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use std::collections::HashMap;
use chrono::Utc;
use crate::state::buffer::{
ActivityLevel, Buffer, BufferType, Message, MessageType, make_buffer_id,
};
use super::App;
impl App {
#[allow(clippy::too_many_lines)]
pub(crate) fn handle_dcc_event(&mut self, ev: crate::dcc::DccEvent) {
use crate::dcc::DccEvent;
match ev {
DccEvent::IncomingRequest {
nick,
conn_id,
addr,
port,
passive_token,
ident,
host,
} => {
// Notify scripts before any default handling; suppression skips
// the accept-prompt and auto-accept logic entirely.
{
use crate::scripting::api::events;
let mut params = HashMap::new();
params.insert("connection_id".to_string(), conn_id.clone());
params.insert("nick".to_string(), nick.clone());
params.insert("ip".to_string(), addr.to_string());
params.insert("port".to_string(), port.to_string());
if self.emit_script_event(events::DCC_CHAT_REQUEST, params) {
return;
}
}
// Cross-request auto-allow: if we already have a Listening DCC
// to this nick (we initiated), tear down our listener and
// auto-accept their request instead.
let mut auto = false;
let our_listening_id = self
.dcc
.records
.iter()
.find(|(_, r)| {
r.nick.eq_ignore_ascii_case(&nick)
&& matches!(r.state, crate::dcc::types::DccState::Listening)
})
.map(|(id, _)| id.clone());
if let Some(lid) = our_listening_id {
self.dcc.close_by_id(&lid);
self.dcc.chat_senders.remove(&lid);
auto = true;
}
// Check hostmask auto-accept
if !auto {
auto = self.dcc.should_auto_accept(&nick, &ident, &host, port);
}
if self.dcc.records.len() >= self.dcc.max_connections {
crate::commands::helpers::add_local_event(
self,
&format!("DCC CHAT from {nick} rejected: max connections reached"),
);
return;
}
let id = self.dcc.generate_id(&nick);
let nick_for_record = nick.clone();
let record = crate::dcc::types::DccRecord {
id: id.clone(),
dcc_type: crate::dcc::types::DccType::Chat,
nick: nick_for_record,
conn_id,
addr,
port,
state: crate::dcc::types::DccState::WaitingUser,
passive_token,
created: std::time::Instant::now(),
started: None,
bytes_transferred: 0,
mirc_ctcp: true,
ident,
host,
};
self.dcc.records.insert(id, record);
if auto {
crate::commands::handlers_dcc::cmd_dcc(self, &["chat".to_string(), nick]);
} else {
crate::commands::helpers::add_local_event(
self,
&format!(
"DCC CHAT request from {nick} ({addr}:{port}) — \
use /dcc chat {nick} to accept"
),
);
}
}
DccEvent::ChatConnected { id } => {
let nick = {
let Some(record) = self.dcc.records.get_mut(&id) else {
return;
};
record.state = crate::dcc::types::DccState::Connected;
record.started = Some(std::time::Instant::now());
record.nick.clone()
};
let conn_id = self
.dcc
.records
.get(&id)
.map(|r| r.conn_id.clone())
.unwrap_or_default();
let buf_name = format!("={nick}");
let buffer_id = make_buffer_id(&conn_id, &buf_name);
if !self.state.buffers.contains_key(&buffer_id) {
self.state.add_buffer(Buffer {
id: buffer_id.clone(),
connection_id: conn_id.clone(),
buffer_type: BufferType::DccChat,
name: buf_name,
messages: std::collections::VecDeque::new(),
activity: ActivityLevel::None,
unread_count: 0,
last_read: chrono::Utc::now(),
topic: None,
topic_set_by: None,
users: std::collections::HashMap::new(),
modes: None,
mode_params: None,
list_modes: std::collections::HashMap::new(),
last_speakers: Vec::new(),
peer_handle: None,
});
}
self.load_backlog(&buffer_id);
self.state.set_active_buffer(&buffer_id);
let msg_id = self.state.next_message_id();
self.state.add_message(
&buffer_id,
Message {
id: msg_id,
timestamp: Utc::now(),
message_type: MessageType::Event,
nick: None,
nick_mode: None,
text: format!("DCC CHAT connection established with {nick}"),
highlight: false,
event_key: None,
event_params: None,
log_msg_id: None,
log_ref_id: None,
tags: None,
},
);
{
use crate::scripting::api::events;
let mut params = HashMap::new();
params.insert("connection_id".to_string(), conn_id);
params.insert("nick".to_string(), nick);
self.emit_script_event(events::DCC_CHAT_CONNECTED, params);
}
}
DccEvent::ChatMessage { id, text } => {
let (nick, conn_id) = {
let Some(record) = self.dcc.records.get_mut(&id) else {
return;
};
record.bytes_transferred += text.len() as u64;
(record.nick.clone(), record.conn_id.clone())
};
let buf_name = format!("={nick}");
let buffer_id = make_buffer_id(&conn_id, &buf_name);
let suppressed = {
use crate::scripting::api::events;
let mut params = HashMap::new();
params.insert("connection_id".to_string(), conn_id);
params.insert("nick".to_string(), nick.clone());
params.insert("text".to_string(), text.clone());
self.emit_script_event(events::DCC_CHAT_MESSAGE, params)
};
if !suppressed {
let msg_id = self.state.next_message_id();
self.state.add_message_with_activity(
&buffer_id,
Message {
id: msg_id,
timestamp: Utc::now(),
message_type: MessageType::Message,
nick: Some(nick),
nick_mode: None,
text,
highlight: false,
event_key: None,
event_params: None,
log_msg_id: None,
log_ref_id: None,
tags: None,
},
ActivityLevel::Mention,
);
}
}
DccEvent::ChatAction { id, text } => {
let (nick, conn_id) = {
let Some(record) = self.dcc.records.get_mut(&id) else {
return;
};
record.bytes_transferred += text.len() as u64;
(record.nick.clone(), record.conn_id.clone())
};
let buf_name = format!("={nick}");
let buffer_id = make_buffer_id(&conn_id, &buf_name);
let msg_id = self.state.next_message_id();
self.state.add_message_with_activity(
&buffer_id,
Message {
id: msg_id,
timestamp: Utc::now(),
message_type: MessageType::Action,
nick: Some(nick),
nick_mode: None,
text,
highlight: false,
event_key: None,
event_params: None,
log_msg_id: None,
log_ref_id: None,
tags: None,
},
ActivityLevel::Mention,
);
}
DccEvent::ChatClosed { id, reason } => {
let record = self.dcc.close_by_id(&id);
self.dcc.chat_senders.remove(&id);
if let Some(record) = record {
let buf_name = format!("={}", record.nick);
let buffer_id = make_buffer_id(&record.conn_id, &buf_name);
let reason_str = reason
.as_deref()
.map_or(String::new(), |r| format!(" ({r})"));
{
use crate::scripting::api::events;
let mut params = HashMap::new();
params.insert("connection_id".to_string(), record.conn_id.clone());
params.insert("nick".to_string(), record.nick.clone());
params.insert(
"reason".to_string(),
reason.as_deref().unwrap_or("").to_string(),
);
self.emit_script_event(events::DCC_CHAT_CLOSED, params);
}
let msg_id = self.state.next_message_id();
self.state.add_message(
&buffer_id,
Message {
id: msg_id,
timestamp: Utc::now(),
message_type: MessageType::Event,
nick: None,
nick_mode: None,
text: format!("DCC CHAT with {} closed{reason_str}", record.nick),
highlight: false,
event_key: None,
event_params: None,
log_msg_id: None,
log_ref_id: None,
tags: None,
},
);
}
}
DccEvent::ChatError { id, error } => {
self.dcc.close_by_id(&id);
self.dcc.chat_senders.remove(&id);
crate::commands::helpers::add_local_event(self, &format!("DCC error: {error}"));
}
}
}
}