Add discount simulator
This commit is contained in:
475
inventory-server/dashboard/acot-server/routes/discounts.js
Normal file
475
inventory-server/dashboard/acot-server/routes/discounts.js
Normal file
@@ -0,0 +1,475 @@
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const express = require('express');
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const { DateTime } = require('luxon');
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const { getDbConnection } = require('../db/connection');
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const router = express.Router();
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const RANGE_BOUNDS = [
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10, 20, 30, 40, 50, 60, 70, 80, 90,
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100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200,
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300, 400, 500, 1000, 1500, 2000
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];
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const FINAL_BUCKET_KEY = 'PLUS';
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function buildRangeDefinitions() {
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const ranges = [];
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let previous = 0;
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for (const bound of RANGE_BOUNDS) {
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const label = `$${previous.toLocaleString()} - $${bound.toLocaleString()}`;
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const key = bound.toString().padStart(5, '0');
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ranges.push({
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min: previous,
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max: bound,
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label,
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key,
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sort: bound
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});
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previous = bound;
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}
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// Remove the 2000+ category - all orders >2000 will go into the 2000 bucket
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return ranges;
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}
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const RANGE_DEFINITIONS = buildRangeDefinitions();
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const BUCKET_CASE = (() => {
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const parts = [];
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for (let i = 0; i < RANGE_BOUNDS.length; i++) {
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const bound = RANGE_BOUNDS[i];
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const key = bound.toString().padStart(5, '0');
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if (i === RANGE_BOUNDS.length - 1) {
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// For the last bucket (2000), include all orders >= 1500 (previous bound)
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parts.push(`ELSE '${key}'`);
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} else {
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parts.push(`WHEN o.summary_subtotal <= ${bound} THEN '${key}'`);
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}
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}
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return `CASE\n ${parts.join('\n ')}\n END`;
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})();
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const DEFAULT_POINT_DOLLAR_VALUE = 0.005; // 1000 points = $5
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const DEFAULTS = {
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merchantFeePercent: 2.9,
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fixedCostPerOrder: 1.5,
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pointsPerDollar: 0,
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pointsRedemptionRate: 0,
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pointDollarValue: DEFAULT_POINT_DOLLAR_VALUE,
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};
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function parseDate(value, fallback) {
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if (!value) {
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return fallback;
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}
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const parsed = DateTime.fromISO(value);
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if (!parsed.isValid) {
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return fallback;
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}
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return parsed;
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}
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function formatDateForSql(dt) {
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return dt.toFormat('yyyy-LL-dd HH:mm:ss');
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}
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function getMidpoint(range) {
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if (range.max == null) {
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return range.min + 200; // Rough estimate for 2000+
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}
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return (range.min + range.max) / 2;
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}
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router.get('/promos', async (req, res) => {
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let connection;
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try {
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const { connection: conn, release } = await getDbConnection();
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connection = conn;
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const releaseConnection = release;
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const sql = `
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SELECT
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p.promo_id AS id,
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p.promo_code AS code,
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p.promo_description_online AS description_online,
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p.promo_description_private AS description_private,
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p.date_start,
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p.date_end,
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COALESCE(u.usage_count, 0) AS usage_count
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FROM promos p
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LEFT JOIN (
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SELECT
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discount_code,
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COUNT(DISTINCT order_id) AS usage_count
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FROM order_discounts
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WHERE discount_type = 10 AND discount_active = 1
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GROUP BY discount_code
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) u ON u.discount_code = p.promo_id
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WHERE p.date_end >= DATE_SUB(CURDATE(), INTERVAL 3 YEAR)
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ORDER BY p.date_end DESC, p.date_start DESC
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LIMIT 200
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`;
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const [rows] = await connection.execute(sql);
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releaseConnection();
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const promos = rows.map(row => ({
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id: Number(row.id),
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code: row.code,
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description: row.description_online || row.description_private || '',
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dateStart: row.date_start,
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dateEnd: row.date_end,
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usageCount: Number(row.usage_count || 0)
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}));
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res.json({ promos });
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} catch (error) {
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if (connection) {
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try {
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connection.destroy();
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} catch (destroyError) {
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console.error('Failed to destroy connection after error:', destroyError);
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}
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}
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console.error('Error fetching promos:', error);
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res.status(500).json({ error: 'Failed to fetch promos' });
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}
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});
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router.post('/simulate', async (req, res) => {
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const {
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dateRange = {},
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filters = {},
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productPromo = {},
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shippingPromo = {},
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shippingTiers = [],
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merchantFeePercent,
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fixedCostPerOrder,
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pointsConfig = {}
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} = req.body || {};
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const endDefault = DateTime.now();
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const startDefault = endDefault.minus({ months: 6 });
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const startDt = parseDate(dateRange.start, startDefault).startOf('day');
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const endDt = parseDate(dateRange.end, endDefault).endOf('day');
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const shipCountry = filters.shipCountry || 'US';
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const promoIds = Array.isArray(filters.promoIds) ? filters.promoIds.filter(Boolean) : [];
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const config = {
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merchantFeePercent: typeof merchantFeePercent === 'number' ? merchantFeePercent : DEFAULTS.merchantFeePercent,
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fixedCostPerOrder: typeof fixedCostPerOrder === 'number' ? fixedCostPerOrder : DEFAULTS.fixedCostPerOrder,
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productPromo: {
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type: productPromo.type || 'none',
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value: Number(productPromo.value || 0),
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minSubtotal: Number(productPromo.minSubtotal || 0)
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},
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shippingPromo: {
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type: shippingPromo.type || 'none',
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value: Number(shippingPromo.value || 0),
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minSubtotal: Number(shippingPromo.minSubtotal || 0),
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maxDiscount: Number(shippingPromo.maxDiscount || 0)
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},
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shippingTiers: Array.isArray(shippingTiers)
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? shippingTiers
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.map(tier => ({
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threshold: Number(tier.threshold || 0),
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mode: tier.mode === 'percentage' || tier.mode === 'flat' ? tier.mode : 'percentage',
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value: Number(tier.value || 0)
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}))
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.filter(tier => tier.threshold >= 0 && tier.value >= 0)
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.sort((a, b) => a.threshold - b.threshold)
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: [],
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points: {
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pointsPerDollar: typeof pointsConfig.pointsPerDollar === 'number' ? pointsConfig.pointsPerDollar : null,
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redemptionRate: typeof pointsConfig.redemptionRate === 'number' ? pointsConfig.redemptionRate : null,
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pointDollarValue: typeof pointsConfig.pointDollarValue === 'number'
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? pointsConfig.pointDollarValue
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: DEFAULT_POINT_DOLLAR_VALUE
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}
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};
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let connection;
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let release;
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try {
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const dbConn = await getDbConnection();
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connection = dbConn.connection;
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release = dbConn.release;
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const params = [
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shipCountry,
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formatDateForSql(startDt),
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formatDateForSql(endDt)
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];
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const promoJoin = promoIds.length > 0
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? 'JOIN order_discounts od ON od.order_id = o.order_id AND od.discount_active = 1 AND od.discount_type = 10'
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: '';
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if (promoIds.length > 0) {
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params.push(promoIds);
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}
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params.push(formatDateForSql(startDt), formatDateForSql(endDt));
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const filteredOrdersQuery = `
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SELECT
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o.order_id,
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o.summary_subtotal,
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o.summary_discount_subtotal,
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o.summary_shipping,
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o.ship_method_rate,
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o.ship_method_cost,
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o.summary_points,
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${BUCKET_CASE} AS bucket_key
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FROM _order o
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${promoJoin}
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WHERE o.summary_total > 0
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AND o.summary_subtotal > 0
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AND o.order_status NOT IN (15)
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AND o.ship_method_selected <> 'holdit'
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AND o.ship_country = ?
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AND o.date_placed BETWEEN ? AND ?
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${promoIds.length > 0 ? 'AND od.discount_code IN (?)' : ''}
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`;
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const bucketQuery = `
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SELECT
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f.bucket_key,
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COUNT(*) AS order_count,
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SUM(f.summary_subtotal) AS subtotal_sum,
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SUM(f.summary_discount_subtotal) AS product_discount_sum,
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SUM(f.summary_subtotal + f.summary_discount_subtotal) AS regular_subtotal_sum,
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SUM(f.ship_method_rate) AS ship_rate_sum,
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SUM(f.ship_method_cost) AS ship_cost_sum,
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SUM(f.summary_points) AS points_awarded_sum,
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SUM(COALESCE(p.points_redeemed, 0)) AS points_redeemed_sum,
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SUM(COALESCE(c.total_cogs, 0)) AS cogs_sum,
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AVG(f.summary_subtotal) AS avg_subtotal,
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AVG(f.summary_discount_subtotal) AS avg_product_discount,
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AVG(f.ship_method_rate) AS avg_ship_rate,
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AVG(f.ship_method_cost) AS avg_ship_cost,
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AVG(COALESCE(c.total_cogs, 0)) AS avg_cogs
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FROM (
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${filteredOrdersQuery}
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) AS f
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LEFT JOIN (
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SELECT order_id, SUM(cogs_amount) AS total_cogs
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FROM report_sales_data
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WHERE action IN (1,2,3)
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AND date_change BETWEEN ? AND ?
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GROUP BY order_id
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) AS c ON c.order_id = f.order_id
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LEFT JOIN (
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SELECT order_id, SUM(discount_amount_points) AS points_redeemed
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FROM order_discounts
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WHERE discount_type = 20 AND discount_active = 1
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GROUP BY order_id
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) AS p ON p.order_id = f.order_id
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GROUP BY f.bucket_key
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`;
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const [rows] = await connection.execute(bucketQuery, params);
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const totals = {
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orders: 0,
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subtotal: 0,
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productDiscount: 0,
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regularSubtotal: 0,
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shipRate: 0,
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shipCost: 0,
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cogs: 0,
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pointsAwarded: 0,
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pointsRedeemed: 0
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};
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const rowMap = new Map();
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for (const row of rows) {
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const key = row.bucket_key || FINAL_BUCKET_KEY;
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const parsed = {
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orderCount: Number(row.order_count || 0),
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subtotalSum: Number(row.subtotal_sum || 0),
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productDiscountSum: Number(row.product_discount_sum || 0),
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regularSubtotalSum: Number(row.regular_subtotal_sum || 0),
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shipRateSum: Number(row.ship_rate_sum || 0),
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shipCostSum: Number(row.ship_cost_sum || 0),
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pointsAwardedSum: Number(row.points_awarded_sum || 0),
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pointsRedeemedSum: Number(row.points_redeemed_sum || 0),
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cogsSum: Number(row.cogs_sum || 0),
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avgSubtotal: Number(row.avg_subtotal || 0),
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avgProductDiscount: Number(row.avg_product_discount || 0),
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avgShipRate: Number(row.avg_ship_rate || 0),
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avgShipCost: Number(row.avg_ship_cost || 0),
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avgCogs: Number(row.avg_cogs || 0)
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};
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rowMap.set(key, parsed);
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totals.orders += parsed.orderCount;
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totals.subtotal += parsed.subtotalSum;
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totals.productDiscount += parsed.productDiscountSum;
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totals.regularSubtotal += parsed.regularSubtotalSum;
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totals.shipRate += parsed.shipRateSum;
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totals.shipCost += parsed.shipCostSum;
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totals.cogs += parsed.cogsSum;
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totals.pointsAwarded += parsed.pointsAwardedSum;
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totals.pointsRedeemed += parsed.pointsRedeemedSum;
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}
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const productDiscountRate = totals.regularSubtotal > 0
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? totals.productDiscount / totals.regularSubtotal
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: 0;
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const pointsPerDollar = config.points.pointsPerDollar != null
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? config.points.pointsPerDollar
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: totals.subtotal > 0
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? totals.pointsAwarded / totals.subtotal
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: 0;
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const redemptionRate = config.points.redemptionRate != null
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? config.points.redemptionRate
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: totals.pointsAwarded > 0
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? Math.min(1, totals.pointsRedeemed / totals.pointsAwarded)
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: 0;
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const pointDollarValue = config.points.pointDollarValue || DEFAULT_POINT_DOLLAR_VALUE;
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const bucketResults = [];
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let weightedProfitAmount = 0;
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let weightedProfitPercent = 0;
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for (const range of RANGE_DEFINITIONS) {
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const data = rowMap.get(range.key) || {
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orderCount: 0,
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avgSubtotal: 0,
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avgShipRate: 0,
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avgShipCost: 0,
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avgCogs: 0
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};
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const orderValue = data.avgSubtotal > 0 ? data.avgSubtotal : getMidpoint(range);
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const shippingChargeBase = data.avgShipRate > 0 ? data.avgShipRate : 0;
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const actualShippingCost = data.avgShipCost > 0 ? data.avgShipCost : 0;
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const productCogs = data.avgCogs > 0 ? data.avgCogs : 0;
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const productDiscountAmount = orderValue * productDiscountRate;
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const effectiveRegularPrice = productDiscountRate < 0.99
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? orderValue / (1 - productDiscountRate)
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: orderValue;
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let promoProductDiscount = 0;
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if (config.productPromo.type === 'percentage_subtotal' && orderValue >= config.productPromo.minSubtotal) {
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promoProductDiscount = Math.min(orderValue, (config.productPromo.value / 100) * orderValue);
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} else if (config.productPromo.type === 'percentage_regular' && orderValue >= config.productPromo.minSubtotal) {
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const targetRate = config.productPromo.value / 100;
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const additionalRate = Math.max(0, targetRate - productDiscountRate);
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promoProductDiscount = Math.min(orderValue, additionalRate * effectiveRegularPrice);
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} else if (config.productPromo.type === 'fixed_amount' && orderValue >= config.productPromo.minSubtotal) {
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promoProductDiscount = Math.min(orderValue, config.productPromo.value);
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}
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let shippingAfterAuto = shippingChargeBase;
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for (const tier of config.shippingTiers) {
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if (orderValue >= tier.threshold) {
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if (tier.mode === 'percentage') {
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shippingAfterAuto = shippingChargeBase * Math.max(0, 1 - tier.value / 100);
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} else if (tier.mode === 'flat') {
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shippingAfterAuto = tier.value;
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}
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}
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}
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let shipPromoDiscount = 0;
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if (config.shippingPromo.type !== 'none' && orderValue >= config.shippingPromo.minSubtotal) {
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if (config.shippingPromo.type === 'percentage') {
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shipPromoDiscount = shippingAfterAuto * (config.shippingPromo.value / 100);
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} else if (config.shippingPromo.type === 'fixed') {
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shipPromoDiscount = config.shippingPromo.value;
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}
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if (config.shippingPromo.maxDiscount > 0) {
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shipPromoDiscount = Math.min(shipPromoDiscount, config.shippingPromo.maxDiscount);
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}
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shipPromoDiscount = Math.min(shipPromoDiscount, shippingAfterAuto);
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}
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const customerShipCost = Math.max(0, shippingAfterAuto - shipPromoDiscount);
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const customerItemCost = Math.max(0, orderValue - promoProductDiscount);
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const totalRevenue = customerItemCost + customerShipCost;
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const merchantFees = totalRevenue * (config.merchantFeePercent / 100);
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const pointsCost = customerItemCost * pointsPerDollar * redemptionRate * pointDollarValue;
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const fixedCosts = config.fixedCostPerOrder;
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const totalCosts = productCogs + actualShippingCost + merchantFees + pointsCost + fixedCosts;
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const profit = totalRevenue - totalCosts;
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const profitPercent = totalRevenue > 0 ? (profit / totalRevenue) : 0;
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const weight = totals.orders > 0 ? (data.orderCount || 0) / totals.orders : 0;
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weightedProfitAmount += profit * weight;
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weightedProfitPercent += profitPercent * weight;
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bucketResults.push({
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key: range.key,
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label: range.label,
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min: range.min,
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max: range.max,
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orderCount: data.orderCount || 0,
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weight,
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orderValue,
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productDiscountAmount,
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promoProductDiscount,
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customerItemCost,
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shippingChargeBase,
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shippingAfterAuto,
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shipPromoDiscount,
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customerShipCost,
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actualShippingCost,
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totalRevenue,
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productCogs,
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merchantFees,
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pointsCost,
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fixedCosts,
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totalCosts,
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profit,
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profitPercent
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});
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}
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if (release) {
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release();
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}
|
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res.json({
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dateRange: {
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start: startDt.toISO(),
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||||
end: endDt.toISO()
|
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},
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totals: {
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orders: totals.orders,
|
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subtotal: totals.subtotal,
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productDiscountRate,
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pointsPerDollar,
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redemptionRate,
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||||
pointDollarValue,
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||||
weightedProfitAmount,
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||||
weightedProfitPercent
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},
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||||
buckets: bucketResults
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});
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||||
} catch (error) {
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||||
if (release) {
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||||
try {
|
||||
release();
|
||||
} catch (releaseError) {
|
||||
console.error('Failed to release connection after error:', releaseError);
|
||||
}
|
||||
} else if (connection) {
|
||||
try {
|
||||
connection.destroy();
|
||||
} catch (destroyError) {
|
||||
console.error('Failed to destroy connection after error:', destroyError);
|
||||
}
|
||||
}
|
||||
|
||||
console.error('Error running discount simulation:', error);
|
||||
res.status(500).json({ error: 'Failed to run discount simulation' });
|
||||
}
|
||||
});
|
||||
|
||||
module.exports = router;
|
||||
Reference in New Issue
Block a user