// Copyright (c) 2022 Marceline Cramer
// SPDX-License-Identifier: AGPL-3.0-or-later

use crate::{CursorEventKind, Vec2};
use canary_script::{api::DrawContext, Rect};

pub mod button;
pub mod dialog;
pub mod flex;
pub mod menu;
pub mod palette;
pub mod scroll;
pub mod slider;
pub mod shell;
pub mod text;

#[allow(unused)]
pub trait Widget {
    fn update(&mut self, dt: f32) {}
    fn draw(&mut self, ctx: &DrawContext) {}
    fn on_cursor_event(&mut self, kind: CursorEventKind, at: Vec2) {}
}

impl<T: Widget> Widget for Option<T> {
    fn update(&mut self, dt: f32) {
        if let Some(inner) = self.as_mut() {
            inner.update(dt);
        }
    }

    fn draw(&mut self, ctx: &DrawContext) {
        if let Some(inner) = self.as_mut() {
            inner.draw(ctx);
        }
    }

    fn on_cursor_event(&mut self, kind: CursorEventKind, at: Vec2) {
        if let Some(inner) = self.as_mut() {
            inner.on_cursor_event(kind, at);
        }
    }
}

pub trait RectBounds {
    fn get_bounds(&self) -> Rect;
}

pub trait Button {
    fn was_clicked(&self) -> bool;
}

#[allow(unused)]
pub trait Container {
    fn with_children(&mut self, f: impl FnMut(&mut dyn Widget));
    fn update(&mut self, dt: f32) {}
    fn draw(&mut self, ctx: &DrawContext) {}
    fn on_cursor_event(&mut self, kind: CursorEventKind, at: Vec2) {}
}

impl<T: Container> Widget for T {
    fn update(&mut self, dt: f32) {
        <Self as Container>::update(self, dt);
        self.with_children(|w| w.update(dt));
    }

    fn draw(&mut self, ctx: &DrawContext) {
        <Self as Container>::draw(self, ctx);
        self.with_children(|w| w.draw(ctx));
    }

    fn on_cursor_event(&mut self, kind: CursorEventKind, at: Vec2) {
        <Self as Container>::on_cursor_event(self, kind, at);
        self.with_children(|w| w.on_cursor_event(kind, at));
    }
}

pub mod prelude {
    pub use super::*;
    pub use crate::anim::Animation;
    pub use crate::style::{self, THEME};
    pub use canary_script::{*, api::*};
    pub use keyframe::functions::*;
}