// Copyright (c) 2007-2018 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.Beatmaps;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.Rulesets.Osu.Objects;
using osu.Game.Rulesets.Osu.Objects.Drawables;
using osu.Game.Tests.Visual;
using OpenTK;
using System.Collections.Generic;
using System;
using osu.Game.Rulesets.Mods;
using System.Linq;
using NUnit.Framework;
using osu.Game.Rulesets.Scoring;

namespace osu.Game.Rulesets.Osu.Tests
{
    [TestFixture]
    public class TestCaseHitCircle : OsuTestCase
    {
        public override IReadOnlyList<Type> RequiredTypes => new[]
        {
            typeof(DrawableHitCircle)
        };

        private readonly Container content;
        protected override Container<Drawable> Content => content;

        private int depthIndex;
        protected readonly List<Mod> Mods = new List<Mod>();

        public TestCaseHitCircle()
        {
            base.Content.Add(content = new OsuInputManager(new RulesetInfo { ID = 0 }));

            AddStep("Miss Big Single", () => testSingle(2));
            AddStep("Miss Medium Single", () => testSingle(5));
            AddStep("Miss Small Single", () => testSingle(7));
            AddStep("Hit Big Single", () => testSingle(2, true));
            AddStep("Hit Medium Single", () => testSingle(5, true));
            AddStep("Hit Small Single", () => testSingle(7, true));
            AddStep("Miss Big Stream", () => testStream(2));
            AddStep("Miss Medium Stream", () => testStream(5));
            AddStep("Miss Small Stream", () => testStream(7));
            AddStep("Hit Big Stream", () => testStream(2, true));
            AddStep("Hit Medium Stream", () => testStream(5, true));
            AddStep("Hit Small Stream", () => testStream(7, true));
        }

        private void testSingle(float circleSize, bool auto = false, double timeOffset = 0, Vector2? positionOffset = null)
        {
            positionOffset = positionOffset ?? Vector2.Zero;

            var circle = new HitCircle
            {
                StartTime = Time.Current + 1000 + timeOffset,
                Position = positionOffset.Value,
            };

            circle.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty { CircleSize = circleSize });

            var drawable = new TestDrawableHitCircle(circle, auto)
            {
                Anchor = Anchor.Centre,
                Depth = depthIndex++
            };

            foreach (var mod in Mods.OfType<IApplicableToDrawableHitObjects>())
                mod.ApplyToDrawableHitObjects(new[] { drawable });

            Add(drawable);
        }

        private void testStream(float circleSize, bool auto = false)
        {
            Vector2 pos = new Vector2(-250, 0);

            for (int i = 0; i <= 1000; i += 100)
            {
                testSingle(circleSize, auto, i, pos);
                pos.X += 50;
            }
        }

        protected class TestDrawableHitCircle : DrawableHitCircle
        {
            private readonly bool auto;

            public TestDrawableHitCircle(HitCircle h, bool auto) : base(h)
            {
                this.auto = auto;
            }

            public void TriggerJudgement() => UpdateResult(true);

            protected override void CheckForResult(bool userTriggered, double timeOffset)
            {
                if (auto && !userTriggered && timeOffset > 0)
                {
                    // force success
                    ApplyResult(r => r.Type = HitResult.Great);
                }
                else
                    base.CheckForResult(userTriggered, timeOffset);
            }
        }
    }
}