Proper handling of reservation validation errors

geneit_app/src/api/accommodations/AccommodationsReservationsApi.tsx

@@ -2,6 +2,12 @@ import { APIClient } from "../ApiClient";
 import { Family } from "../FamilyApi";
 import { Accommodation } from "./AccommodationListApi";
 
+export enum ValidateResaResult {
+  Success,
+  Error,
+  Conflict,
+}
+
 export interface AccommodationReservation {
   id: number;
   family_id: number;
@@ -151,13 +157,19 @@ export class AccommodationsReservationsApi {
   static async Validate(
     r: AccommodationReservation,
     accept: boolean
-  ): Promise<void> {
-    await APIClient.exec({
+  ): Promise<ValidateResaResult> {
+    const res = await APIClient.exec({
       method: "POST",
       uri: `/family/${r.family_id}/accommodations/reservation/${r.id}/validate`,
       jsonData: {
         validate: accept,
       },
+      allowFail: true,
     });
+
+    if (res.status >= 200 && res.status <= 299)
+      return ValidateResaResult.Success;
+    if (res.status === 409) return ValidateResaResult.Conflict;
+    return ValidateResaResult.Error;
   }
 }

geneit_app/src/routes/family/accommodations/AccommodationsReservationsRoute.tsx

@@ -34,6 +34,7 @@ import {
   AccommodationReservation,
   AccommodationsReservationsApi,
   AccommodationsReservationsList,
+  ValidateResaResult,
 } from "../../../api/accommodations/AccommodationsReservationsApi";
 import { useAlert } from "../../../hooks/context_providers/AlertDialogProvider";
 import { useConfirm } from "../../../hooks/context_providers/ConfirmDialogProvider";
@@ -186,9 +187,18 @@ export function AccommodationsReservationsRoute(): React.ReactElement {
     try {
       loadingMessage.show("Validation de la réservation en cours...");
 
+      setValidateResaAnchorEl(null);
       setActiveEvent(undefined);
 
-      await AccommodationsReservationsApi.Validate(r, validate);
+      const res = await AccommodationsReservationsApi.Validate(r, validate);
+
+      if (res === ValidateResaResult.Conflict) {
+        throw new Error(
+          "The reservation is in conflict with other reservations!"
+        );
+      } else if (res === ValidateResaResult.Error) {
+        throw new Error("Failed to validate the reservation!");
+      }
 
       reload();
       snackbar("La réservation a été mise à jour avec succès !");