//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="StepHeaderLineConstructor"
// 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.Model.Step
{
    public class StepHeaderLineConstructor
    {

        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 StepHeaderLineConstructor(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 StepHeaderLineConstructor CreateTempExpression(int id)
        {
            return new StepHeaderLineConstructor(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);
        }

    }
}