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

using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Rulesets.Objects.Drawables;
using osu.Game.Rulesets.Osu.Objects.Drawables.Pieces;
using OpenTK;
using OpenTK.Graphics;
using osu.Game.Graphics;
using osu.Framework.Extensions.Color4Extensions;
using osu.Framework.Allocation;
using osu.Game.Screens.Ranking;

namespace osu.Game.Rulesets.Osu.Objects.Drawables
{
    public class DrawableSpinner : DrawableOsuHitObject
    {
        private readonly Spinner spinner;

        private readonly SpinnerDisc disc;
        private readonly SpinnerTicks ticks;

        private readonly Container mainContainer;

        private readonly SpinnerBackground background;
        private readonly Container circleContainer;
        private readonly CirclePiece circle;

        private readonly TextAwesome symbol;

        private Color4 normalColour;
        private Color4 completeColour;

        public DrawableSpinner(Spinner s) : base(s)
        {
            AlwaysReceiveInput = true;

            Origin = Anchor.Centre;
            Position = s.Position;

            RelativeSizeAxes = Axes.Both;

            // we are slightly bigger than our parent, to clip the top and bottom of the circle
            Height = 1.2f;

            spinner = s;

            Children = new Drawable[]
            {
                circleContainer = new Container
                {
                    AutoSizeAxes = Axes.Both,
                    Anchor = Anchor.Centre,
                    Origin = Anchor.Centre,
                    Children = new Drawable[]
                    {
                        circle = new CirclePiece
                        {
                            Position = Vector2.Zero,
                            Anchor = Anchor.Centre,
                        },
                        new RingPiece(),
                        symbol = new TextAwesome
                        {
                            Anchor = Anchor.Centre,
                            Origin = Anchor.Centre,
                            UseFullGlyphHeight = true,
                            TextSize = 48,
                            Icon = FontAwesome.fa_asterisk,
                            Shadow = false,
                        }
                    }
                },
                mainContainer = new AspectContainer
                {
                    Anchor = Anchor.Centre,
                    Origin = Anchor.Centre,
                    RelativeSizeAxes = Axes.Y,
                    Children = new Drawable[]
                    {
                        background = new SpinnerBackground
                        {
                            Alpha = 0.2f,
                            Anchor = Anchor.Centre,
                            Origin = Anchor.Centre,
                        },
                        disc = new SpinnerDisc(spinner)
                        {
                            Scale = Vector2.Zero,
                            Anchor = Anchor.Centre,
                            Origin = Anchor.Centre,
                        },
                        circleContainer.CreateProxy(),
                        ticks = new SpinnerTicks
                        {
                            Anchor = Anchor.Centre,
                            Origin = Anchor.Centre,
                        },
                    }
                },
            };
        }

        public float Progress => MathHelper.Clamp(disc.RotationAbsolute / 360 / spinner.SpinsRequired, 0, 1);

        protected override void CheckJudgement(bool userTriggered)
        {
            if (Time.Current < HitObject.StartTime) return;

            if (Progress >= 1 && !disc.Complete)
            {
                disc.Complete = true;

                disc.FadeAccent(completeColour, 500);
                background.FadeAccent(completeColour, 500);
                circle.FadeColour(completeColour, 500);
            }

            if (!userTriggered && Time.Current >= spinner.EndTime)
            {
                if (Progress >= 1)
                {
                    Judgement.Score = OsuScoreResult.Hit300;
                    Judgement.Result = HitResult.Hit;
                }
                else if (Progress > .9)
                {
                    Judgement.Score = OsuScoreResult.Hit100;
                    Judgement.Result = HitResult.Hit;
                }
                else if (Progress > .75)
                {
                    Judgement.Score = OsuScoreResult.Hit50;
                    Judgement.Result = HitResult.Hit;
                }
                else
                {
                    Judgement.Score = OsuScoreResult.Miss;
                    if (Time.Current >= spinner.EndTime)
                        Judgement.Result = HitResult.Miss;
                }
            }
        }

        [BackgroundDependencyLoader]
        private void load(OsuColour colours)
        {
            normalColour = colours.BlueDark;
            completeColour = colours.YellowLight.Opacity(0.8f);

            disc.AccentColour = normalColour;
            background.AccentColour = normalColour;
            circle.Colour = normalColour;
        }

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

            circle.Rotation = disc.Rotation;
            ticks.Rotation = disc.Rotation;

            float relativeCircleScale = spinner.Scale * circle.DrawHeight / mainContainer.DrawHeight;
            disc.ScaleTo(relativeCircleScale + (1 - relativeCircleScale) * Progress, 200, EasingTypes.OutQuint);

            symbol.RotateTo(disc.Rotation / 2, 500, EasingTypes.OutQuint);
        }

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

            circleContainer.ScaleTo(spinner.Scale * 0.3f);
            circleContainer.ScaleTo(spinner.Scale, TIME_PREEMPT / 1.4f, EasingTypes.OutQuint);

            disc.RotateTo(-720);
            symbol.RotateTo(-720);

            mainContainer.ScaleTo(0);
            mainContainer.ScaleTo(spinner.Scale * circle.DrawHeight / DrawHeight * 1.4f, TIME_PREEMPT - 150, EasingTypes.OutQuint);

            mainContainer.Delay(TIME_PREEMPT - 150);
            mainContainer.ScaleTo(1, 500, EasingTypes.OutQuint);
        }

        protected override void UpdateCurrentState(ArmedState state)
        {
            Delay(spinner.Duration, true);

            FadeOut(160);

            switch (state)
            {
                case ArmedState.Hit:
                    ScaleTo(Scale * 1.2f, 320, EasingTypes.Out);
                    Expire();
                    break;
                case ArmedState.Miss:
                    ScaleTo(Scale * 0.8f, 320, EasingTypes.In);
                    Expire();
                    break;
            }
        }
    }
}