#![allow(clippy::single_match)]

#[cfg(target_os = "macos")]
use std::{collections::HashMap, num::NonZeroUsize};

#[cfg(target_os = "macos")]
use simple_logger::SimpleLogger;
#[cfg(target_os = "macos")]
use winit::{
    event::{ElementState, Event, KeyEvent, WindowEvent},
    event_loop::EventLoop,
    keyboard::Key,
    platform::macos::{WindowBuilderExtMacOS, WindowExtMacOS},
    window::{Window, WindowBuilder},
};

#[cfg(target_os = "macos")]
#[path = "util/fill.rs"]
mod fill;

#[cfg(target_os = "macos")]
fn main() -> Result<(), impl std::error::Error> {
    SimpleLogger::new().init().unwrap();
    let event_loop = EventLoop::new().unwrap();

    let mut windows = HashMap::new();
    let window = Window::new(&event_loop).unwrap();
    println!("Opened a new window: {:?}", window.id());
    windows.insert(window.id(), window);

    println!("Press N to open a new window.");

    event_loop.run(move |event, event_loop, control_flow| {
        control_flow.set_wait();

        match event {
            Event::WindowEvent { event, window_id } => {
                match event {
                    WindowEvent::CloseRequested => {
                        println!("Window {window_id:?} has received the signal to close");

                        // This drops the window, causing it to close.
                        windows.remove(&window_id);

                        if windows.is_empty() {
                            control_flow.set_exit();
                        }
                    }
                    WindowEvent::Resized(_) => {
                        if let Some(window) = windows.get(&window_id) {
                            window.request_redraw();
                        }
                    }
                    WindowEvent::KeyboardInput {
                        event:
                            KeyEvent {
                                state: ElementState::Pressed,
                                logical_key,
                                ..
                            },
                        is_synthetic: false,
                        ..
                    } => match logical_key.as_ref() {
                        Key::Character("t") => {
                            let tabbing_id = windows.get(&window_id).unwrap().tabbing_identifier();
                            let window = WindowBuilder::new()
                                .with_tabbing_identifier(&tabbing_id)
                                .build(event_loop)
                                .unwrap();
                            println!("Added a new tab: {:?}", window.id());
                            windows.insert(window.id(), window);
                        }
                        Key::Character("w") => {
                            let _ = windows.remove(&window_id);
                        }
                        Key::ArrowRight => {
                            windows.get(&window_id).unwrap().select_next_tab();
                        }
                        Key::ArrowLeft => {
                            windows.get(&window_id).unwrap().select_previous_tab();
                        }
                        Key::Character(ch) => {
                            if let Ok(index) = ch.parse::<NonZeroUsize>() {
                                let index = index.get();
                                // Select the last tab when pressing `9`.
                                let window = windows.get(&window_id).unwrap();
                                if index == 9 {
                                    window.select_tab_at_index(window.num_tabs() - 1)
                                } else {
                                    window.select_tab_at_index(index - 1);
                                }
                            }
                        }
                        _ => (),
                    },
                    _ => (),
                }
            }
            Event::RedrawRequested(window_id) => {
                if let Some(window) = windows.get(&window_id) {
                    fill::fill_window(window);
                }
            }
            _ => (),
        }
    })
}

#[cfg(not(target_os = "macos"))]
fn main() {
    println!("This example is only supported on MacOS");
}