React 및 Firebase와 메모 공유 앱 만들기

데모

전제 조건

1단계 - 반응 앱 생성

$ npx create-react-app@latest mynoteapp

2단계 - TextArea 생성

<textarea id="txt" cols="30" rows="10" placeholder="Enter some text!" value={text} onChange={e => setText(e.target.value)} onKeyDown={keySound}></textarea>

*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body{
  height: 100%;
  overflow: hidden;
}
textarea{
  width: 100%;
  height: 100vh;
  resize: none;
  margin: 5px;
  font-size: 25px;
  outline: none;
  border: none;
}

3단계 - dat.gui를 사용하여 설정 메뉴 추가

$ npm i dat.gui

import * as dat from 'dat.gui';

const gui = await new dat.GUI({hideable: false});

const obj = {
            fontSize : 25,
            fontFamily : 'monospace',
            saveFile: () => {
                const btn = document.querySelector('#saveBtn')
                btn.click()
            }
        }

 gui.add(obj, 'fontSize').min(8).max(60).step(1).onChange(e => {
            document.querySelector('textarea').style.fontSize = `${e}px`
        })

gui.add(obj, 'fontFamily', {
            'Monospace': 'monospace',
            'Roboto': 'Roboto',
            'Poppins': 'Poppins',
            'Cursive': 'Cursive',
        }).onChange(e => {
            document.querySelector('textarea').style.fontFamily = e
        })

gui.add(obj, 'saveFile')

4단계 - 데이터베이스 설정

새 웹 응용 프로그램 만들기

$ npm install firebase

import firebase from "firebase/compat/app"
import "firebase/compat/firestore"

const firebaseConfig = {
    apiKey: "YOUR_API_KEY",
    authDomain: "YOUR_AUTH_DOMAIN",
    projectId: "YOUR_PROJECT_ID",
    storageBucket: "YOUR_STORAGE_BUCKET",
    messagingSenderId: "YOUR_MESSAGING_ID",
    appId: "YOUR_APP_ID"
  };


const app = firebase.initializeApp(firebaseConfig);

const db = app.firestore();


export default db

Firestore Database로 이동

데이터베이스를 생성한 후 대시보드의 규칙 탭으로 이동합니다.

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write: if true;
    }
  }
}

import db from '../firebase'

const handleSave = async () => {
        let slug = tinyid.unique()
        keySound()
        let today = new Date();
        const dd = String(today.getDate()).padStart(2, '0');
        const mm = String(today.getMonth() + 1).padStart(2, '0'); //January is 0!
        const yyyy = today.getFullYear();
        today =  dd + '/' + mm + '/' + yyyy
        await db.collection('notes').doc(slug).set({
            text: text,
            date: today,
        })
        navigate(`/${slug}`)
    }

useEffect(() => {
        const handleLoad = async () => {
            const doc = await db.collection('notes').doc(slug).get()
            setText(doc.data().text)
        }
        handleLoad()
    }, [slug])