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695//! AT Protocol (Bluesky) channel adapter.
//!
//! Uses the AT Protocol (atproto) XRPC API for authentication, posting, and
//! polling notifications. Session creation uses `com.atproto.server.createSession`
//! with identifier + app password. Posts are created via
//! `com.atproto.repo.createRecord` with the `app.bsky.feed.post` lexicon.
use crate::types::{
split_message, ChannelAdapter, ChannelContent, ChannelMessage, ChannelType, ChannelUser,
};
use async_trait::async_trait;
use chrono::Utc;
use futures::Stream;
use std::collections::HashMap;
use std::pin::Pin;
use std::sync::Arc;
use std::time::{Duration, Instant};
use tokio::sync::{mpsc, watch, RwLock};
use tracing::{info, warn};
use zeroize::Zeroizing;
/// Default Bluesky PDS service URL.
const DEFAULT_SERVICE_URL: &str = "https://bsky.social";
/// Maximum Bluesky post length (grapheme clusters).
const MAX_MESSAGE_LEN: usize = 300;
/// Notification poll interval in seconds.
const POLL_INTERVAL_SECS: u64 = 5;
/// Session refresh buffer — refresh 5 minutes before actual expiry.
const SESSION_REFRESH_BUFFER_SECS: u64 = 300;
/// AT Protocol (Bluesky) adapter.
///
/// Inbound mentions are received by polling the `app.bsky.notification.listNotifications`
/// endpoint. Outbound posts are created via `com.atproto.repo.createRecord` with
/// the `app.bsky.feed.post` record type. Session tokens are cached and refreshed
/// automatically.
pub struct BlueskyAdapter {
/// AT Protocol identifier (handle or DID, e.g., "alice.bsky.social").
identifier: String,
/// SECURITY: App password for session creation, zeroized on drop.
app_password: Zeroizing<String>,
/// PDS service URL (default: `"https://bsky.social"`).
service_url: String,
/// HTTP client for API calls.
client: reqwest::Client,
/// Shutdown signal.
shutdown_tx: Arc<watch::Sender<bool>>,
shutdown_rx: watch::Receiver<bool>,
/// Cached session (access_jwt, refresh_jwt, did, expiry).
session: Arc<RwLock<Option<BlueskySession>>>,
}
/// Cached Bluesky session data.
struct BlueskySession {
/// JWT access token for authenticated requests.
access_jwt: String,
/// JWT refresh token for session renewal.
refresh_jwt: String,
/// The DID of the authenticated account.
did: String,
/// When this session was created (for expiry tracking).
created_at: Instant,
}
impl BlueskyAdapter {
/// Create a new Bluesky adapter with the default service URL.
///
/// # Arguments
/// * `identifier` - AT Protocol handle (e.g., "alice.bsky.social") or DID.
/// * `app_password` - App password (not the main account password).
pub fn new(identifier: String, app_password: String) -> Self {
Self::with_service_url(identifier, app_password, DEFAULT_SERVICE_URL.to_string())
}
/// Create a new Bluesky adapter with a custom PDS service URL.
pub fn with_service_url(identifier: String, app_password: String, service_url: String) -> Self {
let (shutdown_tx, shutdown_rx) = watch::channel(false);
let service_url = service_url.trim_end_matches('/').to_string();
Self {
identifier,
app_password: Zeroizing::new(app_password),
service_url,
client: reqwest::Client::new(),
shutdown_tx: Arc::new(shutdown_tx),
shutdown_rx,
session: Arc::new(RwLock::new(None)),
}
}
/// Create a new session via `com.atproto.server.createSession`.
async fn create_session(&self) -> Result<BlueskySession, Box<dyn std::error::Error>> {
let url = format!("{}/xrpc/com.atproto.server.createSession", self.service_url);
let body = serde_json::json!({
"identifier": self.identifier,
"password": self.app_password.as_str(),
});
let resp = self.client.post(&url).json(&body).send().await?;
if !resp.status().is_success() {
let status = resp.status();
let resp_body = resp.text().await.unwrap_or_default();
return Err(format!("Bluesky createSession failed {status}: {resp_body}").into());
}
let resp_body: serde_json::Value = resp.json().await?;
let access_jwt = resp_body["accessJwt"]
.as_str()
.ok_or("Missing accessJwt")?
.to_string();
let refresh_jwt = resp_body["refreshJwt"]
.as_str()
.ok_or("Missing refreshJwt")?
.to_string();
let did = resp_body["did"].as_str().ok_or("Missing did")?.to_string();
Ok(BlueskySession {
access_jwt,
refresh_jwt,
did,
created_at: Instant::now(),
})
}
/// Refresh an existing session via `com.atproto.server.refreshSession`.
async fn refresh_session(
&self,
refresh_jwt: &str,
) -> Result<BlueskySession, Box<dyn std::error::Error>> {
let url = format!(
"{}/xrpc/com.atproto.server.refreshSession",
self.service_url
);
let resp = self
.client
.post(&url)
.bearer_auth(refresh_jwt)
.send()
.await?;
if !resp.status().is_success() {
// Refresh failed, create new session
return self.create_session().await;
}
let resp_body: serde_json::Value = resp.json().await?;
let access_jwt = resp_body["accessJwt"]
.as_str()
.ok_or("Missing accessJwt")?
.to_string();
let new_refresh_jwt = resp_body["refreshJwt"]
.as_str()
.ok_or("Missing refreshJwt")?
.to_string();
let did = resp_body["did"].as_str().ok_or("Missing did")?.to_string();
Ok(BlueskySession {
access_jwt,
refresh_jwt: new_refresh_jwt,
did,
created_at: Instant::now(),
})
}
/// Get a valid access JWT, creating or refreshing the session as needed.
async fn get_token(&self) -> Result<(String, String), Box<dyn std::error::Error>> {
let guard = self.session.read().await;
if let Some(ref session) = *guard {
// Sessions last ~2 hours; refresh if older than 90 minutes
if session.created_at.elapsed()
< Duration::from_secs(5400 - SESSION_REFRESH_BUFFER_SECS)
{
return Ok((session.access_jwt.clone(), session.did.clone()));
}
let refresh_jwt = session.refresh_jwt.clone();
drop(guard);
let new_session = self.refresh_session(&refresh_jwt).await?;
let token = new_session.access_jwt.clone();
let did = new_session.did.clone();
*self.session.write().await = Some(new_session);
return Ok((token, did));
}
drop(guard);
let session = self.create_session().await?;
let token = session.access_jwt.clone();
let did = session.did.clone();
*self.session.write().await = Some(session);
Ok((token, did))
}
/// Validate credentials by creating a session.
async fn validate(&self) -> Result<String, Box<dyn std::error::Error>> {
let session = self.create_session().await?;
let did = session.did.clone();
*self.session.write().await = Some(session);
Ok(did)
}
/// Create a post (skeet) via `com.atproto.repo.createRecord`.
async fn api_create_post(
&self,
text: &str,
reply_ref: Option<&serde_json::Value>,
) -> Result<(), Box<dyn std::error::Error>> {
let (token, did) = self.get_token().await?;
let url = format!("{}/xrpc/com.atproto.repo.createRecord", self.service_url);
let chunks = split_message(text, MAX_MESSAGE_LEN);
for chunk in chunks {
let now = Utc::now().format("%Y-%m-%dT%H:%M:%S%.3fZ").to_string();
let mut record = serde_json::json!({
"$type": "app.bsky.feed.post",
"text": chunk,
"createdAt": now,
});
if let Some(reply) = reply_ref {
record["reply"] = reply.clone();
}
let body = serde_json::json!({
"repo": did,
"collection": "app.bsky.feed.post",
"record": record,
});
let resp = self
.client
.post(&url)
.bearer_auth(&token)
.json(&body)
.send()
.await?;
if !resp.status().is_success() {
let status = resp.status();
let resp_body = resp.text().await.unwrap_or_default();
return Err(format!("Bluesky createRecord error {status}: {resp_body}").into());
}
}
Ok(())
}
}
/// Parse a Bluesky notification into a `ChannelMessage`.
fn parse_bluesky_notification(
notification: &serde_json::Value,
own_did: &str,
) -> Option<ChannelMessage> {
let reason = notification["reason"].as_str().unwrap_or("");
// We care about mentions and replies
if reason != "mention" && reason != "reply" {
return None;
}
let author = notification.get("author")?;
let author_did = author["did"].as_str().unwrap_or("");
// Skip own notifications
if author_did == own_did {
return None;
}
let record = notification.get("record")?;
let text = record["text"].as_str().unwrap_or("");
if text.is_empty() {
return None;
}
let uri = notification["uri"].as_str().unwrap_or("").to_string();
let cid = notification["cid"].as_str().unwrap_or("").to_string();
let handle = author["handle"].as_str().unwrap_or("").to_string();
let display_name = author["displayName"]
.as_str()
.unwrap_or(&handle)
.to_string();
let indexed_at = notification["indexedAt"].as_str().unwrap_or("").to_string();
let content = if text.starts_with('/') {
let parts: Vec<&str> = text.splitn(2, ' ').collect();
let cmd_name = parts[0].trim_start_matches('/');
let args: Vec<String> = parts
.get(1)
.map(|a| a.split_whitespace().map(String::from).collect())
.unwrap_or_default();
ChannelContent::Command {
name: cmd_name.to_string(),
args,
}
} else {
ChannelContent::Text(text.to_string())
};
let mut metadata = HashMap::new();
metadata.insert("uri".to_string(), serde_json::Value::String(uri.clone()));
metadata.insert("cid".to_string(), serde_json::Value::String(cid));
metadata.insert("handle".to_string(), serde_json::Value::String(handle));
metadata.insert(
"reason".to_string(),
serde_json::Value::String(reason.to_string()),
);
metadata.insert(
"indexed_at".to_string(),
serde_json::Value::String(indexed_at),
);
// Extract reply reference if present
if let Some(reply) = record.get("reply") {
metadata.insert("reply_ref".to_string(), reply.clone());
}
Some(ChannelMessage {
channel: ChannelType::Custom("bluesky".to_string()),
platform_message_id: uri,
sender: ChannelUser {
platform_id: author_did.to_string(),
display_name,
openfang_user: None,
},
content,
target_agent: None,
timestamp: Utc::now(),
is_group: false, // Bluesky mentions are treated as direct interactions
thread_id: None,
metadata,
})
}
#[async_trait]
impl ChannelAdapter for BlueskyAdapter {
fn name(&self) -> &str {
"bluesky"
}
fn channel_type(&self) -> ChannelType {
ChannelType::Custom("bluesky".to_string())
}
async fn start(
&self,
) -> Result<Pin<Box<dyn Stream<Item = ChannelMessage> + Send>>, Box<dyn std::error::Error>>
{
// Validate credentials
let did = self.validate().await?;
info!("Bluesky adapter authenticated as {did}");
let (tx, rx) = mpsc::channel::<ChannelMessage>(256);
let service_url = self.service_url.clone();
let session = Arc::clone(&self.session);
let own_did = did;
let client = self.client.clone();
let identifier = self.identifier.clone();
let app_password = self.app_password.clone();
let mut shutdown_rx = self.shutdown_rx.clone();
tokio::spawn(async move {
let poll_interval = Duration::from_secs(POLL_INTERVAL_SECS);
let mut backoff = Duration::from_secs(1);
let mut last_seen_at: Option<String> = None;
loop {
tokio::select! {
_ = shutdown_rx.changed() => {
info!("Bluesky adapter shutting down");
break;
}
_ = tokio::time::sleep(poll_interval) => {}
}
if *shutdown_rx.borrow() {
break;
}
// Get current access token
let token = {
let guard = session.read().await;
match &*guard {
Some(s) => s.access_jwt.clone(),
None => {
// Re-create session
drop(guard);
let url =
format!("{}/xrpc/com.atproto.server.createSession", service_url);
let body = serde_json::json!({
"identifier": identifier,
"password": app_password.as_str(),
});
match client.post(&url).json(&body).send().await {
Ok(resp) => {
let resp_body: serde_json::Value =
resp.json().await.unwrap_or_default();
let tok =
resp_body["accessJwt"].as_str().unwrap_or("").to_string();
if tok.is_empty() {
warn!("Bluesky: failed to create session");
backoff = (backoff * 2).min(Duration::from_secs(60));
tokio::time::sleep(backoff).await;
continue;
}
let new_session = BlueskySession {
access_jwt: tok.clone(),
refresh_jwt: resp_body["refreshJwt"]
.as_str()
.unwrap_or("")
.to_string(),
did: resp_body["did"].as_str().unwrap_or("").to_string(),
created_at: Instant::now(),
};
*session.write().await = Some(new_session);
tok
}
Err(e) => {
warn!("Bluesky: session create error: {e}");
backoff = (backoff * 2).min(Duration::from_secs(60));
tokio::time::sleep(backoff).await;
continue;
}
}
}
}
};
// Poll notifications
let mut url = format!(
"{}/xrpc/app.bsky.notification.listNotifications?limit=25",
service_url
);
if let Some(ref seen) = last_seen_at {
url.push_str(&format!("&seenAt={}", seen));
}
let resp = match client.get(&url).bearer_auth(&token).send().await {
Ok(r) => r,
Err(e) => {
warn!("Bluesky: notification fetch error: {e}");
backoff = (backoff * 2).min(Duration::from_secs(60));
continue;
}
};
if !resp.status().is_success() {
warn!("Bluesky: notification fetch returned {}", resp.status());
if resp.status().as_u16() == 401 {
// Session expired, clear it so next iteration re-creates
*session.write().await = None;
}
continue;
}
let body: serde_json::Value = match resp.json().await {
Ok(b) => b,
Err(e) => {
warn!("Bluesky: failed to parse notifications: {e}");
continue;
}
};
let notifications = match body["notifications"].as_array() {
Some(arr) => arr,
None => continue,
};
for notif in notifications {
// Track latest indexed_at
if let Some(indexed) = notif["indexedAt"].as_str() {
if last_seen_at
.as_ref()
.map(|s| indexed > s.as_str())
.unwrap_or(true)
{
last_seen_at = Some(indexed.to_string());
}
}
if let Some(msg) = parse_bluesky_notification(notif, &own_did) {
if tx.send(msg).await.is_err() {
return;
}
}
}
// Update seen marker
if last_seen_at.is_some() {
let mark_url = format!("{}/xrpc/app.bsky.notification.updateSeen", service_url);
let mark_body = serde_json::json!({
"seenAt": Utc::now().format("%Y-%m-%dT%H:%M:%S%.3fZ").to_string(),
});
let _ = client
.post(&mark_url)
.bearer_auth(&token)
.json(&mark_body)
.send()
.await;
}
backoff = Duration::from_secs(1);
}
info!("Bluesky polling loop stopped");
});
Ok(Box::pin(tokio_stream::wrappers::ReceiverStream::new(rx)))
}
async fn send(
&self,
_user: &ChannelUser,
content: ChannelContent,
) -> Result<(), Box<dyn std::error::Error>> {
match content {
ChannelContent::Text(text) => {
self.api_create_post(&text, None).await?;
}
_ => {
self.api_create_post("(Unsupported content type)", None)
.await?;
}
}
Ok(())
}
async fn send_typing(&self, _user: &ChannelUser) -> Result<(), Box<dyn std::error::Error>> {
// Bluesky/AT Protocol does not support typing indicators
Ok(())
}
async fn stop(&self) -> Result<(), Box<dyn std::error::Error>> {
let _ = self.shutdown_tx.send(true);
Ok(())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_bluesky_adapter_creation() {
let adapter = BlueskyAdapter::new(
"alice.bsky.social".to_string(),
"app-password-123".to_string(),
);
assert_eq!(adapter.name(), "bluesky");
assert_eq!(
adapter.channel_type(),
ChannelType::Custom("bluesky".to_string())
);
}
#[test]
fn test_bluesky_default_service_url() {
let adapter = BlueskyAdapter::new("alice.bsky.social".to_string(), "pwd".to_string());
assert_eq!(adapter.service_url, "https://bsky.social");
}
#[test]
fn test_bluesky_custom_service_url() {
let adapter = BlueskyAdapter::with_service_url(
"alice.example.com".to_string(),
"pwd".to_string(),
"https://pds.example.com/".to_string(),
);
assert_eq!(adapter.service_url, "https://pds.example.com");
}
#[test]
fn test_bluesky_identifier_stored() {
let adapter = BlueskyAdapter::new("did:plc:abc123".to_string(), "pwd".to_string());
assert_eq!(adapter.identifier, "did:plc:abc123");
}
#[test]
fn test_parse_bluesky_notification_mention() {
let notif = serde_json::json!({
"uri": "at://did:plc:sender/app.bsky.feed.post/abc123",
"cid": "bafyrei...",
"author": {
"did": "did:plc:sender",
"handle": "alice.bsky.social",
"displayName": "Alice"
},
"reason": "mention",
"record": {
"text": "@bot hello there!",
"createdAt": "2024-01-01T00:00:00.000Z"
},
"indexedAt": "2024-01-01T00:00:01.000Z"
});
let msg = parse_bluesky_notification(¬if, "did:plc:bot").unwrap();
assert_eq!(msg.channel, ChannelType::Custom("bluesky".to_string()));
assert_eq!(msg.sender.display_name, "Alice");
assert_eq!(msg.sender.platform_id, "did:plc:sender");
assert!(matches!(msg.content, ChannelContent::Text(ref t) if t == "@bot hello there!"));
}
#[test]
fn test_parse_bluesky_notification_reply() {
let notif = serde_json::json!({
"uri": "at://did:plc:sender/app.bsky.feed.post/def456",
"cid": "bafyrei...",
"author": {
"did": "did:plc:sender",
"handle": "bob.bsky.social",
"displayName": "Bob"
},
"reason": "reply",
"record": {
"text": "Nice post!",
"createdAt": "2024-01-01T00:00:00.000Z",
"reply": {
"root": { "uri": "at://...", "cid": "..." },
"parent": { "uri": "at://...", "cid": "..." }
}
},
"indexedAt": "2024-01-01T00:00:01.000Z"
});
let msg = parse_bluesky_notification(¬if, "did:plc:bot").unwrap();
assert!(msg.metadata.contains_key("reply_ref"));
}
#[test]
fn test_parse_bluesky_notification_skips_own() {
let notif = serde_json::json!({
"uri": "at://did:plc:bot/app.bsky.feed.post/abc",
"cid": "...",
"author": {
"did": "did:plc:bot",
"handle": "bot.bsky.social"
},
"reason": "mention",
"record": {
"text": "self mention"
},
"indexedAt": "2024-01-01T00:00:00.000Z"
});
assert!(parse_bluesky_notification(¬if, "did:plc:bot").is_none());
}
#[test]
fn test_parse_bluesky_notification_skips_like() {
let notif = serde_json::json!({
"uri": "at://...",
"cid": "...",
"author": {
"did": "did:plc:other",
"handle": "other.bsky.social"
},
"reason": "like",
"record": {},
"indexedAt": "2024-01-01T00:00:00.000Z"
});
assert!(parse_bluesky_notification(¬if, "did:plc:bot").is_none());
}
#[test]
fn test_parse_bluesky_notification_command() {
let notif = serde_json::json!({
"uri": "at://did:plc:sender/app.bsky.feed.post/cmd1",
"cid": "...",
"author": {
"did": "did:plc:sender",
"handle": "alice.bsky.social",
"displayName": "Alice"
},
"reason": "mention",
"record": {
"text": "/status check"
},
"indexedAt": "2024-01-01T00:00:00.000Z"
});
let msg = parse_bluesky_notification(¬if, "did:plc:bot").unwrap();
match &msg.content {
ChannelContent::Command { name, args } => {
assert_eq!(name, "status");
assert_eq!(args, &["check"]);
}
other => panic!("Expected Command, got {other:?}"),
}
}
}