zesdex/src/app/bgbash/control.rs

use std::collections::HashMap;
use std::sync::Mutex;
use std::sync::OnceLock;

use super::job::BashJob;

pub(crate) fn bash_jobs_map() -> &'static Mutex<HashMap<String, BashJob>> {
    static JOBS: OnceLock<Mutex<HashMap<String, BashJob>>> = OnceLock::new();
    JOBS.get_or_init(|| Mutex::new(HashMap::new()))
}

pub fn bash_output(id: &str) -> Option<Vec<String>> {
    let mut map = bash_jobs_map().lock().ok()?;
    let job = map.get_mut(id)?;
    let mut lines = Vec::new();
    while let Some(line) = job.try_read_line() {
        lines.push(line);
    }
    if lines.is_empty() { None } else { Some(lines) }
}

pub fn bash_kill(id: &str) -> anyhow::Result<()> {
    let mut map = bash_jobs_map().lock().map_err(|e| anyhow::anyhow!("lock error: {}", e))?;
    let job = map.remove(id);
    match job {
        Some(job) => {
            // Actually terminate the child process via its PID
            if job.child_pid > 0 {
                #[cfg(unix)]
                unsafe {
                    libc::kill(job.child_pid as i32, libc::SIGTERM);
                }
            }
            Ok(())
        }
        None => anyhow::bail!("bash job '{}' not found", id),
    }
}