using System;
using System.Linq;
using NUnit.Framework;
using NUnit.Framework.Interfaces;
using NUnit.Framework.Internal;

namespace UnityEditor.TestTools
{
    [AttributeUsage(AttributeTargets.Assembly | AttributeTargets.Class | AttributeTargets.Method)]
    public class RequirePlatformSupportAttribute : NUnitAttribute, IApplyToTest
    {
        public RequirePlatformSupportAttribute(params BuildTarget[] platforms)
        {
            this.platforms = platforms;
        }

        public BuildTarget[] platforms { get; private set; }

        void IApplyToTest.ApplyToTest(Test test)
        {
            test.Properties.Add(PropertyNames.Category, string.Format("RequirePlatformSupport({0})", string.Join(", ", platforms.Select(p => p.ToString()).OrderBy(p => p).ToArray())));

            if (!platforms.All(p => BuildPipeline.IsBuildTargetSupported(BuildTargetGroup.Unknown, p)))
            {
                var missingPlatforms = platforms.Where(p => !BuildPipeline.IsBuildTargetSupported(BuildTargetGroup.Unknown, p)).Select(p => p.ToString()).ToArray();
                string skipReason = "Test cannot be run as it requires support for the following platforms to be installed: " + string.Join(", ", missingPlatforms);

                test.RunState = RunState.Skipped;
                test.Properties.Add(PropertyNames.SkipReason, skipReason);
            }
        }
    }
}