using System.IO;
using System.Linq;
using Core.Common.TestUtils;
using Core.Common.Utils.IO;
using log4net;
using NUnit.Framework;

namespace Core.Common.DelftTools.Tests
{
    [TestFixture]
    public class ProjectStructureValidation
    {
        private static readonly ILog log = LogManager.GetLogger(typeof(ProjectStructureValidation));

        private static readonly string[] ignoreList = new[]
        {
            ".svn",
            "bin"
        }; // TODO: should not be required to put .svn here!

        [Test]
        [Ignore("WIP")]
        public void ValidateTestTreeHasSameStructureAsSrc()
        {
            LogHelper.ConfigureLogging();
            ValidateDirectoriesAreMirrored(@"..\..\..\..\..\src", @"..\..\..\..\..\test");
        }

        private static void ValidateDirectoriesAreMirrored(string sourceDir, string mirrorDir)
        {
            //brearth first directory structure matching
            //validate local directory structure
            //check if each dir of the mirror is available in source
            var relativeSourceSubDirectories = FileUtils.GetDirectoriesRelative(sourceDir);
            var relativeMirrorSubDirectories = FileUtils.GetDirectoriesRelative(mirrorDir);
            log.DebugFormat("Comparing {0} to {1}", sourceDir, mirrorDir);

            foreach (string mirrorSubDir in relativeMirrorSubDirectories)
            {
                if (!relativeSourceSubDirectories.Contains(mirrorSubDir))
                {
                    Assert.Fail("Directory \n {0} \n does not exist in \n {1} \n but does exist in mirror \n {2} ", Path.GetFullPath(Path.Combine(mirrorDir, mirrorSubDir))
                                , Path.GetFullPath(sourceDir), Path.GetFullPath(mirrorDir));
                }
            }
            //traverse into the subdirs of the mirror which are not in our ignore list
            var subdirs = from d in Directory.GetDirectories(mirrorDir)
                          where !ignoreList.Any(d.EndsWith)
                          select d;
            foreach (string mirrorSubDir in subdirs)
            {
                var sourceSubDir = mirrorSubDir.Replace(mirrorDir, sourceDir);
                ValidateDirectoriesAreMirrored(sourceSubDir, mirrorSubDir);
            }
        }
    }
}