/**
 * eQuery 管理页面
 *
 * 展示 AI 自动生成的电子质疑清单，支持状态过滤、回复、关闭操作。
 */

import React, { useState, useEffect, useCallback } from 'react';
import {
  Card,
  Table,
  Tag,
  Button,
  Select,
  Space,
  Typography,
  Badge,
  Modal,
  Input,
  message,
  Statistic,
  Row,
  Col,
  Tooltip,
  Empty,
} from 'antd';
import {
  AlertOutlined,
  CheckCircleOutlined,
  ClockCircleOutlined,
  SyncOutlined,
  CloseCircleOutlined,
  SendOutlined,
  EyeOutlined,
} from '@ant-design/icons';
import type { ColumnsType } from 'antd/es/table';
import * as iitProjectApi from '../api/iitProjectApi';
import type { Equery, EqueryStats } from '../api/iitProjectApi';
import { useIitProject } from '../context/IitProjectContext';

const { Text, Paragraph } = Typography;
const { TextArea } = Input;

const STATUS_CONFIG: Record<string, { color: string; label: string; icon: React.ReactNode }> = {
  pending: { color: 'warning', label: '待处理', icon: <ClockCircleOutlined /> },
  responded: { color: 'processing', label: '已回复', icon: <SendOutlined /> },
  reviewing: { color: 'purple', label: 'AI 复核中', icon: <SyncOutlined spin /> },
  closed: { color: 'success', label: '已关闭', icon: <CheckCircleOutlined /> },
  reopened: { color: 'error', label: '已重开', icon: <CloseCircleOutlined /> },
};

const SEVERITY_CONFIG: Record<string, { color: string; label: string }> = {
  error: { color: 'error', label: '严重' },
  warning: { color: 'warning', label: '警告' },
  info: { color: 'default', label: '信息' },
};

const EQueryPage: React.FC = () => {
  const { projectId } = useIitProject();

  const [equeries, setEqueries] = useState<Equery[]>([]);
  const [total, setTotal] = useState(0);
  const [stats, setStats] = useState<EqueryStats | null>(null);
  const [loading, setLoading] = useState(false);
  const [statusFilter, setStatusFilter] = useState<string | undefined>(undefined);
  const [page, setPage] = useState(1);

  // Respond modal
  const [respondModal, setRespondModal] = useState(false);
  const [respondTarget, setRespondTarget] = useState<Equery | null>(null);
  const [responseText, setResponseText] = useState('');
  const [responding, setResponding] = useState(false);

  // Detail modal
  const [detailModal, setDetailModal] = useState(false);
  const [detailTarget, setDetailTarget] = useState<Equery | null>(null);

  const fetchData = useCallback(async () => {
    if (!projectId) return;
    setLoading(true);
    try {
      const [listResult, statsResult] = await Promise.all([
        iitProjectApi.listEqueries(projectId, { status: statusFilter, page, pageSize: 20 }),
        iitProjectApi.getEqueryStats(projectId),
      ]);
      setEqueries(listResult.items);
      setTotal(listResult.total);
      setStats(statsResult);
    } catch {
      message.error('加载 eQuery 数据失败');
    } finally {
      setLoading(false);
    }
  }, [projectId, statusFilter, page]);

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

  const handleRespond = async () => {
    if (!respondTarget || !responseText.trim()) {
      message.warning('请输入回复内容');
      return;
    }
    setResponding(true);
    try {
      await iitProjectApi.respondEquery(projectId, respondTarget.id, { responseText });
      message.success('回复成功');
      setRespondModal(false);
      setResponseText('');
      fetchData();
    } catch {
      message.error('回复失败');
    } finally {
      setResponding(false);
    }
  };

  const handleClose = async (equery: Equery) => {
    try {
      await iitProjectApi.closeEquery(projectId, equery.id, { closedBy: 'manual' });
      message.success('已关闭');
      fetchData();
    } catch (err: any) {
      message.error(err.message || '关闭失败');
    }
  };

  const columns: ColumnsType<Equery> = [
    {
      title: '受试者',
      dataIndex: 'recordId',
      key: 'recordId',
      width: 100,
      render: (id: string) => <Text strong>{id}</Text>,
    },
    {
      title: '状态',
      dataIndex: 'status',
      key: 'status',
      width: 110,
      render: (status: string) => {
        const cfg = STATUS_CONFIG[status] || { color: 'default', label: status, icon: null };
        return <Tag icon={cfg.icon} color={cfg.color}>{cfg.label}</Tag>;
      },
    },
    {
      title: '严重程度',
      dataIndex: 'severity',
      key: 'severity',
      width: 90,
      render: (s: string) => {
        const cfg = SEVERITY_CONFIG[s] || { color: 'default', label: s };
        return <Tag color={cfg.color}>{cfg.label}</Tag>;
      },
    },
    {
      title: '质疑内容',
      dataIndex: 'queryText',
      key: 'queryText',
      ellipsis: true,
      render: (text: string) => (
        <Tooltip title={text}>
          <span>{text}</span>
        </Tooltip>
      ),
    },
    {
      title: '字段',
      dataIndex: 'fieldName',
      key: 'fieldName',
      width: 130,
      render: (f: string) => f ? <Text code style={{ fontSize: 11 }}>{f}</Text> : '—',
    },
    {
      title: '创建时间',
      dataIndex: 'createdAt',
      key: 'createdAt',
      width: 160,
      render: (d: string) => new Date(d).toLocaleString('zh-CN'),
    },
    {
      title: '操作',
      key: 'action',
      width: 160,
      render: (_: unknown, record: Equery) => (
        <Space size={4}>
          <Tooltip title="查看详情">
            <Button
              type="text"
              size="small"
              icon={<EyeOutlined />}
              onClick={() => { setDetailTarget(record); setDetailModal(true); }}
            />
          </Tooltip>
          {['pending', 'reopened'].includes(record.status) && (
            <Button
              type="link"
              size="small"
              onClick={() => { setRespondTarget(record); setRespondModal(true); }}
            >
              回复
            </Button>
          )}
          {record.status !== 'closed' && (
            <Button
              type="link"
              size="small"
              danger
              onClick={() => handleClose(record)}
            >
              关闭
            </Button>
          )}
        </Space>
      ),
    },
  ];

  return (
    <div>
      {/* Stats */}
      {stats && (
        <Row gutter={16} style={{ marginBottom: 16 }}>
          <Col span={4}>
            <Card size="small">
              <Statistic title="总计" value={stats.total} />
            </Card>
          </Col>
          <Col span={4}>
            <Card size="small">
              <Statistic title="待处理" value={stats.pending} valueStyle={{ color: '#faad14' }} prefix={<AlertOutlined />} />
            </Card>
          </Col>
          <Col span={4}>
            <Card size="small">
              <Statistic title="已回复" value={stats.responded} valueStyle={{ color: '#1677ff' }} />
            </Card>
          </Col>
          <Col span={4}>
            <Card size="small">
              <Statistic title="已关闭" value={stats.closed} valueStyle={{ color: '#52c41a' }} />
            </Card>
          </Col>
          <Col span={4}>
            <Card size="small">
              <Statistic title="已重开" value={stats.reopened} valueStyle={{ color: '#ff4d4f' }} />
            </Card>
          </Col>
          <Col span={4}>
            <Card size="small">
              <Statistic
                title="平均解决时长"
                value={stats.avgResolutionHours ?? '—'}
                suffix={stats.avgResolutionHours !== null ? 'h' : ''}
              />
            </Card>
          </Col>
        </Row>
      )}

      {/* Filter */}
      <Card size="small" style={{ marginBottom: 16 }}>
        <Space>
          <Select
            placeholder="按状态过滤"
            allowClear
            style={{ width: 160 }}
            value={statusFilter}
            onChange={(v) => { setStatusFilter(v); setPage(1); }}
            options={Object.entries(STATUS_CONFIG).map(([value, { label }]) => ({ value, label }))}
          />
          <Badge count={total} overflowCount={9999} style={{ backgroundColor: '#1677ff' }}>
            <Text type="secondary">条 eQuery</Text>
          </Badge>
        </Space>
      </Card>

      {/* Table */}
      <Card bodyStyle={{ padding: 0 }}>
        <Table<Equery>
          columns={columns}
          dataSource={equeries}
          rowKey="id"
          loading={loading}
          size="small"
          pagination={{
            current: page,
            total,
            pageSize: 20,
            onChange: setPage,
            showTotal: (t) => `共 ${t} 条`,
          }}
          locale={{ emptyText: <Empty description="暂无 eQuery，质控完成后将自动生成" /> }}
        />
      </Card>

      {/* Respond Modal */}
      <Modal
        title={`回复 eQuery - 受试者 ${respondTarget?.recordId}`}
        open={respondModal}
        onCancel={() => setRespondModal(false)}
        onOk={handleRespond}
        confirmLoading={responding}
        okText="提交回复"
      >
        {respondTarget && (
          <div style={{ marginBottom: 16 }}>
            <Paragraph type="secondary">{respondTarget.queryText}</Paragraph>
            {respondTarget.expectedAction && (
              <Paragraph type="secondary" italic>期望操作: {respondTarget.expectedAction}</Paragraph>
            )}
          </div>
        )}
        <TextArea
          rows={4}
          value={responseText}
          onChange={(e) => setResponseText(e.target.value)}
          placeholder="请输入回复说明（如：已修正数据 / 数据正确，原因是...）"
        />
      </Modal>

      {/* Detail Modal */}
      <Modal
        title={`eQuery 详情 - ${detailTarget?.id?.substring(0, 8)}`}
        open={detailModal}
        onCancel={() => setDetailModal(false)}
        footer={null}
        width={640}
      >
        {detailTarget && (
          <div>
            <Row gutter={[16, 12]}>
              <Col span={8}><Text type="secondary">受试者:</Text> <Text strong>{detailTarget.recordId}</Text></Col>
              <Col span={8}><Text type="secondary">字段:</Text> <Text code>{detailTarget.fieldName || '—'}</Text></Col>
              <Col span={8}><Text type="secondary">表单:</Text> {detailTarget.formName || '—'}</Col>
              <Col span={8}>
                <Text type="secondary">状态:</Text>{' '}
                <Tag color={STATUS_CONFIG[detailTarget.status]?.color}>{STATUS_CONFIG[detailTarget.status]?.label}</Tag>
              </Col>
              <Col span={8}>
                <Text type="secondary">严重程度:</Text>{' '}
                <Tag color={SEVERITY_CONFIG[detailTarget.severity]?.color}>{SEVERITY_CONFIG[detailTarget.severity]?.label}</Tag>
              </Col>
              <Col span={8}><Text type="secondary">创建时间:</Text> {new Date(detailTarget.createdAt).toLocaleString('zh-CN')}</Col>
            </Row>
            <Card size="small" title="质疑内容" style={{ marginTop: 16 }}>
              <Paragraph>{detailTarget.queryText}</Paragraph>
              {detailTarget.expectedAction && (
                <Paragraph type="secondary">期望操作: {detailTarget.expectedAction}</Paragraph>
              )}
            </Card>
            {detailTarget.responseText && (
              <Card size="small" title="CRC 回复" style={{ marginTop: 12 }}>
                <Paragraph>{detailTarget.responseText}</Paragraph>
                <Text type="secondary">回复时间: {detailTarget.respondedAt ? new Date(detailTarget.respondedAt).toLocaleString('zh-CN') : '—'}</Text>
              </Card>
            )}
            {detailTarget.reviewResult && (
              <Card size="small" title="AI 复核结果" style={{ marginTop: 12 }}>
                <Tag color={detailTarget.reviewResult === 'passed' ? 'success' : 'error'}>
                  {detailTarget.reviewResult === 'passed' ? '复核通过' : '复核不通过'}
                </Tag>
                {detailTarget.reviewNote && <Paragraph style={{ marginTop: 8 }}>{detailTarget.reviewNote}</Paragraph>}
              </Card>
            )}
            {detailTarget.resolution && (
              <Card size="small" title="关闭说明" style={{ marginTop: 12 }}>
                <Paragraph>{detailTarget.resolution}</Paragraph>
              </Card>
            )}
          </div>
        )}
      </Modal>
    </div>
  );
};

export default EQueryPage;