/
SendMessage.tsx
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/
SendMessage.tsx
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import {
FormControl,
InputLabel,
makeStyles,
MenuItem,
Select,
TextField,
} from '@material-ui/core';
import React, { ChangeEvent, useState, KeyboardEvent } from 'react';
import { Waku, WakuMessage } from 'js-waku';
import { DirectMessage, encode } from './wire';
import { encryptMessage } from '../crypto';
import { DirectMessageContentTopic } from '../InitWaku';
const useStyles = makeStyles((theme) => ({
formControl: {
margin: theme.spacing(1),
minWidth: 120,
},
selectEmpty: {
marginTop: theme.spacing(2),
},
}));
export interface Props {
waku: Waku | undefined;
// address, public key
recipients: Map<string, string>;
}
export default function SendMessage({ waku, recipients }: Props) {
const classes = useStyles();
const [recipient, setRecipient] = useState<string>('');
const [message, setMessage] = useState<string>();
const handleRecipientChange = (
event: ChangeEvent<{ name?: string; value: unknown }>
) => {
setRecipient(event.target.value as string);
};
const handleMessageChange = (event: ChangeEvent<HTMLInputElement>) => {
setMessage(event.target.value);
};
const items = Array.from(recipients.keys()).map((recipient) => {
return (
<MenuItem key={recipient} value={recipient}>
{recipient}
</MenuItem>
);
});
const keyDownHandler = async (event: KeyboardEvent<HTMLInputElement>) => {
if (
event.key === 'Enter' &&
!event.altKey &&
!event.ctrlKey &&
!event.shiftKey
) {
if (!waku) return;
if (!recipient) return;
if (!message) return;
const publicKey = recipients.get(recipient);
if (!publicKey) return;
sendMessage(waku, recipient, publicKey, message, (res) => {
if (res) {
console.log('callback called with', res);
setMessage('');
}
});
}
};
return (
<div
style={{
display: 'flex',
alignItems: 'center',
flexWrap: 'wrap',
}}
>
<FormControl className={classes.formControl}>
<InputLabel id="select-recipient-label">Recipient</InputLabel>
<Select
labelId="select-recipient"
id="select-recipient"
value={recipient}
onChange={handleRecipientChange}
>
{items}
</Select>
</FormControl>
<TextField
id="message-input"
label="Message"
variant="filled"
onChange={handleMessageChange}
onKeyDown={keyDownHandler}
value={message}
/>
</div>
);
}
async function encodeEncryptedWakuMessage(
message: string,
publicKey: string,
address: string
): Promise<WakuMessage> {
const encryptedMsg = await encryptMessage(publicKey, message);
const directMsg: DirectMessage = {
toAddress: address,
encMessage: encryptedMsg,
};
const payload = encode(directMsg);
return WakuMessage.fromBytes(payload, DirectMessageContentTopic);
}
function sendMessage(
waku: Waku,
recipientAddress: string,
recipientPublicKey: string,
message: string,
callback: (res: boolean) => void
) {
encodeEncryptedWakuMessage(message, recipientPublicKey, recipientAddress)
.then((msg) => {
console.log('pushing');
waku.lightPush
.push(msg)
.then((res) => {
console.log('Message sent', res);
callback(res ? res.isSuccess : false);
})
.catch((e) => {
console.error('Failed to send message', e);
callback(false);
});
})
.catch((e) => {
console.error('Cannot encode & encrypt message', e);
callback(false);
});
}