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//! Matrix channel — Matrix protocol via client-server API
use async_trait::async_trait;
use serde_json::Value;
use tokio::sync::mpsc;
use super::traits::*;
pub struct MatrixChannel {
homeserver: String,
access_token: String,
room_id: Option<String>,
}
impl MatrixChannel {
pub fn new(homeserver: impl Into<String>, access_token: impl Into<String>) -> Self {
Self {
homeserver: homeserver.into().trim_end_matches('/').to_string(),
access_token: access_token.into(),
room_id: None,
}
}
pub fn with_room(mut self, room_id: impl Into<String>) -> Self {
self.room_id = Some(room_id.into());
self
}
}
#[async_trait]
impl Channel for MatrixChannel {
fn name(&self) -> &str {
"matrix"
}
async fn start(&mut self) -> anyhow::Result<mpsc::Receiver<IncomingMessage>> {
let (tx, rx) = mpsc::channel(32);
let homeserver = self.homeserver.clone();
let token = self.access_token.clone();
tokio::spawn(async move {
let client = crate::http::shared();
let mut since = String::new();
loop {
let mut url = format!("{}/_matrix/client/r0/sync?timeout=30000", homeserver);
if !since.is_empty() {
url.push_str(&format!("&since={}", since));
}
let resp = client
.get(&url)
.header("Authorization", format!("Bearer {}", token))
.send()
.await;
if let Ok(resp) = resp {
if let Ok(data) = resp.json::<Value>().await {
if let Some(next) = data["next_batch"].as_str() {
since = next.to_string();
}
if let Some(rooms) = data["rooms"]["join"].as_object() {
for (room_id, room) in rooms {
if let Some(events) = room["timeline"]["events"].as_array() {
for event in events {
if event["type"].as_str() != Some("m.room.message") {
continue;
}
let content = &event["content"];
let text =
content["body"].as_str().unwrap_or("").to_string();
if text.is_empty() {
continue;
}
let incoming = IncomingMessage {
id: event["event_id"]
.as_str()
.unwrap_or("")
.to_string(),
sender_id: event["sender"]
.as_str()
.unwrap_or("")
.to_string(),
sender_name: None,
chat_id: room_id.clone(),
text,
is_group: true,
reply_to: None,
timestamp: chrono::Utc::now(),
};
let _ = tx.send(incoming).await;
}
}
}
}
}
}
}
});
Ok(rx)
}
async fn send(&self, message: OutgoingMessage) -> anyhow::Result<Option<String>> {
let client = crate::http::shared();
let txn_id = uuid::Uuid::new_v4().to_string();
let body = serde_json::json!({
"msgtype": "m.text",
"body": &message.text,
});
client
.put(format!(
"{}/_matrix/client/r0/rooms/{}/send/m.room.message/{}",
self.homeserver, message.chat_id, txn_id
))
.header("Authorization", format!("Bearer {}", self.access_token))
.json(&body)
.send()
.await?;
Ok(None)
}
async fn stop(&mut self) -> anyhow::Result<()> {
Ok(())
}
}