Calculation/app/service/material_bills.js

'use strict';

/**
 * 期计量 数据模型
 *
 * @author Mai
 * @date 2018/8/13
 * @version
 */

const auditConst = require('../const/audit').material;
const materialConst = require('../const/material');
const MaterialCalculator = require('../lib/material_calc');

module.exports = app => {
    class MaterialBills extends app.BaseService {
        /**
         * 构造函数
         *
         * @param {Object} ctx - egg全局变量
         * @return {void}
         */
        constructor(ctx) {
            super(ctx);
            this.tableName = 'material_bills';
        }

        /**
         * 添加工料
         * @return {void}
         */
        async add() {
            if (!this.ctx.tender || !this.ctx.material) {
                throw '数据错误';
            }
            const newBills = {
                tid: this.ctx.tender.id,
                mid: this.ctx.material.id,
                in_time: new Date(),
            };

            // 新增工料
            const result = await this.db.insert(this.tableName, newBills);
            if (result.affectedRows !== 1) {
                throw '新增工料数据失败';
            }
            return await this.getDataById(result.insertId);
        }

        /**
         * 删除工料
         * @param {int} id 工料id
         * @return {void}
         */
        async del(id) {
            if (!this.ctx.tender || !this.ctx.material) {
                throw '数据错误';
            }
            // 判断t_type是否为费用，且存在quantity，m_spread值
            const transaction = await this.db.beginTransaction();
            try {
                const mbInfo = await this.getDataById(id);
                await transaction.delete(this.tableName, { id });
                let m_tp = this.ctx.material.m_tp;
                if (mbInfo.t_type === materialConst.t_type[1].value && mbInfo.quantity !== null && mbInfo.m_spread !== null) {
                    // 金额发生变化，则重新计算本期金额
                    m_tp = await this.calcMaterialMTp(transaction);
                }
                await transaction.commit();
                return m_tp;
            } catch (err) {
                await transaction.rollback();
                throw err;
            }
        }

        /**
         * 修改工料信息
         * @param {Object} data 工料内容
         * @return {void}
         */
        async save(data) {
            if (!this.ctx.tender || !this.ctx.material) {
                throw '数据错误';
            }
            delete data.in_time;
            delete data.m_tp;
            // 判断是否可修改
            // 判断t_type是否为费用
            const transaction = await this.db.beginTransaction();
            try {
                await transaction.update(this.tableName, data);
                const m_tp = await this.calcMaterialMTp(transaction);
                await transaction.commit();
                return m_tp;
            } catch (err) {
                await transaction.rollback();
                throw err;
            }
        }

        /**
         * 更新新一期的quantity和截止上期金额并返回本期总金额
         * @param transaction
         * @param tid
         * @param mid
         * @returns {Promise<number>}
         */
        async updateNewMaterial(transaction, tid, mid, ctx, stage_id) {
            const materialBillsData = await this.getAllDataByCondition({ where: { tid } });
            let m_tp = 0;
            const materialCalculator = new MaterialCalculator(ctx, stage_id, ctx.tender.info);
            for (const mb of materialBillsData) {
                const one_tp = await this.calcQuantityByMB(transaction, mid, mb, materialCalculator);
                m_tp = this.ctx.helper.add(m_tp, one_tp);
            }
            return m_tp;
        }

        /**
         * 修改quantity，m_spread值和返回单条调差金额（新增一期）
         * @param transaction
         * @param mid
         * @param mb
         * @returns {Promise<*>}
         */
        async calcQuantityByMB(transaction, mid, mb, materialCalculator) {
            if (mb.t_type === materialConst.t_type[0].value) {
                const sql = 'SELECT SUM(`gather_qty`*`quantity`) as quantity FROM ' + this.ctx.service.materialList.tableName + ' WHERE `mid`=? AND `mb_id`=? AND `is_join`=1';
                const sqlParam = [mid, mb.id];
                const mb_quantity = await transaction.queryOne(sql, sqlParam);
                console.log(mb_quantity);
                // 取历史期记录获取截止上期调差金额
                const updateData = {
                    id: mb.id,
                    quantity: this.ctx.helper.round(mb_quantity.quantity, 3),
                    pre_tp: mb.quantity && mb.m_spread !== null ? this.ctx.helper.round(this.ctx.helper.add(mb.pre_tp, this.ctx.helper.mul(mb.quantity, mb.m_spread)), 2) : mb.pre_tp,
                };
                await transaction.update(this.tableName, updateData);
                return await this.ctx.helper.round(this.ctx.helper.mul(mb_quantity.quantity, mb.m_spread), 2);
            } else if (mb.t_type === materialConst.t_type[1].value) {
                const quantity = await materialCalculator.calculateExpr(mb.expr);
                const updateData = {
                    id: mb.id,
                    quantity: quantity !== 0 && quantity !== null ? this.ctx.helper.round(quantity, 3) : null,
                    pre_tp: mb.quantity && mb.m_spread !== null ? this.ctx.helper.round(this.ctx.helper.add(mb.pre_tp, this.ctx.helper.mul(mb.quantity, mb.m_spread)), 2) : mb.pre_tp,
                };
                await transaction.update(this.tableName, updateData);
                return await this.ctx.helper.round(this.ctx.helper.mul(quantity, mb.m_spread), 2);
            }
        }

        /**
         * 修改 expr和quantity值，返回本期金额和单条数据
         * @param data
         * @returns {Promise<void>}
         */
        async updateFYQuantity(data) {
            if (!this.ctx.tender || !this.ctx.material) {
                throw '数据错误';
            }
            const transaction = await this.db.beginTransaction();
            try {
                const mbInfo = await this.getDataById(data.id);
                await transaction.update(this.tableName, data);
                let m_tp = this.ctx.material.m_tp;
                if (mbInfo.quantity !== data.quantity) {
                    m_tp = await this.calcMaterialMTp(transaction);
                }
                await transaction.commit();
                const returnData = {
                    m_tp,
                    info: await this.getDataById(data.id),
                }
                return returnData;
            } catch (err) {
                await transaction.rollback();
                throw err;
            }
        }

        // 更改计算总金额并返回值
        async calcMaterialMTp(transaction) {
            // 金额发生变化，则重新计算本期金额
            const sql = 'SELECT SUM(`m_spread`*`quantity`) as total_price FROM ' + this.tableName + ' WHERE `tid` = ?';
            const sqlParam = [this.ctx.tender.id];
            const tp = await transaction.queryOne(sql, sqlParam);
            console.log(tp);
            const updateData2 = {
                id: this.ctx.material.id,
                m_tp: tp.total_price,
            };
            await transaction.update(this.ctx.service.material.tableName, updateData2);
            return tp.total_price;
        }
    }

    return MaterialBills;
};