use crate::mem::{heap_clone, heap_drop, heap_move_nonnull, heap_remove};
use servicepoint::{
    BitmapCommand, Brightness, GlobalBrightnessCommand, Packet,
};
use std::ptr::NonNull;

/// Set the brightness of all tiles to the same value.
///
/// Returns: a new [GlobalBrightnessCommand] instance.
#[no_mangle]
pub unsafe extern "C" fn sp_cmd_brightness_global_new(
    brightness: Brightness,
) -> NonNull<GlobalBrightnessCommand> {
    heap_move_nonnull(GlobalBrightnessCommand::from(brightness))
}

#[no_mangle]
pub unsafe extern "C" fn sp_cmd_brightness_global_into_packet(
    command: NonNull<GlobalBrightnessCommand>,
) -> NonNull<Packet> {
    heap_move_nonnull(unsafe { heap_remove(command) }.into())
}

/// Clones an [GlobalBrightnessCommand] instance.
///
/// returns: a new [GlobalBrightnessCommand] instance.
#[no_mangle]
pub unsafe extern "C" fn sp_cmd_brightness_global_clone(
    command: NonNull<GlobalBrightnessCommand>,
) -> NonNull<GlobalBrightnessCommand> {
    unsafe { heap_clone(command) }
}

#[no_mangle]
pub unsafe extern "C" fn sp_cmd_brightness_global_free(
    command: NonNull<BitmapCommand>,
) {
    unsafe { heap_drop(command) }
}

/// Moves the provided bitmap to be contained in the command.
#[no_mangle]
pub unsafe extern "C" fn sp_cmd_brightness_global_set(
    mut command: NonNull<GlobalBrightnessCommand>,
    brightness: Brightness,
) {
    unsafe {
        command.as_mut().brightness = brightness;
    }
}

#[no_mangle]
pub unsafe extern "C" fn sp_cmd_brightness_global_get(
    mut command: NonNull<GlobalBrightnessCommand>,
) -> Brightness {
    unsafe { command.as_mut().brightness }
}