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|
use crate::agenda::{self, parse_message, AgendaPoint, Emoji};
use crate::reminder::ReminderType;
use futures::join;
use slack::{error::Error, Event, Message};
use slack_api::{reactions, users};
use std::{
collections::{hash_map::Entry, HashMap},
sync::{Arc, Mutex},
};
use tokio::{
runtime::Runtime,
sync::{mpsc, watch},
task::{spawn, spawn_blocking},
};
use tokio_compat_02::FutureExt;
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,
slack_token: String,
display_names: Arc<Mutex<HashMap<String, String>>>,
}
impl Handler {
fn new(
sender: mpsc::UnboundedSender<AgendaPoint>,
slack_sender: slack::Sender,
slack_channel: Option<String>,
slack_token: String,
) -> Self {
Self {
sender,
slack_sender,
slack_channel: slack_channel.clone(),
print_channels: slack_channel.is_none(),
slack_token,
display_names: Arc::new(Mutex::new(HashMap::new())),
}
}
}
async fn get_or_insert_display_name(
display_names: Arc<Mutex<HashMap<String, String>>>,
user_id: String,
slack_token: &str,
) -> String {
match display_names.lock().unwrap().entry(user_id.clone()) {
Entry::Occupied(o) => o.get().to_string(),
Entry::Vacant(v) => {
let client = slack_api::requests::default_client().unwrap();
if let Some(user) =
users::list(&client, slack_token, &users::ListRequest { presence: None })
.compat()
.await
.unwrap()
.members
.unwrap()
.iter()
.find(|user| user.id.is_some() && user.id.as_deref().unwrap() == user_id)
{
v.insert(user.real_name.as_ref().unwrap().clone())
.to_string()
} else {
user_id
}
}
}
}
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().map(|channels| {
channels
.iter()
.map(|channel| {
format!(
"{}: {}",
channel.name.as_deref().unwrap_or("??"),
channel.id.as_deref().unwrap_or("??"),
)
})
.collect::<Vec<_>>()
})
);
}
}
Event::Message(msg) => {
if let Some(channel) = &self.slack_channel.clone() {
match *msg {
Message::Standard(msg) => {
if msg.channel.is_some() && *channel == msg.channel.unwrap() {
//TODO
let user = match msg.user {
Some(s) => Runtime::new().unwrap().block_on(
get_or_insert_display_name(
Arc::clone(&self.display_names),
s,
&self.slack_token,
)
.compat(),
),
None => "??".to_string(),
};
match parse_message(
&msg.text.unwrap_or("".to_string()),
&user,
|s: String| {
self.slack_sender
.send_message(channel.as_str(), &s)
.unwrap();
},
&self.sender,
) {
Some(Emoji::Ok) => {
let client = slack_api::requests::default_client().unwrap();
Runtime::new()
.unwrap()
.block_on(
reactions::add(
&client,
&self.slack_token,
&reactions::AddRequest {
name: "+1",
file: None,
file_comment: None,
channel: Some(channel.as_str()),
timestamp: Some(msg.ts.unwrap()),
},
)
.compat(),
)
.unwrap();
}
_ => {} // parse_message return
}
}
}
_ => {} // 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>,
reminder: watch::Receiver<ReminderType>,
) {
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 slack_token = token.to_string();
let client = spawn_blocking(move || slack::RtmClient::login(&token).unwrap())
.await
.unwrap();
let mut handler = Handler::new(
sender,
client.sender().clone(),
channel.clone(),
slack_token,
);
let slack_sender = client.sender().clone();
let (_, _, _) = join!(
spawn(receive_from_discord(
receiver,
slack_sender.clone(),
channel.clone()
)),
spawn(handle_reminders(reminder, slack_sender, channel)),
spawn_blocking(move || {
loop {
match client.run(&mut handler) {
Ok(_) => {}
Err(Error::WebSocket(_)) => println!("Restart slack socket"),
Err(e) => {
println!("Error: {}", e);
break;
}
}
}
}),
);
}
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");
}
}
}
async fn handle_reminders(
mut reminder: watch::Receiver<ReminderType>,
sender: slack::Sender,
channel: Option<String>,
) {
if let Some(channel) = channel {
while let Some(reminder) = reminder.recv().await {
match reminder {
ReminderType::OneHour => {
sender.send_typing(&channel).unwrap();
sender
.send_message(
&channel,
&format!("Meeting in one hour!\n{}", agenda::read_agenda()),
)
.unwrap();
}
ReminderType::Void => {}
}
}
}
}
|
