#![allow(clippy::single_match)]

use std::time::Duration;

use simple_logger::SimpleLogger;
use winit::{
    event::{Event, WindowEvent},
    event_loop::{ControlFlow, EventLoop},
    window::WindowBuilder,
};

#[path = "util/fill.rs"]
mod fill;

fn main() -> Result<(), impl std::error::Error> {
    SimpleLogger::new().init().unwrap();
    let event_loop = EventLoop::new().unwrap();

    let window = WindowBuilder::new()
        .with_title("A fantastic window!")
        .build(&event_loop)
        .unwrap();

    event_loop.run(move |event, elwt| {
        println!("{event:?}");

        match event {
            // New iteration: reset the control flow to Wait as we don't know if we will need to wait
            Event::NewEvents(_) => elwt.set_control_flow(ControlFlow::Wait),
            // ... some other event change internal data structures ...
            Event::AboutToWait => {
                // About to wait:  query internal data structure to know how long we need to sleep
                elwt.set_control_flow(ControlFlow::wait_duration(Duration::from_secs(1)));
            }

            Event::WindowEvent {
                event: WindowEvent::CloseRequested,
                ..
            } => elwt.exit(),
            Event::WindowEvent {
                event: WindowEvent::RedrawRequested,
                ..
            } => {
                fill::fill_window(&window);
            }
            _ => (),
        }
    })
}