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use std::ffi::CString;
use nix::{
    unistd::Pid,
    sys::wait::WaitStatus,
};
use crate::{
    program::posix::builtin::Builtin,
    program::{Result, Runtime},
};

/// Background job information.
pub struct Jobs;

impl Builtin for Jobs {
    fn run(self, _: Vec<CString>, runtime: &mut Runtime) -> Result<WaitStatus> {
        for (id, job) in runtime.jobs.borrow().iter() {
            println!("[{}]\t{}\t\t{}",
                     id, job.leader().pid(), job.leader().body());
        }
        Ok(WaitStatus::Exited(Pid::this(), 0))
    }
}