use async_trait::async_trait;
use tokio::sync::Mutex;
use crate::error::Result;
use crate::interfaces::brain::{BrainContext, BrainEvent, BrainPlugin};
#[derive(Debug, Clone)]
pub struct ExplainabilityNote {
pub explanation: String,
}
pub struct ExplainabilityBrain {
last_note: Mutex<Option<ExplainabilityNote>>,
}
impl ExplainabilityBrain {
pub fn new() -> Self {
Self {
last_note: Mutex::new(None),
}
}
pub async fn last_note(&self) -> Option<ExplainabilityNote> {
let guard = self.last_note.lock().await;
guard.clone()
}
fn explain(message: &str) -> ExplainabilityNote {
let explanation = format!("Response reasoning grounded in user input: {message}");
ExplainabilityNote { explanation }
}
}
#[async_trait]
impl BrainPlugin for ExplainabilityBrain {
fn name(&self) -> &str {
"explainability"
}
fn description(&self) -> &str {
"Creates lightweight explainability notes"
}
async fn on_event(&self, event: BrainEvent, _ctx: &BrainContext) -> Result<()> {
if let BrainEvent::UserMessage { text, .. } = event {
let note = Self::explain(&text);
let mut guard = self.last_note.lock().await;
*guard = Some(note);
}
Ok(())
}
}