//! Starting `memoryd` for the device tests, with the repository's starter `soul.md`: `loopd`
//! starts no session without the memory block. Do not edit.

use std::path::Path;
use std::process::{Child, Command};
use std::thread;
use std::time::Duration;

/// Write `memoryd.toml` into `home`, start `memoryd serve`, and wait for its `loopd` socket.
pub fn start(home: &Path) -> Child {
    let root = Path::new(env!("CARGO_MANIFEST_DIR")).join("../..");
    let config = home.join("memoryd.toml");
    std::fs::write(
        &config,
        format!(
            "[paths]\nhome = \"{}\"\n[memory]\nsoul_starter = \"{}\"\n",
            home.display(),
            root.join("config/soul.md").display()
        ),
    )
    .unwrap();
    let socket = home.join("run").join("loop-memory").join("memory.sock");
    let _ = std::fs::remove_file(&socket);
    let bin = std::env::var("BOXMAKER_MEMORYD").expect("BOXMAKER_MEMORYD is not set");
    let mut child = Command::new(bin)
        .arg("serve")
        .arg("--config")
        .arg(&config)
        .spawn()
        .expect("cannot start memoryd");
    for _ in 0..600 {
        if socket.exists() {
            return child;
        }
        thread::sleep(Duration::from_millis(100));
    }
    let _ = child.kill();
    let _ = child.wait();
    panic!("memoryd did not come up within 60 s");
}