// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE

using System;
using System.Collections.Generic;
using NUnit.Framework;
using osu.Framework.MathUtils;
using osu.Game.Beatmaps;
using osu.Game.Rulesets.Mania.Beatmaps;
using osu.Game.Rulesets.Mania.Objects;
using osu.Game.Rulesets.Objects;
using osu.Game.Rulesets.Objects.Types;
using osu.Game.Tests.Beatmaps;

namespace osu.Game.Rulesets.Mania.Tests
{
    [TestFixture]
    public class ManiaBeatmapConversionTest : BeatmapConversionTest<ManiaConvertMapping, ConvertValue>
    {
        protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";

        [TestCase("basic")]
        public new void Test(string name)
        {
            base.Test(name);
        }

        protected override IEnumerable<ConvertValue> CreateConvertValue(HitObject hitObject)
        {
            yield return new ConvertValue
            {
                StartTime = hitObject.StartTime,
                EndTime = (hitObject as IHasEndTime)?.EndTime ?? hitObject.StartTime,
                Column = ((ManiaHitObject)hitObject).Column
            };
        }

        protected override ManiaConvertMapping CreateConvertMapping() => new ManiaConvertMapping(Converter);

        protected override Ruleset CreateRuleset() => new ManiaRuleset();
    }

     public class ManiaConvertMapping : ConvertMapping<ConvertValue>, IEquatable<ManiaConvertMapping>
     {
         public uint RandomW;
         public uint RandomX;
         public uint RandomY;
         public uint RandomZ;

         public ManiaConvertMapping()
         {
         }

         public ManiaConvertMapping(IBeatmapConverter converter)
         {
             var maniaConverter = (ManiaBeatmapConverter)converter;
             RandomW = maniaConverter.Random.W;
             RandomX = maniaConverter.Random.X;
             RandomY = maniaConverter.Random.Y;
             RandomZ = maniaConverter.Random.Z;
         }

         public bool Equals(ManiaConvertMapping other) => other != null && RandomW == other.RandomW && RandomX == other.RandomX && RandomY == other.RandomY && RandomZ == other.RandomZ;
         public override bool Equals(ConvertMapping<ConvertValue> other) => base.Equals(other) && Equals(other as ManiaConvertMapping);
     }

    public struct ConvertValue : IEquatable<ConvertValue>
    {
        /// <summary>
        /// A sane value to account for osu!stable using ints everwhere.
        /// </summary>
        private const float conversion_lenience = 2;

        public double StartTime;
        public double EndTime;
        public int Column;

        public bool Equals(ConvertValue other)
            => Precision.AlmostEquals(StartTime, other.StartTime, conversion_lenience)
               && Precision.AlmostEquals(EndTime, other.EndTime, conversion_lenience)
               && Column == other.Column;
    }
}