// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE

using System.Linq;
using OpenTK;
using OpenTK.Graphics;
using osu.Framework.Allocation;
using osu.Framework.Extensions.Color4Extensions;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Textures;
using osu.Framework.Localisation;
using osu.Game.Database;
using osu.Game.Graphics;
using osu.Game.Graphics.Sprites;
using osu.Framework.Graphics.Shapes;

namespace osu.Game.Overlays.Direct
{
    public class DirectGridPanel : DirectPanel
    {
        private const float horizontal_padding = 10;
        private const float vertical_padding = 5;

        private FillFlowContainer bottomPanel;

        public DirectGridPanel(BeatmapSetInfo beatmap) : base(beatmap)
        {
            Height = 140 + vertical_padding; //full height of all the elements plus vertical padding (autosize uses the image)
            CornerRadius = 4;
            Masking = true;

            EdgeEffect = new EdgeEffectParameters
            {
                Type = EdgeEffectType.Shadow,
                Offset = new Vector2(0f, 1f),
                Radius = 3f,
                Colour = Color4.Black.Opacity(0.25f),
            };
        }

        protected override void LoadComplete()
        {
            base.LoadComplete();

            FadeInFromZero(200, EasingTypes.Out);
            bottomPanel.LayoutDuration = 200;
            bottomPanel.LayoutEasing = EasingTypes.Out;
            bottomPanel.Origin = Anchor.BottomLeft;
        }

        [BackgroundDependencyLoader]
        private void load(OsuColour colours, LocalisationEngine localisation, TextureStore textures)
        {
            Children = new[]
            {
                new Box
                {
                    RelativeSizeAxes = Axes.Both,
                    Colour = Color4.Black,
                },
                GetBackground(textures),
                new Box
                {
                    RelativeSizeAxes = Axes.Both,
                    Colour = Color4.Black.Opacity(0.5f),
                },
                bottomPanel = new FillFlowContainer
                {
                    Anchor = Anchor.BottomLeft,
                    Origin = Anchor.TopLeft,
                    Direction = FillDirection.Vertical,
                    RelativeSizeAxes = Axes.X,
                    AutoSizeAxes = Axes.Y,
                    Spacing = new Vector2(0f, vertical_padding),
                    Children = new Drawable[]
                    {
                        new FillFlowContainer
                        {
                            AutoSizeAxes = Axes.Both,
                            Padding = new MarginPadding { Left = horizontal_padding, Right = horizontal_padding },
                            Direction = FillDirection.Vertical,
                            Children = new[]
                            {
                                new OsuSpriteText
                                {
                                    Text = localisation.GetUnicodePreference(SetInfo.Metadata.TitleUnicode, SetInfo.Metadata.Title),
                                    TextSize = 18,
                                    Font = @"Exo2.0-BoldItalic",
                                },
                                new OsuSpriteText
                                {
                                    Text = localisation.GetUnicodePreference(SetInfo.Metadata.ArtistUnicode, SetInfo.Metadata.Artist),
                                    Font = @"Exo2.0-BoldItalic",
                                },
                            },
                        },
                        new Container
                        {
                            RelativeSizeAxes = Axes.X,
                            AutoSizeAxes = Axes.Y,
                            Children = new Drawable[]
                            {
                                new Box
                                {
                                    RelativeSizeAxes = Axes.Both,
                                },
                                new FillFlowContainer
                                {
                                    RelativeSizeAxes = Axes.X,
                                    AutoSizeAxes = Axes.Y,
                                    Direction = FillDirection.Vertical,
                                    Padding = new MarginPadding
                                    {
                                        Top = vertical_padding,
                                        Bottom = vertical_padding,
                                        Left = horizontal_padding,
                                        Right = horizontal_padding,
                                    },
                                    Children = new Drawable[]
                                    {
                                        new FillFlowContainer
                                        {
                                            AutoSizeAxes = Axes.Both,
                                            Direction = FillDirection.Horizontal,
                                            Children = new[]
                                            {
                                                new OsuSpriteText
                                                {
                                                    Text = "mapped by ",
                                                    TextSize = 14,
                                                    Shadow = false,
                                                    Colour = colours.Gray5,
                                                },
                                                new OsuSpriteText
                                                {
                                                    Text = SetInfo.Metadata.Author,
                                                    TextSize = 14,
                                                    Font = @"Exo2.0-SemiBoldItalic",
                                                    Shadow = false,
                                                    Colour = colours.BlueDark,
                                                },
                                            },
                                        },
                                        new Container
                                        {
                                            AutoSizeAxes = Axes.X,
                                            Height = 14,
                                            Children = new[]
                                            {
                                                new OsuSpriteText
                                                {
                                                    Text = $"from {SetInfo.Metadata.Source}",
                                                    TextSize = 14,
                                                    Shadow = false,
                                                    Colour = colours.Gray5,
                                                    Alpha = string.IsNullOrEmpty(SetInfo.Metadata.Source) ? 0f : 1f,
                                                },
                                            },
                                        },
                                        new FillFlowContainer
                                        {
                                            AutoSizeAxes = Axes.X,
                                            Height = 20,
                                            Margin = new MarginPadding { Top = vertical_padding, Bottom = vertical_padding },
                                            Children = GetDifficultyIcons(),
                                        },
                                    },
                                },
                            },
                        },
                    },
                },
                new FillFlowContainer
                {
                    Anchor = Anchor.TopRight,
                    Origin = Anchor.TopRight,
                    AutoSizeAxes = Axes.Both,
                    Direction = FillDirection.Vertical,
                    Margin = new MarginPadding { Top = vertical_padding, Right = vertical_padding },
                    Children = new[]
                    {
                        new Statistic(FontAwesome.fa_play_circle, SetInfo.Beatmaps.FirstOrDefault()?.OnlineInfo.PlayCount ?? 0)
                        {
                            Margin = new MarginPadding { Right = 1 },
                        },
                        new Statistic(FontAwesome.fa_heart, SetInfo.Beatmaps.FirstOrDefault()?.OnlineInfo.FavouriteCount ?? 0),
                    },
                },
            };
        }
    }
}