import React, {
  useState,
  useEffect,
  forwardRef,
  useImperativeHandle,
  useCallback,
  useRef,
} from 'react';
import { Table, Tag, Space, Button, message, Modal, Spin } from 'antd';
import type { ColumnsType } from 'antd/es/table';
import EvaluateTemplateTable from '@/components/EvaluateTemplateTable';
import { getTemplateDetail } from '@/servers/api/supplierEvaluate';
import type { Dispatch } from 'umi';
import { connect, useIntl } from 'umi';
import type { SupplierTaskModelState } from '@/models/supplierTaskManage';

// 组件接收的Props定义
interface DivisionStepProps {
  supplierTaskManage: SupplierTaskModelState;
  dispatch: Dispatch;
  innerRef?: any; // 使用 innerRef 作为属性名
}

// 评价方式枚举
// 注意：type值是根据用户是否关联了指标自动计算的，不是由用户直接选择的
// 默认为0(按评价单)，当用户关联了指标则为1(按指标)
enum EvaluateType {
  ALL = 0, // 按评价单评价(全部指标)
  INDICATOR = 1, // 按指标评价(部分指标)
}

// 定义组件，使用 innerRef 代替直接的 ref
const DivisionStepComponent = (props: DivisionStepProps) => {
  const intl = useIntl();
  const { supplierTaskManage, dispatch, innerRef } = props;

  // 从 model 获取表单数据，避免通过 props 层层传递
  const { taskFormData, mode } = supplierTaskManage;

  // 从上一步获取的评价人员列表
  const [evaluators, setEvaluators] = useState<SupplierTaskManage.PersonnelItem[]>([]);

  // 选中的行keys
  const [selectedRowKeys, setSelectedRowKeys] = useState<React.Key[]>([]);

  // 指标列表 - 不再直接使用mockIndicators，而是从templateData派生
  const [indicators, setIndicators] = useState<SupplierTaskManage.IndicatorItem[]>([]);

  // 评价指标模板查看弹窗可见性
  const [templateViewModalVisible, setTemplateViewModalVisible] = useState(false);

  // 批量指标设置弹窗可见性
  const [batchTemplateModalVisible, setBatchTemplateModalVisible] = useState(false);

  // 批量选择的模板项
  const [batchSelectedTemplateItems, setBatchSelectedTemplateItems] = useState<any[]>([]);

  // 当前查看的用户ID
  const [currentUserId, setCurrentUserId] = useState<string>('');

  // 模板数据
  const [templateData, setTemplateData] = useState<any[]>([]);

  // 加载状态
  const [loading, setLoading] = useState<boolean>(false);

  // 选中的指标项
  const [selectedTemplateItems, setSelectedTemplateItems] = useState<any[]>([]);

  // 查看指标分工弹窗可见性
  const [viewModalVisible, setViewModalVisible] = useState(false);

  // 查看模式下的过滤后指标数据
  const [filteredIndicators, setFilteredIndicators] = useState<any[]>([]);

  // 获取当前用户的已分配指标ID
  const getCurrentUserSelectedIds = useCallback(() => {
    if (!currentUserId) return [];

    // 直接从 taskFormData.userList 中获取当前用户的指标ID
    const currentUser = taskFormData.userList?.find((user: any) => user.id === currentUserId);
    return currentUser?.indicatorIds || [];
  }, [currentUserId, taskFormData.userList]);

  // 根据指标ID过滤模板数据
  const filterTemplateDataByIds = useCallback((data: any[], indicatorIds: string[]) => {
    // 如果indicatorIds为空，表示显示所有模板数据(按评价单评价)
    if (!indicatorIds || indicatorIds.length === 0) {
      return data;
    }

    // 按指标ID过滤
    const filtered = [];
    for (const stItem of data) {
      const ndItems = [];
      if (stItem.indicatorNdList) {
        for (const ndItem of stItem.indicatorNdList) {
          const matched = indicatorIds.some((id) => String(id) === String(ndItem.id));
          if (matched) {
            ndItems.push(ndItem);
          }
        }
      }

      if (ndItems.length > 0) {
        filtered.push({
          ...stItem,
          indicatorNdList: ndItems,
        });
      }
    }
    return filtered;
  }, []);

  // 获取模板详情 先写死 "1937123786334322688" 省的一步一步操作
  const fetchTemplateDetail = async (templateId: string) => {
    if (!templateId) return;

    try {
      setLoading(true);
      const res = await getTemplateDetail(templateId);
      if (res.success && res.data) {
        // 直接设置指标数据，无需转换
        if (res.data.indicatorStList && res.data.indicatorStList.length > 0) {
          setTemplateData(res.data.indicatorStList);

          // 更新指标列表
          const newIndicators = res.data.indicatorStList.map((item: any) => ({
            id: item.id,
            name: item.baseIndicator,
            description: item.descIndicator || '',
          }));

          // 更新indicators状态
          setIndicators(newIndicators);
        }
      } else {
        message.error(res.message || intl.formatMessage({ id: 'supplierTaskManage.message.fetchTemplatesFailed' }));
      }
    } catch (error) {
      console.error(intl.formatMessage({ id: 'supplierTaskManage.message.fetchTemplatesFailed' }), error);
      message.error(intl.formatMessage({ id: 'supplierTaskManage.message.fetchTemplatesFailed' }));
    } finally {
      setLoading(false);
    }
  };
  /**
   * 更新表单数据
   * 将本地状态同步到 Dva model
   * @param updatedData 要更新的部分数据
   */
  const updateFormData = (updatedData: any) => {
    // 通过dispatch更新model中的数据
    dispatch({
      type: 'supplierTaskManage/updateFormData', // action类型
      payload: {
        ...updatedData,
      },
    });
  };
  // 监听templateId变化，获取模板详情
  useEffect(() => {
    fetchTemplateDetail(taskFormData.templateId as string);
  }, []);

  // 处理行选择变化
  const handleSelectChange = (newSelectedRowKeys: React.Key[]) => {
    setSelectedRowKeys(newSelectedRowKeys);
  };

  // 打开指标分工弹窗
  const handleOpenDivisionModal = () => {
    if (selectedRowKeys.length === 0) {
      message.warning(intl.formatMessage({ id: 'supplierTaskManage.message.noSelectedEvaluators' }));
      return;
    }
    // 直接显示批量模板选择弹窗
    setBatchTemplateModalVisible(true);

    // 重置已选中的模板项
    setBatchSelectedTemplateItems([]);
  };

  // 处理批量模板指标选择
  const handleBatchTemplateItemsSelect = (selectedItems: any[]) => {
    setBatchSelectedTemplateItems(selectedItems);
  };

  // 关闭批量模板选择弹窗
  const handleCloseBatchTemplateModal = () => {
    setBatchTemplateModalVisible(false);
  };
  // 处理指标选择  提取二级指标id
  const getIndicatorNdListIds = (selectedItems: any[]) => {
    const indicatorNdList = selectedItems.map((item) => item.indicatorNdList);
    const indicatorNdListIds = indicatorNdList.flatMap((item) =>
      item.map((ndItem: any) => ndItem.id),
    );
    return indicatorNdListIds;
  };
  // 处理指标,将处理后的指标放到dva中,同步处理userList,展示table  第二个参数是判断是否是批量设置,
  // 如果批量则取 selectedRowKeys(table选中所有user)
  const handleIndicatorAssignment = (indicatorNdListIds: string[], userIds: string[]) => {
    // 读取dva中的数据，只克隆一次
    const indicatorList = JSON.parse(JSON.stringify(taskFormData?.indicatorList || []));
    const userList = JSON.parse(JSON.stringify(taskFormData?.userList || []));

    // 批量更新indicatorList和userList
    userIds.forEach((userId) => {
      // 更新indicatorList
      indicatorList.forEach((item: SupplierTaskManage.IndicatorItem) => {
        if (item.userId === userId) {
          item.indicatorIds = [...new Set([...(item.indicatorIds || []), ...indicatorNdListIds])];
        }
      });

      // 更新userList
      userList.forEach((item: SupplierTaskManage.PersonnelItem) => {
        if (item.id === userId) {
          item.indicatorIds = indicatorNdListIds;
        }
      });
    });

    // 只调用一次updateFormData
    updateFormData({
      indicatorList,
      userList,
    });
  };
  // 保存指标分配
  const handleSaveIndicatorAssignment = () => {
    if (!currentUserId) {
      message.warning(intl.formatMessage({ id: 'supplierTaskManage.message.noSelectedEvaluators' }));
      return;
    }
    // 将选择回来的指标提取二级指标id
    const indicatorNdListIds = getIndicatorNdListIds(selectedTemplateItems);
    handleIndicatorAssignment(indicatorNdListIds, [currentUserId]);
    setTemplateViewModalVisible(false);
    message.success(intl.formatMessage({ id: 'supplierTaskManage.message.evaluatorDivisionSet' }));
  };

  // 批量设置指标分工
  const handleBatchSetDivision = () => {
    // 将选择回来的指标提取二级指标id
    const indicatorNdListIds = getIndicatorNdListIds(batchSelectedTemplateItems);
    const userIds = selectedRowKeys.map((key) => key.toString());
    handleIndicatorAssignment(indicatorNdListIds, userIds);
    setBatchTemplateModalVisible(false);
    message.success(intl.formatMessage(
      { id: 'supplierTaskManage.message.batchDivisionSet' },
      { count: selectedRowKeys.length }
    ));
  };

  // 处理单个评价人员的指标分工
  const handleAssignIndicators = (userId: string) => {
    setCurrentUserId(userId);

    // 重置已选中的指标项
    setSelectedTemplateItems([]);
    // 打开模态框
    setTemplateViewModalVisible(true);
  };

  // 关闭模板查看模态框
  const handleCloseTemplateViewModal = () => {
    setTemplateViewModalVisible(false);
  };

  // 处理模板指标选择
  const handleTemplateItemsSelect = (selectedItems: any[]) => {
    setSelectedTemplateItems(selectedItems);
  };

  // 查看评价人员的指标分工
  const handleViewAssignment = (person: SupplierTaskManage.PersonnelItem) => {
    const assignment = person.indicatorIds;
    if (!assignment) {
      message.info(intl.formatMessage({ id: 'supplierTaskManage.message.noEvaluatorDivision' }));
      return;
    }

    setCurrentUserId(person.id);
    setLoading(true);

    // 获取该评价人员的指标ID
    const indicatorIds = person.indicatorIds;

    // 过滤模板数据
    const filtered = filterTemplateDataByIds(templateData, indicatorIds || []);
    setFilteredIndicators(filtered);

    setLoading(false);
    setViewModalVisible(true);
  };

  // 关闭查看模态框
  const handleCloseViewModal = () => {
    setViewModalVisible(false);
  };

  // 删除评价人员
  const handleRemoveEvaluator = (userId: string) => {
    Modal.confirm({
      title: intl.formatMessage({ id: 'supplierTaskManage.modal.delete.title' }),
      content: intl.formatMessage({ id: 'supplierTaskManage.modal.delete.content' }),
      okText: intl.formatMessage({ id: 'supplierTaskManage.button.confirm' }),
      cancelText: intl.formatMessage({ id: 'supplierTaskManage.button.cancel' }),
      onOk: () => {
        // 更新评价人员列表
        setEvaluators((prev) => prev.filter((e) => e.id !== userId));

        //更新dva中的userList
        dispatch({
          type: 'supplierTaskManage/deleteUser',
          payload: {
            userIds: [userId],
          },
        });

        message.success(intl.formatMessage({ id: 'supplierTaskManage.message.deleteSuccess' }));
      },
    });
  };

  // 从上一步获取评价人员列表 - 避免频繁更新
  useEffect(() => {
    if (!taskFormData.userList) return;
    setEvaluators(taskFormData.userList as SupplierTaskManage.PersonnelItem[]);
  }, [taskFormData.userList]);

  // 暴露给父组件的方法
  useImperativeHandle(innerRef, () => ({
    validate: () => {
      if (evaluators.length === 0) {
        return {
          valid: false,
          message: intl.formatMessage({ id: 'supplierTaskManage.message.noEvaluatorAssigned' }),
        };
      }
      return { valid: true };
    },
  }));

  // 选择完
  // 获取当前评价人员名称
  const getCurrentEvaluatorName = () => {
    const evaluator = evaluators.find((e) => e.id === currentUserId);
    return evaluator ? evaluator.name : currentUserId;
  };

  // 表格列定义
  const columns: ColumnsType<SupplierTaskManage.PersonnelItem> = [
    {
      title: intl.formatMessage({ id: 'supplierTaskManage.column.name' }),
      dataIndex: 'name',
      key: 'name',
    },
    {
      title: intl.formatMessage({ id: 'supplierTaskManage.column.userDept' }),
      dataIndex: 'userDept',
      key: 'userDept',
    },
    {
      title: intl.formatMessage({ id: 'supplierTaskManage.column.id' }),
      dataIndex: 'id',
      key: 'id',
    },
    {
      title: intl.formatMessage({ id: 'supplierTaskManage.column.hasDivision' }),
      key: 'hasDivision',
      render: (_: any, record: SupplierTaskManage.PersonnelItem) => {
        if (!record.indicatorIds || record.indicatorIds.length === 0)
          return <Tag color="red">{intl.formatMessage({ id: 'supplierTaskManage.status.notSet' })}</Tag>;
        return <Tag color="green">{intl.formatMessage({ id: 'supplierTaskManage.status.set' })}</Tag>;
      },
    },
    {
      title: intl.formatMessage({ id: 'supplierTaskManage.column.action' }),
      key: 'action',
      render: (_: any, record: SupplierTaskManage.PersonnelItem) => (
        <Space size="middle">
          {mode !== 'division' && (
            <>
              <Button type="link" onClick={() => handleAssignIndicators(record.id)}>
                {intl.formatMessage({ id: 'supplierTaskManage.button.evaluatorDivision' })}
              </Button>
              <Button type="link" onClick={() => handleRemoveEvaluator(record.id)}>
                {intl.formatMessage({ id: 'supplierTaskManage.button.delete' })}
              </Button>
            </>
          )}
          <Button type="link" onClick={() => handleViewAssignment(record)}>
            {intl.formatMessage({ id: 'supplierTaskManage.button.view' })}
          </Button>
        </Space>
      ),
    },
  ];
  const rowSelection = {
    selectedRowKeys,
    onChange: handleSelectChange,
  };

  return (
    <div>
      {mode !== 'division' && (
        <div style={{ marginBottom: 16 }}>
          <Button
            type="primary"
            onClick={handleOpenDivisionModal}
            disabled={selectedRowKeys.length === 0}
          >
            {intl.formatMessage({ id: 'supplierTaskManage.button.setEvaluationDivision' })}
          </Button>
        </div>
      )}

      <Table
        rowKey="id"
        rowSelection={mode === 'division' ? undefined : rowSelection}
        columns={columns}
        dataSource={evaluators}
        pagination={false}
      />

      {/* 批量选择指标模板弹窗 */}
      <Modal
        title={intl.formatMessage(
          { id: 'supplierTaskManage.modal.batchDivision.title' },
          { count: selectedRowKeys.length }
        )}
        visible={batchTemplateModalVisible}
        onCancel={handleCloseBatchTemplateModal}
        width={1200}
        footer={[
          <Button key="cancel" onClick={handleCloseBatchTemplateModal}>
            {intl.formatMessage({ id: 'supplierTaskManage.button.cancel' })}
          </Button>,
          <Button key="save" type="primary" onClick={handleBatchSetDivision}>
            {intl.formatMessage({ id: 'supplierTaskManage.button.saveAndConfirm' })}
          </Button>,
        ]}
      >
        <Spin spinning={loading}>
          {templateData.length > 0 ? (
            <EvaluateTemplateTable
              value={templateData}
              isDetail={true}
              isCheck={true}
              onSelect={handleBatchTemplateItemsSelect}
            />
          ) : (
            <div style={{ textAlign: 'center', padding: '20px 0' }}>
              {loading ? intl.formatMessage({ id: 'supplierTaskManage.text.loading' }) : intl.formatMessage({ id: 'supplierTaskManage.text.noTemplateData' })}
            </div>
          )}
        </Spin>
      </Modal>

      {/* 设置评价指标分工 */}
      <Modal
        title={intl.formatMessage({ id: 'supplierTaskManage.modal.division.title' })}
        visible={templateViewModalVisible}
        onCancel={handleCloseTemplateViewModal}
        width={1200}
        footer={[
          <Button key="cancel" onClick={handleCloseTemplateViewModal}>
            {intl.formatMessage({ id: 'supplierTaskManage.button.cancel' })}
          </Button>,
          <Button key="save" type="primary" onClick={handleSaveIndicatorAssignment}>
            {intl.formatMessage({ id: 'supplierTaskManage.button.save' })}
          </Button>,
        ]}
      >
        <Spin spinning={loading}>
          {templateData.length > 0 ? (
            <EvaluateTemplateTable
              value={templateData}
              isDetail={true}
              isCheck={true}
              key={currentUserId}
              onSelect={handleTemplateItemsSelect}
              defaultSelectedIds={getCurrentUserSelectedIds()}
            />
          ) : (
            <div style={{ textAlign: 'center', padding: '20px 0' }}>
              {loading ? intl.formatMessage({ id: 'supplierTaskManage.text.loading' }) : intl.formatMessage({ id: 'supplierTaskManage.text.noTemplateData' })}
            </div>
          )}
        </Spin>
      </Modal>

      {/* 查看评价人员指标分工弹窗 */}
      <Modal
        title={intl.formatMessage(
          { id: 'supplierTaskManage.modal.viewDivision.title' },
          { name: getCurrentEvaluatorName() }
        )}
        visible={viewModalVisible}
        onCancel={handleCloseViewModal}
        width={1200}
        footer={[
          <Button key="close" onClick={handleCloseViewModal}>
            {intl.formatMessage({ id: 'supplierTaskManage.button.close' })}
          </Button>,
        ]}
      >
        <Spin spinning={loading}>
          {filteredIndicators.length > 0 ? (
            <EvaluateTemplateTable value={filteredIndicators} isDetail={true} />
          ) : (
            <div style={{ textAlign: 'center', padding: '20px 0' }}>
              {loading ? intl.formatMessage({ id: 'supplierTaskManage.text.loading' }) : intl.formatMessage({ id: 'supplierTaskManage.text.noDivisionData' })}
            </div>
          )}
        </Spin>
      </Modal>
    </div>
  );
};

/**
 * 连接 Dva model
 */
const ConnectedComponent = connect(
  ({ supplierTaskManage }: { supplierTaskManage: SupplierTaskModelState }) => ({
    supplierTaskManage,
  }),
)(DivisionStepComponent);

/**
 * 外层转发 ref 到 innerRef
 */
const DivisionStep = forwardRef((props: any, ref) => (
  <ConnectedComponent {...props} innerRef={ref} />
));

export default DivisionStep;