A discord bot is very powerful. One can program it to do anything.
1. Go to https://discord.com/developers/applications to create an applicaiton and bot
2. Go to **Bot** tab and enable the privileged Gateway Intents. This is needed for bot to read messages.
3. Go to **OAuth2** tab and select the **bot** scope. Select required permissions (choose administrator to get all permission). Copy the link and open it in a new tab. Select the server you want to add the bot to and click **Authorize**.
4. Go to **Bot** tab and copy the **Token**. The token is used to login to the bot.
## Sample Code
### Python
`pip install -U discord.py`
```python
import discord
class MyClient(discord.Client):
async def on_ready(self):
print(f'Logged on as {self.user}!')
async def on_message(self, message: discord.Message):
print(f'Message from {message.author}: {message.content}')
if message.author.bot:
return;
await message.channel.send("I am bot")
intents = discord.Intents.default()
intents.message_content = True
client = MyClient(intents=intents)
client.run('TOKEN_HERE')
```
### JavaScript
`npm i discord.js`
Note that, JavaScript version requires `GuildMessages` and `Guilds` intents to be enabled, while Python version does not.
```js
const { Client, IntentsBitField } = require("discord.js");
const token = "TOKEN_HERE";
// Create a new client instance
const client = new Client({
intents: [
IntentsBitField.Flags.MessageContent,
IntentsBitField.Flags.GuildMessages,
IntentsBitField.Flags.Guilds,
],
});
// When the client is ready, run this code
client.once("ready", () => {
console.log("Bot is online!");
});
// Listen for messages
client.on("messageCreate", (message) => {
// Ignore messages from bots
if (message.author.bot) return;
// Log the message content to the console
console.log(`Message received: ${message.content}`);
message.channel.send("hey I am bot");
});
// Replace 'YOUR_BOT_TOKEN' with your actual bot token
client.login(token);
```
Use bot to clear all messages in a channel
```js
client.on("messageCreate", (message) => {
// Ignore messages from bots
if (message.author.bot) return;
if (message.content === '!clear') {
message.channel.messages.fetch().then(messages => {
message.channel.bulkDelete(messages);
});
}
});
```
## Reference
- [Discord Bot with Python YouTube Playlist](https://www.youtube.com/playlist?list=PL6gx4Cwl9DGAHdJdtEl0-XiRfPRAvpbSz)