// 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.Collections.Generic;
using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Configuration;
using osu.Game.Graphics;
using osu.Game.Localisation.HUD;
using osu.Game.Rulesets.Objects;

namespace osu.Game.Screens.Play.HUD
{
    public partial class ArgonSongProgress : SongProgress
    {
        private readonly SongProgressInfo info;
        private readonly ArgonSongProgressGraph graph;
        private readonly ArgonSongProgressBar bar;
        private readonly Container graphContainer;
        private readonly Container content;

        private const float bar_height = 10;

        [SettingSource(typeof(SongProgressStrings), nameof(SongProgressStrings.ShowGraph), nameof(SongProgressStrings.ShowGraphDescription))]
        public Bindable<bool> ShowGraph { get; } = new BindableBool(true);

        [Resolved]
        private Player? player { get; set; }

        public ArgonSongProgress()
        {
            RelativeSizeAxes = Axes.X;
            AutoSizeAxes = Axes.Y;

            Anchor = Anchor.BottomCentre;
            Origin = Anchor.BottomCentre;
            Masking = true;
            CornerRadius = 5;

            Child = content = new Container
            {
                RelativeSizeAxes = Axes.X,
                Children = new Drawable[]
                {
                    info = new SongProgressInfo
                    {
                        Origin = Anchor.TopLeft,
                        Name = "Info",
                        Anchor = Anchor.TopLeft,
                        RelativeSizeAxes = Axes.X,
                        ShowProgress = false
                    },
                    bar = new ArgonSongProgressBar(bar_height)
                    {
                        Name = "Seek bar",
                        Origin = Anchor.BottomLeft,
                        Anchor = Anchor.BottomLeft,
                        OnSeek = time => player?.Seek(time),
                    },
                    graphContainer = new Container
                    {
                        Anchor = Anchor.BottomLeft,
                        Origin = Anchor.BottomLeft,
                        Masking = true,
                        CornerRadius = 5,
                        Child = graph = new ArgonSongProgressGraph
                        {
                            Name = "Difficulty graph",
                            RelativeSizeAxes = Axes.Both,
                            Blending = BlendingParameters.Additive
                        },
                        RelativeSizeAxes = Axes.X,
                    },
                }
            };
        }

        [BackgroundDependencyLoader]
        private void load()
        {
            info.TextColour = Colour4.White;
            info.Font = OsuFont.Torus.With(size: 18, weight: FontWeight.Bold);
        }

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

            Interactive.BindValueChanged(_ => bar.Interactive = Interactive.Value, true);
            ShowGraph.BindValueChanged(_ => updateGraphVisibility(), true);
        }

        protected override void UpdateObjects(IEnumerable<HitObject> objects)
        {
            graph.Objects = objects;

            info.StartTime = bar.StartTime = FirstHitTime;
            info.EndTime = bar.EndTime = LastHitTime;
        }

        private void updateGraphVisibility()
        {
            graph.FadeTo(ShowGraph.Value ? 1 : 0, 200, Easing.In);
        }

        protected override void Update()
        {
            base.Update();
            content.Height = bar.Height + bar_height + info.Height;
            graphContainer.Height = bar.Height;
        }

        protected override void UpdateProgress(double progress, bool isIntro)
        {
            bar.TrackTime = GameplayClock.CurrentTime;

            if (isIntro)
                bar.CurrentTime = 0;
            else
                bar.CurrentTime = FrameStableClock.CurrentTime;
        }
    }
}