using System.Collections.Generic;
using System.IO;

namespace ElectronNET.CLI.Commands.Actions
{
    public static class DirectoryCopy
    {
        public static void Do(string sourceDirName, string destDirName, bool copySubDirs, List<string> ignoredSubDirs)
        {
            // Get the subdirectories for the specified directory.
            DirectoryInfo dir = new DirectoryInfo(sourceDirName);

            if (!dir.Exists)
            {
                throw new DirectoryNotFoundException(
                    "Source directory does not exist or could not be found: "
                    + sourceDirName);
            }

            DirectoryInfo[] dirs = dir.GetDirectories();
            // If the destination directory doesn't exist, create it.
            if (!Directory.Exists(destDirName))
            {
                Directory.CreateDirectory(destDirName);
            }
            else
            {
                DirectoryInfo targetDir = new DirectoryInfo(destDirName);
                
                foreach (FileInfo fileDel in targetDir.EnumerateFiles())
                {
                    fileDel.Delete();
                }
                foreach (DirectoryInfo dirDel in targetDir.EnumerateDirectories())
                {
                    dirDel.Delete(true);
                }
            }




            // Get the files in the directory and copy them to the new location.
            FileInfo[] files = dir.GetFiles();
            foreach (FileInfo file in files)
            {
                string temppath = Path.Combine(destDirName, file.Name);
                file.CopyTo(temppath, false);
            }

            // If copying subdirectories, copy them and their contents to new location.
            if (copySubDirs)
            {
                foreach (DirectoryInfo subdir in dirs)
                {
                    if (ignoredSubDirs.Contains(subdir.Name))
                    {
                        continue;
                    }

                    string temppath = Path.Combine(destDirName, subdir.Name);
                    Do(subdir.FullName, temppath, copySubDirs, ignoredSubDirs);
                }
            }
        }
    }
}