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//! Provides methods that returns some driver names.

use std::ffi::CStr;

use crate::bind;

/// Returns all of audio driver names recognized on now.
#[must_use]
pub fn all_audio_drivers() -> Vec<String> {
    let num = unsafe { bind::SDL_GetNumAudioDrivers() };
    (0..num)
        .map(|index| {
            let cstr = unsafe { CStr::from_ptr(bind::SDL_GetAudioDriver(index)) };
            cstr.to_string_lossy().to_string()
        })
        .collect()
}

/// Returns the current audio driver name, or `None` if it does not exist.
#[must_use]
pub fn current_driver() -> Option<String> {
    let ptr = unsafe { bind::SDL_GetCurrentAudioDriver() };
    (!ptr.is_null()).then(|| {
        let cstr = unsafe { CStr::from_ptr(ptr) };
        cstr.to_string_lossy().to_string()
    })
}