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

const lang = require("../util/en_us.json"); // translate message

function uuidFromIntArray (arr) {
  const buf = Buffer.alloc(16)
  arr.forEach((num, index) => { buf.writeInt32BE(num, index * 4) })
  return buf.toString('hex')
}

function simplify (data) {
  try {
    if (data === undefined) return data;
    function transform (value, type) {
      if (type === 'compound') {
        return Object.keys(value).reduce(function (acc, key) {
          acc[key] = simplify(value[key])
          return acc
        }, {})
      }
      if (type === 'list') {
        return value.value.map(function (v) { return transform(v, value.type) })
      }
      return value
    }
    return transform(data.value, data.type)
  } catch (e) {
	return e;
  }
}

function processNbtMessage (msg) {
  try {
    if (!msg || msg.type === 'end') return null;
    if (typeof msg === 'string') return msg

    const simplified = simplify(msg); // Ensure nbt is defined elsewhere
    const json = JSON.stringify(simplified, (key, val) => {
      if (key === 'id' && Array.isArray(val)) return uuidFromIntArray(val);
      return val;
    });

    return json;
  } catch (e) {
    return e;
  }
}

function inject(bot) {
	
let playerchat = {}; // im think this can fix memory leak.
let systemchat = {};
let profilelesschat = {};
let actionbar = {};


bot.on('action_bar', (packet) => {
	actionbar = {};
	actionbar.message = parseMinecraftMessage(simplify(packet.text));
	actionbar.nocolor_message = parseMinecraftMessageNoColor(simplify(packet.text))
    bot.emit('custom_actionbar', actionbar.message, actionbar, packet);
    bot.emit('custom_allchat', 'actionbar', actionbar.message, actionbar, packet);
});

bot.on('system_chat', (packet) => { // system
  if (packet.isActionBar) return;
  
  systemchat = {};
  systemchat.jsonMsg = simplify(packet.content);
  systemchat.message = parseMinecraftMessage(simplify(packet.content));
  systemchat.nocolor_message = parseMinecraftMessageNoColor(simplify(packet.content));
  
  bot.emit('custom_systemchat', systemchat.message, systemchat, packet);
  bot.emit('custom_allchat', 'system', systemchat.message, systemchat, packet);
  
});


bot.on('profileless_chat', (packet) => { // kinda player_chat

  profilelesschat = {};
  
  profilelesschat.type = packet.type
  
  profilelesschat.formattedMessage = simplify(packet.message);
  profilelesschat.senderName = simplify(packet.name);
  profilelesschat.targetName = simplify(packet.target);

  switch (profilelesschat.type) {
	case 1: // /me
	  profilelesschat.message = parseMinecraftMessage({ "translate": "chat.type.emote", "with": [ profilelesschat.senderName, profilelesschat.formattedMessage ]});
	  profilelesschat.nocolor_msg = parseMinecraftMessageNoColor({ "translate": "chat.type.emote", "with": [ profilelesschat.senderName, profilelesschat.formattedMessage ]});
	  break;
    case 2: // player /tell
      profilelesschat.message = parseMinecraftMessage({ translate: "commands.message.display.incoming", with: [ profilelesschat.senderName, profilelesschat.formattedMessage ], color: "gray", italic: true });
	  profilelesschat.nocolor_msg = parseMinecraftMessageNoColor({ translate: "commands.message.display.incoming", with: [ profilelesschat.senderName, profilelesschat.formattedMessage ], color: "gray", italic: true });
      break;
	case 3: // you /tell
	  profilelesschat.message = parseMinecraftMessage({ translate: "commands.message.display.outgoing", with: [ profilelesschat.targetName, profilelesschat.formattedMessage ], color: "gray", italic: true });
	  profilelesschat.nocolor_msg = parseMinecraftMessageNoColor({ translate: "commands.message.display.outgoing", with: [ profilelesschat.targetName, profilelesschat.formattedMessage ], color: "gray", italic: true });
	  break;
    case 4: // player chat
	  profilelesschat.message = parseMinecraftMessage(profilelesschat.formattedMessage);
	  profilelesschat.nocolor_msg = parseMinecraftMessageNoColor(profilelesschat.formattedMessage);
      break;
    case 5: //  
      profilelesschat.message = parseMinecraftMessage({ translate: 'chat.type.announcement', with: [ profilelesschat.senderName, profilelesschat.formattedMessage ]});
	  profilelesschat.nocolor_msg = parseMinecraftMessageNoColor({ translate: 'chat.type.announcement', with: [ profilelesschat.senderName, profilelesschat.formattedMessage ]});
      break;
    case 6: // player /teammsg
      profilelesschat.message = parseMinecraftMessage({ translate: 'chat.type.team.text', with: [ profilelesschat.targetName, profilelesschat.senderName, profilelesschat.formattedMessage ]});
	  profilelesschat.nocolor_msg = parseMinecraftMessageNoColor({ translate: 'chat.type.team.text', with: [ profilelesschat.targetName, profilelesschat.senderName, profilelesschat.formattedMessage ]});
      break;
	case 7: // you /teammsg
      profilelesschat.message = parseMinecraftMessage({ translate: 'chat.type.team.sent', with: [ profilelesschat.targetName, profilelesschat.senderName, profilelesschat.formattedMessage ]});
	  profilelesschat.nocolor_msg = parseMinecraftMessageNoColor({ translate: 'chat.type.team.sent', with: [ profilelesschat.targetName, profilelesschat.senderName, profilelesschat.formattedMessage ]});
	break;
    default:
      console.log(`Unknown player_chat packet. Type: ${playerchat.type}`);
	  console.log(packet);
      break;
  }
  
  bot.emit('custom_profilelesschat', profilelesschat.message, profilelesschat, packet)
  bot.emit('custom_allchat', 'profileless', profilelesschat.message, profilelesschat, packet)
})


bot.on('player_chat', (packet) => { // player
  playerchat = {};
  
  playerchat.plainMessage = packet.plainMessage;
  playerchat.type = packet.type;
  playerchat.sender = packet.senderUuid;
  
  playerchat.unsignedContent = simplify(packet.unsignedChatContent);
  playerchat.senderName = simplify(packet.networkName);
  playerchat.targetName = simplify(packet.networkTargetName);

  playerchat.nocolor_senderName = parseMinecraftMessageNoColor(simplify(packet.networkName));
  playerchat.nocolor_targetName = parseMinecraftMessageNoColor(simplify(packet.networkTargetName));

  switch (playerchat.type) { // vanish off
	case 1: // /minecraft:me
	  playerchat.message = parseMinecraftMessage({ "translate": "chat.type.emote", "with": [ playerchat.senderName, playerchat.plainMessage ]});
	  playerchat.nocolor_msg = parseMinecraftMessageNoColor({ "translate": "chat.type.emote", "with": [ playerchat.senderName, playerchat.plainMessage ]});
	  break;
    case 2: // player /minecraft:tell
      playerchat.message = parseMinecraftMessage({ translate: "commands.message.display.incoming", with: [ playerchat.senderName, playerchat.plainMessage ], color: "gray", italic: true });
	  playerchat.nocolor_msg = parseMinecraftMessageNoColor({ translate: "commands.message.display.incoming", with: [ playerchat.senderName, playerchat.plainMessage ], color: "gray", italic: true });
      break;
	case 3: // you /minecraft:tell
	  playerchat.message = parseMinecraftMessage({ translate: "commands.message.display.outgoing", with: [ playerchat.targetName, playerchat.plainMessage ], color: "gray", italic: true });
	  playerchat.nocolor_msg = parseMinecraftMessageNoColor({ translate: "commands.message.display.outgoing", with: [ playerchat.targetName, playerchat.plainMessage ], color: "gray", italic: true });
	  break;
    case 4: // player chat
	  playerchat.message = parseMinecraftMessage(playerchat.unsignedContent);
	  playerchat.nocolor_msg = parseMinecraftMessageNoColor(playerchat.unsignedContent);
      break;
    case 5: //  
      playerchat.message = parseMinecraftMessage({ translate: 'chat.type.announcement', with: [ playerchat.senderName, playerchat.plainMessage ]});
	  playerchat.nocolor_msg = parseMinecraftMessageNoColor({ translate: 'chat.type.announcement', with: [ playerchat.senderName, playerchat.plainMessage ]});
      break;
    case 6: // player /minecraft:teammsg || /teammsg
      playerchat.message = parseMinecraftMessage({ translate: 'chat.type.team.text', with: [ playerchat.targetName, playerchat.senderName, playerchat.plainMessage ]});
	  playerchat.nocolor_msg = parseMinecraftMessageNoColor({ translate: 'chat.type.team.text', with: [ playerchat.targetName, playerchat.senderName, playerchat.plainMessage ]});
      break;
	case 7: // you /minecraft:teammsg || /teammsg
      playerchat.message = parseMinecraftMessage({ translate: 'chat.type.team.sent', with: [ playerchat.targetName, playerchat.senderName, playerchat.plainMessage ]});
      playerchat.message = parseMinecraftMessageNoColor({ translate: 'chat.type.team.sent', with: [ playerchat.targetName, playerchat.senderName, playerchat.plainMessage ]});
	break;
    default:
      console.log(`Unknown player_chat packet. Type: ${playerchat.type}`);
	  console.log(packet);
      break;
  }
  bot.emit('custom_playerchat', playerchat.message, playerchat, packet);
  bot.emit('custom_allchat', 'player', playerchat.message, playerchat, packet)
});

}

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) {
  if (component === undefined) return;
  
  function extractText(comp) {
    let text = '';
	if (comp.text && typeof comp.text === 'string' || typeof comp.text === 'number') {
      text += comp.text;
    }
    if (comp[""] && typeof comp[""] === 'string' || typeof comp[""] === 'number') {
      text += comp[""];
    }
	if (comp && typeof comp === 'string' || typeof comp === 'number') {
	  return comp;
    }

    if (comp.extra) {
	  if (!Array.isArray(comp.extra)) comp.extra = [comp.extra]
      comp.extra.forEach(subComp => {
        text += formatfunction(comp, extractText(subComp));
	  });
	}
	
	if (comp.translate) {
		let translateString = lang[comp.translate] || comp.translate;
		let DefaultTranslateString = lang[comp.translate] || comp.translate;
		let DefaultMsg = false;

		if (comp.with) {
			const withArgs = comp.with.map(arg => extractText(arg));
			let usedReplacements = 0;
			translateString = translateString.replace(/thing__placeholder__/g, 'default_thing__placeholder__');

			translateString = translateString.replace(/%s/g, (match, offset, string) => {
				if (offset > 0 && string[offset - 1] === '%') {
					return 's';
				}
				
				if (usedReplacements < withArgs.length) {
					if (translateString.length + formatfunction(comp, withArgs[usedReplacements]).length > 2048) return 'Translate Crash';  // Prevent translate crash
					return `thing__placeholder__${usedReplacements++}`;
				}

				DefaultMsg = true;
				return "%s";
			});

			translateString = translateString.replace(/%(-?\d+)\$s/g, (match, index, stringindex, string) => {
				const argIndex = parseInt(index, 10) - 1;
				
				if (argIndex < 0 || argIndex >= withArgs.length) {
					DefaultMsg = true;
					return match;
				}

				if (stringindex > 0 && string[stringindex - 1] === '%') {
					return match;
				}
				if (translateString.length + formatfunction(comp, withArgs[argIndex]).length > 2048) return 'Translate Crash';  // Prevent translate crash
				return `thing__placeholder__${argIndex}`;
			});

			for (let i = 0; i < withArgs.length; i++) {
				if (translateString.length + formatfunction(comp, withArgs[i]).length > 2048) return 'Translate Crash';  // Prevent translate crash
				translateString = translateString.replace(new RegExp(`thing__placeholder__${i}`, 'g'), (match) => {
					const formattedArg = formatfunction(comp, withArgs[i]);
					return formattedArg;
				});
			}
			translateString = translateString.replace(/default_thing__placeholder__/g, 'thing__placeholder__');
		}
		
		if (DefaultMsg) {
			text += formatfunction(comp, DefaultTranslateString);
		} else {
			text += formatfunction(comp, translateString);
		}
	}
		
	text = parseMinecraftColor(comp.color) + parseMinecraftFormat(comp) + text + ansiFormatCodes['reset'];
    return text;
  }
  
  return extractText(component) + ansiFormatCodes['reset'];
}


function parseMinecraftMessageNoColor(component) {
  if (component === undefined) return;

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

	if (comp.text && typeof comp.text === 'string' || typeof comp.text === 'number') {
      text += comp.text;
    }
    if (comp[""] && typeof comp[""] === 'string' || typeof comp[""] === 'number') {
      text += comp[""];
    }
	if (comp && typeof comp === 'string' || typeof comp === 'number') {
	  return comp;
    }
	
    if (comp.extra) {
	  if (!Array.isArray(comp.extra)) comp.extra = [comp.extra]
      comp.extra.forEach(subComp => {
        text += extractText(subComp);
      });
    }
	
	if (comp.translate) {
		let translateString = lang[comp.translate] || comp.translate;
		let DefaultTranslateString = lang[comp.translate] || comp.translate;
		let DefaultMsg = false;

		if (comp.with) {
			const withArgs = comp.with.map(arg => extractText(arg));
			let usedReplacements = 0;

			translateString = translateString.replace(/thing__placeholder__/g, 'default_thing__placeholder__');
			translateString = translateString.replace(/%s/g, (match, offset, string) => {
				if (offset > 0 && string[offset - 1] === '%') {
					return 's';
				}

				if (usedReplacements < withArgs.length) {
					if (translateString.length + withArgs[usedReplacements].length > 2048) return 'Translate Crash';  // Prevent translate crash
					return `thing__placeholder__${usedReplacements++}`;
				}

				DefaultMsg = true;
				return "%s";
			});

			translateString = translateString.replace(/%(-?\d+)\$s/g, (match, index, stringindex, string) => {
				const argIndex = parseInt(index, 10) - 1;
				
				if (argIndex < 0 || argIndex >= withArgs.length) {
					DefaultMsg = true;
					return match;
				}

				if (stringindex > 0 && string[stringindex - 1] === '%') {
					return match;
				}
				
				if (translateString.length + withArgs[argIndex].length > 2048) return 'Translate Crash';  // Prevent translate crash
				return `thing__placeholder__${argIndex}`;
			});

			for (let i = 0; i < withArgs.length; i++) {
				if (translateString.length + withArgs[i].length > 2048) return 'Translate Crash';  // Prevent translate crash
				translateString = translateString.replace(new RegExp(`thing__placeholder__${i}`, 'g'), (match) => {
					const formattedArg = withArgs[i];
					return formattedArg;
				});
			}
			translateString = translateString.replace(/default_thing__placeholder__/g, 'thing__placeholder__');
		}
		
		if (DefaultMsg) {
			text += DefaultTranslateString;
		} else {
			text += translateString;
		}
	}

    return text;
  }
  
  return extractText(component);
}

function formatfunction(comp, text) {
	if (text === undefined) return '';
	return text = parseMinecraftColor(comp.color) + parseMinecraftFormat(comp) + text + parseMinecraftColor(comp.color) + parseMinecraftFormat(comp);
}

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 = '';
  if (format.bold && format.bold === 1) result += ansiFormatCodes['bold'];
  if (format.italic && format.italic === 1) result += ansiFormatCodes['italic'];
  if (format.underlined && format.underlined === 1) result += ansiFormatCodes['underlined'];
  if (format.strikethrough && format.strikethrough === 1) result += ansiFormatCodes['strikethrough'];
  if (format.obfuscated && format.obfuscated === 1) result += ansiFormatCodes['obfuscated'];
  return result;
}

module.exports = { inject };