feat: support batch wallet balance changes

apps/admin/src/pages/Wallets/index.tsx

@@ -27,7 +27,10 @@ const WalletsPage: React.FC = () => {
   const [transactions, setTransactions] = useState<any[]>([]);
   const [drawerOpen, setDrawerOpen] = useState(false);
   const [form] = Form.useForm();
+  const [batchForm] = Form.useForm();
   const [saving, setSaving] = useState(false);
+  const [selectedRowKeys, setSelectedRowKeys] = useState<React.Key[]>([]);
+  const [batchModalOpen, setBatchModalOpen] = useState(false);
 
   const fetchRows = useCallback(async () => {
     setLoading(true);
@@ -46,6 +49,11 @@ const WalletsPage: React.FC = () => {
     form.setFieldsValue({ type: 'recharge', amount: undefined, description: '' });
   };
 
+  const openBatchChange = () => {
+    batchForm.setFieldsValue({ type: 'recharge', amount: undefined, description: '' });
+    setBatchModalOpen(true);
+  };
+
   const submitChange = async () => {
     if (!selected) return;
     const values = await form.validateFields();
@@ -60,6 +68,30 @@ const WalletsPage: React.FC = () => {
     finally { setSaving(false); }
   };
 
+  const submitBatchChange = async () => {
+    const values = await batchForm.validateFields();
+    setSaving(true);
+    try {
+      const result: any = await api.post('/wallets/batch-change-balance', {
+        studentIds: selectedRowKeys,
+        ...values,
+      });
+      const paid = (result.results || []).reduce((sum: number, item: any) => {
+        return sum + (item.payments || []).reduce((paymentSum: number, bill: any) => paymentSum + Number(bill.paidAmount || 0), 0);
+      }, 0);
+      message.success(
+        paid > 0
+          ? `已批量更新 ${selectedRowKeys.length} 名学生余额，并自动补扣历史账单`
+          : `已批量更新 ${selectedRowKeys.length} 名学生余额`,
+      );
+      setBatchModalOpen(false);
+      setSelectedRowKeys([]);
+      batchForm.resetFields();
+      await fetchRows();
+    } catch (error: any) { message.error(error?.message || '批量余额操作失败'); }
+    finally { setSaving(false); }
+  };
+
   const showTransactions = async (row: WalletRow) => {
     setSelected(row); setDrawerOpen(true);
     try { setTransactions(await api.get('/wallets/transactions', { params: { studentId: row.studentId } }) as any[]); }
@@ -76,9 +108,19 @@ const WalletsPage: React.FC = () => {
   return <div>
     <div style={{ display: 'flex', justifyContent: 'space-between', gap: 12, marginBottom: 16, flexWrap: 'wrap' }}>
       <Space wrap><Input.Search allowClear placeholder="搜索姓名或学号" style={{ width: 240 }} onSearch={setKeyword} onChange={(event) => !event.target.value && setKeyword('')} /><span>仅看欠费</span><Switch checked={debtOnly} onChange={setDebtOnly} /></Space>
-      <Button icon={<ReloadOutlined />} onClick={fetchRows}>刷新</Button>
+      <Space wrap>
+        <PermissionButton permission="wallet:edit" type="primary" icon={<PlusOutlined />} disabled={selectedRowKeys.length === 0} onClick={openBatchChange}>批量充值/调账</PermissionButton>
+        <Button icon={<ReloadOutlined />} onClick={fetchRows}>刷新</Button>
+      </Space>
     </div>
-    <Table rowKey="studentId" loading={loading} dataSource={rows} columns={columns} pagination={{ pageSize: 15, showTotal: (total) => `共 ${total} 人` }} />
+    <Table
+      rowKey="studentId"
+      loading={loading}
+      dataSource={rows}
+      columns={columns}
+      rowSelection={{ selectedRowKeys, onChange: setSelectedRowKeys }}
+      pagination={{ pageSize: 15, showTotal: (total) => `共 ${total} 人` }}
+    />
     <Modal title={`${selected?.studentName || ''} - 余额操作`} open={!!selected && !drawerOpen} onCancel={() => setSelected(null)} onOk={submitChange} confirmLoading={saving} okText="确认">
       <Form form={form} layout="vertical">
         <Form.Item name="type" label="操作类型" rules={[{ required: true }]}><Radio.Group options={[{ label: '充值', value: 'recharge' }, { label: '调账', value: 'adjustment' }]} /></Form.Item>
@@ -86,6 +128,27 @@ const WalletsPage: React.FC = () => {
         <Form.Item name="description" label="备注"><Input.TextArea maxLength={300} /></Form.Item>
       </Form>
     </Modal>
+    <Modal
+      title={`批量余额操作（${selectedRowKeys.length} 人）`}
+      open={batchModalOpen}
+      onCancel={() => setBatchModalOpen(false)}
+      onOk={submitBatchChange}
+      confirmLoading={saving}
+      okText="确认批量修改"
+    >
+      <Form form={batchForm} layout="vertical">
+        <div style={{ marginBottom: 16, padding: 12, background: '#f5f5f5', borderRadius: 8 }}>
+          已选择 <strong>{selectedRowKeys.length}</strong> 名学生，将按相同金额批量修改水电费余额。
+        </div>
+        <Form.Item name="type" label="操作类型" rules={[{ required: true }]}>
+          <Radio.Group options={[{ label: '充值', value: 'recharge' }, { label: '调账', value: 'adjustment' }]} />
+        </Form.Item>
+        <Form.Item name="amount" label="变动金额（元/人）" extra="充值填正数；调减余额时填写负数。充值后会按最早账单优先自动补扣。" rules={[{ required: true, message: '请输入金额' }]}>
+          <InputNumber precision={2} style={{ width: '100%' }} addonBefore="¥" />
+        </Form.Item>
+        <Form.Item name="description" label="备注"><Input.TextArea maxLength={300} /></Form.Item>
+      </Form>
+    </Modal>
     <Drawer title={`${selected?.studentName || ''} - 余额流水`} width={680} open={drawerOpen} onClose={() => { setDrawerOpen(false); setSelected(null); }}>
       <Table rowKey="id" dataSource={transactions} pagination={{ pageSize: 10 }} columns={[
         { title: '时间', dataIndex: 'createdAt', render: (value: string) => dayjs(value).format('YYYY-MM-DD HH:mm') },