기본 CRUD

유석현(SeokHyun Yu)·2022년 12월 5일

Node.js

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app.js

import express from "express";
import helmet from "helmet";
import morgan from "morgan";
import cors from "cors";
import tweetRouter from "./tweet.router.js";

const app = express();

app.use(express.json());
app.use(morgan("dev"));
app.use(helmet());
app.use(cors());

app.use("/tweet", tweetRouter);

app.use((req, res, next) => {
  res.sendStatus(404);
});

app.use((err, req, res, next) => {
  res.sendStatus(500);
});

app.listen(8000);

app.router.js

import express from "express";

const tweetRouter = express.Router();

let tweets = [
  {
    id: "1",
    createdAt: "2022-12-01",
    name: "SeokHyun Yu",
    username: "ysh",
    text: "Hello",
  },
];

// 전체 조회
tweetRouter.get("/", (req, res) => {
  const tempTweets = req.query.username
    ? tweets.filter((tweet) => tweet.username === req.query.username)
    : tweets;

  res.status(200).json(tempTweets);
});

// 상세 조회
tweetRouter.get("/:id", (req, res) => {
  const { id } = req.params;
  const tweet = tweets.find((tweet) => tweet.id === id);

  if (tweet) {
    res.status(200).json(tweet);
  } else {
    res.status(404).json({ status: 404, message: `id ${id} NOT FOUND` });
  }
});

// 트윗 생성
tweetRouter.post("/", (req, res) => {
  tweets = [req.body, ...tweets];

  res.status(201).json(tweets);
});

// 트윗 수정
tweetRouter.put("/:id", (req, res) => {
  const { id } = req.params;
  const { text } = req.body;
  const tweet = tweets.find((tweet) => tweet.id === id);

  if (tweet) {
    tweet.text = text;

    res.status(200).json(tweet);
  } else {
    res.status(404).json({ status: 404, message: `id ${id} NOT FOUND` });
  }
});

// 트윗 삭제
tweetRouter.delete("/:id", (req, res) => {
  const { id } = req.params;
  const prevLength = tweets.length;
  tweets = tweets.filter((tweet) => tweet.id !== id);

  if (prevLength !== tweets.length) {
    res.sendStatus(204);
  } else {
    res.status(404).json({ status: 404, message: `id ${id} NOT FOUND` });
  }
});

export default tweetRouter;