Minecraft-protocol-1.20.4-chat-parser/main/chatparser.js

const lang = require("../util/en_us.json"); // translate message
const regex = /^(.+):\s*\/(.+)$/;

function parseCommand(message) {
    const match = message.match(regex);
    if (match) {
        const username = match[1];
        const command = match[2];
        return { username, command };
    } else {
        return undefined;
    }
}

function inject(bot) {
bot.on('systemChat', (packet) => {
  // console.log(packet)
  const jsonmsg = JSON.parse(packet.formattedMessage);
  const msg = parseMinecraftMessage(packet.formattedMessage);
  const nocolormsg = parseMinecraftMessageNoColor(packet.formattedMessage);
  const cspy = parseCommand(nocolormsg)
  if (jsonmsg === undefined) { // idk, but work
    if (msg !== undefined) bot.emit('custom_systemChat', msg, nocolormsg, false);
  } else {
	if (msg !== undefined) bot.emit('custom_systemChat', msg, nocolormsg, jsonmsg);
  }
  if (cspy !== undefined) bot.emit('custom_commandspy', cspy);
});

bot.on('playerChat', (packet) => {
  let msg, vmsg;
  // console.log(packet)
  // other
  const uuid = packet.sender ? packet.sender : undefined;
  const plainMessage = packet.plainMessage ? packet.plainMessage : undefined;
  // Color
  const SenderName = packet.senderName ? parseMinecraftMessage(packet.senderName) : undefined;
  const TargetName = packet.targetName ? parseMinecraftMessage(packet.targetName) : undefined;
  const formattedMessage = packet.formattedMessage ? parseMinecraftMessage(packet.formattedMessage) : undefined;
  const unsignedContent = packet.unsignedContent ? parseMinecraftMessage(packet.unsignedContent) : undefined;
  // No Color
  const NoColorSenderName = packet.senderName ? parseMinecraftMessageNoColor(packet.senderName) : undefined;
  const NoColorTargetName = packet.targetName ? parseMinecraftMessageNoColor(packet.targetName) : undefined;
  const NoColorformattedMessage = packet.formattedMessage ? parseMinecraftMessageNoColor(packet.formattedMessage) : undefined;
  const NoColorunsignedContent = packet.unsignedContent ? parseMinecraftMessageNoColor(packet.unsignedContent) : undefined;
  switch (packet.type) {
	case 1: // /me text
	  msg = `* ${SenderName} ${formattedMessage}`;
	  break;
    case 2: // someone /tell you text
      msg = `${SenderName} whispers to you: ${formattedMessage}`;
      break;
	case 3: // you /tell someone text
	  msg = `You whisper to ${TargetName}: ${formattedMessage}`;
	  break;
    case 4: // player chat
	  // /sudo and vanish send formattedMessage message
	  // normal unsignedContent
	  vmsg = formattedMessage;
	  msg = unsignedContent;
      break;
    case 5: // /say text
      msg = `[${SenderName}] ${plainMessage ? plainMessage : formattedMessage}`;
      break;
    case 6: // /minecraft:teammsg text
      msg = `${TargetName} <${SenderName}> ${plainMessage}`;
      break;
    default:
      console.log(`Unknown player_chat packet. Type: ${packet.type}`);
	  console.log(packet)
      break;
  }
  if (msg !== undefined) bot.emit('custom_playerChat', msg, uuid, plainMessage, SenderName, TargetName, formattedMessage, unsignedContent, NoColorSenderName, NoColorTargetName, NoColorformattedMessage, NoColorunsignedContent);
  if (vmsg !== undefined) bot.emit('custom_systemChat', vmsg, "", "");
});

const ansiColorCodes = {
  '§0': '\x1B[30m', '§1': '\x1B[34m', '§2': '\x1B[32m', '§3': '\x1B[36m', 
  '§4': '\x1B[31m', '§5': '\x1B[35m', '§6': '\x1B[33m', '§7': '\x1B[37m', 
  '§8': '\x1B[90m', '§9': '\x1B[94m', '§a': '\x1B[92m', '§b': '\x1B[96m', 
  '§c': '\x1B[91m', '§d': '\x1B[95m', '§e': '\x1B[93m', '§f': '\x1B[97m', 
  'black': '\x1B[30m', 'dark_blue': '\x1B[34m', 'dark_green': '\x1B[32m', 
  'dark_aqua': '\x1B[36m', 'dark_red': '\x1B[31m', 'dark_purple': '\x1B[35m', 
  'gold': '\x1B[33m', 'gray': '\x1B[37m', 'dark_gray': '\x1B[90m', 'blue': '\x1B[94m', 
  'green': '\x1B[92m', 'aqua': '\x1B[96m', 'red': '\x1B[91m', 'light_purple': '\x1B[95m', 
  'yellow': '\x1B[93m', 'white': '\x1B[97m'
};

const ansiFormatCodes = {
  '§l': '\x1B[1m',  '§o': '\x1B[3m',  '§n': '\x1B[4m',  '§m': '\x1B[9m', '§k': '\x1B[5m',  '§r': '\x1B[0m',
  'bold': '\x1B[1m', 'italic': '\x1B[3m', 'underlined': '\x1B[4m', 'strikethrough': '\x1B[9m', 'obfuscated': '\x1B[5m', 'reset': '\x1B[0m',
};

function parseMinecraftMessage(component) {
  let jsonComponent;
  try {
	jsonComponent = JSON.parse(component);
  } catch (e) {
	console.error("Invalid JSON format:", component);
	return '';
  }

  function extractText(comp) {
    let text = '';
	if (comp.text) {
      text += comp.text;
    }
    if (comp[""]) {
      text += comp[""]; // after 1337 years, i found issue at here
    }
	if (typeof comp === 'string' || typeof comp === 'number') {
      return comp;
    }

    if (comp.extra) {
      comp.extra.forEach(subComp => {
        text += ansiFormatCodes['reset'] + parseMinecraftColor(comp.color) + parseMinecraftFormat(comp) + extractText(subComp) + parseMinecraftColor(comp.color) + parseMinecraftFormat(comp); // it must have better way, but i lazy.
		});
	}    
	
	if (comp.translate) {
	  let translateString = lang[comp.translate] || comp.translate;
		if (comp.with) {
			const withArgs = comp.with.map(arg => extractText(arg));
			withArgs.forEach((arg, index) => {
			  if (arg.length > 10000) return translateString = ''; // anti tellraw translate crash
			  translateString = translateString.replace('%s', arg + parseMinecraftColor(comp.color) + parseMinecraftFormat(comp)); // i need make formatfunction2(comp, text) ?
			  const placeholder = new RegExp(`%${index + 1}\\$s`, 'g'); // create tellraw translate crash
			  translateString = translateString.replace(placeholder, arg + parseMinecraftColor(comp.color) + parseMinecraftFormat(comp));
			  });
		}	  
	  text += translateString;
	}
	
	text = formatfunction(comp, text);
	
    return text;
  }
 
  jsonComponent = extractText(jsonComponent);
  
  return jsonComponent + ansiFormatCodes['reset'];
  
}


function formatfunction(comp, text) {
	return text = parseMinecraftColor(comp.color) + parseMinecraftFormat(comp) + text + ansiFormatCodes['reset'];
}

function parseMinecraftColor(color) {
  if (color && ansiColorCodes[color] && !color.startsWith('#')) {
    return ansiColorCodes[color];
  } else if (color && color.startsWith('#')) {
    const hexRegex = /#?([a-fA-F\d]{2})([a-fA-F\d]{2})([a-fA-F\d]{2})/;
    const hexCodes = hexRegex.exec(color);
    if (hexCodes) {
      const red = parseInt(hexCodes[1], 16);
      const green = parseInt(hexCodes[2], 16);
      const blue = parseInt(hexCodes[3], 16);
      const ansiColor = `\u001b[38;2;${red};${green};${blue}m`;
      return ansiColor;
    }
  } else {
    return '';
  }
}

function parseMinecraftFormat(format) {
  let result = '';
  console.log(format)
  if (format.bold) result += ansiFormatCodes['bold'];
  if (format.italic) result += ansiFormatCodes['italic'];
  if (format.underlined) result += ansiFormatCodes['underlined'];
  if (format.strikethrough) result += ansiFormatCodes['strikethrough'];
  if (format.obfuscated) result += ansiFormatCodes['obfuscated'];
  return result;
}


function parseMinecraftMessageNoColor(component) {
  let jsonComponent;
  try {
	jsonComponent = JSON.parse(component);
  } catch (e) {
    console.error("Invalid JSON format:", component);
  }

  function extractText(comp) {
    let text = '';

	if (comp.text) {
      text += comp.text;
    }  
    if (comp[""]) {
      text += extractText(comp[""]);
    }
	if (typeof comp === 'string' || typeof comp === 'number') {
      text += comp;
    }
    if (comp.extra) {
      comp.extra.forEach(subComp => {
        text += extractText(subComp);
      });
    }
	if (comp.translate) {
	  let translateString = lang[comp.translate] || comp.translate;
	  if (comp.with) {
		const withArgs = comp.with.map(arg => extractText(arg));
		withArgs.forEach((arg, index) => {
		  if (arg.length > 10000) return translateString = ''; // anti tellraw translate crash
		  translateString = translateString.replace('%s', arg);
		  const placeholder = new RegExp(`%${index + 1}\\$s`, 'g');
		  translateString = translateString.replace(placeholder, arg);

		});
	  }
	  text += translateString;
	}

    return text;
  }

  return extractText(jsonComponent);
}

}

module.exports = inject;