Files
yoi/crates/memory/src/resident.rs
T

92 lines
2.9 KiB
Rust

//! Workspace memory resident-enumeration helpers.
//!
//! Surfaces used by the Worker system-prompt assembler:
//!
//! - [`collect_resident_summary`] — the body of
//! `<workspace>/.yoi/memory/summary.md` when it parses as a summary
//! record and has non-empty body.
//!
//! Files that fail to read or parse are skipped silently — the Linter
//! enforces shape on write, so a malformed file here means external
//! tampering and we'd rather degrade than panic.
use crate::schema::{SummaryFrontmatter, split_frontmatter};
use crate::workspace::WorkspaceLayout;
/// Read `<workspace>/.yoi/memory/summary.md` for resident prompt
/// injection. Returns only the markdown body (frontmatter stripped), and
/// degrades to `None` for missing, unreadable, malformed, or empty records.
pub fn collect_resident_summary(layout: &WorkspaceLayout) -> Option<String> {
let raw = std::fs::read_to_string(layout.summary_path()).ok()?;
let (yaml, body) = split_frontmatter(&raw).ok()?;
let _fm: SummaryFrontmatter = serde_yaml::from_str(yaml).ok()?;
let body = body.trim_matches(&['\n', '\r'][..]);
if body.trim().is_empty() {
None
} else {
Some(body.to_string())
}
}
#[cfg(test)]
mod tests {
use super::*;
use chrono::Utc;
use std::path::Path;
use tempfile::TempDir;
fn now() -> String {
Utc::now().to_rfc3339()
}
fn write_summary(dir: &Path, body: &str) {
let path = dir.join(".yoi/memory/summary.md");
let content = format!("---\nupdated_at: {n}\n---\n{body}", n = now());
std::fs::write(path, content).unwrap();
}
fn setup() -> (TempDir, WorkspaceLayout) {
let dir = TempDir::new().unwrap();
std::fs::create_dir_all(dir.path().join(".yoi/memory")).unwrap();
let layout = WorkspaceLayout::new(dir.path().to_path_buf());
(dir, layout)
}
#[test]
fn missing_summary_returns_none() {
let dir = TempDir::new().unwrap();
let layout = WorkspaceLayout::new(dir.path().to_path_buf());
assert!(collect_resident_summary(&layout).is_none());
}
#[test]
fn summary_returns_body_without_frontmatter() {
let (dir, layout) = setup();
write_summary(dir.path(), "remember this\n");
let got = collect_resident_summary(&layout).unwrap();
assert_eq!(got, "remember this");
assert!(!got.contains("updated_at"));
assert!(!got.contains("---"));
}
#[test]
fn malformed_summary_returns_none() {
let (dir, layout) = setup();
std::fs::write(
dir.path().join(".yoi/memory/summary.md"),
"---\nthis is not yaml: : :\n---\nbody\n",
)
.unwrap();
assert!(collect_resident_summary(&layout).is_none());
}
#[test]
fn empty_summary_body_returns_none() {
let (dir, layout) = setup();
write_summary(dir.path(), " \n");
assert!(collect_resident_summary(&layout).is_none());
}
}