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

namespace OpenSearch.Client
{
	/// <summary>
	/// The parent_id query can be used to find child documents which belong to a particular parent.
	/// </summary>
	[InterfaceDataContract]
	[ReadAs(typeof(ParentIdQuery))]
	public interface IParentIdQuery : IQuery
	{
		/// <summary>
		/// The id of the parent document to get children for.
		/// </summary>
		[DataMember(Name ="id")]
		Id Id { get; set; }

		/// <summary>
		/// When set to true this will ignore an unmapped type and will not match any documents for
		/// this query. This can be useful when querying multiple indexes which might have different mappings.
		/// </summary>
		[DataMember(Name ="ignore_unmapped")]
		bool? IgnoreUnmapped { get; set; }

		/// <summary>
		/// The child type. This must be a type with _parent field.
		/// </summary>
		[DataMember(Name ="type")]
		RelationName Type { get; set; }
	}

	public class ParentIdQuery : QueryBase, IParentIdQuery
	{
		public Id Id { get; set; }

		public bool? IgnoreUnmapped { get; set; }

		public RelationName Type { get; set; }
		protected override bool Conditionless => IsConditionless(this);

		internal override void InternalWrapInContainer(IQueryContainer c) => c.ParentId = this;

		internal static bool IsConditionless(IParentIdQuery q) => q.Type.IsConditionless() || q.Id.IsConditionless();
	}

	[DataContract]
	public class ParentIdQueryDescriptor<T>
		: QueryDescriptorBase<ParentIdQueryDescriptor<T>, IParentIdQuery>
			, IParentIdQuery where T : class
	{
		protected override bool Conditionless => ParentIdQuery.IsConditionless(this);
		Id IParentIdQuery.Id { get; set; }
		bool? IParentIdQuery.IgnoreUnmapped { get; set; }

		RelationName IParentIdQuery.Type { get; set; }

		public ParentIdQueryDescriptor<T> Id(Id id) => Assign(id, (a, v) => a.Id = v);

		public ParentIdQueryDescriptor<T> Type(RelationName type) => Assign(type, (a, v) => a.Type = v);

		public ParentIdQueryDescriptor<T> Type<TChild>() => Assign(typeof(TChild), (a, v) => a.Type = v);

		public ParentIdQueryDescriptor<T> IgnoreUnmapped(bool? ignoreUnmapped = true) => Assign(ignoreUnmapped, (a, v) => a.IgnoreUnmapped = v);
	}
}