/* 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;
using System.Collections.Generic;
using System.Linq;
using OpenSearch.Stack.ArtifactsApi;

namespace OpenSearch.OpenSearch.Managed.Configuration
{
	public class NodeSettings : List<NodeSetting>
	{
		public NodeSettings()
		{
		}

		public NodeSettings(NodeSettings settings) : base(settings)
		{
		}

		public void Add(string setting)
		{
			var s = setting.Split(new[] {'='}, 2, StringSplitOptions.RemoveEmptyEntries);
			if (s.Length != 2)
				throw new ArgumentException($"Can only add node settings in key=value from but received: {setting}");
			Add(new NodeSetting(s[0], s[1], null));
		}

		public void Add(string key, string value) => Add(new NodeSetting(key, value, null));

		public void Add(string key, string value, string versionRange) =>
			Add(new NodeSetting(key, value, versionRange));

		public string[] ToCommandLineArguments(OpenSearchVersion version)
		{
			var settingArgument = "-E ";
			return this
				//if a node setting is only applicable for a certain version make sure its filtered out
				.Where(s => string.IsNullOrEmpty(s.VersionRange) || version.InRange(s.VersionRange))
				//allow additional settings to take precedence over already DefaultNodeSettings
				//without relying on opensearch to dedup
				.GroupBy(setting => setting.Key)
				.Select(g => g.Last())
				.Select(s => s.Key.StartsWith(settingArgument) ? s.ToString() : $"{settingArgument}{s}")
				.ToArray();
		}
	}
}