/* 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.Runtime.Serialization;
using OpenSearch.Net.Utf8Json;

namespace OpenSearch.Client
{
	[InterfaceDataContract]
	[ReadAs(typeof(ScriptField))]
	public interface IScriptField
	{
		[DataMember(Name = "script")]
		IScript Script { get; set; }
	}

	public class ScriptField : IScriptField
	{
		public IScript Script { get; set; }
	}

	public class ScriptFieldDescriptor
		: DescriptorBase<ScriptFieldDescriptor, IScriptField>, IScriptField
	{
		IScript IScriptField.Script { get; set; }

		public ScriptFieldDescriptor Script(Func<ScriptDescriptor, IScript> scriptSelector) =>
			Assign(scriptSelector, (a, v) => a.Script = v?.Invoke(new ScriptDescriptor()));
	}

	[JsonFormatter(typeof(VerbatimDictionaryKeysFormatter<ScriptFields, IScriptFields, string, IScriptField>))]
	public interface IScriptFields : IIsADictionary<string, IScriptField> { }

	public class ScriptFields : IsADictionaryBase<string, IScriptField>, IScriptFields
	{
		public ScriptFields() { }

		public ScriptFields(IDictionary<string, IScriptField> container) : base(container) { }

		public ScriptFields(Dictionary<string, IScriptField> container) : base(container) { }

		public void Add(string name, IScriptField script) => BackingDictionary.Add(name, script);

		public void Add(string name, IScript script) => BackingDictionary.Add(name, new ScriptField { Script = script });
	}

	public class ScriptFieldsDescriptor : IsADictionaryDescriptorBase<ScriptFieldsDescriptor, IScriptFields, string, IScriptField>
	{
		public ScriptFieldsDescriptor() : base(new ScriptFields()) { }

		public ScriptFieldsDescriptor ScriptField(string name, Func<ScriptDescriptor, IScript> selector) =>
			Assign(name, ToScript(selector?.Invoke(new ScriptDescriptor())));

		private static IScriptField ToScript(IScript script) => script != null ? new ScriptField { Script = script } : null;
	}
}