feat: add client management module

src/app/(modules)/clients/hooks/useClientMutations.ts

@@ -0,0 +1,61 @@
+'use client';
+
+import { useMutation, useQueryClient } from '@tanstack/react-query';
+import { toast } from 'sonner';
+
+import { clientService } from '@/services/api';
+import type { Client } from '@/types';
+import { clientKeys } from '../queries/clientKeys';
+import type { ClientFormValues } from './useClientForm';
+
+function optionalValue(value: string) {
+  const trimmed = value.trim();
+  return trimmed ? trimmed : null;
+}
+
+export function useSaveClientMutation({ onSaved }: { onSaved: () => void }) {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: (values: ClientFormValues) =>
+      clientService.saveClient({
+        id: values.id,
+        name: values.name.trim(),
+        email: values.email.trim(),
+        landline_number: values.landline_number.trim(),
+        address: values.address.trim(),
+        gst: optionalValue(values.gst),
+        pan: optionalValue(values.pan),
+        tan: optionalValue(values.tan),
+        contact_name: values.contact_name.trim(),
+        contact_phone_number: values.contact_phone_number.trim(),
+        contact_email: values.contact_email.trim(),
+        is_active: values.is_active,
+      }),
+    onSuccess: (_data, values) => {
+      toast.success(values.id ? 'Client updated' : 'Client created');
+      onSaved();
+      queryClient.invalidateQueries({ queryKey: clientKeys.all });
+    },
+    onError: (_error, values) => {
+      toast.error(values.id ? 'Failed to update client' : 'Failed to create client');
+    },
+  });
+}
+
+export function useClientStatusMutation() {
+  const queryClient = useQueryClient();
+  const mutation = useMutation({
+    mutationFn: (client: Client) => clientService.updateClientStatus(client.id, !client.is_active),
+    onSuccess: () => {
+      toast.success('Client status updated');
+      queryClient.invalidateQueries({ queryKey: clientKeys.all });
+    },
+    onError: () => toast.error('Failed to update client status'),
+  });
+
+  return {
+    ...mutation,
+    pendingClientId: mutation.isPending ? mutation.variables?.id : undefined,
+  };
+}