import { useEffect, useMemo, useState } from 'react';
import { Plus, Search, Trash2 } from 'lucide-react';
import { Breadcrumb, Button, Input, Modal, Select, Table, Tag, Textarea, type TableColumn } from '@/components/ui';
import { adminApi, type DictionaryItem, type EnterpriseApplication, type TenantOption } from '@/api/adminApi';

type EnterpriseBlacklistItem = DictionaryItem & {
  tenantId?: string;
  applicationId?: string;
  tenant?: TenantOption;
  application?: EnterpriseApplication;
  phoneNumber?: string;
  reason?: string | null;
};

export function AdminEnterpriseBlacklistPage() {
  const [items, setItems] = useState<EnterpriseBlacklistItem[]>([]);
  const [tenants, setTenants] = useState<TenantOption[]>([]);
  const [applications, setApplications] = useState<EnterpriseApplication[]>([]);
  const [enterpriseKeyword, setEnterpriseKeyword] = useState('');
  const [applicationKeyword, setApplicationKeyword] = useState('');
  const [phoneKeyword, setPhoneKeyword] = useState('');
  const [reasonKeyword, setReasonKeyword] = useState('');
  const [status, setStatus] = useState('all');
  const [appliedFilters, setAppliedFilters] = useState({ enterpriseKeyword: '', applicationKeyword: '', phoneNumber: '', reasonKeyword: '', status: 'all' });
  const [formTenantId, setFormTenantId] = useState('');
  const [formApplicationId, setFormApplicationId] = useState('');
  const [phone, setPhone] = useState('');
  const [reason, setReason] = useState('');
  const [modalOpen, setModalOpen] = useState(false);
  const [error, setError] = useState('');

  function loadData(filters = appliedFilters) {
    Promise.all([
      adminApi.listEnterpriseBlacklist(filters),
      adminApi.listTenants(),
      adminApi.listEnterpriseApplications(),
    ])
      .then(([blacklist, tenantItems, applicationItems]) => {
        setItems(blacklist as EnterpriseBlacklistItem[]);
        setTenants(tenantItems);
        setApplications(applicationItems);
        setError('');
      })
      .catch((failure: Error) => setError(failure.message || '企业黑名单加载失败'));
  }

  useEffect(() => {
    loadData();
  }, []);

  const modalApplications = applications.filter((application) => application.tenantId === formTenantId && application.status !== 'deleted');

  const columns = useMemo<Array<TableColumn<EnterpriseBlacklistItem>>>(() => [
    { key: 'enterprise', title: '企业名称', width: '180px', render: (record) => <strong>{record.tenant?.name ?? record.tenantId}</strong> },
    { key: 'application', title: '应用名称', width: '180px', render: (record) => <span>{record.application?.name ?? record.applicationId}</span> },
    { key: 'phone', title: '手机号码', width: '150px', render: (record) => <strong>{record.phoneNumber}</strong> },
    { key: 'createdAt', title: '入库时间', width: '170px', render: (record) => record.createdAt ?? '-' },
    { key: 'reason', title: '入库原因', render: (record) => record.reason ?? '-' },
    { key: 'status', title: '状态', width: '130px', render: (record) => <Tag tone={record.status === 'active' ? 'success' : 'neutral'}>{record.status === 'active' ? '生效中' : record.status === 'deleted' ? '已删除' : record.status ?? '-'}</Tag> },
    {
      key: 'actions',
      title: '操作',
      width: '130px',
      align: 'right',
      render: (record) => (
        <Button icon={<Trash2 size={15} />} onClick={() => adminApi.deleteEnterpriseBlacklist(record.id).then(() => loadData()).catch((failure: Error) => setError(failure.message))} size="sm" variant="danger">
          删除
        </Button>
      ),
    },
  ], [appliedFilters]);

  function addItem() {
    adminApi.createEnterpriseBlacklist({ tenantId: formTenantId, applicationId: formApplicationId, phoneNumber: phone, reason, status: 'active' })
      .then(() => {
        setFormTenantId('');
        setFormApplicationId('');
        setPhone('');
        setReason('');
        setModalOpen(false);
        loadData();
      })
      .catch((failure: Error) => setError(failure.message || '添加企业黑名单失败'));
  }

  return (
    <section className="page-stack admin-security-page">
      <div className="page-heading">
        <div>
          <Breadcrumb items={['安全控制', '企业黑名单']} />
          <h1>企业黑名单</h1>
        </div>
        <Button icon={<Plus size={16} />} onClick={() => setModalOpen(true)}>添加黑名单</Button>
      </div>
      {error ? <p className="form-error">{error}</p> : null}

      <div className="surface admin-security-filter">
        <Input
          label="企业名称"
          onChange={(event) => setEnterpriseKeyword(event.target.value)}
          placeholder="请输入企业名称"
          prefix={<Search size={16} />}
          value={enterpriseKeyword}
        />
        <Input
          label="企业应用"
          onChange={(event) => setApplicationKeyword(event.target.value)}
          placeholder="请输入企业应用名称"
          prefix={<Search size={16} />}
          value={applicationKeyword}
        />
        <Input label="手机号码" onChange={(event) => setPhoneKeyword(event.target.value)} placeholder="请输入手机号码" value={phoneKeyword} />
        <Input label="入库原因" onChange={(event) => setReasonKeyword(event.target.value)} placeholder="请输入入库原因" value={reasonKeyword} />
        <Select
          label="状态"
          onChange={(event) => setStatus(event.target.value)}
          options={[{ label: '全部状态', value: 'all' }, { label: '生效中', value: 'active' }]}
          value={status}
        />
        <div className="admin-security-filter__actions">
          <Button icon={<Search size={16} />} onClick={() => { const filters = { enterpriseKeyword: enterpriseKeyword.trim(), applicationKeyword: applicationKeyword.trim(), phoneNumber: phoneKeyword.trim(), reasonKeyword: reasonKeyword.trim(), status }; setAppliedFilters(filters); loadData(filters); }}>查询</Button>
          <Button onClick={() => { const filters = { enterpriseKeyword: '', applicationKeyword: '', phoneNumber: '', reasonKeyword: '', status: 'all' }; setEnterpriseKeyword(''); setApplicationKeyword(''); setPhoneKeyword(''); setReasonKeyword(''); setStatus('all'); setAppliedFilters(filters); loadData(filters); }} variant="ghost">重置</Button>
        </div>
      </div>

      <div className="surface admin-security-table-card">
        <Table columns={columns} data={items} emptyText="暂无企业黑名单记录" rowKey="id" />
      </div>

      <Modal
        footer={(
          <>
            <Button onClick={() => setModalOpen(false)} variant="ghost">取消</Button>
            <Button disabled={!formTenantId || !formApplicationId || !phone} onClick={addItem}>确认添加</Button>
          </>
        )}
        onClose={() => setModalOpen(false)}
        open={modalOpen}
        title="添加企业黑名单"
      >
        <div className="admin-security-form">
          <Select
            label="企业"
            onChange={(event) => { setFormTenantId(event.target.value); setFormApplicationId(''); }}
            options={[{ label: '请选择企业', value: '' }, ...tenants.map((item) => ({ label: item.name, value: item.id }))]}
            value={formTenantId}
          />
          <Select
            label="短信应用"
            onChange={(event) => setFormApplicationId(event.target.value)}
            options={[{ label: formTenantId ? '请选择应用' : '请先选择企业', value: '' }, ...modalApplications.map((item) => ({ label: item.name, value: item.id }))]}
            value={formApplicationId}
          />
          <Input label="手机号码" onChange={(event) => setPhone(event.target.value)} placeholder="请输入手机号码" value={phone} />
          <Textarea label="入库原因" onChange={(event) => setReason(event.target.value)} placeholder="请输入入库原因" rows={3} value={reason} />
        </div>
      </Modal>
    </section>
  );
}