/*
 *	Karinto Library Project
 *
 *	This software is distributed under a zlib-style license.
 *	See license.txt for more information.
 */

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

namespace Karinto
{
    /// <summary>
    ///     フルパスを動的に解決するパス
    /// </summary>
    public class FilePath
    {
        private string path;
        private string suffix;
        private static string WorkDirectory;

        public static void SetDirectory(string path)
        {
            WorkDirectory = (path == null) ? "" : path;
        }

        public FilePath(string path) : this(path, "") { }

        public FilePath(string path, string suffix)
        {
            this.path = (path == null) ? "" : path;
            this.suffix = (suffix == null) ? "" : suffix;
        }

        public static implicit operator string(FilePath fp)
        {
            if (fp == null) return "";
            return fp.ToString();
        }

        public static implicit operator FilePath(string s)
        {
            return new FilePath(s);
        }

        public void SetSuffix(string suffix)
        {
            this.suffix = (suffix == null) ? "" : suffix;
        }

        public override string ToString()
        {
            string ext = Regex.Match(path, "\\.[^\\.]+$").Groups[0].Value;
            string fullpath = Regex.Replace(path, ext + "$", suffix + ext);
            if (File.Exists(WorkDirectory + "\\" + fullpath))
            {
                fullpath = WorkDirectory + "\\" + fullpath;
            }
            return fullpath;
        }

        public bool Exists {
            get {
                return File.Exists( ToString() );
            }
        }
    }
}