// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Shapes;
using osu.Framework.Graphics.Sprites;
using osu.Game.Graphics.Sprites;
using osuTK;
using osuTK.Graphics;
using System.Collections.Generic;

namespace osu.Game.Graphics.UserInterface
{
    public class ShowMoreButton : LoadingButton
    {
        private Color4 chevronIconColour;

        protected Color4 ChevronIconColour
        {
            get => chevronIconColour;
            set => chevronIconColour = leftChevron.Colour = rightChevron.Colour = value;
        }

        public string Text
        {
            get => text.Text;
            set => text.Text = value;
        }

        protected override IEnumerable<Drawable> EffectTargets => new[] { background };

        private ChevronIcon leftChevron;
        private ChevronIcon rightChevron;
        private SpriteText text;
        private Box background;

        public ShowMoreButton()
        {
            AutoSizeAxes = Axes.Both;
        }

        protected override Container CreateContent() => new CircularContainer
        {
            Masking = true,
            Size = new Vector2(140, 30),
            Child = background = new Box
            {
                RelativeSizeAxes = Axes.Both,
            }
        };

        protected override Drawable CreateText() => new FillFlowContainer
        {
            Anchor = Anchor.Centre,
            Origin = Anchor.Centre,
            AutoSizeAxes = Axes.Both,
            Direction = FillDirection.Horizontal,
            Spacing = new Vector2(7),
            Children = new Drawable[]
            {
                leftChevron = new ChevronIcon(),
                text = new OsuSpriteText
                {
                    Anchor = Anchor.Centre,
                    Origin = Anchor.Centre,
                    Font = OsuFont.GetFont(size: 12, weight: FontWeight.Bold),
                    Text = "show more".ToUpper(),
                },
                rightChevron = new ChevronIcon(),
            }
        };

        private class ChevronIcon : SpriteIcon
        {
            private const int icon_size = 8;

            public ChevronIcon()
            {
                Anchor = Anchor.Centre;
                Origin = Anchor.Centre;
                Size = new Vector2(icon_size);
                Icon = FontAwesome.Solid.ChevronDown;
            }
        }
    }
}