Global-object-server NPM

global-object-server

Try this

client

index.html

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <link rel="stylesheet" href="./src/style.css" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Chat on global objects</title>
    </head>
    <body>
        <div id="chats">
            <h1>Chats</h1>
            <section id="listOfChats">Loading...</section>
        </div>

        <div id="chat" style="display: none">
            <section class="messages">Loading...</section>
            <div class="inputSection">
                <input class="inputMessage" />
                <button class="sendBtn">send</button>
            </div>
        </div>
        <script type="module" src="/src/main.ts"></script>
    </body>
</html>

src/main.ts

import { GlobalObject } from 'global-object-client'

import { Chat } from './chat'

interface Chat {
    id: string
    name: string
}

;(async () => {
    const chatsSection = document.querySelector('#chats') as HTMLDivElement

    const listOfChats = document.querySelector('#listOfChats') as HTMLDivElement

    const chats = await GlobalObject.get<Chat[]>(SERVER_URL + '/chats')

    function render() {
        if (!Array.isArray(chats)) return

        listOfChats.innerHTML = ''

        chats.forEach(({ id, name }) => {
            const chat = document.createElement('button')

            chat.classList.add('chat')

            chat.textContent = name

            chat.addEventListener('click', () => {
                chatsSection.style.display = 'none'
                Chat(id)
            })

            listOfChats.appendChild(chat)
        })
    }

    render()

    chats.addEventListener('change', render)
})()

src/chats.ts

import { GlobalObject } from 'global-object-client'

import { SERVER_URL } from './env.json'

interface Message {
    author: string
    text: string
    time: number
}

const userName = localStorage.getItem('userName') || Math.random().toString()

localStorage.setItem('userName', userName)

const messages = document.querySelector('.messages') as HTMLDivElement
const inputMessage = document.querySelector('.inputMessage') as HTMLInputElement
const sendBtn = document.querySelector('.sendBtn') as HTMLButtonElement
const chat = document.querySelector('#chat') as HTMLDivElement

export function Chat(id: string) {
    chat.style.display = 'block'

    GlobalObject.get<Message[]>(SERVER_URL + `/chat/${id}`).then((gObj) => {
        function render() {
            if (!Array.isArray(gObj)) return
            if (GlobalObject.getState(gObj) !== 'added') return

            messages.innerHTML = ''

            gObj.forEach(({ text, time, author }) => {
                const messageDiv = document.createElement('div')
                const messageDivInner = document.createElement('div')
                const timeSpan = document.createElement('span')
                const textSpan = document.createElement('span')
                messageDiv.classList.add('message')
                if (author === userName) messageDiv.classList.add('myMessage')

                textSpan.classList.add('text')
                textSpan.textContent = text

                timeSpan.classList.add('time')
                const date = new Date(time)
                timeSpan.textContent =
                    date.getHours() +
                    ':' +
                    (date.getMinutes() < 10 ? '0' : '') +
                    date.getMinutes()

                messageDivInner.appendChild(textSpan)
                messageDivInner.appendChild(timeSpan)
                messageDiv.appendChild(messageDivInner)
                messages.appendChild(messageDiv)
            })
        }

        function sendMassage() {
            if (!Array.isArray(gObj) || !inputMessage.value.trim()) return

            const message: Message = {
                author: userName,
                text: inputMessage.value,
                time: Date.now(),
            }

            gObj.push(message)
            inputMessage.value = ''
        }

        render()

        gObj.addEventListener('change', render)
        gObj.addEventListener('remove', render)

        sendBtn.addEventListener('click', sendMassage)
        document.addEventListener(
            'keypress',
            ({ key }) => key === 'Enter' && sendMassage()
        )
    })
}

server

main.ts

import { GlobalObject } from 'global-object-server'

import express from 'express'
import { createServer } from 'node:http'

interface Message {
    author: string
    text: string
    time: number
}

interface Chat {
    id: string
    name: string
}

const app = express()

app.use(function (_, res, next) {
    res.header('Access-Control-Allow-Origin', '*')
    res.header('Access-Control-Allow-Headers', 'X-Requested-With')
    res.header('Access-Control-Allow-Headers', 'Content-Type')
    res.header(
        'Access-Control-Allow-Methods',
        'PUT, GET, POST, DELETE, OPTIONS'
    )
    next()
})

const server = createServer(app)

GlobalObject.config.server = server

const chats = GlobalObject.create<Chat[]>([])

for (let i = 1; i <= 10; i++) {
    chats[i - 1] = {
        name: String(i),
        id: String(i),
    }

    const chat = GlobalObject.create<Message[]>([
        {
            author: 'Server',
            text: `Chat ${i} started`,
            time: Date.now(),
        },
    ])

    GlobalObject.send(chat, PORT, `/chat/${i}`)
}

GlobalObject.send(chats, PORT, '/chats')