import { Button, Descriptions, Tag, Table, Typography, Spin, Alert, Space, Divider } from 'antd';
import type { TableColumnsType } from 'antd';
import { Link, useNavigate, useParams } from '@tanstack/react-router';
import type { PedidoSummary } from '@sar/api-interface';
import { SITUA_LABEL } from '@sar/api-interface';
import { useClientDetail } from '../../lib/queries/clients';
import { useClientOrders } from '../../lib/queries/orders';

const { Title } = Typography;

const ACTIVITY_COLOR: Record<string, string> = {
  active: 'success',
  alert: 'warning',
  inactive: 'default',
};
const ACTIVITY_LABEL: Record<string, string> = {
  active: 'Ativo',
  alert: 'Alerta',
  inactive: 'Inativo',
};

const orderColumns: TableColumnsType<PedidoSummary> = [
  {
    title: 'Nº',
    dataIndex: 'numPedSar',
    width: 120,
    render: (num: string, row: PedidoSummary) => (
      <Link to="/pedidos/$id" params={{ id: row.id }}>
        {num}
      </Link>
    ),
  },
  {
    title: 'Status',
    dataIndex: 'situa',
    width: 140,
    render: (s: number) => {
      const colorMap: Record<number, string> = {
        1: 'warning',
        2: 'processing',
        3: 'error',
        4: 'success',
      };
      return <Tag color={colorMap[s] ?? 'default'}>{SITUA_LABEL[s] ?? String(s)}</Tag>;
    },
  },
  {
    title: 'Total',
    dataIndex: 'total',
    width: 130,
    align: 'right',
    render: (v: string) =>
      Number(v).toLocaleString('pt-BR', { style: 'currency', currency: 'BRL' }),
  },
  {
    title: 'Data',
    dataIndex: 'dtPedido',
    width: 130,
    render: (v: string) => new Date(v).toLocaleDateString('pt-BR'),
  },
];

export function ClientDetailPage() {
  const { id } = useParams({ from: '/clientes/$id' });
  const idNum = Number(id);
  const navigate = useNavigate();
  const { data: client, isLoading: clientLoading, error: clientError } = useClientDetail(idNum);
  const { data: orders, isLoading: ordersLoading } = useClientOrders(idNum);

  if (clientLoading) return <Spin style={{ display: 'block', marginTop: 64 }} />;
  if (clientError || !client)
    return <Alert type="error" message="Cliente não encontrado." style={{ margin: 24 }} />;

  return (
    <div style={{ padding: 24 }}>
      <Space align="center" style={{ marginBottom: 16 }} wrap>
        <Link to="/clientes">← Clientes</Link>
        <Title level={3} style={{ margin: 0 }}>
          {client.razao ?? client.nome}
        </Title>
        <Tag color={ACTIVITY_COLOR[client.activityStatus]}>
          {ACTIVITY_LABEL[client.activityStatus]}
        </Tag>
        <Button
          type="primary"
          onClick={() => void navigate({ to: '/pedidos/novo', search: { clientId: id } })}
        >
          Novo Pedido
        </Button>
      </Space>

      <Descriptions bordered size="small" column={2} style={{ marginBottom: 24 }}>
        <Descriptions.Item label="Razão Social">{client.nome}</Descriptions.Item>
        <Descriptions.Item label="CNPJ / CPF">{client.cgcpf ?? '—'}</Descriptions.Item>
        <Descriptions.Item label="E-mail">{client.email ?? '—'}</Descriptions.Item>
        <Descriptions.Item label="Telefone">
          {client.ddd ? `(${client.ddd}) ` : ''}
          {client.telefone ?? '—'}
        </Descriptions.Item>
        {client.endereco && (
          <Descriptions.Item label="Endereço" span={2}>
            {client.endereco}
            {client.numEndereco ? `, ${client.numEndereco}` : ''}
            {client.bairro ? ` — ${client.bairro}` : ''}
            {client.cep ? ` — CEP ${client.cep}` : ''}
          </Descriptions.Item>
        )}
        <Descriptions.Item label="Limite de Crédito">
          {client.limiteCreditoStr
            ? Number(client.limiteCreditoStr).toLocaleString('pt-BR', {
                style: 'currency',
                currency: 'BRL',
              })
            : '—'}
        </Descriptions.Item>
        <Descriptions.Item label="Última Compra">
          {client.dtUltimaCompra
            ? new Date(client.dtUltimaCompra).toLocaleDateString('pt-BR')
            : '—'}
        </Descriptions.Item>
      </Descriptions>

      <Divider orientation="left">Últimos Pedidos</Divider>

      <Table<PedidoSummary>
        rowKey="id"
        columns={orderColumns}
        dataSource={orders ?? []}
        loading={ordersLoading}
        pagination={false}
        size="small"
        rowClassName={(row) => (row.situa === 1 ? 'row-pending' : '')}
      />
      <style>{`.row-pending td { background: #fffbe6 !important; }`}</style>
    </div>
  );
}