#region License Information (GPL v3)

/*
    ShareX - A program that allows you to take screenshots and share any file type
    Copyright (C) 2007-2014 ShareX Developers

    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 2
    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, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

    Optionally you can also view the license at <http://www.gnu.org/licenses/>.
*/

#endregion License Information (GPL v3)

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

namespace HelpersLib
{
    public static class URLHelpers
    {
        public static string AddSlash(string url, SlashType slashType)
        {
            return AddSlash(url, slashType, 1);
        }

        public static string AddSlash(string url, SlashType slashType, int count)
        {
            if (slashType == SlashType.Prefix)
            {
                if (url.StartsWith("/"))
                {
                    url = url.Remove(0, 1);
                }

                for (int i = 0; i < count; i++)
                {
                    url = "/" + url;
                }
            }
            else
            {
                if (url.EndsWith("/"))
                {
                    url = url.Substring(0, url.Length - 1);
                }

                for (int i = 0; i < count; i++)
                {
                    url += "/";
                }
            }

            return url;
        }

        public static string GetFileName(string path, bool checkExtension = false)
        {
            if (path.Contains("/"))
            {
                path = path.Remove(0, path.LastIndexOf('/') + 1);
            }

            if (checkExtension && !Path.HasExtension(path))
            {
                return null;
            }

            return path;
        }

        public static string GetDirectoryPath(string path)
        {
            if (path.Contains("/"))
            {
                path = path.Substring(0, path.LastIndexOf('/'));
            }

            return path;
        }

        public static List<string> GetPaths(string path)
        {
            List<string> result = new List<string>();
            string temp = string.Empty;
            string[] dirs = path.Split('/');
            foreach (string dir in dirs)
            {
                if (!string.IsNullOrEmpty(dir))
                {
                    temp += "/" + dir;
                    result.Add(temp);
                }
            }

            return result;
        }

        private static readonly string[] URLPrefixes = new string[] { "http://", "https://", "ftp://", "ftps://", "file://" };

        public static bool HasPrefix(string url)
        {
            return URLPrefixes.Any(x => url.StartsWith(x, StringComparison.InvariantCultureIgnoreCase));
        }

        public static string RemovePrefixes(string url)
        {
            foreach (string prefix in URLPrefixes)
            {
                if (url.StartsWith(prefix, StringComparison.InvariantCultureIgnoreCase))
                {
                    url = url.Remove(0, prefix.Length);
                    break;
                }
            }

            return url;
        }
    }
}