'use strict';

/**
 * 提供基础操作:
 * 1. 增删改查
 * 2. 粘贴整块
 * 3. 简易导入
 *
 * @author Mai
 * @date
 * @version
 */

const Service = require('./base_service');
// sql拼装器
const SqlBuilder = require('../lib/sql_builder');

class TreeService extends Service {
    /**
     * 构造函数
     *
     * @param {Object} ctx - egg全局context
     * @param {Object} setting - 树结构设置
     * e.g.: {
     *     mid: 'tender_id', 分块id（例如tender_id, rid, list_id）
     *     kid: 'ledger_id', 分块内的树结构id
     *     pid: 'ledger_pid', 父节点id
     *     order: 'order',
     *     level: 'level',
     *     fullPath: 'full_path',
     *     isLeaf: 'is_leaf',
     *     keyPre: 'revise_bills_maxLid:'
     * }
     * @return {void}
     */
    constructor(ctx, setting) {
        super(ctx);
        this.tableName = setting.tableName;
        this.setting = setting;
        // 以下字段仅可通过树结构操作改变，不可直接通过update方式从接口提交，发现时过滤
        this.readOnlyFields = ['id'];
        this.readOnlyFields.push(this.setting.mid);
        this.readOnlyFields.push(this.setting.kid);
        this.readOnlyFields.push(this.setting.pid);
        this.readOnlyFields.push(this.setting.order);
        this.readOnlyFields.push(this.setting.level);
        this.readOnlyFields.push(this.setting.fullPath);
        this.readOnlyFields.push(this.setting.isLeaf);
    }

    getCondition (condition) {
        const result = {};
        if (condition.mid) result[this.setting.mid] = condition.mid;
        if (condition.kid) result[this.setting.kid] = condition.kid;
        if (condition.pid) result[this.setting.pid] = condition.pid;
        if (condition[this.setting.order]) result[this.setting.order] = condition[this.setting.order];
        if (condition.level) result[this.setting.level] = condition.level;
        if (condition.fullPath) result[this.setting.fullPath] = condition.fullPath;
        if (condition.isLeaf) result[this.setting.isLeaf] = condition.isLeaf;
        return result;
    }

    /**
     * 获取 修订 清单数据
     * @param {Number} mid - masterId
     * @returns {Promise<void>}
     */
    async getData(mid) {
        return await this.db.select(this.tableName, {
            where: this.getCondition({mid: mid})
        });
    }

    /**
     * 获取节点数据
     * @param {Number} mid - masterId
     * @param {Number} id
     * @returns {Promise<void>}
     */
    async getDataByLid (mid, kid) {
        return await this.db.get(this.tableName, this.getCondition({
            mid: mid, kid: kid,
        }));
    }

    /**
     * 获取节点数据
     * @param id
     * @returns {Promise<Array>}
     */
    async getDataById(id) {
        if (id instanceof Array) {
            return await this.db.select(this.tableName, { where: {id: id} });
        } else {
            return await this.db.get(this.tableName, { id: id });
        }
    }

    /**
     * 获取最末的子节点
     * @param {Number} mid - masterId
     * @param {Number} pid - 父节点id
     * @return {Object}
     */
    async getLastChildData(mid, pid) {
        this.initSqlBuilder();
        this.sqlBuilder.setAndWhere(this.setting.mid, {
            value: mid,
            operate: '=',
        });
        this.sqlBuilder.setAndWhere(this.setting.pid, {
            value: pid,
            operate: '=',
        });
        this.sqlBuilder.orderBy = [['order', 'DESC']];
        const [sql, sqlParam] = this.sqlBuilder.build(this.tableName);
        const resultData = await this.db.queryOne(sql, sqlParam);

        return resultData;
    }

    /**
     * 根据 父节点id 和 节点排序order 获取数据
     *
     * @param {Number} mid - master id
     * @param {Number} pid - 父节点id
     * @param {Number|Array} order - 排序
     * @return {Object|Array} - 查询结果
     */
    async getDataByParentAndOrder(mid, pid, order) {
        const result = await this.db.select(this.tableName, {
            where: this.getCondition({mid: mid, pid: pid, order: order})
        });
        return order instanceof Array ? result : (result.length > 0 ? result[0] : null);
    }

    /**
     * 根据 父节点ID 和 节点排序order 获取全部后节点数据
     * @param {Number} mid - master id
     * @param {Number} pid - 父节点id
     * @param {Number} order - 排序
     * @return {Array}
     */
    async getNextsData(mid, pid, order) {
        this.initSqlBuilder();
        this.sqlBuilder.setAndWhere(this.setting.mid, {
            value: mid,
            operate: '=',
        });
        this.sqlBuilder.setAndWhere(this.setting.pid, {
            value: pid,
            operate: '=',
        });
        this.sqlBuilder.setAndWhere(this.setting.order, {
            value: order,
            operate: '>',
        });

        const [sql, sqlParam] = this.sqlBuilder.build(this.tableName);
        const data = await this.db.query(sql, sqlParam);

        return data;
    }

    /**
     * 获取最大节点id
     *
     * @param {Number} mid - master id
     * @return {Number}
     * @private
     */
    async _getMaxLid(mid) {
        const cacheKey = this.setting.keyPre + mid;
        let maxId = parseInt(await this.cache.get(cacheKey));
        if (!maxId) {
            const sql = 'SELECT Max(??) As max_id FROM ?? Where ' + this.setting.mid + ' = ?';
            const sqlParam = ['ledger_id', this.tableName, mid];
            const queryResult = await this.db.queryOne(sql, sqlParam);
            maxId = queryResult.max_id || 0;
            this.cache.set(cacheKey, maxId, 'EX', this.ctx.app.config.cacheTime);
        }
        return maxId;
    }

    /**
     * 缓存最大节点id
     *
     * @param {Number} mid - master id
     * @param {Number} maxId - 当前最大节点id
     * @returns {Promise<void>}
     * @private
     */
    _cacheMaxLid(mid, maxId) {
        this.cache.set(this.setting.keyPre + mid , maxId, 'EX', this.ctx.app.config.cacheTime);
    }

    /**
     * 更新order
     * @param {Number} mid - master id
     * @param {Number} pid - 父节点id
     * @param {Number} order - 开始更新的order
     * @param {Number} incre - 更新的增量
     * @returns {Promise<*>}
     * @private
     */
    async _updateChildrenOrder(mid, pid, order, incre = 1) {
        this.initSqlBuilder();
        this.sqlBuilder.setAndWhere(this.setting.mid, {
            value: mid,
            operate: '=',
        });
        this.sqlBuilder.setAndWhere(this.setting.order, {
            value: order,
            operate: '>=',
        });
        this.sqlBuilder.setAndWhere(this.setting.pid, {
            value: pid,
            operate: '=',
        });
        this.sqlBuilder.setUpdateData(this.setting.order, {
            value: Math.abs(incre),
            selfOperate: incre > 0 ? '+' : '-',
        });
        const [sql, sqlParam] = this.sqlBuilder.build(this.tableName, 'update');
        const data = await this.transaction.query(sql, sqlParam);

        return data;
    }

    /**
     * 新增数据(新增为selectData的后项，该方法不可单独使用)
     *
     * @param {Number} mid - master-id
     * @param {Object} select - 选中节点的数据
     * @param {Object} data - 新增节点的初始数据
     * @return {Object} - 新增结果
     * @private
     */
    async _addNodeData(mid, select, data) {
        if (!data) {
            data = {};
        }
        const maxId = await this._getMaxLid(mid);

        data.id = this.uuid.v4();
        data[this.setting.kid] = maxId + 1;
        data[this.setting.pid] = select[this.setting.pid];
        data[this.setting.mid] = mid;
        data[this.setting.level] = select[this.setting.level];
        data[this.setting.order] = select[this.setting.order] + 1;
        data[this.setting.fullPath] = select[this.setting.fullPath].replace('.' + select[this.setting.kid], '.' + data[this.setting.kid]);
        data[this.setting.isLeaf] = true;
        const result = await this.transaction.insert(this.tableName, data);

        this._cacheMaxLid(mid, maxId + 1);

        return result;
    }

    /**
     * 新增节点
     * @param {Number} mid - master id
     * @param {Number} kid - 清单节点id
     * @returns {Promise<void>}
     */
    async addNode(mid, kid, data) {
        if (!mid || !kid) return null;
        const select = await this.getDataByLid(mid, kid);
        if (!select) {
            throw '新增节点数据错误';
        }

        this.transaction = await this.db.beginTransaction();
        try {
            await this._updateChildrenOrder(mid, select[this.setting.pid], select[this.setting.order]+1);
            const newNode = await this._addNodeData(mid, select, data);
            if (newNode.affectedRows !== 1) {
                throw '新增节点数据额错误';
            }
            await this.transaction.commit();
            this.transaction = null;
        } catch (err) {
            await this.transaction.rollback();
            this.transaction = null;
            throw err;
        }

        const createData = await this.getDataByParentAndOrder(mid, select[this.setting.pid], [select[this.setting.order] + 1]);
        const updateData = await this.getNextsData(mid, select[this.setting.pid], select[this.setting.order] + 1);
        return {create: createData, update: updateData};
    }

    /**
     * 删除节点
     * @param {Number} mid - master id
     * @param {Object} deleteNode - 删除节点数据
     * @return {Promise<*>}
     * @private
     */
    async _deleteNodeData(mid, deleteNode) {
        this.initSqlBuilder();
        this.sqlBuilder.setAndWhere(this.setting.mid, {
            value: mid,
            operate: '=',
        });
        this.sqlBuilder.setAndWhere(this.setting.fullPath, {
            value: this.db.escape(deleteNode[this.setting.fullPath] + '%'),
            operate: 'Like',
        });
        const [sql, sqlParam] = this.sqlBuilder.build(this.tableName, 'delete');
        const result = await this.transaction.query(sql, sqlParam);

        return result;
    }

    /**
     *  删除选中节点及其子节点
     *
     * @param {Number} mid - master id
     * @param {Number} kid - 选中节点id
     * @return {Array} - 被删除的数据
     */
    async deleteNode(mid, kid) {
        if ((mid <= 0) || (kid <= 0)) return [];
        const select = await this.getDataByNodeId(mid, kid);
        if (!select) throw '删除节点数据错误';
        const parent = await this.getDataByNodeId(mid, select[this.setting.pid]);
        // 获取将要被删除的数据
        const deleteData = await this.getDataByFullPath(mid, select[this.setting.fullPath] + '%');
        if (deleteData.length === 0) throw '删除节点数据错误';

        this.transaction = await this.db.beginTransaction();
        try {
            // 删除
            const operate = await this._deleteNodeData(mid, select);
            // 选中节点--父节点 只有一个子节点时，应升级is_leaf
            if (parent) {
                const count = await this.db.count(this.tableName, this.getCondition({mid: mid, pid: select[this.setting.pid]}));
                if (count === 1) {
                    const updateParent = {id: parent.id };
                    updateParent[this.setting.isLeaf] = true;
                    await this.transaction.update(this.tableName, updateParent);
                }
            }
            // 选中节点--全部后节点 order--
            await this._updateSelectNextsOrder(select, -1);
            // 删除部位明细
            //await this.ctx.service.pos.deletePosData(this.transaction, tenderId, this._.map(deleteData, 'id'));
            await this.transaction.commit();
        } catch (err) {
            await this.transaction.rollback();
            throw err;
        }
        // 查询结果
        const updateData = await this.getNextsData(mid, select[this.setting.pid], select[this.setting.order] - 1);
        if (parent) {
            const updateData1 = await this.getDataByNodeId(mid, select[this.setting.pid]);
            if (updateData1[this.setting.isLeaf]) {
                updateData.push(updateData1);
            }
        }
        return { delete: deleteData, update: updateData };
    }

    /**
     * 上移节点
     *
     * @param {Number} mid - master id
     * @param {Number} kid - 选中节点id
     * @return {Array} - 发生改变的数据
     */
    async upMoveNode(mid, kid) {
        if (!mid || !kid) return null;
        const select = await this.getDataByLid(mid, kid);
        if (!select) {
            throw '上移节点数据错误';
        }
        const pre = await this.getDataByParentAndOrder(mid, select[this.setting.pid], select[this.setting.order] - 1);
        if (!pre) {
            throw '节点不可上移';
        }

        this.transaction = await this.db.beginTransaction();
        try {
            const sData = await this.transaction.update(this.tableName, { id: select.id, order: select[this.setting.order] - 1 });
            const pData = await this.transaction.update(this.tableName, { id: pre.id, order: pre[this.setting.order] + 1 });
            await this.transaction.commit();
        } catch (err) {
            await this.transaction.rollback();
            throw err;
        }

        const resultData = await this.getDataByParentAndOrder(mid, select[this.setting.pid], [select[this.setting.order], pre[this.setting.order]]);
        return { update: resultData };
    }

    /**
     * 下移节点
     *
     * @param {Number} mid - master id
     * @param {Number} kid - 选中节点id
     * @return {Array} - 发生改变的数据
     */
    async downMoveNode(mid, kid) {
        if (!mid || !kid) return null;
        const select = await this.getDataByLid(mid, kid);
        if (!select) {
            throw '下移节点数据错误';
        }
        const next = await this.getDataByParentAndOrder(mid, select[this.setting.pid], select[this.setting.order] + 1);
        if (!next) {
            throw '节点不可下移';
        }

        this.transaction = await this.db.beginTransaction();
        try {
            const sData = await this.transaction.update(this.tableName, { id: select.id, order: select[this.setting.order] + 1 });
            const pData = await this.transaction.update(this.tableName, { id: next.id, order: next[this.setting.order] - 1 });
            await this.transaction.commit();
        } catch (err) {
            await this.transaction.rollback();
            throw err;
        }

        const resultData = await this.getDataByParentAndOrder(mid, select[this.setting.pid], [select[this.setting.order], next[this.setting.order]]);
        return { update: resultData };
    }

    /**
     * 升级selectData, 同步修改所有子节点
     * @param {Object} selectData - 升级操作，选中节点
     * @return {Object}
     * @private
     */
    async _syncUplevelChildren(select) {
        this.initSqlBuilder();
        this.sqlBuilder.setAndWhere(this.setting.mid, {
            value: selectData.tender_id,
            operate: '=',
        });
        this.sqlBuilder.setAndWhere(this.setting.fullPath, {
            value: this.db.escape(select[this.setting.fullPath] + '.%'),
            operate: 'like',
        });
        this.sqlBuilder.setUpdateData(this.setting.level, {
            value: 1,
            selfOperate: '-',
        });
        this.sqlBuilder.setUpdateData(this.setting.fullPath, {
            value: [this.setting.fullPath, this.db.escape(select[this.setting.pid] + '.'), this.db.escape('')],
            literal: 'Replace',
        });
        const [sql, sqlParam] = this.sqlBuilder.build(this.tableName, 'update');
        const data = await this.transaction.query(sql, sqlParam);

        return data;
    }

    /**
     * 选中节点的后兄弟节点，全部变为当前节点的子节点
     * @param {Object} selectData - 选中节点
     * @return {Object}
     * @private
     */
    async _syncUpLevelNexts(select) {
        // 查询selectData的lastChild
        const lastChild = await this.getLastChildData(select[this.setting.mid], select[this.setting.kid]);
        const nexts = await this.getNextsData(select[this.setting.mid], select[this.setting.pid], select[this.setting.order]);
        if (nexts && nexts.length > 0) {
            // 修改nextsData pid, 排序
            this.initSqlBuilder();
            this.sqlBuilder.setUpdateData(this.setting.pid, {
                value: select[this.setting.kid],
            });
            const orderInc = lastChild ? lastChild[this.setting.order] - select[this.setting.order] : - select[this.setting.order];
            this.sqlBuilder.setUpdateData(this.setting.order, {
                value: Math.abs(orderInc),
                selfOperate: orderInc > 0 ? '+' : '-',
            });
            this.sqlBuilder.setAndWhere(this.setting.mid, {
                value: select[this.setting.mid],
                operate: '=',
            });
            this.sqlBuilder.setAndWhere(this.setting.pid, {
                value: select[this.setting.pid],
                operate: '=',
            });
            this.sqlBuilder.setAndWhere(this.setting.order, {
                value: select[this.setting.order],
                operate: '>',
            });
            const [sql1, sqlParam1] = this.sqlBuilder.build(this.tableName, 'update');
            await this.transaction.query(sql1, sqlParam1);

            // 选中节点 is_leaf应为false
            if (select.is_leaf) {
                const updateData = { id: select.id, is_leaf: false };
                await this.transaction.update(this.tableName, updateData);
            }

            // 修改nextsData及其子节点的full_path
            const oldSubStr = this.db.escape(select[this.setting.pid] + '.');
            const newSubStr = this.db.escape(select[this.setting.kid] + '.');
            const sqlArr = [];
            sqlArr.push('Update ?? SET `full_path` = Replace(`full_path`,' + oldSubStr + ',' + newSubStr + ') Where');
            sqlArr.push('(`' + this.setting.mid + '` = ' + select[this.setting.mid] + ')');
            sqlArr.push(' And (');
            for (const data of nexts) {
                sqlArr.push('`' + this.setting.fullPath + '` Like ' + this.db.escape(data[this.setting.fullPath] + '%'));
                if (nexts.indexOf(data) < nexts.length - 1) {
                    sqlArr.push(' Or ');
                }
            }
            sqlArr.push(')');
            const sql = sqlArr.join('');
            const resultData = await this.transaction.query(sql, [this.tableName]);
            return resultData;
        }
    }

    /**
     * 升级节点
     *
     * @param {Number} mid - master id
     * @param {Number} kid - 选中节点id
     * @return {Array} - 发生改变的数据
     */
    async upLevelNode(mid, kid) {
        if ((mid <= 0) || (kid <= 0)) return [];

        const select = await this.getDataByNodeId(mid, kid);
        if (!select) throw '升级节点数据错误';
        const parent = await this.getDataByNodeId(mid, select[this.setting.pid]);
        if (!parent) throw '升级节点数据错误';

        this.transaction = await this.db.beginTransaction();
        const newFullPath = select[this.setting.fullPath].replace(select[this.setting.pid] + '.', '');
        try {
            // 选中节点--父节点 选中节点为firstChild时，修改is_leaf
            if (select[this.setting.order] === 1) {
                await this.transaction.update(this.tableName, {
                    id: parent.id,
                    is_leaf: true,
                });
            }
            // 选中节点--父节点--全部后兄弟节点 order+1
            await this._updateSelectNextsOrder(parent);
            // 选中节点 修改pid, order, full_path, level, is_leaf, 清空计算项
            const updateData = { id: select.id };
            updateData[this.setting.pid] = parent[this.setting.pid];
            updateData[this.setting.order] = parent[this.setting.order] + 1;
            updateData[this.setting.level] = select[this.setting.level] + 1;
            updateData[this.setting.fullPath] = newFullPath;

            const nexts = await this.getNextsData(mid, parent[this.setting.kid], select[this.setting.order]);
            if (nexts.length > 0) {
                updateData.is_leaf = true;
                // updateData.unit_price = null;
                // updateData.quantity = null;
                // updateData.total_price = null;
                // updateData.deal_qty = null;
                // updateData.deal_tp = null;
            }
            await this.transaction.update(this.tableName, updateData);
            // 选中节点--全部子节点（含孙） level-1, full_path变更
            await this._syncUplevelChildren(select);
            // 选中节点--全部后兄弟节点 收编为子节点 修改pid, order, full_path
            await this._syncUpLevelNexts(select);
            await this.transaction.commit();
        } catch (err) {
            await this.transaction.rollback();
            throw err;
        }

        // 查询修改的数据
        const resultData1 = await this.getDataByFullPath(mid, newFullPath + '%');
        const resultData2 = await this.getNextsData(mid, parent[this.setting.pid], parent[this.setting.order] + 1);
        return { update: resultData1.concat(resultData2) };
    }

    /**
     * 降级selectData, 同步修改所有子节点
     * @param {Object} selectData - 选中节点
     * @param {Object} preData - 选中节点的前一节点（降级后为父节点）
     * @return {Promise<*>}
     * @private
     */
    async _syncDownlevelChildren(select, pre) {
        this.initSqlBuilder();
        this.sqlBuilder.setAndWhere(this.setting.mid, {
            value: select[this.setting.mid],
            operate: '=',
        });
        this.sqlBuilder.setAndWhere(this.setting.fullPath, {
            value: this.db.escape(select[this.setting.fullPath] + '.%'),
            operate: 'like',
        });
        this.sqlBuilder.setUpdateData(this.setting.level, {
            value: 1,
            selfOperate: '+',
        });
        this.sqlBuilder.setUpdateData(this.setting.fullPath, {
            value: [this.setting.fullPath, this.db.escape('.' + select[this.setting.kid]), this.db.escape('.' + pre[this.setting.kid] + '.' + select[this.setting.kid])],
            literal: 'Replace',
        });
        const [sql, sqlParam] = this.sqlBuilder.build(this.tableName, 'update');
        const data = await this.transaction.query(sql, sqlParam);

        return data;
    }

    /**
     * 降级节点
     *
     * @param {Number} mid - master id
     * @param {Number} kid - 选中节点id
     * @return {Array} - 发生改变的数据
     */
    async downLevelNode(mid, kid) {
        if ((mid <= 0) || (kid <= 0)) return [];
        const select = await this.getDataByNodeId(mid, kid);
        if (!select) throw '降级节点数据错误';
        const pre = await this.getDataByParentAndOrder(mid, select[this.setting.pid], select[this.setting.order] - 1);
        if (!pre) throw '节点不可降级';
        const preLastChild = await this.getLastChildData(mid, pre[this.setting.kid]);

        this.transaction = await this.db.beginTransaction();
        const orgLastPath = select[this.setting.level] === 1 ? select[this.setting.kid] : '.' + select[this.setting.kid];
        const newLastPath = select[this.setting.level] === 1 ? pre[this.setting.kid] + '.' + select[this.setting.kid] : '.' + pre[this.setting.kid] + '.' + select[this.setting.kid];
        const newFullPath = select.full_path.replace(orgLastPath, newLastPath);
        try {
            // 选中节点--全部后节点 order--
            await this._updateSelectNextsOrder(select, -1);
            // 选中节点 修改pid, level, order, full_path
            const updateData = { id: select.id };
            updateData[this.setting.kid] = pre[this.setting.kid];
            updateData[this.setting.order] = preLastChild ? preLastChild[this.setting.order] + 1 : 1;
            updateData[this.setting.level] = select[this.setting.level] + 1;
            updateData[this.setting.fullPath] = newFullPath;
            await this.transaction.update(this.tableName, updateData);
            // 选中节点--全部子节点（含孙） level++, full_path
            await this._syncDownlevelChildren(select, pre);
            // 选中节点--前兄弟节点 is_leaf应为false, 清空计算相关字段
            const updateData2 = { id: pre.id };
            updateData2[this.setting.isLeaf] = false;
            // updateData2.unit_price = null;
            // updateData2.quantity = null;
            // updateData2.total_price = null;
            // updateData2.deal_qty = null;
            // updateData2.deal_tp = null;
            await this.transaction.update(this.tableName, updateData2);
            await this.transaction.commit();
        } catch (err) {
            await this.transaction.rollback();
            throw err;
        }

        // 查询修改的数据
        // 选中节点及子节点
        const resultData1 = await this.getDataByFullPath(mid, newFullPath + '%');
        // 选中节点--原前兄弟节点&全部后兄弟节点
        const resultData2 = await this.getNextsData(mid, pre[this.setting.pid], pre[this.setting.order]);
        return { update: resultData1.concat(resultData2) };
    }

    /**
     * 过滤data中update方式不可提交的字段
     * @param {Number} id - 主键key
     * @param {Object} data
     * @return {Object<{id: *}>}
     * @private
     */
    _filterUpdateInvalidField(id, data) {
        const result = {id: id};
        for (const prop in data) {
            if (this.readOnlyFields.indexOf(prop) === -1) {
                result[prop] = data[prop];
            }
        }
        return result;
    }

    /**
     * 提交多条数据 - 不影响计算等未提交项
     * @param {Number} mid - master id
     * @param {Array} datas - 提交数据
     * @return {Array} - 提交后的数据
     */
    async updateInfos(mid, datas) {
        if (mid <= 0) throw '数据错误';
        for (const data of datas) {
            if (mid !== data[this.setting.mid]) throw '提交数据错误';
        }

        this.transaction = await this.db.beginTransaction();
        try {
            for (const data of datas) {
                const updateNode = await this.getDataById(data.id);
                if (!updateNode || mid !== updateNode[this.setting.mid] || data.kid !== updateNode[this.setting.kid]) {
                    throw '提交数据错误';
                }
                const updateData = this._filterUpdateInvalidField(updateNode.id, data);
                await this.transaction.update(this.tableName, updateData);
            }
            await this.transaction.commit();
        } catch (err) {
            await this.transaction.rollback();
            throw err;
        }

        const resultData = await this.getDataById(this._.map(datas, 'id'));
        return resultData;
    }
}

module.exports = TreeService;