import { createContext, useEffect, useState } from 'react';
import { useLocation } from 'react-router-dom';
import { Tree, Input, Divider } from 'antd';
import { CaretDownOutlined } from '@ant-design/icons';
import { useTranslation } from 'react-i18next';
import useProductsStore from '@/stores/Products/Index';
import { useProductsTypes, useProductsAuditStatesMapVal } from '@/hooks/useProductsSets';
import { groupBy, isEmpty, sortBy } from '@/utils/commons';
import NewProductModal from './NewProductModal';
import ContractRemarksModal from './ContractRemarksModal'

const flattenTreeFun = (tree) => {
  let flatList = [];
  const flatten = (nodes) => {
    nodes.forEach((node) => {
      flatList.push({ title: node.title, key: node.key });
      if (node.children) {
        flatten(node.children);
      }
    });
  };
  flatten(tree);
  return flatList;
};

const getParentKey = (key, tree) => {
  let parentKey;
  for (let i = 0; i < tree.length; i++) {
    const node = tree[i];
    if (node.children) {
      if (node.children.some((item) => item.key === key)) {
        parentKey = node.key;
      } else {
        const pKey = getParentKey(key, node.children);
        if (pKey) {
          parentKey = pKey;
        }
      }
    }
  }
  return parentKey;
};

const ProductsTree = ({ onNodeSelect, ...props }) => {
  const { t } = useTranslation();
  const location = useLocation();
  const isEditPage = location.pathname.includes('edit');
  const [agencyProducts, editingProduct, setEditingProduct] = useProductsStore((state) => [state.agencyProducts, state.editingProduct, state.setEditingProduct]);
  const [activeAgency] = useProductsStore((state) => [state.activeAgency]);
  const productsTypes = useProductsTypes();

  const [treeData, setTreeData] = useState([]); // render data
  const [rawTreeData, setRawTreeData] = useState([]);
  const [flattenTreeData, setFlattenTreeData] = useState([]);
  const [expandedKeys, setExpandedKeys] = useState([]);
  const [selectedKeys, setSelectedKeys] = useState([]);
  const [autoExpandParent, setAutoExpandParent] = useState(true);

  useEffect(() => {
    setExpandedKeys(productsTypes.map((item) => item.key)); // 全部展开
    return () => {}
  }, [productsTypes, activeAgency]);

  useEffect(() => {
    // 只显示有产品的类型;
    // const title = text || r.lgc_details?.['2']?.title || r.lgc_details?.['1']?.title || '';
    const hasDataTypes = Object.keys(agencyProducts);
    // const cityData = groupBy(productsSortByHT, (row) => `${row.info.city_id}-${row.info.city_name}`);
    const copyAgencyProducts = structuredClone(agencyProducts);
    Object.keys(copyAgencyProducts).map((key) => {
      const _cityProductsData = groupBy(copyAgencyProducts[key], (row) => `${row.info.city_name || '(空)'}`);
      copyAgencyProducts[key] = _cityProductsData;
    });
    // console.log(copyAgencyProducts);
    const _show = productsTypes
      .filter((kk) => hasDataTypes.includes(kk.value))
      .map((ele) => ({
          ...ele,
          title: ele.label,
          key: ele.value,
          children: (agencyProducts[ele.value] || []).reduce((arr, product) => {
            const lgc_map = product.lgc_details.reduce((rlgc, clgc) => ({ ...rlgc, [clgc.lgc]: clgc }), {});
            const combindCityList = product.info.city_list.indexOf(city => city.id === product.info.city_id) !== -1 ? product.info.city_list : [...product.info.city_list, { id: product.info.city_id, name: product.info.city_name }];
            const flatCityP = combindCityList.map(city => ({
              title: `【${city.name}】` + (product.info.title || lgc_map?.['2']?.title || lgc_map?.['1']?.title || product.info.product_title || ''),
              // key: `${ele.value}-${product.info.id}`,
              key: `${product.info.id}-${city.id}`,
              _raw: product,
              isLeaf: true,
            }));
            return arr.concat(flatCityP);
          }, []),
          // 增加`城市`层级
          // _children: Object.keys(copyAgencyProducts[ele.value] || []).map(city => {
          //   return {
          //     title: city,
          //     key: `${ele.value}-${city}`,
          //     children: copyAgencyProducts[ele.value][city],
          //   };
          // }),
        }));
    setTreeData(_show);
    setRawTreeData(_show);
    setFlattenTreeData(flattenTreeFun(_show));

    // setExpandedKeys(productsTypes.map((item) => item.key)); // 全部展开

    // setActiveKey(isEmpty(_show) ? [] : [_show[0].key]);
    return () => {};
  }, [productsTypes, agencyProducts]);

  useEffect(() => {
    if (isEmpty(editingProduct)) {
      return () => {};
    }
    const allKeysWithCity = [...editingProduct.info.city_list, { id: editingProduct.info.city_id, name: editingProduct.info.city_name }].map(
      (city) => `${editingProduct.info.id}-${city.id}`
    );
    setSelectedKeys(allKeysWithCity);

    return () => {};
  }, [editingProduct?.info?.id]);


  const [searchValue, setSearchValue] = useState('');
  const onSearch = ({ target: { value } }) => {
    // const { value } = e.target;
    if (isEmpty(value)) {
      setTreeData(rawTreeData);
      setSearchValue(value);
      return;
    }
    const newExpandedKeys = flattenTreeData
      .filter((item) => item.title.includes(value))
      .map((item) => getParentKey(item.key, rawTreeData))
      .filter((item, i, self) => item && self.indexOf(item) === i);
    setExpandedKeys(newExpandedKeys);
    setSearchValue(value);
    setAutoExpandParent(true);
    const matchTree = rawTreeData.map(node1 => {
      const _find = node1.children.filter(node2 => node2.title.includes(value));
      return _find.length > 0 ? {...node1, children: _find} : null;
    }).filter(node => node);
    setTreeData(matchTree);
  };
  const handleNodeSelect = (selectedKeys, { node }) => {
    if (node._raw) {
      setEditingProduct(node._raw);
      const allKeysWithCity = [...node._raw.info.city_list, { id: node._raw.info.city_id, name: node._raw.info.city_name }].map((city) => `${node._raw.info.id}-${city.id}`);
      setSelectedKeys(allKeysWithCity);
    } else {
      // 单击: 折叠/展开
      // const isExpand = expandedKeys.includes(selectedKeys[0]);
      // const _keys = isExpand ? expandedKeys.filter(k => k !== node.key) : [].concat(expandedKeys, selectedKeys);
      // setExpandedKeys(_keys);
    }
    if (typeof onNodeSelect === 'function') {
      onNodeSelect(selectedKeys, { node });
    }
  };
  const onExpand = (keys) => {
    setExpandedKeys(keys);
    setAutoExpandParent(false);
  };

  const titleRender = (node) => {
    const index = node.title.indexOf(searchValue);
    const beforeStr = node.title.substr(0, index);
    const afterStr = node.title.substr(index + searchValue.length);
    const highlighted = <span style={{ color: 'red' }}>{searchValue}</span>;

    return index > -1 ? (
      <span>
        {beforeStr}
        {highlighted}
        {afterStr}
      </span>
    ) : (
      <span>{node.title}</span>
    );
  };

  return (
    <div className={`${props.className} relative`} style={props.style}>
      <Input.Search placeholder='Search' onChange={onSearch} allowClear className='sticky top-1 z-20 mb-3' />
      {/* 编辑 */}
      {isEditPage && (
        <NewProductModal />
      )}
      <Divider type='vertical' />
      <ContractRemarksModal />
      <Tree
        blockNode
        showLine defaultExpandAll expandAction={'doubleClick'}
        selectedKeys={selectedKeys} multiple
        switcherIcon={<CaretDownOutlined />}
        onSelect={handleNodeSelect}
        treeData={treeData}
        expandedKeys={expandedKeys}
        autoExpandParent={autoExpandParent}
        onExpand={onExpand}
        titleRender={titleRender}
      />
    </div>
  );
};
export default ProductsTree;