use bitflags::bitflags;

use crate::data_types::dimens::Dimens;
use crate::vector::Vec2;

pub mod buffer;
pub mod currently_bound;
pub mod shader;
pub mod texture;
pub mod vertex_array;

mod util;

#[cfg(feature = "debug")]
pub mod debug;

pub fn set_viewport(position: &Vec2<u32>, size: Dimens<u32>)
{
    unsafe {
        #[allow(clippy::cast_possible_wrap)]
        gl::Viewport(
            position.x as i32,
            position.y as i32,
            size.width as i32,
            size.height as i32,
        );
    }
}

pub fn clear_buffers(mask: BufferClearMask)
{
    unsafe {
        gl::Clear(mask.bits());
    }
}

pub fn enable(capacity: Capability)
{
    unsafe {
        gl::Enable(capacity as u32);
    }
}

bitflags! {
    #[derive(Debug, Clone, Copy)]
    pub struct BufferClearMask: u32 {
        const COLOR = gl::COLOR_BUFFER_BIT;
        const DEPTH = gl::DEPTH_BUFFER_BIT;
        const STENCIL = gl::STENCIL_BUFFER_BIT;
    }
}

#[derive(Debug)]
#[repr(u32)]
pub enum Capability
{
    DepthTest = gl::DEPTH_TEST,
}