Files
marathon/crates/libmarathon/src/engine/persistence.rs
2026-02-07 18:18:57 +00:00

73 lines
2.3 KiB
Rust

//! Persistence Manager - handles SQLite storage outside Bevy
use rusqlite::{Connection, OptionalExtension};
use std::sync::{Arc, Mutex};
use crate::networking::{Session, SessionId};
pub struct PersistenceManager {
conn: Arc<Mutex<Connection>>,
}
impl PersistenceManager {
pub fn new(db_path: &str) -> Self {
let conn = Connection::open(db_path).expect("Failed to open database");
// Schema is handled by the migration system in persistence/migrations
// No hardcoded schema creation here
Self {
conn: Arc::new(Mutex::new(conn)),
}
}
pub fn save_session(&self, session: &Session) -> anyhow::Result<()> {
let conn = self.conn.lock().unwrap();
// Schema from migration 004: id (BLOB), code, name, created_at, last_active, entity_count, state, secret
conn.execute(
"INSERT OR REPLACE INTO sessions (id, code, state, created_at, last_active, entity_count)
VALUES (?1, ?2, ?3, ?4, ?5, ?6)",
(
session.id.as_uuid().as_bytes(), // id is BLOB in migration 004
session.id.to_code(), // code is the text representation
format!("{:?}", session.state),
session.created_at,
session.last_active,
0, // entity_count default
),
)?;
Ok(())
}
pub fn load_last_active_session(&self) -> anyhow::Result<Option<Session>> {
let conn = self.conn.lock().unwrap();
// Query for the most recently active session
// Schema from migration 004: uses last_active (not last_active_at)
let mut stmt = conn.prepare(
"SELECT code, state, created_at, last_active
FROM sessions
ORDER BY last_active DESC
LIMIT 1"
)?;
let session = stmt.query_row([], |row| {
let code: String = row.get(0)?;
let _state: String = row.get(1)?;
let _created_at: i64 = row.get(2)?;
let _last_active: i64 = row.get(3)?;
// Parse session ID from code
if let Ok(session_id) = SessionId::from_code(&code) {
Ok(Some(Session::new(session_id)))
} else {
Ok(None)
}
}).optional()?;
Ok(session.flatten())
}
}