use iced::{
    widget::{button, column, text},
    Element, Sandbox, Settings,
};

pub fn main() -> iced::Result {
    Counter::run(Settings::default())
}

#[derive(Default)]
struct Counter {
    value: i32,
}

impl Sandbox for Counter {
    type Message = Message;

    fn new() -> Self {
        Self::default()
    }

    fn title(&self) -> String {
        String::from("volute")
    }

    fn update(&mut self, message: Message) {
        match message {
            Message::IncrementPressed => {
                self.value += 1;
            }
            Message::DecrementPressed => {
                self.value -= 1;
            }
        }
    }

    fn view(&self) -> Element<Self::Message> {
        column![
            button("+").on_press(Message::IncrementPressed),
            text(self.value).size(50),
            button("-").on_press(Message::DecrementPressed),
        ]
        .into()
    }
}

#[derive(Debug, Clone, Copy)]
pub enum Message {
    IncrementPressed,
    DecrementPressed,
}