import React, { Key, useEffect, useImperativeHandle, useState } from "react";
import { Transfer } from 'antd'
import { TransferItem, TransferProps } from 'antd/es/transfer';
import { ColumnsType } from 'antd/es/table';
import { difference } from "lodash";
import { TableRowSelection } from 'antd/es/table/interface';
import { KCIMTable } from "@/components/KCIMTable";
import { ProColumns } from "@ant-design/pro-components";
import { Tabs,Tree } from 'antd';

import { log } from "mathjs";
import { getAccountingSubjectList } from "../../accountingAccountSet/accountingSubMana/service";
import { getApportionmentLevelList } from "../../costAllocationSet/allocationLevelSet/service";
import { getResponsibilityCenterList } from "../../responsibilityCenterSet/responsibilityCenter/service";
import { findAllParents, renameChildListToChildren, searchLeaves } from "@/utils/tooljs";
import { getHasSetReportRelation } from "./service";



interface TableTransferProps extends TransferProps<TransferItem> {
    leftColumns: ProColumns[];
    rightColumns: ProColumns[];
    record: any,
    settingType: number,
    keyName: string,
    onSave: (selectedKeys: Key[], selectedRowKeys: any[], settingType: number) => void;
}

const flattenTreeData = (treeData:any[], childKey = 'children', parentKey = 'parentId') => {
    let result:any[] = [];

    function flatten(node:any, parentId = null) {
        // 创建一个新对象，包含原始节点的所有属性，除了 children，并添加 parentId
        const { [childKey]: _, ...flatNode } = node;
        result.push({ ...flatNode, [parentKey]: parentId });

        // 如果节点有子节点，递归扁平化这些子节点
        if (node[childKey] && node[childKey].length > 0) {
            node[childKey].forEach((childNode:any) => flatten(childNode, node.id));
        }
    }

    // 遍历每个根级节点
    treeData.forEach(node => flatten(node));

    return result;
}


function buildTree(flatData:any[], rootParentId = null, idKey = 'id', parentKey = 'parentId', childrenKey = 'children') {
    const nodeMap = new Map();

    // 首先，将所有节点存储到一个 Map 中，以便快速访问
    flatData.forEach(node => nodeMap.set(node[idKey], { ...node }));

    const tree:any[] = [];

    flatData.forEach(node => {
        const parentNode = nodeMap.get(node[parentKey]);

        if (parentNode) {
            // 检查父节点是否已经有了 children 属性
            if (!parentNode[childrenKey]) {
                parentNode[childrenKey] = [];
            }
            // 将当前节点添加到父节点的 children 数组中
            parentNode[childrenKey].push(nodeMap.get(node[idKey]));
        } else if (node[parentKey] === rootParentId) {
            // 如果没有父节点且 parentId 与根 parentId 匹配，则为根节点
            tree.push(nodeMap.get(node[idKey]));
        }else{
            tree.push(nodeMap.get(node[idKey]));
        }
    });

    // 清除那些 children 长度为 0 的节点的 children 属性
    function clearEmptyChildren(node:any) {
        if (node[childrenKey] && node[childrenKey].length === 0) {
            delete node[childrenKey];
        } else if (node[childrenKey]) {
            node[childrenKey].forEach(clearEmptyChildren);
        }
    }

    tree.forEach(clearEmptyChildren);

    return tree;
}


const TableTransfer = React.forwardRef(({ leftColumns, rightColumns, keyName, record, settingType, onSave, ...restProps }: TableTransferProps, ref) => {

    const [_data, _set_data] = useState<any>();
    const [targetKeys, setTargetKeys] = useState<string[]>(record.accountingIds ? [...((record.accountingIds).map((a: string) => Number(a)))] : []);
    const [datasource, set_datasource] = useState<any[]>([]);
    const [selectedKeys, setSelectedKeys] = useState<string[]>(record.accountingIds ? [...((record.accountingIds).map((a: string) => Number(a)))] : []);
    const [accountType, set_accountType] = useState(1);
    const [tabs, set_tabs] = useState<any[]>([]);


    //获取列表
    const getFuncList = async () => {

        if (settingType == 1) {
            const resp = await getAccountingSubjectList({ pageSize: 500, current: 1, accountType });
            if (resp) {
                const initData = await getHasSetReportRelation({ reportId: record.id, relation: settingType });
                if (initData) {
                    const hasSelectedKeys = initData.map((a: any) => a.code);
                    console.log(flattenTreeData(resp.list));
                    const hasSelectedRows = flattenTreeData(resp.list).filter((a: any) => hasSelectedKeys.includes(a.accountingCode));
                    const selectedKeys = hasSelectedRows.map((a: any) => a.id)
                    // setSelectedKeys(selectedKeys);
                    setTargetKeys(selectedKeys);
                }
                set_datasource(resp.list);
                _set_data(resp.list);
            }

        }
        if (settingType == 2) {
            const resp = await getApportionmentLevelList({ pageSize: 500, current: 1 });
            if (resp) {
                const initData = await getHasSetReportRelation({ reportId: record.id, relation: settingType });
                if (initData) {
                    const hasSelectedKeys = initData.map((a: any) => Number(a.id));
                    const hasSelectedRows = resp.list.filter((a: any) => hasSelectedKeys.includes(a.id));
                    const selectedKeys = hasSelectedRows.map((a: any) => a.id)
                    // setSelectedKeys(selectedKeys);
                    setTargetKeys(selectedKeys);
                }
                set_datasource(resp.list);
                _set_data(resp.list);
            }


        }
        if (settingType == 3) {
            const resp = await getResponsibilityCenterList({ pageSize: 500, current: 1 });
            //const opendedArr = renameChildListToChildren(resp.list, 'child');
            if (resp) {
                const initData = await getHasSetReportRelation({ reportId: record.id, relation: settingType });
                if (initData) {
                    const hasSelectedKeys = initData.map((a: any) => a.code);
                    const hasSelectedRows = resp.list.filter((a: any) => hasSelectedKeys.includes(a.responsibilityCode));
                    const selectedKeys = hasSelectedRows.map((a: any) => a.id)
                    // setSelectedKeys(selectedKeys);
                    setTargetKeys(selectedKeys);
                }
                set_datasource(renameChildListToChildren(resp.list, 'child'));
                _set_data(renameChildListToChildren(resp.list, 'child'));
            }

        }

    }

    const onChange = (nextTargetKeys: string[]) => {
        // console.log({ nextTargetKeys });
        setTargetKeys(nextTargetKeys);
    };

    const onSelectChange = (sourceSelectedKeys: string[], targetSelectedKeys: string[]) => {
        // console.log('sourceSelectedKeys:', sourceSelectedKeys, 'targetSelectedKeys:', targetSelectedKeys);
        setSelectedKeys([...sourceSelectedKeys, ...targetSelectedKeys]);
    };

    useImperativeHandle(ref, () => ({
        save: async () => {
            if(settingType == 1||settingType == 3){
                const items = flattenTreeData(datasource).filter(a => targetKeys.includes(a[`${keyName}`]));
                onSave(targetKeys, items, settingType);
            }else{
                const items = datasource.filter(a => targetKeys.includes(a[`${keyName}`]));
                onSave(targetKeys, items, settingType);
            }
            
        }
    }));


    const onTabChanged = (key: string) => {
        set_accountType(Number(key));
    }

    useEffect(() => {
        getFuncList();
    }, [accountType]);



    useEffect(() => {
        set_tabs([
            {
                label: '收入',
                key: 1,
            },
            {
                label: '支出',
                key: 2,
            },
        ])
    }, []);


    return (
        <div>
            {settingType == 1 && (
                <Tabs
                    defaultActiveKey={tabs.length > 0 ? tabs[0].key : undefined}
                    items={tabs}
                    key={'key'}
                    onChange={(key) => onTabChanged(key)}
                />
            )}
            <Transfer className='TableTransfer' showSearch
                titles={['待选项', '已选项']}
                locale={{
                    itemUnit: '项',
                    itemsUnit: '项',
                    searchPlaceholder: '请输入',
                }}
                oneWay={false}
                onChange={onChange}
                onSelectChange={onSelectChange}
                dataSource={settingType == 2?datasource:flattenTreeData(datasource)}
                rowKey={record => record[`${keyName}`]}
                targetKeys={targetKeys}
                selectedKeys={selectedKeys}
                filterOption={(inputValue, item) => {

                    if(settingType == 1){
                        return item['accountingName']!.indexOf(inputValue) !== -1
                    }
                    if(settingType == 2){
                        return item['shareName']!.indexOf(inputValue) !== -1
                    }
                    if(settingType == 3){
                        return item['responsibilityName']!.indexOf(inputValue) !== -1
                    }
                    return false

                }}
            
            >
                {({
                    direction,
                    filteredItems,
                    onItemSelectAll,
                    onItemSelect,
                    selectedKeys: listSelectedKeys,
                    disabled: listDisabled,
                }) => {

                    const columns = direction === 'left' ? leftColumns : rightColumns;

                    const rowSelection: TableRowSelection<TransferItem> = {
                        getCheckboxProps: (item) => ({ disabled: listDisabled || item.disabled }),
                        onSelectAll(selected, selectedRows) {
                            const treeSelectedKeys = selectedRows.map((a) => a[`${keyName}`]);
                            const diffKeys = selected
                                ? difference(treeSelectedKeys, listSelectedKeys)
                                : difference(listSelectedKeys, treeSelectedKeys);
                            onItemSelectAll(diffKeys as string[], selected);
                        },
                        onSelect(item, selected) {
                            onItemSelect(item[`${keyName}`], selected);
                        },
                        selectedRowKeys: listSelectedKeys,
                    };

                    return  (
                        <KCIMTable
                            rowSelection={rowSelection}
                            columns={columns as TransferItem[]}
                            dataSource={settingType == 2?filteredItems:direction == 'left'?buildTree(filteredItems):filteredItems}
                            size="small"
                            bordered={false}
                            rowKey={keyName}
                            scroll={{ y: 280 }}
                            pagination={{ showTitle: false, pageSize: 9, showLessItems: false, simple: true, showTotal: () => false }}
                            tableAlertRender={false}
                            style={{ pointerEvents: listDisabled ? 'none' : undefined }}
                            onRow={(row) => ({
                                onClick: () => {
                                    if (row.itemDisabled || listDisabled) return;
                                    onItemSelect(row[`${keyName}`], !listSelectedKeys.includes(row[`${keyName}`]));
                                },
                            })}
                        />
                    )
                }}
            </Transfer>
        </div>

    )
});

export default TableTransfer