use core::{ffi::c_int, ptr::NonNull};

use super::{sys_time::__ygg_timeval_t, sys_types::id_t};

pub type rlim_t = u64;

pub type __ygg_rusage_t = rusage;

pub const PRIO_PROCESS: c_int = 0;
pub const PRIO_PGRP: c_int = 1;
pub const PRIO_USER: c_int = 2;

pub const RLIM_INFINITY: rlim_t = u64::MAX;
pub const RLIM_SAVED_MAX: rlim_t = RLIM_INFINITY;
pub const RLIM_SAVED_CUR: rlim_t = RLIM_INFINITY;

pub const RUSAGE_SELF: c_int = 0;

pub const RLIMIT_CORE: c_int = 1;
pub const RLIMIT_CPU: c_int = 2;
pub const RLIMIT_DATA: c_int = 3;
pub const RLIMIT_FSIZE: c_int = 4;
pub const RLIMIT_NOFILE: c_int = 5;
pub const RLIMIT_STACK: c_int = 6;
pub const RLIMIT_AS: c_int = 7;

#[repr(C)]
pub struct rlimit {
    pub rlim_cur: rlim_t,
    pub rlim_max: rlim_t
}

#[repr(C)]
pub struct rusage {
    pub ru_utime: __ygg_timeval_t,
    pub ru_stime: __ygg_timeval_t
}

#[no_mangle]
unsafe extern "C" fn getpriority(_which: c_int, _who: id_t) -> c_int {
    todo!()
}

#[no_mangle]
unsafe extern "C" fn getrlimit(_which: c_int, rlimit: *mut rlimit) -> c_int {
    if let Some(rlimit) = NonNull::new(rlimit) {
        rlimit.write(rlimit {
            rlim_cur: 0,
            rlim_max: 0,
        });
    }
    -1
}

#[no_mangle]
unsafe extern "C" fn getrusage(_which: c_int, _rusage: *mut rusage) -> c_int {
    todo!()
}

#[no_mangle]
unsafe extern "C" fn setpriority(_which: c_int, _who: id_t, _prio: c_int) -> c_int {
    todo!()
}

#[no_mangle]
unsafe extern "C" fn setrlimit(_which: c_int, _rlimit: *const rlimit) -> c_int {
    todo!()
}