matrix-rust-bot/src/main.rs
2023-07-07 18:55:53 +02:00

346 lines
12 KiB
Rust

use std::{env, process::exit};
use schmfy::schmfy;
use rand::Rng;
use matrix_sdk::{
config::SyncSettings,
room::Room,
ruma::events::{room::{
member::StrippedRoomMemberEvent,
message::{MessageType, OriginalSyncRoomMessageEvent, RoomMessageEventContent, ForwardThread},
}, relation::Annotation, reaction::ReactionEventContent},
Client,
};
use tokio::time::{sleep, Duration};
#[tokio::main]
async fn main() -> anyhow::Result<()> {
tracing_subscriber::fmt::init();
// parse the command line for homeserver, username and password
let (homeserver_url, username, password) =
match (env::args().nth(1), env::args().nth(2), env::args().nth(3)) {
(Some(a), Some(b), Some(c)) => (a, b, c),
_ => {
eprintln!(
"Usage: {} <homeserver_url> <username> <password>",
env::args().next().unwrap()
);
// exist if missing
exit(1)
}
};
// our actual runner
login_and_sync(homeserver_url, &username, &password).await?;
Ok(())
}
// The core sync loop we have running.
async fn login_and_sync(
homeserver_url: String,
username: &str,
password: &str,
) -> anyhow::Result<()> {
// First, we set up the client.
// Note that when encryption is enabled, you should use a persistent store to be
// able to restore the session with a working encryption setup.
// See the `persist_session` example.
let client = Client::builder()
// We use the convenient client builder to set our custom homeserver URL on it.
.homeserver_url(homeserver_url)
.build()
.await?;
// Then let's log that client in
client
.matrix_auth()
.login_username(username, password)
.initial_device_display_name("getting started bot")
.await?;
// It worked!
println!("logged in as {username}");
// Now, we want our client to react to invites. Invites sent us stripped member
// state events so we want to react to them. We add the event handler before
// the sync, so this happens also for older messages. All rooms we've
// already entered won't have stripped states anymore and thus won't fire
client.add_event_handler(on_stripped_state_member);
// An initial sync to set up state and so our bot doesn't respond to old
// messages. If the `StateStore` finds saved state in the location given the
// initial sync will be skipped in favor of loading state from the store
let sync_token = client.sync_once(SyncSettings::default()).await.unwrap().next_batch;
// now that we've synced, let's attach a handler for incoming room messages, so
// we can react on it
client.add_event_handler(on_room_message);
// since we called `sync_once` before we entered our sync loop we must pass
// that sync token to `sync`
let settings = SyncSettings::default().token(sync_token);
// this keeps state from the server streaming in to the bot via the
// EventHandler trait
client.sync(settings).await?; // this essentially loops until we kill the bot
Ok(())
}
// Whenever we see a new stripped room member event, we've asked our client to
// call this function. So what exactly are we doing then?
async fn on_stripped_state_member(
room_member: StrippedRoomMemberEvent,
client: Client,
room: Room,
) {
if room_member.state_key != client.user_id().unwrap() {
// the invite we've seen isn't for us, but for someone else. ignore
return;
}
// looks like the room is an invited room, let's attempt to join then
if let Room::Invited(room) = room {
// The event handlers are called before the next sync begins, but
// methods that change the state of a room (joining, leaving a room)
// wait for the sync to return the new room state so we need to spawn
// a new task for them.
tokio::spawn(async move {
println!("Autojoining room {}", room.room_id());
let mut delay = 2;
while let Err(err) = room.accept_invitation().await {
// retry autojoin due to synapse sending invites, before the
// invited user can join for more information see
// https://github.com/matrix-org/synapse/issues/4345
eprintln!("Failed to join room {} ({err:?}), retrying in {delay}s", room.room_id());
sleep(Duration::from_secs(delay)).await;
delay *= 2;
if delay > 3600 {
eprintln!("Can't join room {} ({err:?})", room.room_id());
break;
}
}
println!("Successfully joined room {}", room.room_id());
});
}
}
fn schmfy_strip_reply(txt: &str) -> String {
txt.split("\n")
.filter(|line| line.starts_with("> "))
.map(|line| {
let shortened = line.split(">")
.enumerate()
.filter(|(i,_)| *i > 1)
.map(|(_,txt)| txt)
.collect::<Vec<&str>>()
.join(">");
schmfy(shortened.as_str())
})
.collect::<Vec<String>>()
.join("\n")
}
// This fn is called whenever we see a new room message event. You notice that
// the difference between this and the other function that we've given to the
// handler lies only in their input parameters. However, that is enough for the
// rust-sdk to figure out which one to call one and only do so, when
// the parameters are available.
async fn on_room_message(event: OriginalSyncRoomMessageEvent, room: Room) {
// First, we need to unpack the message: We only want messages from rooms we are
// still in and that are regular text messages - ignoring everything else.
let Room::Joined(room) = room else { return };
let MessageType::Text(text_content) = event.clone().content.msgtype else { return };
// full event for e.g. replies
let full_event = event.clone().into_full_event(room.room_id().to_owned());
// here comes the actual "logic": when the bot see's a `!party` in the message,
// it responds
if text_content.body.contains("!party") {
let content = RoomMessageEventContent::text_plain("🎉🎊🥳 let's PARTY!! 🥳🎊🎉");
println!("sending");
room.send(content, None).await.unwrap();
println!("message sent");
}
if text_content.body.contains("!schmfy") && is_allowed_user(event.sender.as_str()) {
match event.content.relates_to {
Some(_) => {
let plain = schmfy_strip_reply(text_content.body.as_str());
let formatted = match text_content.formatted {
Some(formatted) => {
schmfy_strip_reply(formatted.body.as_str())
},
None => {
String::from("")
}
};
let content = RoomMessageEventContent::text_html(plain, formatted)
.make_reply_to(&full_event, ForwardThread::Yes);
room.send(content, None).await.unwrap();
},
None => {
// react on invalid message
let reaction = ReactionEventContent::new(
Annotation::new(
event.event_id.to_owned(),
"WRONG".to_owned()
)
);
room.send(reaction, None).await.unwrap();
}
}
}
if is_allowed_room(room.name()) {
if text_content.body.to_lowercase().contains("timo") {
let reaction = ReactionEventContent::new(
Annotation::new(
event.event_id.to_owned(),
"TIMO".to_owned()
)
);
room.send(reaction, None).await.unwrap();
}
if text_content.body.to_lowercase().contains("jan") {
let reaction = ReactionEventContent::new(
Annotation::new(
event.event_id.to_owned(),
"JAN".to_owned()
)
);
room.send(reaction, None).await.unwrap();
}
if text_content.body.to_lowercase().contains("fabian") {
let reaction = ReactionEventContent::new(
Annotation::new(
event.event_id.to_owned(),
"FABIAN".to_owned()
)
);
room.send(reaction, None).await.unwrap();
}
if text_content.body.to_lowercase().contains("second") || text_content.body.to_lowercase().contains("dennis") {
let reaction = ReactionEventContent::new(
Annotation::new(
event.event_id.to_owned(),
"SECOND".to_owned()
)
);
room.send(reaction, None).await.unwrap();
}
if event.sender.as_str().contains("conduit.rs") {
let reaction = ReactionEventContent::new(
Annotation::new(
event.event_id.to_owned(),
"⚡️".to_owned()
)
);
room.send(reaction, None).await.unwrap();
}
if text_content.body.contains("\\") {
let reaction = ReactionEventContent::new(
Annotation::new(
event.event_id.to_owned(),
text_content.body.replace("\\", "λ").replace("!lambda ","").to_owned()
)
);
room.send(reaction, None).await.unwrap();
}
if text_content.body.contains("!lambda") {
let reaction = ReactionEventContent::new(
Annotation::new(
event.event_id.to_owned(),
"FuPro".to_owned()
)
);
room.send(reaction, None).await.unwrap();
}
}
if is_allowed_room(room.name()) && is_allowed_user(event.sender.as_str()){
if text_content.body.split_whitespace().count() < 2 {
let reaction = ReactionEventContent::new(
Annotation::new(
event.event_id.to_owned(),
schmfy(text_content.body.to_lowercase().as_str())
)
);
room.send(reaction, None).await.unwrap();
} else { /*
let msg = text_content.body
.split_terminator("\n")
.map(|line| {
line
.split_whitespace()
.map(|x| {
if {let mut rng = rand::thread_rng(); rng.gen_range(0..200)} <= x.len()^2 {
schmfy(x.to_lowercase().as_str())
} else {
x.to_lowercase()
}
})
.collect::<Vec<String>>()
.join(" ")
})
.collect::<Vec<String>>()
.join("\n");
let content = RoomMessageEventContent::text_plain(msg)
.make_reply_to(&full_event, ForwardThread::Yes);
room.send(content, None).await.unwrap(); */
}
}
}
fn is_allowed_user(user: &str) -> bool {
return !(
user.contains("bot_")
)
}
fn is_allowed_room(name: Option<String>) -> bool {
let room_name = match name {
Some(name) => {
name
},
_ => {
String::from("")
}
};
if room_name.to_lowercase().contains("spam")
|| room_name.to_lowercase().contains("bot") {
return true
}
false
}