//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
//     file="StepObjectConstructor.cs"
//     Project: StgSharp
//     AuthorGroup: Nitload Space
//     Copyright (c) Nitload Space. All rights reserved.
//     
//     Permission is hereby granted, free of charge, to any person 
//     obtaining a copy of this software and associated documentation 
//     files (the “Software”), to deal in the Software without restriction, 
//     including without limitation the rights to use, copy, modify, merge,
//     publish, distribute, sublicense, and/or sell copies of the Software, 
//     and to permit persons to whom the Software is furnished to do so, 
//     subject to the following conditions:
//     
//     The above copyright notice and 
//     this permission notice shall be included in all copies 
//     or substantial portions of the Software.
//     
//     THE SOFTWARE IS PROVIDED “AS IS”, 
//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//     
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace StgSharp.Modeling.Step
{
    public class StepObjectConstructor
    {

        private static Regex regex = new Regex(
            @"(?<param1>.+?(\)|'\s?\)|'))\s?(?<sepcomma>,)\s?(?<other>(.|\(|\(\s?').+)",
            RegexOptions.Compiled );

        private readonly int _id;
        private readonly List<string> _paramList;
        private string _caller;

        public StepObjectConstructor( int id, string caller, string parameters )
        {
            _caller = caller;
            _paramList = new List<string>();
            SplitParameter( parameters );
        }

        public string this[ int paramIndex ]
        {
            get => _paramList[ paramIndex ];
        }

        public ReadOnlyCollection<string> ParamList
        {
            get => _paramList.AsReadOnly();
        }

        public static string TempCallerName
        {
            get => "TEMPCALLER";
        }

        public string Caller
        {
            get => _caller;
            internal set => _caller = value;
        }

        public static StepObjectConstructor CreateTempExpression( int id )
        {
            return new StepObjectConstructor( id, "TEMPCALLER", string.Empty );
        }

        private void SplitParameter( string parameters )
        {
            if( string.IsNullOrEmpty( parameters ) || string.IsNullOrWhiteSpace( parameters ) ) {
                return;
            }
            Match match = regex.Match( parameters );
            while( match.Success )
            {
                _paramList.Add( match.Groups[ "param1" ].Value );
                parameters = match.Groups[ "other" ].Value;
                match = regex.Match( parameters );
            }
            _paramList.Add( parameters );
        }

    }
}