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use async_trait::async_trait;
use std::sync::Arc;
use tokio::sync::Mutex;
use twilight_model::{channel::{Channel, Message}, id::{marker::ChannelMarker, Id}, util::Timestamp};
use crate::system::types::{System, Member, Response};
use super::SeancePlugin;
use tokio::time::sleep;
use std::time::Duration;
use super::Logger;
pub struct Autoproxy {
current_state: Arc<Mutex<InnerState>>,
}
#[derive(Clone)]
enum InnerState {
Off,
LatchActive { current_member: Member, last_message: Timestamp },
LatchInactive,
Member { current_member: Member },
}
impl Autoproxy {
pub fn new() -> Self {
Self {
current_state: Arc::new(Mutex::new(InnerState::Off))
}
}
}
#[async_trait]
impl<'system> SeancePlugin<'system> for Autoproxy {
fn get_commands(&self) -> Vec<&'static str> {
vec!["auto"]
}
async fn handle_command<'message>(&self, logger: &'system Logger, system: &'system System, message: &'message Message, args: Vec<&'message str>) {
let mut args = args.iter().map(|r| *r);
let first_word = args.next();
match first_word {
Some("off") => *self.current_state.lock().await = InnerState::Off,
Some("latch") => *self.current_state.lock().await = InnerState::LatchInactive,
Some("member") => {
let mention = args.next();
if let Some(member) = system.resolve_mention(mention).await {
logger.log_line(Some(member.discord_token.clone()), "Setting member autoproxy".to_string()).await;
{*self.current_state.lock().await = InnerState::Member { current_member: member.clone() }};
} else {
logger.log_err(None, format!("Unknown user: {}", mention.unwrap_or("[empty string]"))).await;
}
},
Some(other) => {
logger.log_err(None, format!("Unknown autoproxy mode: {other}")).await;
},
None => {
logger.log_err(None, "Must specify autoproxy mode".to_string()).await;
}
};
}
async fn handle_message<'message>(&self, logger: &'system Logger, system: &'system System, message: &'message Message, response: &'message mut Response) {
let starting_state = {self.current_state.lock().await.clone()};
if message.content.starts_with("\\") {
logger.log_line(None, "Skipping proxy".to_string()).await;
if message.content.starts_with("\\\\") {
if let InnerState::LatchActive {current_member: _, last_message: _} = starting_state {
logger.log_line(None, "Unlatching".to_string()).await;
{*self.current_state.lock().await = InnerState::LatchInactive};
logger.log_line(None, "Done".to_string()).await;
}
}
if message.content == "\\\\" {
logger.log_line(None, "Deleting source message".to_string()).await;
}
*response = Response::Noop { delete_source: message.content == "\\\\" };
return
}
if let Response::Noop { delete_source: _ } = response {
let current_state = {self.current_state.lock().await.clone()};
match current_state {
InnerState::Off => return,
InnerState::LatchInactive => return,
InnerState::Member { current_member } => {
logger.log_line(Some(current_member.discord_token.clone()), "Proxying via member mode autoproxy".to_string()).await;
*response = Response::Proxy {
member: current_member.clone(),
content: message.content.clone(),
}
},
InnerState::LatchActive { current_member, last_message: _ } => {
logger.log_line(Some(current_member.discord_token.clone()), "Proxying via autoproxy latch".to_string()).await;
*response = Response::Proxy {
member: current_member.clone(),
content: message.content.clone(),
}
},
}
}
}
async fn post_response<'message>(&self, logger: &'system Logger, system: &'system System, message: &'message Message, channel: Id<ChannelMarker>, response: &'message Response) {
match response {
Response::Proxy { member, content: _ } => {
let current_state = {self.current_state.lock().await.clone()};
match current_state {
InnerState::Off => return,
InnerState::Member { current_member: _ } => return,
InnerState::LatchInactive => {
logger.log_line(Some(member.discord_token.clone()), "Setting autoproxy latch".to_string()).await;
{*self.current_state.lock().await = InnerState::LatchActive {
current_member: member.clone(),
last_message: message.timestamp,
}};
let state_arc = self.current_state.clone();
let sent_member = member.clone();
let sent_timestamp = message.timestamp.clone();
tokio::spawn(async move {
sleep(Duration::from_secs(15 * 60)).await;
let current_state = {state_arc.lock().await.clone()};
if let InnerState::LatchActive { current_member, last_message } = current_state {
if sent_member.discord_token == current_member.discord_token && sent_timestamp.as_micros() == last_message.as_micros() {
{*state_arc.lock().await = InnerState::LatchInactive};
}
}
});
},
InnerState::LatchActive { current_member: _, last_message: _ } => {
logger.log_line(Some(member.discord_token.clone()), "Setting autoproxy latch".to_string()).await;
{*self.current_state.lock().await = InnerState::LatchActive {
current_member: member.clone(),
last_message: message.timestamp,
}};
let state_arc = self.current_state.clone();
let sent_member = member.clone();
let sent_timestamp = message.timestamp.clone();
let logger = logger.clone();
tokio::spawn(async move {
sleep(Duration::from_secs(15 * 60)).await;
let current_state = {state_arc.lock().await.clone()};
logger.log_line(Some(sent_member.discord_token.clone()), "Latch timeout".to_string()).await;
if let InnerState::LatchActive { current_member, last_message } = current_state {
if sent_member.discord_token == current_member.discord_token && sent_timestamp.as_micros() == last_message.as_micros() {
logger.log_line(Some(sent_member.discord_token.clone()), "Latch expired".to_string()).await;
{*state_arc.lock().await = InnerState::LatchInactive};
} else {
logger.log_line(Some(sent_member.discord_token.clone()), "Timeout no longer valid".to_string()).await;
}
}
});
},
}
},
_ => return,
}
}
}
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