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//! Backend command dispatch and result queuing.
use anyhow::Result;
use super::core::RemoteBridge;
use crate::remote::protocol::{BackendCommand, RemoteMessage};
impl RemoteBridge {
/// Handle a command from the backend
pub(super) async fn handle_backend_command(&self, cmd: BackendCommand) -> Result<()> {
match cmd {
BackendCommand::Ping { timestamp } => {
self.queue_command_result_msg(RemoteMessage::Pong { timestamp })
.await?;
}
BackendCommand::RequestSync => {
tracing::info!("Backend requested sync, triggering immediate heartbeat");
if let Some(tx) = self.sync_trigger_tx.read().await.as_ref()
&& let Err(e) = tx.send(()).await
{
tracing::error!("Failed to trigger sync: {}", e);
}
}
BackendCommand::Subscribe { agent_id } => {
tracing::info!("Web client subscribed to agent: {}", agent_id);
self.subscriptions.write().await.insert(agent_id.clone());
self.start_agent_reader(&agent_id).await;
self.request_history_sync(&agent_id).await;
}
BackendCommand::Unsubscribe { agent_id } => {
tracing::info!("Web client unsubscribed from agent: {}", agent_id);
self.subscriptions.write().await.remove(&agent_id);
self.stop_agent_reader(&agent_id).await;
}
BackendCommand::SendInput {
command_id,
agent_id,
content,
} => {
let result = self.relay_input_to_agent(&agent_id, &content).await;
self.queue_command_result(&command_id, result).await?;
}
BackendCommand::SlashCommand {
command_id,
agent_id,
command,
args,
} => {
let result = self
.relay_slash_command_to_agent(&agent_id, &command, &args)
.await;
self.queue_command_result(&command_id, result).await?;
}
BackendCommand::CancelOperation {
command_id,
agent_id,
} => {
let result = self.relay_cancel_to_agent(&agent_id).await;
self.queue_command_result(&command_id, result).await?;
}
BackendCommand::SpawnAgent {
command_id,
model,
working_directory,
} => {
let result = self.spawn_new_agent(model, working_directory).await;
self.queue_command_result(&command_id, result).await?;
}
BackendCommand::Disconnect { reason } => {
tracing::info!("Backend requested disconnect: {}", reason);
}
// Attachment Commands
BackendCommand::AttachmentUpload {
command_id,
agent_id,
attachment_id,
filename,
mime_type,
size,
compressed,
compression_algorithm,
chunks_total,
} => {
tracing::info!(
"Starting attachment upload: {} ({} bytes, {} chunks)",
filename,
size,
chunks_total
);
let result = self
.attachment_receiver
.start_upload(
command_id.clone(),
agent_id,
attachment_id.clone(),
filename,
mime_type,
size,
compressed,
compression_algorithm,
chunks_total,
)
.await;
match result {
Ok(()) => {
self.queue_command_result(
&command_id,
Ok(serde_json::json!({
"attachment_id": attachment_id,
"status": "started"
})),
)
.await?;
}
Err(e) => {
self.queue_command_result(&command_id, Err(e)).await?;
}
}
}
BackendCommand::AttachmentChunk {
attachment_id,
chunk_index,
data,
is_final,
} => {
tracing::debug!(
"Receiving attachment chunk: {} (index {})",
attachment_id,
chunk_index
);
match self
.attachment_receiver
.receive_chunk(&attachment_id, chunk_index, &data, is_final)
.await
{
Ok(all_received) => {
if all_received {
tracing::info!("All chunks received for attachment: {}", attachment_id);
}
}
Err(e) => {
tracing::error!("Failed to receive chunk for {}: {}", attachment_id, e);
self.attachment_receiver.cancel_upload(&attachment_id).await;
}
}
}
BackendCommand::AttachmentComplete {
attachment_id,
checksum,
} => {
tracing::info!(
"Completing attachment upload: {} (checksum: {})",
attachment_id,
checksum
);
match self
.attachment_receiver
.complete_upload(&attachment_id, &checksum)
.await
{
Ok(file_path) => {
let path_str = file_path.display().to_string();
tracing::info!("Attachment saved to: {}", path_str);
self.queue_command_result_msg(RemoteMessage::AttachmentReceived {
attachment_id: attachment_id.clone(),
success: true,
file_path: Some(path_str),
error: None,
})
.await?;
}
Err(e) => {
tracing::error!("Failed to complete attachment: {}", e);
self.queue_command_result_msg(RemoteMessage::AttachmentReceived {
attachment_id: attachment_id.clone(),
success: false,
file_path: None,
error: Some(e.to_string()),
})
.await?;
}
}
}
BackendCommand::PermissionResponse {
request_id,
approved,
remember_for_session,
always_allow,
} => {
tracing::info!(
"Permission response for {}: approved={}",
request_id,
approved
);
// We don't have the tool_name here, but the CLI side tracks that.
// Use resolve() without tool name; the CLI caller handles session memory.
self.permission_relay
.resolve(
&request_id,
crate::remote::permission_relay::PermissionDecision {
approved,
remember_for_session,
always_allow,
},
)
.await;
}
BackendCommand::Authenticated { .. } | BackendCommand::AuthenticationFailed { .. } => {
tracing::warn!("Unexpected auth message after authentication");
}
}
Ok(())
}
/// Queue a command result to send with the next heartbeat
pub(super) async fn queue_command_result(
&self,
command_id: &str,
result: Result<serde_json::Value>,
) -> Result<()> {
let msg = match result {
Ok(value) => RemoteMessage::CommandResult {
command_id: command_id.to_string(),
success: true,
result: Some(value),
error: None,
},
Err(e) => RemoteMessage::CommandResult {
command_id: command_id.to_string(),
success: false,
result: None,
error: Some(e.to_string()),
},
};
self.queue_command_result_msg(msg).await
}
}