// Copyright (c) 2007 Omer Rauchwerger (a.k.a rauchy) (omer@rauchy.net)
// All rights reserved.
//
// This file is part of Regionerate.
// 
// This program is free software; you can redistribute it and/or modify it 
// under the terms of the GNU General Public License as published by 
// the Free Software Foundation; either version 3 of the License, 
// or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
using Rauchy.Regionerate.ServiceLayer.Components.Projects;

namespace Rauchy.Regionerate.ServiceLayer.Components
{
    /// <summary>
    /// Provides access to the <see cref="Project"/> object in a Visual Studio solution file.
    /// </summary>
    public class Solution : IEnumerable<Project>
    {
        #region Fields (1) 

        private readonly IList<Project> _projects;

        #endregion Fields 

        #region Constructors (1) 

        /// <summary>
        /// Initializes a new instance of the <see cref="Solution"/> class.
        /// </summary>
        /// <param name="path">The solution file path.</param>
        public Solution( string path )
        {
            Regex regex = new Regex( ".*\\\"(?<ProjectPath>.*?\\.csproj)\\\"" );
            string text = File.ReadAllText( path );
            Match match = regex.Match( text );

            string solutionDirectory = Path.GetDirectoryName( path );
            _projects = new List<Project>();

            while ( match.Success )
            {
                string projectName = match.Groups[ "ProjectPath" ].Value;
                string projectPath = Path.Combine( solutionDirectory, projectName );

                Project project = new CSharpProject( projectPath );
                _projects.Add( project );

                match = match.NextMatch();
            }
        }

        #endregion Constructors 

        #region Methods (2) 

        // Public Methods (1) 

        ///<summary>
        ///Returns an enumerator that iterates through the collection.
        ///</summary>
        ///
        ///<returns>
        ///A <see cref="T:System.Collections.Generic.IEnumerator`1"></see> that can be used to iterate through the collection.
        ///</returns>
        ///<filterpriority>1</filterpriority>
        public IEnumerator<Project> GetEnumerator()
        {
            return _projects.GetEnumerator();
        }

        // Private Methods (1) 

        ///<summary>
        ///Returns an enumerator that iterates through a collection.
        ///</summary>
        ///
        ///<returns>
        ///An <see cref="T:System.Collections.IEnumerator"></see> object that can be used to iterate through the collection.
        ///</returns>
        ///<filterpriority>2</filterpriority>
        IEnumerator IEnumerable.GetEnumerator()
        {
            return GetEnumerator();
        }

        #endregion Methods 
    }
}