87 lines
2.3 KiB
TypeScript
87 lines
2.3 KiB
TypeScript
import "dotenv/config";
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import express, { Express, Request } from "express";
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import cors from "cors";
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import { PrismaClient, EncryptedNote } from "@prisma/client";
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import { addDays } from "./util";
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import helmet from "helmet";
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import rateLimit from "express-rate-limit";
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// Initialize middleware clients
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const prisma = new PrismaClient();
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const app: Express = express();
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app.use(express.json());
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app.use(
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helmet({
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crossOriginResourcePolicy: {
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policy: process.env.ENVIRONMENT == "dev" ? "cross-origin" : "same-origin",
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},
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})
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);
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// Apply rate limiting
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const postLimiter = rateLimit({
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windowMs: parseInt(process.env.POST_LIMIT_WINDOW_SECONDS as string) * 1000,
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max: parseInt(process.env.POST_LIMIT as string), // Limit each IP to X requests per window
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standardHeaders: true, // Return rate limit info in the `RateLimit-*` headers
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legacyHeaders: false, // Disable the `X-RateLimit-*` headers
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});
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// start the Express server
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app.listen(process.env.PORT, () => {
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console.log(`server started at http://localhost:${process.env.PORT}`);
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});
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// Post new encrypted note
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app.post(
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"/note/",
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postLimiter,
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async (req: Request<{}, {}, EncryptedNote>, res) => {
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const note = req.body;
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const savedNote = await prisma.encryptedNote.create({
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data: { ...note, expire_time: addDays(new Date(), 30) },
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});
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res.json({
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view_url: `${process.env.FRONTEND_URL}/note/${savedNote.id}`,
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expire_time: savedNote.expire_time,
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});
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}
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);
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// Get encrypted note
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app.get("/note/:id", async (req, res) => {
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const note = await prisma.encryptedNote.findUnique({
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where: { id: req.params.id },
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});
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if (note != null) {
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res.send(note);
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}
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res.status(404).send();
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});
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// Default response for any other request
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app.use((req, res, next) => {
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res.status(404).send();
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});
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// Clean up expired notes periodically
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const interval =
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Math.max(parseInt(<string>process.env.CLEANUP_INTERVAL_SECONDS) || 1, 1) *
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1000;
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setInterval(async () => {
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try {
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console.log("[Cleanup] Cleaning up expired notes...");
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const deleted = await prisma.encryptedNote.deleteMany({
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where: {
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expire_time: {
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lte: new Date(),
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},
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},
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});
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console.log(`[Cleanup] Deleted ${deleted.count} expired notes.`);
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} catch (err) {
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console.error(`[Cleanup] Error cleaning expired notes:`);
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console.error(err);
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}
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}, interval);
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