mod app;
pub use app::App;

use ::anyhow::Result;
use ::vulkanalia::vk::DeviceV1_0;
use ::winit::dpi::LogicalSize;
use ::winit::event::{Event, WindowEvent};
use ::winit::event_loop::{ControlFlow, EventLoop};
use ::winit::window::WindowBuilder;

pub const VALIDATION_ENABLED: bool = cfg!(debug_assertions);

pub fn run() -> Result<()> {
    // Window
    let event_loop = EventLoop::new();
    let window = WindowBuilder::new()
        .with_title("Vulkan Tutorial (Rust)")
        .with_inner_size(LogicalSize::new(1024, 768))
        .build(&event_loop)?;

    // App
    let mut app = App::create(&window)?;
    let mut destroying = false;
    let mut minimized = false;
    event_loop.run(move |event, _, control_flow| {
        *control_flow = ControlFlow::Poll;
        match event {
            // Render a frame if our Vulkan app is not being destroyed
            Event::MainEventsCleared if !destroying && !minimized => app.render(&window).unwrap(),
            // Let the app know it has been resized
            Event::WindowEvent {
                event: WindowEvent::Resized(size),
                ..
            } => {
                if size.width == 0 || size.height == 0 {
                    minimized = true;
                } else {
                    minimized = false;
                    app.resized = true;
                }
            }
            // Destroy our Vulkan app.
            Event::WindowEvent {
                event: WindowEvent::CloseRequested,
                ..
            } => {
                destroying = true;
                *control_flow = ControlFlow::Exit;
                unsafe {
                    app.device.device_wait_idle().unwrap();
                    app.destroy();
                }
            }
            _ => {}
        }
    });
}