#![allow(clippy::empty_loop)]

use crate::{
    arch::{drivers::graphics::GraphicsBuffer, init, sloop},
    driver_traits::graphics::Graphics,
    experiments::systeminfo::{KERNEL_VERSION, RELEASE_TYPE},
    keyboard::DecodedKey,
    relib::math::rand::RAND_HANDLE,
};

use alloc::{boxed::Box, rc::Rc};
use lazy_static::lazy_static;

#[no_mangle]
#[allow(unconditional_recursion)]
pub extern "C" fn stack_overflow() -> u8 {
    stack_overflow();
    // meme number
    69 // NOTE: Any specific reason for this number asside from memes?
}

lazy_static! {
    pub static ref KEY_BUFFER: [DecodedKey; 256] = [DecodedKey::RawKey(123); 256];
    pub static ref KEY_BUFFER_POINTER: u8 = 0;
}
// Defines the entry point

#[no_mangle]
pub fn kernel_main() -> ! {
    init::init();

    GraphicsBuffer::draw();
    GraphicsBuffer::hide_cursor();
    GraphicsBuffer::show_cursor();

    {
        use alloc::{vec, vec::Vec};
        let x: Vec<u8> = vec![1];
        println!("{:?}", x);

        let heap_value = Box::new(41);
        println!("heap_value at {:p}", heap_value);

        // create a dynamically sized vector
        let mut vec = Vec::new();
        for i in 0..500 {
            vec.push(i);
        }
        println!("vec at {:p}", vec.as_slice());

        // create a reference counted vector -> will be freed when count reaches 0
        let reference_counted = Rc::new(vec![1, 2, 3]);
        let cloned_reference = reference_counted.clone();
        println!(
            "current reference count is {}",
            Rc::strong_count(&cloned_reference)
        );
        core::mem::drop(reference_counted);
        println!(
            "reference count is {} now",
            Rc::strong_count(&cloned_reference)
        );
    }

    // crate::wasm::evaluate();

    /* If AES is present then AES init rng as well
    // Maybe via a cfg
        AES::init_rng();

    */

    println!("{} v{}", RELEASE_TYPE, KERNEL_VERSION);

    {
        use crate::experiments::mail::MailBoxes;
        let mut x = MailBoxes::new();
        x.set_flag(1);
        x.set_flag(2);
        // x.dump_flags();
    }

    // stack_overflow();
    // crate::arch::shutdown();
    sloop()
}

lazy_static! {
    pub static ref TICK: spin::Mutex<u64> = spin::Mutex::new(0);
}
/// called by arch specific timers to tick up all kernel related functions
pub fn tick() {
    let mut data = TICK.lock();
    *data += 1;
    RAND_HANDLE.lock().seed_entropy_timer(*data);
}

pub fn key_entropy(key: u8) {
    RAND_HANDLE.lock().seed_entropy_keyboard(key);
}