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App.js
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App.js
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import React, { useState, useCallback, useEffect } from 'react'
import { GiftedChat } from 'react-native-gifted-chat'
import PubNub from 'pubnub';
import { PubNubProvider, usePubNub } from 'pubnub-react';
const pubnub = new PubNub({
publishKey: 'pub-c-ad792232-e9fb-48b3-ad69-c63d62f95bc9',
subscribeKey: 'sub-c-9245d3ec-4d41-11eb-a73a-1eec528e8f1f',
uuid: 'myUniqueUUID'
});
function App() {
return (
<PubNubProvider client={pubnub}>
<Chat />
</PubNubProvider>
);
}
function Chat() {
const pubnub = usePubNub();
const [channels] = useState(['awesome-channel']);
const [messages, addMessage] = useState([]);
const [message, setMessage] = useState('');
const handleMessage = event => {
const message = event.message;
if (typeof message === 'string' || message.hasOwnProperty('text')) {
const text = message.text || message;
addMessage(messages => [...messages, text]);
}
};
const sendMessage = message => {
if (message) {
pubnub
.publish({ channel: channels[0], message })
.then(() => setMessage(''));
}
};
useEffect(() => {
pubnub.addListener({ message: handleMessage });
pubnub.subscribe({ channels });
}, [pubnub, channels]);
return (
<div style={pageStyles}>
<div style={chatStyles}>
<div style={headerStyles}>React Chat Example</div>
<div style={listStyles}>
{messages.map((message, index) => {
return (
<div key={`message-${index}`} style={messageStyles}>
{message}
</div>
);
})}
</div>
<div style={footerStyles}>
<input
type="text"
style={inputStyles}
placeholder="Type your message"
value={message}
onKeyPress={e => {
if (e.key !== 'Enter') return;
sendMessage(message);
}}
onChange={e => setMessage(e.target.value)}
/>
<button
style={buttonStyles}
onClick={e => {
e.preventDefault();
sendMessage(message);
}}
>
Send Message
</button>
</div>
</div>
</div>
);
}
const pageStyles = {
alignItems: 'center',
background: '#282c34',
display: 'flex',
justifyContent: 'center',
minHeight: '100vh',
};
const chatStyles = {
display: 'flex',
flexDirection: 'column',
height: '50vh',
width: '50%',
};
const headerStyles = {
background: '#323742',
color: 'white',
fontSize: '1.4rem',
padding: '10px 15px',
};
const listStyles = {
alignItems: 'flex-start',
backgroundColor: 'white',
display: 'flex',
flexDirection: 'column',
flexGrow: 1,
overflow: 'auto',
padding: '10px',
};
const messageStyles = {
backgroundColor: '#eee',
borderRadius: '5px',
color: '#333',
fontSize: '1.1rem',
margin: '5px',
padding: '8px 15px',
};
const footerStyles = {
display: 'flex',
};
const inputStyles = {
flexGrow: 1,
fontSize: '1.1rem',
padding: '10px 15px',
};
const buttonStyles = {
fontSize: '1.1rem',
padding: '10px 15px',
};
export default App;