuid) {
+        Optional<RootNetworkEntity> rootNetworkEntity = getRootNetwork(networkUuid);
+        return rootNetworkEntity.map(RootNetworkEntity::getLoadStatus).orElseThrow(() -> new StudyException(NOT_FOUND, "Root network not found"));
+    }
+
     public UUID getRootReportUuid(UUID rootNetworkUuid) {
         return getRootNetwork(rootNetworkUuid).map(RootNetworkEntity::getReportUuid).orElse(null);
     }

src/test/java/org/gridsuite/study/server/rootnetworks/RootNetworkControllerTest.java

@@ -49,8 +49,10 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.head;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
 /**
@@ -162,17 +164,18 @@ void testCheckNetworkExistenceReturnsOk() throws Exception {
     }
 
     @Test
-    void testCheckNetworkExistenceReturnsNotContent() throws Exception {
+    void testCheckNetworkExistenceReturnsNetworkNotFound() throws Exception {
         Map<String, Object> importParameters = new HashMap<>();
         importParameters.put("param1", "changedValue1, changedValue2");
         importParameters.put("param2", "changedValue");
         String userId = "userId";
         UUID studyUuid = createStudy(userId, importParameters);
         UUID firstRootNetworkUuid = studyTestUtils.getOneRootNetworkUuid(studyUuid);
         when(networkStoreService.getNetwork(NETWORK_UUID)).thenThrow(new PowsyblException("Network '" + NETWORK_UUID + "' not found"));
-        mockMvc.perform(head("/v1/studies/{studyUuid}/root-networks/{rootNetworkUuid}/network", studyUuid, firstRootNetworkUuid)
+        mockMvc.perform(get("/v1/studies/{studyUuid}/root-networks/{rootNetworkUuid}/network", studyUuid, firstRootNetworkUuid)
                         .header(USER_ID_HEADER, userId))
-                .andExpect(status().isNoContent());
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.exists").value(false));
     }
 
     @Test