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|
use crate::agenda::{
parse_message,
AgendaPoint
};
use futures::join;
use slack::{
Event,
Message,
};
use tokio::{
sync::mpsc,
task::{
spawn,
spawn_blocking,
},
};
const TOKEN: Option<&str> = None;
const CHANNEL: Option<&str> = None;
struct Handler {
sender: mpsc::UnboundedSender<AgendaPoint>,
slack_sender: slack::Sender,
slack_channel: Option<String>,
print_channels: bool,
}
impl Handler {
fn new(
sender: mpsc::UnboundedSender<AgendaPoint>,
slack_sender: slack::Sender,
slack_channel: Option<String>,
) -> Self {
Self {
sender,
slack_sender,
slack_channel: slack_channel.clone(),
print_channels: slack_channel.is_none()
}
}
}
impl slack::EventHandler for Handler {
fn on_event(&mut self, cli: &slack::RtmClient, event: slack::Event) {
match event {
Event::Hello => {
if self.print_channels {
println!("Slack channels found: {:#?}",
cli
.start_response()
.channels
.as_ref()
.and_then(|channels| {
Some(channels
.iter()
.map(|channel| format!("{}: {}",
channel.name.as_ref().unwrap_or(&"??".to_string()), //TODO &"".to_string() ?
channel.id.as_ref().unwrap_or(&"??".to_string()))) //TODO
.collect::<Vec<_>>())
}));
}
}
Event::Message(msg) => {
if let Some(channel) = &self.slack_channel {
match *msg {
Message::Standard(msg) => {
if msg.channel.is_some() && *channel == msg.channel.unwrap() { //TODO
if let Ok(Some(s)) = parse_message(
&msg.text.unwrap_or("".to_string()),
&msg.user.unwrap_or("??".to_string()),
&self.sender,
) {
self.slack_sender.send_message(channel.as_str(), &s).unwrap();
}
}
}
_ => {} // message type
}
}
}
_ => {} // event type
}
}
fn on_close(&mut self, _cli: &slack::RtmClient) {}
fn on_connect(&mut self, _cli: &slack::RtmClient) {}
}
pub async fn handle(
sender: mpsc::UnboundedSender<AgendaPoint>,
receiver: mpsc::UnboundedReceiver<AgendaPoint>,
) {
println!("Setting up Slack");
let token = std::env::var("SLACK_API_TOKEN").unwrap_or_else(|_| TOKEN.expect("Missing slack token").to_string());
let channel = match std::env::var("SLACK_CHANNEL") {
Ok(channel) => Some(channel),
Err(_) => match CHANNEL {
Some(channel) => Some(channel.to_string()),
None => None
}
};
let client = spawn_blocking(move || {
slack::RtmClient::login(&token).unwrap()
}).await.unwrap();
let mut handler = Handler::new(sender, client.sender().clone(), channel.clone());
let slack_sender = client.sender().clone();
let (_, _) = join!(
spawn_blocking(move || {
match client.run(&mut handler) {
Ok(_) => {}
Err(e) => {
println!("Error: {}", e)
}
}
}),
spawn(receive_from_discord(receiver, slack_sender, channel))
);
}
async fn receive_from_discord(
mut receiver: mpsc::UnboundedReceiver<AgendaPoint>,
sender: slack::Sender,
channel: Option<String>,
) {
if let Some(channel) = channel {
while let Some(point) = receiver.recv().await {
//TODO Sending messages is very slow sometimes. Have seen delays
// from 5 up to 20(!) seconds.
sender.send_typing(&channel).unwrap();
sender.send_message(&channel, &point.to_add_message()).unwrap();
println!("Slack message sent");
}
}
}
|
