//  Stiletto
//  Copyright (C) 2020 Stiletto Authors
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU Affero General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU Affero General Public License for more details.
//
//  You should have received a copy of the GNU Affero General Public License
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.

//use log::{info, warn};

use druid::im::{vector, Vector};
use druid::widget::prelude::*;
use druid::{AppLauncher, Color, Data, LocalizedString, WindowDesc, Lens};

#[derive(Clone, Data, Lens)]
struct AppState {
    numbers: Vector<u32>,
}

fn build_ui() -> impl Widget<AppState> {
    use druid::UnitPoint;
    use druid::widget::{Align, Label, Button, CrossAxisAlignment, Flex, List, ListGrowDirection, WidgetExt, SizedBox};

    let list_buttons = Flex::row()
        .cross_axis_alignment(CrossAxisAlignment::Center)
        .with_child(Button::new("Add"))
        .with_child(Button::new("Remove"));

    let number_list = Flex::row()
        .cross_axis_alignment(CrossAxisAlignment::Center)
    	.with_flex_child(
            List::new(|| {
                SizedBox::new(
                    Label::new(|item: &u32, _env: &_| format!("{}", item))
                        .align_horizontal(UnitPoint::CENTER)
                        .background(Color::rgb(0.5, 0.5, 0.5))
                        .fix_width(100.0)
                        .fix_height(100.0)
                )
                .padding((10.0, 0.0))
            })
            .grow(ListGrowDirection::Right)
            .lens(AppState::numbers)
    	, 1.0);

    let toolbar = Flex::row()
        .cross_axis_alignment(CrossAxisAlignment::Center)
        .with_spacer(30.0)
        .with_child(Align::left(list_buttons))
        .with_spacer(30.0)
        .with_flex_child(Align::left(number_list), 1.0);

    Flex::column()
        .cross_axis_alignment(CrossAxisAlignment::Center)
        .with_child(
            SizedBox::new(toolbar)
            .height(100.0)
            .expand_width()
            .align_horizontal(UnitPoint::TOP)
        )
}

pub fn main() {
    let window = WindowDesc::new(build_ui)
        .window_size((1000.0, 400.00))
        .title(
            LocalizedString::new("custom-widget-demo-window-title").with_placeholder("Tools"),
        );
    let app_state = AppState {
        numbers: vector![1,2],
    };

    AppLauncher::with_window(window)
        .use_simple_logger()
        .launch(app_state)
        .expect("launch failed");
}