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

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.Shapes;
using osu.Framework.Localisation;
using osu.Game.Database;
using osu.Game.Graphics;
using osu.Game.Graphics.Sprites;
using osu.Game.Online.Multiplayer;
using osu.Game.Users;

namespace osu.Game.Screens.Multiplayer
{
    public class DrawableRoom : ClickableContainer
    {
        private const float content_padding = 5;
        private const float height = 90;

        private readonly Box sideStrip;
        private readonly UpdateableAvatar avatar;
        private readonly OsuSpriteText name;
        private readonly Container flagContainer;
        private readonly OsuSpriteText host;
        private readonly OsuSpriteText rankBounds;
        private readonly OsuSpriteText status;
        private readonly FillFlowContainer<OsuSpriteText> beatmapInfoFlow;
        private readonly OsuSpriteText beatmapTitle;
        private readonly OsuSpriteText beatmapDash;
        private readonly OsuSpriteText beatmapArtist;

        private OsuColour colours;
        private LocalisationEngine localisation;

        public readonly Room Room;

        public DrawableRoom(Room room)
        {
            Room = room;

            RelativeSizeAxes = Axes.X;
            Height = height;
            CornerRadius = 5;
            Masking = true;
            EdgeEffect = new EdgeEffectParameters
            {
                Type = EdgeEffectType.Shadow,
                Colour = Color4.Black.Opacity(40),
                Radius = 5,
            };

            Children = new Drawable[]
            {
                new Box
                {
                    RelativeSizeAxes = Axes.Both,
                    Colour = OsuColour.Gray(34),
                },
                sideStrip = new Box
                {
                    RelativeSizeAxes = Axes.Y,
                    Width = content_padding,
                },
                avatar = new UpdateableAvatar
                {
                    Size = new Vector2(Height - content_padding * 2),
                    Masking = true,
                    CornerRadius = 5f,
                    Margin = new MarginPadding { Left = content_padding * 2, Top = content_padding },
                },
                new Container
                {
                    RelativeSizeAxes = Axes.Both,
                    Padding = new MarginPadding { Top = content_padding, Bottom = content_padding, Left = Height + content_padding * 2, Right = content_padding },
                    Children = new Drawable[]
                    {
                        new FillFlowContainer
                        {
                            RelativeSizeAxes = Axes.X,
                            AutoSizeAxes = Axes.Y,
                            Direction = FillDirection.Vertical,
                            Spacing = new Vector2(5f),
                            Children = new Drawable[]
                            {
                                name = new OsuSpriteText
                                {
                                    TextSize = 18,
                                },
                                new Container
                                {
                                    RelativeSizeAxes = Axes.X,
                                    Height = 20f,
                                    Children = new Drawable[]
                                    {
                                        new FillFlowContainer
                                        {
                                            AutoSizeAxes = Axes.X,
                                            RelativeSizeAxes = Axes.Y,
                                            Direction = FillDirection.Horizontal,
                                            Spacing = new Vector2(5f, 0f),
                                            Children = new Drawable[]
                                            {
                                                flagContainer = new Container
                                                {
                                                    Width = 30f,
                                                    RelativeSizeAxes = Axes.Y,
                                                },
                                                new Container
                                                {
                                                    Width = 40f,
                                                    RelativeSizeAxes = Axes.Y,
                                                },
                                                new OsuSpriteText
                                                {
                                                    Text = "hosted by",
                                                    Anchor = Anchor.CentreLeft,
                                                    Origin = Anchor.CentreLeft,
                                                    TextSize = 14,
                                                },
                                                host = new OsuSpriteText
                                                {
                                                    Anchor = Anchor.CentreLeft,
                                                    Origin = Anchor.CentreLeft,
                                                    TextSize = 14,
                                                    Font = @"Exo2.0-BoldItalic",
                                                },
                                            },
                                        },
                                        rankBounds = new OsuSpriteText
                                        {
                                            Anchor = Anchor.CentreRight,
                                            Origin = Anchor.CentreRight,
                                            Text = "#0 - #0",
                                            TextSize = 14,
                                            Margin = new MarginPadding { Right = 10 },
                                        },
                                    },
                                },
                            },
                        },
                        new FillFlowContainer
                        {
                            Anchor = Anchor.BottomLeft,
                            Origin = Anchor.BottomLeft,
                            RelativeSizeAxes = Axes.X,
                            AutoSizeAxes = Axes.Y,
                            Direction = FillDirection.Vertical,
                            Margin = new MarginPadding { Bottom = content_padding },
                            Children = new Drawable[]
                            {
                                status = new OsuSpriteText
                                {
                                    TextSize = 14,
                                    Font = @"Exo2.0-Bold",
                                },
                                beatmapInfoFlow = new FillFlowContainer<OsuSpriteText>
                                {
                                    RelativeSizeAxes = Axes.X,
                                    AutoSizeAxes = Axes.Y,
                                    Direction = FillDirection.Horizontal,
                                    Children = new[]
                                    {
                                        beatmapTitle = new OsuSpriteText
                                        {
                                            TextSize = 14,
                                            Font = @"Exo2.0-BoldItalic",
                                        },
                                        beatmapDash = new OsuSpriteText
                                        {
                                            TextSize = 14,
                                            Font = @"Exo2.0-RegularItalic",
                                        },
                                        beatmapArtist = new OsuSpriteText
                                        {
                                            TextSize = 14,
                                            Font = @"Exo2.0-RegularItalic",
                                        },
                                    },
                                },
                            },
                        },
                    },
                },
            };

            Room.Name.ValueChanged += displayName;
            Room.Host.ValueChanged += displayUser;
            Room.Status.ValueChanged += displayStatus;
            Room.Beatmap.ValueChanged += displayBeatmap;
        }

        [BackgroundDependencyLoader]
        private void load(OsuColour colours, LocalisationEngine localisation)
        {
            this.localisation = localisation;
            this.colours = colours;

            beatmapInfoFlow.Colour = rankBounds.Colour = colours.Gray9;
            host.Colour = colours.Blue;

            displayStatus(Room.Status.Value);
        }

        private void displayName(string value)
        {
            name.Text = value;
        }

        private void displayUser(User value)
        {
            avatar.User = value;
            host.Text = value.Username;
            flagContainer.Children = new[] { new DrawableFlag(value.Country?.FlagName ?? @"__") { RelativeSizeAxes = Axes.Both } };
        }

        private void displayStatus(RoomStatus value)
        {
            if (value == null) return;
            status.Text = value.Message;

            foreach (Drawable d in new Drawable[] { sideStrip, status })
                d.FadeColour(value.GetAppropriateColour(colours), 100);
        }

        private void displayBeatmap(BeatmapInfo value)
        {
            if (value != null)
            {
                beatmapTitle.Current = localisation.GetUnicodePreference(value.Metadata.TitleUnicode, value.Metadata.Title);
                beatmapDash.Text = @" - ";
                beatmapArtist.Current = localisation.GetUnicodePreference(value.Metadata.ArtistUnicode, value.Metadata.Artist);
            }
            else
            {
                beatmapTitle.Current = null;
                beatmapArtist.Current = null;

                beatmapTitle.Text = @"Changing map";
                beatmapDash.Text = string.Empty;
                beatmapArtist.Text = string.Empty;
            }
        }

        protected override void Dispose(bool isDisposing)
        {
            Room.Name.ValueChanged -= displayName;
            Room.Host.ValueChanged -= displayUser;
            Room.Status.ValueChanged -= displayStatus;
            Room.Beatmap.ValueChanged -= displayBeatmap;

            base.Dispose(isDisposing);
        }
    }
}