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use std::{collections::HashMap, convert::TryFrom, sync::Arc};
use crossbeam_channel::{select, Receiver};
use log::{debug, error};
use koibumi_core::{address::Address, identity::Private as PrivateIdentity, message, object};
use crate::{
connection_loop::{Context, ShutdownCommand},
manager::Event as BmEvent,
};
#[derive(Clone, PartialEq, Eq, Hash, Debug)]
pub struct User {
id: Vec<u8>,
subscriptions: Vec<Address>,
private_identities: Vec<PrivateIdentity>,
}
impl User {
pub fn new(
id: Vec<u8>,
subscriptions: Vec<Address>,
private_identities: Vec<PrivateIdentity>,
) -> Self {
Self {
id,
subscriptions,
private_identities,
}
}
}
#[derive(Debug)]
pub enum Event {
User(User),
Msg(message::Object),
Broadcast(message::Object),
AddIdentity {
id: Vec<u8>,
identity: PrivateIdentity,
},
Subscribe {
id: Vec<u8>,
address: Address,
},
}
pub fn manage(
ctx: Arc<Context>,
receiver: Receiver<Event>,
shutdown_receiver: Receiver<ShutdownCommand>,
) {
let bm_event_sender = ctx.bm_event_sender().clone();
let mut users: HashMap<Vec<u8>, User> = HashMap::new();
loop {
select! {
recv(receiver) -> event => match event {
Ok(event) => {
match event {
Event::User(user) => {
users.insert(user.id.clone(), user);
}
Event::Msg(object) => match object::Msg::try_from(object.clone()) {
Ok(msg) => {
for user in users.values() {
for identity in &user.private_identities {
if let Err(_err) = msg.decrypt(object.header(), identity) {
continue;
}
if let Err(_err) = bm_event_sender.send(BmEvent::Msg {
user_id: user.id.clone(),
address: identity.address().clone(),
object: object.clone(),
}) {
continue;
}
}
}
}
Err(err) => {
debug!("{}", err);
}
},
Event::Broadcast(object) => match object::Broadcast::try_from(object.clone()) {
Ok(broadcast) => {
for user in users.values() {
for subscription in &user.subscriptions {
match &broadcast {
object::Broadcast::V4(_) => {
if let Err(_err) =
broadcast.decrypt(object.header(), &subscription)
{
continue;
}
}
object::Broadcast::V5(v5) => {
if subscription.broadcast_tag() != *v5.tag() {
continue;
}
}
}
if let Err(err) = bm_event_sender.send(BmEvent::Broadcast {
user_id: user.id.clone(),
address: subscription.clone(),
object: object.clone(),
}) {
error!("{}", err);
continue;
}
}
}
}
Err(err) => {
debug!("{}", err);
}
},
Event::AddIdentity { id, identity } => {
if let Some(user) = users.get_mut(&id) {
if !user.private_identities.contains(&identity) {
user.private_identities.push(identity);
}
}
}
Event::Subscribe { id, address } => {
if let Some(user) = users.get_mut(&id) {
if !user.subscriptions.contains(&address) {
user.subscriptions.push(address);
}
}
}
}
},
Err(_err) => break,
},
recv(shutdown_receiver) -> _v => break,
}
}
}