use pc_keyboard::DecodedKey;
use x86_64::structures::idt::InterruptStackFrame;

use crate::{events::EVENTMAN, interrupts::PICS};

pub struct Ps2KbPressEvent(DecodedKey);

pub extern "x86-interrupt" fn ps2_kb_int(_sf: InterruptStackFrame){
    use pc_keyboard::{layouts, DecodedKey, HandleControl, Keyboard, ScancodeSet1};
    use spin::Mutex;
    use x86_64::instructions::port::Port;

    lazy_static::lazy_static! {
        static ref KEYBOARD: Mutex<Keyboard<layouts::Us104Key, ScancodeSet1>> =
            Mutex::new(Keyboard::new(ScancodeSet1::new(),
                layouts::Us104Key, HandleControl::Ignore)
            );
    }

    let mut keyboard = KEYBOARD.lock();
    let mut port = Port::new(0x60);

    let scancode: u8 = unsafe { port.read() };
    if let Ok(Some(key_event)) = keyboard.add_byte(scancode) {
        if let Some(key) = keyboard.process_keyevent(key_event) {
            EVENTMAN.lock().dispatch(&crate::events::Event::Ps2KeyPress(Some(key)));
        }
    }
    unsafe {
        PICS.lock()
            .notify_end_of_interrupt(super::InterruptIndex::Keyboard as u8);
    }
}