shop
87 lines
2.8 KiB
JavaScript
87 lines
2.8 KiB
JavaScript
const express = require('express');
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const { formatPrice } = require('../db');
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const { getCart, cartCount, cartItems } = require('../cart');
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const { requireCookieConsent } = require('../middleware/cookieConsent');
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const { asyncHandler } = require('../utils/asyncHandler');
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const promoService = require('../services/promo');
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const loyaltyService = require('../services/loyalty');
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const { buildCartPricing } = require('../services/pricing');
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const router = express.Router();
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router.use(requireCookieConsent);
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router.use((req, res, next) => {
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res.locals.cartCount = cartCount(getCart(req));
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res.locals.formatPrice = formatPrice;
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next();
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});
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function cartRedirect(msg, type = 'error') {
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const param = type === 'success' ? 'promo_ok' : 'promo_error';
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return `/cart?${param}=${encodeURIComponent(msg)}`;
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}
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router.post(
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'/cart/promo',
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asyncHandler(async (req, res) => {
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const cart = getCart(req);
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const items = await cartItems(cart);
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if (!items.length) {
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return res.redirect(cartRedirect('Корзина пуста'));
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}
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const subtotal = items.reduce((s, i) => s + i.line_total, 0);
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const promo = await promoService.findPromoByCode(req.body.code);
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const check = promoService.validatePromo(promo, subtotal);
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if (!check.ok) {
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delete req.session.appliedPromoCode;
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return res.redirect(cartRedirect(check.error));
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}
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req.session.appliedPromoCode = promo.code;
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res.redirect(cartRedirect(`Промокод ${promo.code} применён`, 'success'));
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})
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);
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router.post('/cart/promo/remove', (req, res) => {
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delete req.session.appliedPromoCode;
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res.redirect(cartRedirect('Промокод удалён', 'success'));
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});
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router.post(
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'/cart/loyalty',
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asyncHandler(async (req, res) => {
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if (!req.session.userId) {
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return res.redirect('/login?next=/cart');
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}
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const cart = getCart(req);
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const items = await cartItems(cart);
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if (!items.length) {
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return res.redirect(cartRedirect('Корзина пуста'));
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}
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const pricing = await buildCartPricing(items, req.session, req.session.userId);
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const maxPoints = loyaltyService.pointsForDiscount(
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Math.max(0, pricing.subtotal - pricing.promoDiscount)
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);
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const balance = pricing.loyaltyBalance;
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if (req.body.use_all === '1') {
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req.session.loyaltyPointsToUse = Math.min(balance, maxPoints);
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} else {
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const pts = Math.max(0, parseInt(req.body.points, 10) || 0);
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req.session.loyaltyPointsToUse = Math.min(pts, balance, maxPoints);
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}
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res.redirect(cartRedirect('Баллы лояльности применены', 'success'));
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})
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);
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router.post('/cart/loyalty/remove', (req, res) => {
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delete req.session.loyaltyPointsToUse;
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res.redirect(cartRedirect('Списание баллов отменено', 'success'));
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});
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module.exports = router;
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