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- 'use strict';
- /**
- *
- *
- * @author Mai
- * @date
- * @version
- */
- const math = require('mathjs');
- math.config({
- number: 'BigNumber',
- });
- const PayConst = require('../const/deal_pay.js');
- const payType = PayConst.payType;
- const deadlineType = PayConst.deadlineType;
- class PayCalculate {
- constructor (ctx, stage, tenderInfo) {
- this.ctx = ctx;
- this.stage = stage;
- this.percentReg = /((\d+)|((\d+)(\.\d+)))%/g;
- this.tenderInfo = tenderInfo;
- this.decimal = tenderInfo.decimal.pay ? tenderInfo.decimal.payTp : tenderInfo.decimal.tp;
- this.orderReg = /f\d+/ig;
- /* 以下变量在调用calculate方法后获得
- this.add;
- this.pre;
- this.cur;
- this.yf;
- */
- }
- /**
- * 获取 计算基数
- * @returns {Promise<void>}
- */
- async getCalcBase () {
- if (this.bases) { return; }
- const bases = await this.ctx.service.stage.getStagePayCalcBase(this.stage, this.tenderInfo);
- this.bases = bases.sort(function (a, b) {
- return a.sort - b.sort;
- // if (a && b) {
- // return b.code.indexOf(a.code) >= 0 ? 1 : 0;
- // } else {
- // return 0;
- // }
- });
- for (const b of this.bases) {
- b.reg = new RegExp(b.code, 'igm');
- }
- }
- _calculateTpExpr(pay, pays) {
- let formula = pay.expr;
- const orderParam = pay.expr.match(this.orderReg);
- if (orderParam) {
- for (const op of orderParam) {
- const order = parseInt(op.substring(1, op.length));
- const orderPay = pays.find(x => { return x.order === order });
- formula = formula.replace(op, orderPay && orderPay.tp || 0);
- }
- }
- for (const b of this.bases) {
- if ((b.code === 'bqwc' || b.code === 'bqht') && (!pay.pre_used && pay.sprice)) {
- switch (b.code) {
- case 'bqwc':
- formula = formula.replace(b.reg, this.ctx.helper.sub(this.add.gather_tp, pay.sprice));
- break;
- case 'bqht':
- formula = formula.replace(b.reg, this.ctx.helper.sub(this.add.contract_tp, pay.sprice));
- break;
- default: throw '未知参数';
- }
- } else {
- formula = formula.replace(b.reg, b.value);
- }
- }
- const percent = formula.match(this.percentReg);
- if (percent) {
- for (const p of percent) {
- const v = math.eval(p.replace('%', '/100'));
- formula = formula.replace(p, v);
- }
- }
- try {
- // 使用mathjs计算 math.eval('17259401.95*0.9') = 15533461.754999999,正确应为 15533461.755
- // const value = math.eval(formula);
- // 使用逆波兰法四则运算,可防止出现误差,但是只支持四则运算,不支持科学运算
- // const value = this.ctx.helper.calcExprStrRpn(formula);
- // 使用mathjs的大数运算,可支持所有
- const value = parseFloat(math.eval(formula));
- return Number.isFinite(value) ? value : 0;
- } catch(err) {
- return 0;
- }
- }
- _calculateExpr(expr) {
- let formula = expr;
- for (const b of this.bases) {
- formula = formula.replace(b.reg, b.value ? b.value : 0);
- }
- const percent = formula.match(this.percentReg);
- if (percent) {
- for (const p of percent) {
- const v = math.eval(p.replace('%', '/100'));
- formula = formula.replace(p, v);
- }
- }
- try {
- // 使用mathjs计算 math.eval('17259401.95*0.9') = 15533461.754999999,正确应为 15533461.755
- // const value = math.eval(formula);
- // 使用逆波兰法四则运算,可防止出现误差,但是只支持四则运算,不支持科学运算
- // const value = this.ctx.helper.calcExprStrRpn(formula);
- // 使用mathjs的大数运算,可支持所有
- const value = parseFloat(math.eval(formula));
- return Number.isFinite(value) ? value : 0;
- } catch(err) {
- return 0;
- }
- }
- /**
- * 计算起扣金额、付(扣)款限额
- *
- * @param {Array} pays - (标段)合同支付数据
- */
- async calculateStartRangePrice (pays) {
- //const order = this.stage.curOrder;
- for (const p of pays) {
- // 非本期,本次添加的合同支付项,不允许计算,其中默认添加的合同支付项,归属于第一期原报
- // if (p.csorder === this.stage.order || (p.csorder === 0 || this.stage.order === 1)) {
- // if (p.csaorder === order) {
- // }
- // }
- // 上一期已计量的合同支付项,不予计算起扣金额、扣款限额
- if (!p.pre_used) {
- if (!p.sprice && p.sexpr && p.sexpr !== '') {
- p.sprice = this.ctx.helper.round(this._calculateExpr(p.sexpr), this.decimal);
- } else if (p.sprice && !p.sexpr) {
- p.sprice = this.ctx.helper.round(p.sprice, this.decimal);
- }
- if (!p.rprice && p.rexpr && p.rexpr !== '') {
- p.rprice = this.ctx.helper.round(this._calculateExpr(p.rexpr), this.decimal);
- } else if (p.rprice && !p.rexpr) {
- p.rprice = this.ctx.helper.round(p.rprice, this.decimal);
- }
- }
- }
- }
- /**
- * 累计 计量等数据
- */
- async _getAddCalcRela() {
- if (this.cur && this.add) return;
- this.pre = this.stage.order > 1 ? await this.ctx.service.stageBillsFinal.getSumTotalPrice(this.stage.tid, this.stage.order - 1) : {};
- this.cur = await this.ctx.service.stageBills.getSumTotalPrice(this.stage);
- this.add = {};
- if (this.pre) {
- this.add.contract_tp = this.ctx.helper.add(this.pre.contract_tp, this.cur.contract_tp);
- this.add.qc_tp = this.ctx.helper.add(this.pre.qc_tp, this.cur.qc_tp);
- } else {
- this.add.contract_tp = this.cur.contract_tp;
- this.add.qc_tp = this.cur.qc_tp;
- }
- this.add.gather_tp = this.ctx.helper.add(this.add.contract_tp, this.add.qc_tp);
- }
- /**
- * 检查是否到达 计提期限
- * @param pay
- */
- _checkDeadline(pay) {
- if (pay.dl_type === deadlineType.tp.value) {
- const deadlineTp = this.add[pay.dl_tp_type + '_tp'];
- if (deadlineTp > pay.dl_tp) {
- return true;
- }
- } else if (pay.dl_type === deadlineType.count.value) {
- return this.stage.order >= pay.dl_count;
- } else {
- return false;
- }
- }
- getLeafOrder(data, pays, parentOrder) {
- // if (!data) return [];
- // if (!data.expr) return [`f${data.order}`];
- // const orderParam = data.expr.match(this.orderReg);
- // if (!orderParam || orderParam.length === 0) return [`f${data.order}`];
- //
- // const result = [...orderParam];
- // for (const op of orderParam) {
- // const order = op.substring(1, op.length);
- // if (parseInt(order) === data.order || op === parentOrder) {
- // result.push(op);
- // } else {
- // result.push(...this.getLeafOrder(pays[parseInt(order) -1], pays, `f${data.order}`));
- // }
- // }
- // return this.ctx.helper._.uniq(result);
- if (!data || !data.expr) return [];
- const orderParam = data.expr.match(this.orderReg);
- if (!orderParam || orderParam.length === 0) return [];
- const result = [...orderParam];
- for (const op of orderParam) {
- const order = op.substring(1, op.length);
- if (parseInt(order) === data.order || op === parentOrder) {
- result.push(op);
- } else {
- const sub = this.getLeafOrder(pays[parseInt(order) -1], pays, `f${data.order}`);
- if (sub.length > 0) {
- result.push(...sub);
- } else {
- result.push(op);
- }
- }
- }
- return this.ctx.helper._.uniq(result);
- }
- sortPaysByCalc(pays) {
- for (const pay of pays) {
- pay.calcLeaf = this.getLeafOrder(pay, pays);
- }
- pays.sort((x, y) => {return x.calcLeaf.length - y.calcLeaf.length; });
- }
- sortPaysByOrder(pays) {
- pays.sort((x, y) => { return x.order - y.order; });
- }
- /**
- * 计算本期、截止本期金额
- * @param {Array} pays - (标段&期)合同支付数据
- */
- async calculate(pays) {
- this.yf = pays.find(function (p) {
- return p.ptype === payType.yf;
- });
- this.sf = pays.find(function (p) {
- return p.ptype === payType.sf;
- });
- if (!this.yf) return false;
- await this._getAddCalcRela();
- this.yf.tp = 0;
- for (const p of pays) {
- if (p.ptype === payType.normal || p.ptype === payType.wc) {
- if (!p.pause && (!p.sprice || this.add.gather_tp >= p.sprice)) {
- if (p.expr && p.expr !== '') {
- const value = this.ctx.helper.round(this._calculateTpExpr(p, pays), this.decimal);
- if (p.rprice) {
- if (this._checkDeadline(p)) {
- p.tp = this.ctx.helper.sub(p.rprice, p.pre_tp);
- } else {
- p.tp = Math.min(this.ctx.helper.sub(p.rprice, p.pre_tp), value);
- }
- } else {
- p.tp = value;
- }
- } else if (p.tp && !this.ctx.helper.checkZero(p.tp)) {
- if (p.rprice) {
- if (this._checkDeadline(p)) {
- p.tp = this.ctx.helper.sub(p.rprice, p.pre_tp);
- } else {
- p.tp = Math.min(this.ctx.helper.sub(p.rprice, p.pre_tp), this.ctx.helper.round(p.tp, this.decimal));
- }
- } else {
- p.tp = this.ctx.helper.round(p.tp, this.decimal);
- }
- } else {
- if (p.rprice) {
- if (this._checkDeadline(p)) {
- p.tp = this.ctx.helper.sub(p.rprice, p.pre_tp);
- }
- }
- }
- } else {
- p.tp = 0;
- }
- // 累加 至 应付
- if (p.is_yf) {
- if (p.minus) {
- this.yf.tp = this.ctx.helper.sub(this.yf.tp, p.tp);
- } else {
- this.yf.tp = this.ctx.helper.add(this.yf.tp, p.tp);
- }
- }
- }
- p.end_tp = this.ctx.helper.round(this.ctx.helper.add(p.tp, p.pre_tp), this.decimal);
- }
- this.yf.end_tp = this.ctx.helper.add(this.yf.tp, this.yf.pre_tp);
- const bqyf = this.bases.find(function (x) {return x.code === 'bqyf'});
- if (bqyf) {
- bqyf.value = this.yf.tp;
- }
- if (this.sf.expr === null || this.sf.expr === '') {
- if (this.sf.rprice) {
- this.sf.tp = Math.min(this.ctx.helper.sub(this.sf.rprice, this.sf.pre_tp), this.yf.tp);
- } else {
- this.sf.tp = this.yf.tp;
- }
- } else {
- const value = this.ctx.helper.round(this._calculateTpExpr(this.sf, pays), this.decimal);
- if (this.sf.rprice) {
- this.sf.tp = Math.min(this.ctx.helper.sub(this.sf.rprice, this.sf.pre_tp), value);
- } else {
- this.sf.tp = this.ctx.helper.round(value, this.decimal);
- }
- }
- this.sf.end_tp = this.ctx.helper.add(this.sf.tp, this.sf.pre_tp);
- }
- async calculateAll(pays) {
- await this.getCalcBase();
- await this._getAddCalcRela();
- await this.calculateStartRangePrice(pays);
- this.sortPaysByCalc(pays);
- await this.calculate(pays);
- this.sortPaysByOrder(pays);
- }
- }
- module.exports = PayCalculate;
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