/* Copyright (c) Citrix Systems, Inc. 
 * All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met: 
 * 
 * *   Redistributions of source code must retain the above 
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 *     following disclaimer. 
 * *   Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the 
 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
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 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
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 */

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace CFUValidator.CommandLineOptions
{
    public class CommandLineParser
    {
        private readonly string[] args;

        public List<CommandLineArgument> ParsedArguments { get; private set; }

        public CommandLineParser(string[] args, List<CommandLineArgument> argsToParse)
        {
            this.args = args;
            ParsedArguments = argsToParse;
        }

        public void Parse()
        {
            string[] recastArgs = Regex.Split(string.Join(" ", args).Trim(), @"(?=[-])(?<=[ ])");
            foreach (string arg in recastArgs)
            {
                if(String.IsNullOrEmpty(arg))
                    continue;

                string optionSwitch = Regex.Match(arg, "[-]{1}[a-z]{1}").Value.Trim();
                char switchChar = Convert.ToChar(optionSwitch.Substring(1, 1));
                string[] splitArgs = arg.Replace(optionSwitch, "").Trim().Split(' ');

                CommandLineArgument cla = ParsedArguments.FirstOrDefault(c => c.Switch == switchChar);
                if (cla != null)
                {
                    cla.Options = splitArgs.Where(s=>!String.IsNullOrEmpty(s)).ToList();
                    cla.IsActiveOption = true;
                }
            }
        }
    }
}
