/* 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 ApiGenerator.Configuration;

namespace ApiGenerator.Domain.Code.HighLevel.Methods
{
    public class InitializerMethod : MethodSyntaxBase
    {
        public InitializerMethod(CsharpNames names, string link, string summary) : base(names, link, summary) { }

        public string MethodName => CsharpNames.MethodName;

        public string ArgumentType => CsharpNames.GenericOrNonGenericInterfacePreference;

        public override string MethodGenerics =>
            CodeConfiguration.GenericOnlyInterfaces.Contains(CsharpNames.RequestInterfaceName)
                ? CsharpNames.GenericsDeclaredOnRequest
                : CsharpNames.GenericsDeclaredOnResponse;

        public override string GenericWhereClause =>
            string.Join(" ", CsharpNames.SplitGeneric(MethodGenerics)
                .Where(g=>g.Contains("Document"))
                .Select(g=>$"where {g} : class")
            );

        private bool IsCatMethod => CsharpNames.Namespace == "Cat";

        public string DispatchMethod => IsCatMethod ? "DoCat" : "DoRequest";

        /// <summary>
        /// Dispatch needs a class instance so if the response is an interface transform it to the concrete implementation
        /// when calling into DoRequest
        /// </summary>
        private string DispatchResponseName => InterfaceResponse ? ResponseName.Substring(1, ResponseName.Length - 1) : ResponseName;

        public string DispatchGenerics => IsCatMethod
            ? $"<{ArgumentType},{CsharpNames.ParametersName},{CsharpNames.RequestName.Replace("Request", "Record")}>"
            : $"<{ArgumentType},{DispatchResponseName}>";

        public string DispatchParameters => IsCatMethod
            ? "request"
            : CsharpNames.CustomResponseBuilderPerRequestOverride(out var builder)
                ? $"request, ResponseBuilder(request.RequestParameters, {builder})"
                : "request, request.RequestParameters";
    }
}