ircbot

An async IRC bot framework for Rust powered by Tokio and procedural macros.

use ircbot::{bot, Context, User, Result};

#[bot]
impl MyBot {
    #[command("ping")]
    async fn ping(&self, ctx: Context) -> Result {
        ctx.reply("Pong!")
    }

    #[on(message = "you are *")]
    async fn praise_me(&self, ctx: Context) -> Result {
        ctx.say("Correct.")
    }

    #[on(event = "JOIN")]
    async fn welcome(&self, ctx: Context, user: User) -> Result {
        ctx.say(format!("Welcome, {}!", user.nick))
    }

    #[on(cron = "0 0 9 * * MON-FRI", target = "#general")]
    async fn morning(&self, ctx: Context) -> Result {
        ctx.say("Good morning!")
    }
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    MyBot::new("mybot", "localhost:6667", ["general"])
        .await?
        .main_loop()
        .await
}

Highlights

Proc-macro API — annotate methods with #[command] or #[on]; #[bot] wires everything up.
Typed state — #[bot(state = MyState)] adds a pub state field your handlers can read; mutate it through interior mutability (Mutex/atomics). See examples/stateful_bot.rs.
Flexible triggers — commands (!ping), glob patterns ("you are *"), raw IRC events, mention detection, cron schedules — all with optional target-channel and regex filters.
Reply helpers — ctx.reply(), ctx.say(), ctx.action(), ctx.notice(), ctx.whisper().
Channel control — ctx.join() and ctx.part() to make the bot enter or leave channels from a handler.
Raw escape hatch — ctx.raw() sends any IRC line the helpers don't wrap (MODE, INVITE, …), still sanitized.
Moderation — ctx.set_topic() and ctx.kick() act on the channel the message arrived in.
Message accessors — ctx.nick(), ctx.is_from_self(), ctx.mentions_me() to inspect who sent a message and what it says.
Keepalive & auto-reconnect — periodic PING/PONG monitoring; reconnects and re-joins on drop. If the configured nick is already in use, the bot automatically retries with a suffixed alternative (bot, bot_, …).
Hot reload (Unix) — SIGHUP execs the new binary with the live TCP socket inherited; no reconnect, no missed messages.
Flood protection — token-bucket rate limiter (default: burst 4, 1 msg / 500 ms).
Auto message splitting — long messages are word-wrapped and split within the 512-byte IRC limit.
Output sanitization — \r, \n, \0 stripped from every outgoing message.
Unit-testable — ircbot::testing::TestContext lets you test handlers without a live server.
Structured logging — diagnostics are emitted through tracing; you pick the subscriber, level, and format. Raw IRC traffic is available opt-in on the ircbot::protocol target.

Full API reference: docs.rs/ircbot

Getting started

[dependencies]
ircbot = "0.2"
tokio  = { version = "1", features = ["full"] }

See the basic_bot example and the docs for the complete API, hot-reload guide, testing helpers, and lower-level State / internal APIs.

Logging

The framework emits structured tracing events and installs no subscriber of its own, so verbosity, format, and destination are yours to configure. Raw IRC traffic is available opt-in on the ircbot::protocol target.

See the logging module docs for subscriber setup and the raw-protocol opt-in.

License

MIT

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