/* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*
*  Licensed to Elasticsearch B.V. under one or more contributor
*  license agreements. See the NOTICE file distributed with
*  this work for additional information regarding copyright
*  ownership. Elasticsearch B.V. licenses this file to you under
*  the Apache License, Version 2.0 (the "License"); you may
*  not use this file except in compliance with the License.
*  You may obtain a copy of the License at
*
* 	http://www.apache.org/licenses/LICENSE-2.0
*
*  Unless required by applicable law or agreed to in writing,
*  software distributed under the License is distributed on an
*  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
*  KIND, either express or implied.  See the License for the
*  specific language governing permissions and limitations
*  under the License.
*/

using System.Linq;
using Xunit;
using Xunit.Abstractions;
using Xunit.Sdk;

namespace OpenSearch.OpenSearch.Xunit.XunitPlumbing
{
	/// <summary>
	///     An Xunit unit test
	/// </summary>
	[XunitTestCaseDiscoverer("OpenSearch.OpenSearch.Xunit.XunitPlumbing.UnitTestDiscoverer",
		"OpenSearch.OpenSearch.Xunit")]
	public class U : FactAttribute
	{
	}

	/// <summary>
	///     A test discoverer used to discover unit tests cases attached
	///     to test methods that are attributed with <see cref="U" /> attribute
	/// </summary>
	public class UnitTestDiscoverer : OpenSearchTestCaseDiscoverer
	{
		public UnitTestDiscoverer(IMessageSink diagnosticMessageSink) : base(diagnosticMessageSink)
		{
		}

		/// <inheritdoc />
		protected override bool SkipMethod(ITestFrameworkDiscoveryOptions discoveryOptions, ITestMethod testMethod,
			out string skipReason)
		{
			skipReason = null;
			var runUnitTests = discoveryOptions.GetValue<bool>(nameof(OpenSearchXunitRunOptions.RunUnitTests));
			if (!runUnitTests) return true;

			var skipTests = GetAttributes<SkipTestAttributeBase>(testMethod)
				.FirstOrDefault(a => a.GetNamedArgument<bool>(nameof(SkipTestAttributeBase.Skip)));

			if (skipTests == null) return false;

			skipReason = skipTests.GetNamedArgument<string>(nameof(SkipTestAttributeBase.Reason));
			return true;
		}
	}
}