use std::time::Duration;
use sdl2::event::Event;
use sdl2::keyboard::Keycode;
use sdl2::pixels::Color;
use simple_logger::SimpleLogger;
use crate::emu::iomem::MemoryMappedIO;
use crate::emu::ram::RamMemory;
use crate::emu::mmu::{Memory, MappedMemory};
use crate::emu::program_counter::ProgramCounter;

use crate::misc::result::EmulatorResult;

mod emu;
mod args;
mod misc;
mod graphics;

fn main() -> EmulatorResult<()> {
    SimpleLogger::new().env().init().unwrap();
    let program_counter = ProgramCounter::new();
    let mmio = MemoryMappedIO::new(program_counter);
    let ram = RamMemory::try_new()?;
    let mmu = MappedMemory::new(mmio, ram);
    for i in 0..10 {
        log::info!("Memory at {} is {}",i,mmu.try_get_byte(i)?);
    }

    let sdl_context = sdl2::init().unwrap();
    let video_subsystem = sdl_context.video().unwrap();

    let window = video_subsystem.window("rust-sdl2 demo", 512, 512)
        .position_centered()
        .build()
        .unwrap();
    let mut canvas = window.into_canvas().build().unwrap();

    canvas.set_draw_color(Color::RGB(0, 255, 255));
    canvas.clear();
    canvas.present();
    let mut event_pump = sdl_context.event_pump().unwrap();
    let mut i = 0;
    'running: loop {
        i = (i + 1) % 255;
        canvas.set_draw_color(Color::RGB(i, 64, 255 - i));
        canvas.clear();
        for event in event_pump.poll_iter() {
            match event {
                Event::Quit {..} |
                Event::KeyDown { keycode: Some(Keycode::Escape), .. } => {
                    break 'running
                },
                event => {
                    log::info!("Received window event {:?}",event);
                }
            }
        }
        // The rest of the game loop goes here...

        canvas.present();
        ::std::thread::sleep(Duration::new(0, 1_000_000_000u32 / 60));
    }

    Ok(())
}