// 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 System;
using osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Shapes;
using osuTK;
using osu.Framework.Bindables;
using osu.Framework.Input.Events;
using osu.Game.Beatmaps.Drawables;
using osu.Game.Beatmaps;
using osu.Game.Configuration;
using osu.Game.Graphics.Containers;
using osu.Game.Graphics.UserInterface;
using osuTK.Graphics;
using osu.Game.Rulesets;
using osu.Game.Scoring;

namespace osu.Game.Overlays.BeatmapListing
{
    public class BeatmapListingSearchControl : CompositeDrawable
    {
        /// <summary>
        /// Any time the text box receives key events (even while masked).
        /// </summary>
        public Action TypingStarted;

        public Bindable<string> Query => textBox.Current;

        public BindableList<SearchGeneral> General => generalFilter.Current;

        public Bindable<RulesetInfo> Ruleset => modeFilter.Current;

        public Bindable<SearchCategory> Category => categoryFilter.Current;

        public Bindable<SearchGenre> Genre => genreFilter.Current;

        public Bindable<SearchLanguage> Language => languageFilter.Current;

        public BindableList<SearchExtra> Extra => extraFilter.Current;

        public BindableList<ScoreRank> Ranks => ranksFilter.Current;

        public Bindable<SearchPlayed> Played => playedFilter.Current;

        public Bindable<SearchExplicit> ExplicitContent => explicitContentFilter.Current;

        public BeatmapSetInfo BeatmapSet
        {
            set
            {
                if (value == null || string.IsNullOrEmpty(value.OnlineInfo.Covers.Cover))
                {
                    beatmapCover.FadeOut(600, Easing.OutQuint);
                    return;
                }

                beatmapCover.BeatmapSet = value;
                beatmapCover.FadeTo(0.1f, 200, Easing.OutQuint);
            }
        }

        private readonly BeatmapSearchTextBox textBox;
        private readonly BeatmapSearchMultipleSelectionFilterRow<SearchGeneral> generalFilter;
        private readonly BeatmapSearchRulesetFilterRow modeFilter;
        private readonly BeatmapSearchFilterRow<SearchCategory> categoryFilter;
        private readonly BeatmapSearchFilterRow<SearchGenre> genreFilter;
        private readonly BeatmapSearchFilterRow<SearchLanguage> languageFilter;
        private readonly BeatmapSearchMultipleSelectionFilterRow<SearchExtra> extraFilter;
        private readonly BeatmapSearchScoreFilterRow ranksFilter;
        private readonly BeatmapSearchFilterRow<SearchPlayed> playedFilter;
        private readonly BeatmapSearchFilterRow<SearchExplicit> explicitContentFilter;

        private readonly Box background;
        private readonly UpdateableBeatmapSetCover beatmapCover;

        public BeatmapListingSearchControl()
        {
            AutoSizeAxes = Axes.Y;
            RelativeSizeAxes = Axes.X;
            AddRangeInternal(new Drawable[]
            {
                background = new Box
                {
                    RelativeSizeAxes = Axes.Both
                },
                new Container
                {
                    RelativeSizeAxes = Axes.Both,
                    Masking = true,
                    Child = beatmapCover = new TopSearchBeatmapSetCover
                    {
                        RelativeSizeAxes = Axes.Both,
                        Alpha = 0,
                    }
                },
                new Container
                {
                    AutoSizeAxes = Axes.Y,
                    RelativeSizeAxes = Axes.X,
                    Padding = new MarginPadding
                    {
                        Vertical = 20,
                        Horizontal = 40,
                    },
                    Child = new FillFlowContainer
                    {
                        AutoSizeAxes = Axes.Y,
                        RelativeSizeAxes = Axes.X,
                        Direction = FillDirection.Vertical,
                        Spacing = new Vector2(0, 20),
                        Children = new Drawable[]
                        {
                            textBox = new BeatmapSearchTextBox
                            {
                                RelativeSizeAxes = Axes.X,
                                TypingStarted = () => TypingStarted?.Invoke(),
                            },
                            new ReverseChildIDFillFlowContainer<Drawable>
                            {
                                AutoSizeAxes = Axes.Y,
                                RelativeSizeAxes = Axes.X,
                                Direction = FillDirection.Vertical,
                                Padding = new MarginPadding { Horizontal = 10 },
                                Children = new Drawable[]
                                {
                                    generalFilter = new BeatmapSearchMultipleSelectionFilterRow<SearchGeneral>(@"General"),
                                    modeFilter = new BeatmapSearchRulesetFilterRow(),
                                    categoryFilter = new BeatmapSearchFilterRow<SearchCategory>(@"Categories"),
                                    genreFilter = new BeatmapSearchFilterRow<SearchGenre>(@"Genre"),
                                    languageFilter = new BeatmapSearchFilterRow<SearchLanguage>(@"Language"),
                                    extraFilter = new BeatmapSearchMultipleSelectionFilterRow<SearchExtra>(@"Extra"),
                                    ranksFilter = new BeatmapSearchScoreFilterRow(),
                                    playedFilter = new BeatmapSearchFilterRow<SearchPlayed>(@"Played"),
                                    explicitContentFilter = new BeatmapSearchFilterRow<SearchExplicit>(@"Explicit Content"),
                                }
                            }
                        }
                    }
                }
            });

            categoryFilter.Current.Value = SearchCategory.Leaderboard;
        }

        private IBindable<bool> allowExplicitContent;

        [BackgroundDependencyLoader]
        private void load(OverlayColourProvider colourProvider, OsuConfigManager config)
        {
            background.Colour = colourProvider.Dark6;

            allowExplicitContent = config.GetBindable<bool>(OsuSetting.ShowOnlineExplicitContent);
            allowExplicitContent.BindValueChanged(allow =>
            {
                ExplicitContent.Value = allow.NewValue ? SearchExplicit.Show : SearchExplicit.Hide;
            }, true);
        }

        public void TakeFocus() => textBox.TakeFocus();

        private class BeatmapSearchTextBox : SearchTextBox
        {
            /// <summary>
            /// Any time the text box receives key events (even while masked).
            /// </summary>
            public Action TypingStarted;

            protected override Color4 SelectionColour => Color4.Gray;

            public BeatmapSearchTextBox()
            {
                PlaceholderText = @"type in keywords...";
            }

            protected override bool OnKeyDown(KeyDownEvent e)
            {
                if (!base.OnKeyDown(e))
                    return false;

                TypingStarted?.Invoke();
                return true;
            }
        }

        private class TopSearchBeatmapSetCover : UpdateableBeatmapSetCover
        {
            protected override bool TransformImmediately => true;
        }
    }
}