如何在discord.py上阻止文字墙/重复文字

import discord
from discord.ext import commands

intents = discord.Intents.default()
intents.message_content = True

bot = commands.Bot(command_prefix='!', intents=intents)

@bot.event
async def on_message(message):
    if message.author == bot.user:
        return

    # 检查是否是重复文字
    if message.content == message.content.upper():
        await message.delete()
        await message.channel.send(f"{message.author.mention}, 请不要发送文字墙或重复文字。")

    await bot.process_commands(message)

@bot.event
async def on_ready():
    print(f'Bot已登录为 {bot.user.name}')

bot.run('YOUR_BOT_TOKEN')