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<h1 class="page-title">Source: core/chat.js</h1>
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<pre class="prettyprint source linenums"><code>/**
* @author Marzavec ( https://github.com/marzavec )
* @summary Send chat messages
* @version 1.0.0
* @description Broadcasts passed `text` field to the calling users channel
* @module chat
*/
import {
isAdmin,
isModerator,
} from '../utility/_UAC.js';
/**
* Check and trim string provided by remote client
* @param {string} text - Subject string
* @private
* @todo Move into utility module
* @return {string|boolean}
*/
const parseText = (text) => {
// verifies user input is text
if (typeof text !== 'string') {
return false;
}
let sanitizedText = text;
// strip newlines from beginning and end
sanitizedText = sanitizedText.replace(/^\s*\n|^\s+$|\n\s*$/g, '');
// replace 3+ newlines with just 2 newlines
sanitizedText = sanitizedText.replace(/\n{3,}/g, '\n\n');
return sanitizedText;
};
/**
* Executes when invoked by a remote client
* @param {Object} env - Enviroment object with references to core, server, socket &amp; payload
* @public
* @return {void}
*/
export async function run({
core, server, socket, payload,
}) {
// check user input
const text = parseText(payload.text);
if (!text) {
// lets not send objects or empty text, yea?
return server.police.frisk(socket.address, 13);
}
// check for spam
const score = text.length / 83 / 4;
if (server.police.frisk(socket.address, score)) {
return server.reply({
cmd: 'warn', // @todo Add numeric error code as `id`
text: 'You are sending too much text. Wait a moment and try again.\nPress the up arrow key to restore your last message.',
channel: socket.channel, // @todo Multichannel
}, socket);
}
// build chat payload
const outgoingPayload = {
cmd: 'chat',
nick: socket.nick, /* @legacy */
uType: socket.uType, /* @legacy */
userid: socket.userid,
channel: socket.channel,
text,
level: socket.level,
};
if (isAdmin(socket.level)) {
outgoingPayload.admin = true;
} else if (isModerator(socket.level)) {
outgoingPayload.mod = true;
}
if (socket.trip) {
outgoingPayload.trip = socket.trip; /* @legacy */
}
if (socket.color) {
outgoingPayload.color = socket.color;
}
// broadcast to channel peers
server.broadcast(outgoingPayload, { channel: socket.channel });
// stats are fun
core.stats.increment('messages-sent');
return true;
}
/**
* Automatically executes once after server is ready to register this modules hooks
* @param {Object} server - Reference to server enviroment object
* @public
* @return {void}
*/
export function initHooks(server) {
server.registerHook('in', 'chat', this.commandCheckIn.bind(this), 20);
server.registerHook('in', 'chat', this.finalCmdCheck.bind(this), 254);
}
/**
* Executes every time an incoming chat command is invoked;
* checks for miscellaneous '/' based commands
* @param {Object} env - Enviroment object with references to core, server, socket &amp; payload
* @public
* @return {{Object|boolean|string}} Object = same/altered payload,
* false = suppress action,
* string = error
*/
export function commandCheckIn({ server, socket, payload }) {
if (typeof payload.text !== 'string') {
return false;
}
if (payload.text.startsWith('/myhash')) {
server.reply({
cmd: 'info',
text: `Your hash: ${socket.hash}`,
channel: socket.channel, // @todo Multichannel
}, socket);
return false;
}
return payload;
}
/**
* Executes every time an incoming chat command is invoked;
* assumes a failed chat command invocation and will reject with notice
* @param {Object} env - Enviroment object with references to core, server, socket &amp; payload
* @public
* @return {{Object|boolean|string}} Object = same/altered payload,
* false = suppress action,
* string = error
*/
export function finalCmdCheck({ server, socket, payload }) {
if (typeof payload.text !== 'string') {
return false;
}
if (!payload.text.startsWith('/')) {
return payload;
}
if (payload.text.startsWith('//')) {
payload.text = payload.text.substr(1); // eslint-disable-line no-param-reassign
return payload;
}
server.reply({
cmd: 'warn', // @todo Add numeric error code as `id`
text: `Unknown command: ${payload.text}`,
channel: socket.channel, // @todo Multichannel
}, socket);
return false;
}
/**
* The following payload properties are required to invoke this module:
* "text"
* @public
* @typedef {Array} chat/requiredData
*/
export const requiredData = ['text'];
/**
* Module meta information
* @public
* @typedef {Object} chat/info
* @property {string} name - Module command name
* @property {string} category - Module category name
* @property {string} description - Information about module
* @property {string} usage - Information about module usage
*/
export const info = {
name: 'chat',
category: 'core',
description: 'Broadcasts passed `text` field to the calling users channel',
usage: `
API: { cmd: 'chat', text: '&lt;text to send>' }
Text: Uuuuhm. Just kind type in that little box at the bottom and hit enter.\n
Bonus super secret hidden commands:
/myhash`,
};
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