postroit-raspisanie-kruzhkov/server.js

116 lines
4.0 KiB
JavaScript

const http = require("http");
const fs = require("fs");
const path = require("path");
const PORT = process.env.PORT;
const DATA = path.join(__dirname, "data.json");
function readData() {
try { return JSON.parse(fs.readFileSync(DATA, "utf8")); } catch (_) { return { classes: [], reminders: [] }; }
}
function writeData(data) {
fs.writeFileSync(DATA, JSON.stringify(data, null, 2));
}
function body(req) {
return new Promise((resolve) => {
let s = "";
req.on("data", (c) => (s += c));
req.on("end", () => { try { resolve(JSON.parse(s || "{}")); } catch (_) { resolve({}); } });
});
}
http.createServer(async (req, res) => {
res.setHeader("Access-Control-Allow-Origin", "*");
res.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
res.setHeader("Access-Control-Allow-Headers", "Content-Type");
if (req.method === "OPTIONS") {
res.writeHead(200);
return res.end();
}
const url = req.url.split("?")[0];
// API: получить все кружки
if (req.method === "GET" && url === "/api/classes") {
const data = readData();
res.writeHead(200, { "Content-Type": "application/json" });
return res.end(JSON.stringify(data.classes || []));
}
// API: добавить кружок
if (req.method === "POST" && url === "/api/classes") {
const item = await body(req);
const data = readData();
if (!data.classes) data.classes = [];
data.classes.push({ id: Date.now(), ...item });
writeData(data);
res.writeHead(200, { "Content-Type": "application/json" });
return res.end(JSON.stringify({ ok: true }));
}
// API: обновить кружок
if (req.method === "PUT" && url === "/api/classes") {
const item = await body(req);
const data = readData();
const idx = (data.classes || []).findIndex(c => c.id === item.id);
if (idx >= 0) {
data.classes[idx] = { ...data.classes[idx], ...item };
writeData(data);
}
res.writeHead(200, { "Content-Type": "application/json" });
return res.end(JSON.stringify({ ok: true }));
}
// API: удалить кружок
if (req.method === "DELETE" && url === "/api/classes") {
const { id } = await body(req);
const data = readData();
data.classes = (data.classes || []).filter(c => c.id !== id);
writeData(data);
res.writeHead(200, { "Content-Type": "application/json" });
return res.end(JSON.stringify({ ok: true }));
}
// API: получить напоминания
if (req.method === "GET" && url === "/api/reminders") {
const data = readData();
res.writeHead(200, { "Content-Type": "application/json" });
return res.end(JSON.stringify(data.reminders || []));
}
// API: добавить напоминание
if (req.method === "POST" && url === "/api/reminders") {
const item = await body(req);
const data = readData();
if (!data.reminders) data.reminders = [];
data.reminders.push({ id: Date.now(), ...item });
writeData(data);
res.writeHead(200, { "Content-Type": "application/json" });
return res.end(JSON.stringify({ ok: true }));
}
// API: удалить напоминание
if (req.method === "DELETE" && url === "/api/reminders") {
const { id } = await body(req);
const data = readData();
data.reminders = (data.reminders || []).filter(r => r.id !== id);
writeData(data);
res.writeHead(200, { "Content-Type": "application/json" });
return res.end(JSON.stringify({ ok: true }));
}
// Статика
let file = url === "/" ? "/index.html" : url;
const full = path.join(__dirname, file);
if (full.startsWith(__dirname) && fs.existsSync(full) && fs.statSync(full).isFile()) {
const ext = path.extname(full);
const type = ext === ".css" ? "text/css" : ext === ".js" ? "application/javascript" : "text/html";
res.writeHead(200, { "Content-Type": type + "; charset=utf-8" });
return res.end(fs.readFileSync(full));
}
res.writeHead(404);
res.end("Not found");
}).listen(PORT, () => console.log("Сервер запущен на порту " + PORT));