// 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.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Shapes;
using osu.Game.Graphics;
using osu.Game.Graphics.Sprites;
using osu.Game.Graphics.UserInterface;
using osu.Game.Online.API.Requests.Responses;
using osuTK;
using System;
using System.Collections.Generic;
using osu.Framework.Graphics.UserInterface;
using osu.Game.Online.API.Requests;

namespace osu.Game.Overlays.Rankings
{
    public class SpotlightSelector : VisibilityContainer, IHasCurrentValue<APISpotlight>
    {
        private const int duration = 300;

        private readonly BindableWithCurrent<APISpotlight> current = new BindableWithCurrent<APISpotlight>();
        public readonly Bindable<RankingsSortCriteria> Sort = new Bindable<RankingsSortCriteria>();

        public Bindable<APISpotlight> Current
        {
            get => current.Current;
            set => current.Current = value;
        }

        public IEnumerable<APISpotlight> Spotlights
        {
            get => dropdown.Items;
            set => dropdown.Items = value;
        }

        protected override bool StartHidden => true;

        private readonly Box background;
        private readonly Container content;
        private readonly SpotlightsDropdown dropdown;
        private readonly InfoColumn startDateColumn;
        private readonly InfoColumn endDateColumn;
        private readonly InfoColumn mapCountColumn;
        private readonly InfoColumn participantsColumn;

        public SpotlightSelector()
        {
            RelativeSizeAxes = Axes.X;
            AutoSizeAxes = Axes.Y;
            Add(content = new Container
            {
                RelativeSizeAxes = Axes.X,
                AutoSizeAxes = Axes.Y,
                Children = new Drawable[]
                {
                    background = new Box
                    {
                        RelativeSizeAxes = Axes.Both,
                    },
                    new Container
                    {
                        RelativeSizeAxes = Axes.X,
                        AutoSizeAxes = Axes.Y,
                        Padding = new MarginPadding { Horizontal = UserProfileOverlay.CONTENT_X_MARGIN },
                        Child = new FillFlowContainer
                        {
                            RelativeSizeAxes = Axes.X,
                            AutoSizeAxes = Axes.Y,
                            Direction = FillDirection.Vertical,
                            Children = new Drawable[]
                            {
                                new Container
                                {
                                    Margin = new MarginPadding { Vertical = 20 },
                                    RelativeSizeAxes = Axes.X,
                                    Height = 40,
                                    Depth = -float.MaxValue,
                                    Child = dropdown = new SpotlightsDropdown
                                    {
                                        RelativeSizeAxes = Axes.X,
                                        Current = Current
                                    }
                                },
                                new Container
                                {
                                    RelativeSizeAxes = Axes.X,
                                    AutoSizeAxes = Axes.Y,
                                    Children = new Drawable[]
                                    {
                                        new FillFlowContainer
                                        {
                                            AutoSizeAxes = Axes.Both,
                                            Direction = FillDirection.Horizontal,
                                            Spacing = new Vector2(10, 0),
                                            Margin = new MarginPadding { Bottom = 5 },
                                            Children = new Drawable[]
                                            {
                                                startDateColumn = new InfoColumn(@"Start Date"),
                                                endDateColumn = new InfoColumn(@"End Date"),
                                                mapCountColumn = new InfoColumn(@"Map Count"),
                                                participantsColumn = new InfoColumn(@"Participants")
                                            }
                                        },
                                        new RankingsSortTabControl
                                        {
                                            Anchor = Anchor.CentreRight,
                                            Origin = Anchor.CentreRight,
                                            Current = Sort
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            });
        }

        [BackgroundDependencyLoader]
        private void load(OverlayColourProvider colourProvider)
        {
            background.Colour = colourProvider.Dark3;
        }

        public void ShowInfo(GetSpotlightRankingsResponse response)
        {
            startDateColumn.Value = dateToString(response.Spotlight.StartDate);
            endDateColumn.Value = dateToString(response.Spotlight.EndDate);
            mapCountColumn.Value = response.BeatmapSets.Count.ToString();
            participantsColumn.Value = response.Spotlight.Participants?.ToString("N0");
        }

        protected override void PopIn() => content.FadeIn(duration, Easing.OutQuint);

        protected override void PopOut() => content.FadeOut(duration, Easing.OutQuint);

        private string dateToString(DateTimeOffset date) => date.ToString("yyyy-MM-dd");

        private class InfoColumn : FillFlowContainer
        {
            public string Value
            {
                set => valueText.Text = value;
            }

            private readonly OsuSpriteText valueText;

            public InfoColumn(string name)
            {
                AutoSizeAxes = Axes.Both;
                Direction = FillDirection.Vertical;
                Margin = new MarginPadding { Vertical = 10 };
                Children = new Drawable[]
                {
                    new OsuSpriteText
                    {
                        Text = name,
                        Font = OsuFont.GetFont(size: 10, weight: FontWeight.Regular),
                    },
                    new Container
                    {
                        AutoSizeAxes = Axes.X,
                        Height = 20,
                        Child = valueText = new OsuSpriteText
                        {
                            Anchor = Anchor.BottomLeft,
                            Origin = Anchor.BottomLeft,
                            Font = OsuFont.GetFont(size: 20, weight: FontWeight.Light),
                        }
                    }
                };
            }

            [BackgroundDependencyLoader]
            private void load(OverlayColourProvider colourProvider)
            {
                valueText.Colour = colourProvider.Content2;
            }
        }

        private class SpotlightsDropdown : OsuDropdown<APISpotlight>
        {
            private DropdownMenu menu;

            protected override DropdownMenu CreateMenu() => menu = base.CreateMenu().With(m => m.MaxHeight = 400);

            [BackgroundDependencyLoader]
            private void load(OverlayColourProvider colourProvider)
            {
                menu.BackgroundColour = colourProvider.Background5;
                AccentColour = colourProvider.Background6;
            }
        }
    }
}