import { MyBetaModalFormProps, MyButtons } from '@/common';
import { MyModal } from '@/components/MyModal';
import { Apis } from '@/gen/Apis';
import { ProCard } from '@ant-design/pro-components';
import {
  Alert,
  Button,
  Checkbox,
  message,
  Space,
  Tree,
  Typography,
} from 'antd';
import { CheckboxChangeEvent } from 'antd/es/checkbox';
import type { DataNode } from 'antd/es/tree';
import { useEffect, useRef, useState } from 'react';

const { Title } = Typography;

interface TreeNodeType extends DataNode {
  id: number;
  key: string;
  title: string;
  isLeaf?: boolean;
  children?: TreeNodeType[];
  asset_buildings_id?: number;
  asset_units_id?: number;
}

// 扩展 MyBetaModalFormProps 接口，添加 onCancel 属性
interface ChargeStandardHasHouseProps extends MyBetaModalFormProps {
  onCancel?: () => void;
}

export default function ChargeStandardHasHouse(
  props: ChargeStandardHasHouseProps,
) {
  const [treeData, setTreeData] = useState<TreeNodeType[]>([]);
  const [expandedKeys, setExpandedKeys] = useState<React.Key[]>([]);
  const [checkedKeys, setCheckedKeys] = useState<React.Key[]>([]);
  const [selectedKeys, setSelectedKeys] = useState<React.Key[]>([]);
  const [autoExpandParent, setAutoExpandParent] = useState<boolean>(true);
  const [loading, setLoading] = useState<boolean>(false);
  const [selectAll, setSelectAll] = useState<boolean>(false);
  const [selectedHouses, setSelectedHouses] = useState<
    { id: number; name: string }[]
  >([]);
  const modalRef: any = useRef(null);

  // 加载楼栋数据
  const loadBuildings = async () => {
    setLoading(true);

    try {
      const res = await Apis.Asset.AssetBuildings.List({
        asset_projects_id: props?.item?.asset_projects_id,
      });
      if (res?.data) {
        const buildings = res.data.map((building: any) => ({
          id: building.id,
          key: `building-${building.id}`,
          title: building.name,
          children: [],
          isLeaf: false,
        }));
        setTreeData(buildings);
      }
    } catch (error) {
      console.error('加载楼栋失败:', error);
    } finally {
      setLoading(false);
    }
  };

  // 加载单元数据
  const loadUnits = async (buildingId: number, buildingKey: string) => {
    setLoading(true);
    try {
      const res = await Apis.Asset.AssetUnits.List({
        asset_projects_id: props?.item?.asset_projects_id,
        asset_buildings_id: buildingId,
      });

      if (res?.data) {
        const units = res.data.map((unit: any) => ({
          id: unit.id,
          key: `unit-${unit.id}`,
          title: unit.name,
          children: [],
          isLeaf: false,
          asset_buildings_id: buildingId,
        }));

        // 更新树形数据
        const newTreeData = [...treeData];
        const buildingNode = newTreeData.find(
          (node) => node.key === buildingKey,
        );
        if (buildingNode) {
          buildingNode.children = units;
        }

        setTreeData(newTreeData);
      }
    } catch (error) {
      console.error('加载单元失败:', error);
    } finally {
      setLoading(false);
    }
  };

  // 加载房屋数据
  const loadHouses = async (
    buildingId: number,
    unitId: number,
    unitKey: string,
  ) => {
    setLoading(true);
    try {
      const res = await Apis.Asset.AssetHouses.List({
        asset_projects_id: props?.item?.asset_projects_id,
        asset_buildings_id: buildingId,
        asset_units_id: unitId,
      });

      if (res?.data) {
        const houses = res.data.map((house: any) => ({
          id: house.id,
          key: `house-${house.id}`,
          title: `${house.name} (${house.floor}层)`,
          isLeaf: true,
          asset_buildings_id: buildingId,
          asset_units_id: unitId,
        }));

        // 更新树形数据
        const newTreeData = [...treeData];
        const buildingNode = newTreeData.find(
          (node) =>
            node.asset_buildings_id === undefined && node.id === buildingId,
        );

        if (buildingNode && buildingNode.children) {
          const unitNode = buildingNode.children.find(
            (node) => node.key === unitKey,
          );
          if (unitNode) {
            unitNode.children = houses;
          }
        }

        setTreeData(newTreeData);
      }
    } catch (error) {
      console.error('加载房屋失败:', error);
    } finally {
      setLoading(false);
    }
  };

  // 初始化加载数据
  useEffect(() => {
    if (props?.item?.asset_projects_id) {
      loadBuildings();
    } else {
      console.warn('缺少 asset_projects_id 参数');
    }
  }, [props?.item?.id]);

  // 处理节点展开
  const onExpand = (expandedKeysValue: React.Key[]) => {
    setExpandedKeys(expandedKeysValue);
    setAutoExpandParent(false);
  };

  // 处理节点选中
  const onCheck = (
    checkedKeysValue:
      | React.Key[]
      | { checked: React.Key[]; halfChecked: React.Key[] },
  ) => {
    // 处理不同格式的返回值
    const keys = Array.isArray(checkedKeysValue)
      ? checkedKeysValue
      : checkedKeysValue.checked;

    // 获取之前的选中状态，用于比较变化
    const prevKeys = new Set(checkedKeys);
    const newKeys = new Set(keys);

    // 找出新取消选中的节点
    const uncheckedKeys = [...prevKeys].filter((key) => !newKeys.has(key));

    // 如果有节点被取消选中，同步取消其所有子节点
    if (uncheckedKeys.length > 0) {
      const keysToRemove = new Set<React.Key>();
      const findChildKeys = (nodes: TreeNodeType[], parentKey: React.Key) => {
        nodes.forEach((node) => {
          if (node.key === parentKey) {
            // 将当前节点及其所有子节点的key加入待移除集合
            const collectKeys = (n: TreeNodeType) => {
              keysToRemove.add(n.key);
              if (n.children) {
                n.children.forEach(collectKeys);
              }
            };
            collectKeys(node);
          } else if (node.children) {
            findChildKeys(node.children, parentKey);
          }
        });
      };

      uncheckedKeys.forEach((key) => {
        findChildKeys(treeData, key);
      });

      // 从选中keys中移除所有需要取消的节点
      const finalKeys = keys.filter((key) => !keysToRemove.has(key));
      setCheckedKeys(finalKeys);
    } else {
      setCheckedKeys(keys);
    }

    // 收集所有选中的房屋
    const selectedHousesList: { id: number; name: string }[] = [];

    // 遍历树形数据，收集选中节点下的所有房屋
    const collectHouses = (nodes: TreeNodeType[], checkedKeys: React.Key[]) => {
      nodes.forEach((node) => {
        if (checkedKeys.includes(node.key)) {
          if (node.isLeaf) {
            // 如果是房屋节点，直接添加
            selectedHousesList.push({
              id: node.id,
              name: node.title as string,
            });
          } else {
            // 如果是楼栋或单元节点，递归收集其下的所有房屋
            if (node.children) {
              collectHouses(node.children, checkedKeys);
            }
          }
        }
      });
    };

    collectHouses(treeData, keys);

    setSelectedHouses(selectedHousesList);
    setSelectAll(
      selectedHousesList.length > 0 &&
        selectedHousesList.length ===
          treeData.reduce(
            (total, building) =>
              total +
              (building.children?.reduce(
                (unitTotal, unit) => unitTotal + (unit.children?.length || 0),
                0,
              ) || 0),
            0,
          ),
    );
  };

  // 处理节点选择
  const onSelect = (selectedKeysValue: React.Key[]) => {
    setSelectedKeys(selectedKeysValue);
  };

  // 处理动态加载数据
  const onLoadData = async (node: TreeNodeType) => {
    if (node.isLeaf) {
      return Promise.resolve();
    }

    // 加载楼栋下的单元
    if (node.key.toString().startsWith('building-')) {
      const buildingId = node.id;
      await loadUnits(buildingId, node.key as string);

      // 如果楼栋被选中，加载并选中其下所有单元和房屋
      if (checkedKeys.includes(node.key)) {
        const newTreeData = [...treeData];
        const buildingNode = newTreeData.find((n) => n.key === node.key);
        if (buildingNode?.children) {
          // 加载每个单元下的房屋
          for (const unit of buildingNode.children) {
            await loadHouses(buildingId, unit.id, unit.key as string);
          }
          // 更新树形数据
          setTreeData(newTreeData);
          // 收集所有房屋的key
          const allKeys: React.Key[] = [];
          const collectKeys = (nodes: TreeNodeType[]) => {
            nodes.forEach((node) => {
              allKeys.push(node.key);
              if (node.children) {
                collectKeys(node.children);
              }
            });
          };
          collectKeys([buildingNode]);
          // 更新选中状态
          setCheckedKeys(Array.from(new Set([...checkedKeys, ...allKeys])));
        }
      }
      return Promise.resolve();
    }

    // 加载单元下的房屋
    if (node.key.toString().startsWith('unit-')) {
      const unitId = node.id;
      const buildingId = node.asset_buildings_id as number;
      await loadHouses(buildingId, unitId, node.key as string);

      // 如果单元被选中，选中其下所有房屋
      if (checkedKeys.includes(node.key)) {
        const newTreeData = [...treeData];
        const buildingNode = newTreeData.find((n) =>
          n.children?.some((unit) => unit.key === node.key),
        );
        const unitNode = buildingNode?.children?.find(
          (n) => n.key === node.key,
        );
        if (unitNode?.children) {
          const houseKeys = unitNode.children.map((house) => house.key);
          setCheckedKeys(Array.from(new Set([...checkedKeys, ...houseKeys])));
        }
      }
      return Promise.resolve();
    }

    return Promise.resolve();
  };

  // 处理全选
  const handleSelectAll = (e: CheckboxChangeEvent) => {
    setSelectAll(e.target.checked);

    if (e.target.checked) {
      // 收集所有房屋节点的key
      const allHouseKeys: React.Key[] = [];
      const allHouses: { id: number; name: string }[] = [];

      treeData.forEach((building) => {
        building.children?.forEach((unit) => {
          unit.children?.forEach((house) => {
            if (house.isLeaf) {
              allHouseKeys.push(house.key);
              allHouses.push({
                id: house.id,
                name: house.title as string,
              });
            }
          });
        });
      });

      setCheckedKeys(allHouseKeys);
      setSelectedHouses(allHouses);
    } else {
      // 取消全选
      setCheckedKeys([]);
      setSelectedHouses([]);
    }
  };

  // 提交选中的房屋
  const handleSubmit = async () => {
    if (selectedHouses.length === 0) {
      message.warning('请至少选择一个房屋');
      return;
    }

    try {
      setLoading(true);
      // 将 number[] 转换为 string[]
      const houses_ids = selectedHouses.map((house) => house.id.toString());

      await Apis.HouseCharage.HouseChargeHasHouses.Store({
        house_charge_standards_id: props?.item?.id,
        houses_ids,
      });

      message.success('绑定房屋成功');
      props?.reload?.();
      props?.onCancel?.();
    } catch (error) {
      console.error('绑定房屋失败:', error);
      message.error('绑定房屋失败');
    } finally {
      setLoading(false);
    }
  };

  return (
    <MyModal
      title={props.title || '查看'}
      width="800px"
      myRef={modalRef}
      trigger={
        <MyButtons.Default
          type="primary"
          size="middle"
          title={`${props.title}`}
        />
      }
      node={
        <ProCard
          title={
            <Alert
              message="请选择需要绑定的房屋"
              type="info"
              showIcon
              style={{ margin: 0 }}
            />
          }
        >
          <div style={{ display: 'flex', height: '500px' }}>
            <div
              style={{
                width: '50%',
                borderRight: '1px solid #f0f0f0',
                padding: '0 16px',
              }}
            >
              <div style={{ marginBottom: 16 }}>
                <Checkbox checked={selectAll} onChange={handleSelectAll}>
                  全选
                </Checkbox>
              </div>

              {loading && <div>加载中...</div>}

              <Tree
                checkable
                checkStrictly={false}
                onExpand={onExpand}
                expandedKeys={expandedKeys}
                autoExpandParent={autoExpandParent}
                onCheck={onCheck}
                checkedKeys={checkedKeys}
                onSelect={onSelect}
                selectedKeys={selectedKeys}
                loadData={onLoadData}
                treeData={treeData}
                height={400}
              />
            </div>

            <div style={{ width: '50%', padding: '0 16px' }}>
              <div style={{ marginBottom: 16 }}>
                <Title level={5}>已选房屋 ({selectedHouses.length})</Title>
              </div>

              <div style={{ height: 400, overflow: 'auto' }}>
                {selectedHouses.length > 0 ? (
                  <ul style={{ padding: '0 0 0 20px' }}>
                    {selectedHouses.map((house) => (
                      <li key={house.id}>{house.name}</li>
                    ))}
                  </ul>
                ) : (
                  <div
                    style={{
                      color: '#999',
                      textAlign: 'center',
                      marginTop: 100,
                    }}
                  >
                    暂无选中房屋{' '}
                  </div>
                )}
              </div>
            </div>
          </div>

          <div style={{ marginTop: 16, textAlign: 'right' }}>
            <Space>
              <Button onClick={props?.onCancel}>取消</Button>
              <Button type="primary" loading={loading} onClick={handleSubmit}>
                确认绑定
              </Button>
            </Space>
          </div>
        </ProCard>
      }
    />
  );
}