100 lines
2.4 KiB
JavaScript
100 lines
2.4 KiB
JavaScript
import fs from 'fs';
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import lightcookie from 'lightcookie';
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const dbJSON = fs.readFileSync(new URL('./db.json', import.meta.url));
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const db = JSON.parse(dbJSON);
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const products = db.products;
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const productMap = new Map(products.map((product) => [product.id, product]));
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// Normally this would be in a database.
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const userCartItems = new Map();
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const routes = [
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{
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match: /\/api\/products\/([0-9])+/,
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async handle(_req, res, [, idStr]) {
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const id = Number(idStr);
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if (productMap.has(id)) {
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const product = productMap.get(id);
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res.writeHead(200, {
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'Content-Type': 'application/json',
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});
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res.end(JSON.stringify(product));
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} else {
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res.writeHead(404, {
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'Content-Type': 'text/plain',
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});
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res.end('Not found');
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}
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},
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},
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{
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match: /\/api\/products/,
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async handle(_req, res) {
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res.writeHead(200, {
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'Content-Type': 'application/json',
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});
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res.end(JSON.stringify(products));
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},
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},
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{
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match: /\/api\/cart/,
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async handle(req, res) {
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res.writeHead(200, {
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'Content-Type': 'application/json',
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});
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let cookie = req.headers.cookie;
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let userId = cookie ? lightcookie.parse(cookie)['user-id'] : '1'; // default for testing
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if (!userId || !userCartItems.has(userId)) {
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res.end(JSON.stringify({ items: [] }));
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return;
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}
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let items = userCartItems.get(userId);
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let array = Array.from(items.values());
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res.end(JSON.stringify({ items: array }));
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},
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},
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{
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match: /\/api\/add-to-cart/,
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async handle(req, res) {
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let body = '';
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req.on('data', (chunk) => (body += chunk));
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return new Promise((resolve) => {
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req.on('end', () => {
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let cookie = req.headers.cookie;
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let userId = lightcookie.parse(cookie)['user-id'];
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let msg = JSON.parse(body);
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if (!userCartItems.has(userId)) {
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userCartItems.set(userId, new Map());
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}
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let cart = userCartItems.get(userId);
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if (cart.has(msg.id)) {
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cart.get(msg.id).count++;
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} else {
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cart.set(msg.id, { id: msg.id, name: msg.name, count: 1 });
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}
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res.writeHead(200, {
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'Content-Type': 'application/json',
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});
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res.end(JSON.stringify({ ok: true }));
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});
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});
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},
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},
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];
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export async function apiHandler(req, res) {
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for (const route of routes) {
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const match = route.match.exec(req.url);
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if (match) {
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return route.handle(req, res, match);
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}
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}
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res.writeHead(404, {
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'Content-Type': 'text/plain',
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});
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res.end('Not found');
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}
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