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import React, { useState, useEffect, ChangeEvent } from 'react';
import { useSelector } from 'react-redux';
import { useDispatch } from 'react-redux';
import TextareaAutosize from '@material-ui/core/TextareaAutosize';
import 'emoji-mart/css/emoji-mart.css';
import { Picker } from 'emoji-mart';
import SmileyFace from '@material-ui/icons/SentimentVerySatisfied';
import { StoreState } from '../../reducers';
import { sendMessage, sendPrivateMessage } from '../../actions';
import { SendMessageData, SendPrivateMessageData } from '../../actions/types';
export default function SendMessage() {
// Get State from Redux Store
const { activeServer, activeChannel, activeView, activePMUser } = useSelector((state: StoreState) => state.chat);
const { userName } = useSelector((state: StoreState) => state.user);
const dispatch = useDispatch();
// Local state
const [chatMessage, setChatMessage] = useState('');
const [emojiMenuVisible, setEmojiMenuVisible] = useState(false);
const [placeholderTitle, setPlaceholderTitle] = useState('');
// Check active view to determine where we send our messages
useEffect(() => {
if (activeView === 'servers') {
setPlaceholderTitle(activeChannel.split('-')[0]);
} else if (activeView === 'home') {
setPlaceholderTitle(activePMUser);
}
}, [activeView, activeChannel, activePMUser]);
// Checks is message is valid (not just spaces)
function isValidMessage(msg: string) {
let validMessage = true;
// Check if empty stirng
if (msg.trim() === '') validMessage = false;
return validMessage;
}
// Will format out multiple line breaks to 2 max
function formatMessage(msg: string) {
return msg.replace(/(\r\n|\r|\n){3,}/g, '$1\n\n');
}
// Handles submission of messages
// Dispatches event and sets TextField value to empty
function handleSubmit(message: SendMessageData | SendPrivateMessageData) {
if (isValidMessage(message.msg)) {
message.msg = formatMessage(message.msg);
// Send message to server, or user
if (activeView === 'servers' && message.type === 'channelMessage') {
dispatch(sendMessage(message));
} else if (activeView === 'home' && message.type === 'privateMessage') {
dispatch(sendPrivateMessage(message));
}
setChatMessage('');
} else {
// throw some error
}
}
// Handles enter event to submit message
function handleKeyPress(e: any) {
if (e.key === 'Enter' && !e.shiftKey) {
if (activeView === 'servers')
handleSubmit({
server: activeServer,
channel: activeChannel,
from: userName,
msg: chatMessage,
type: 'channelMessage'
});
else if (activeView === 'home')
handleSubmit({ from: userName, to: activePMUser, msg: chatMessage, type: 'privateMessage' });
}
}
// Handles changes in message box (catches enter to not send new lines. (Must send SHIFT+ENTER))
function handleOnChange(e: React.ChangeEvent<HTMLTextAreaElement>) {
if (e.target.value !== '\n') setChatMessage(e.target.value);
}
// When click emoji, close the menu
function handleEmojiClick(e: any) {
setChatMessage(chatMessage + e.native);
setEmojiMenuVisible(false);
}
// Closes emoji menu when clicked outside the div
window.onclick = (e: any) => {
if (String(e.target.className).includes('send-message-emoji-menu')) setEmojiMenuVisible(false);
};
return (
<React.Fragment>
<div className="send-message-border" />
<div className="send-message-container">
<TextareaAutosize
aria-label="empty textarea"
placeholder={`Message #${placeholderTitle}`}
className="message-text-area"
value={chatMessage}
onChange={e => handleOnChange(e)}
onKeyPress={e => handleKeyPress(e)}
/>
<SmileyFace className="send-message-emoji-button" onClick={() => setEmojiMenuVisible(!emojiMenuVisible)} />
</div>
<div className={emojiMenuVisible ? 'send-message-emoji-menu show' : 'send-message-emoji-menu hide'}>
<div className="emoji-wrapper">
<Picker set="emojione" onSelect={e => handleEmojiClick(e)} />
</div>
</div>
</React.Fragment>
);
}
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