rework vehicle handling

frontend/src/pages/FahrzeugDetail.tsx

@@ -14,6 +14,7 @@ import {
   Fab,
   FormControl,
   Grid,
+  IconButton,
   InputLabel,
   MenuItem,
   Paper,

frontend/src/services/incidents.ts

@@ -216,7 +216,7 @@ export const incidentsApi = {
     const response = await api.get<{ success: boolean; data: IncidentListResponse }>(
       `/api/incidents?${params.toString()}`
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;
@@ -230,7 +230,7 @@ export const incidentsApi = {
     const response = await api.get<{ success: boolean; data: EinsatzStats }>(
       `/api/incidents/stats${params}`
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;
@@ -243,7 +243,7 @@ export const incidentsApi = {
     const response = await api.get<{ success: boolean; data: EinsatzDetail }>(
       `/api/incidents/${id}`
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;
@@ -257,7 +257,7 @@ export const incidentsApi = {
       '/api/incidents',
       payload
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;
@@ -271,7 +271,7 @@ export const incidentsApi = {
       `/api/incidents/${id}`,
       payload
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;

frontend/src/services/members.ts

@@ -55,7 +55,7 @@ export const membersService = {
     const response = await api.get<ApiListResponse<MemberListItem>>(
       `/api/members?${params.toString()}`
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return {
@@ -72,7 +72,7 @@ export const membersService = {
     const response = await api.get<ApiItemResponse<MemberWithProfile>>(
       `/api/members/${userId}`
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;
@@ -90,7 +90,7 @@ export const membersService = {
       `/api/members/${userId}/profile`,
       data
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;
@@ -109,7 +109,7 @@ export const membersService = {
       `/api/members/${userId}`,
       data
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;
@@ -120,7 +120,7 @@ export const membersService = {
    */
   async getMemberStats(): Promise<MemberStats> {
     const response = await api.get<ApiItemResponse<MemberStats>>('/api/members/stats');
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;

frontend/src/services/vehicles.ts

@@ -15,7 +15,7 @@ async function unwrap<T>(
   promise: ReturnType<typeof api.get<{ success: boolean; data: T }>>
 ): Promise<T> {
   const response = await promise;
-  if (!response.data?.data) {
+  if (response.data?.data === undefined || response.data?.data === null) {
     throw new Error('Invalid API response');
   }
   return response.data.data;
@@ -47,7 +47,7 @@ export const vehiclesApi = {
       '/api/vehicles',
       payload
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;
@@ -58,7 +58,7 @@ export const vehiclesApi = {
       `/api/vehicles/${id}`,
       payload
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;
@@ -83,7 +83,7 @@ export const vehiclesApi = {
       `/api/vehicles/${id}/wartung`,
       payload
     );
-    if (!response.data?.data) {
+    if (response.data?.data === undefined || response.data?.data === null) {
       throw new Error('Invalid API response');
     }
     return response.data.data;