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

namespace FileSecurity_Server
{
    class FileSystem
    {
        public List<String> Files;
        public Dictionary<String, String> Hashes;

        private String SecurityFile = String.Format("{0}{1}", Program.LocalPath, Properties.Settings.Default.Security_File);
        private String SecurityFolder = String.Format("{0}{1}\\", Program.LocalPath, Properties.Settings.Default.Security_Folder);

        public FileSystem()
        {
            Files = new List<String>();
            Hashes = new Dictionary<String, String>();

            if (!File.Exists(SecurityFile)) { using (StreamWriter Writer = new StreamWriter(SecurityFile)) { Writer.WriteLine(); } }
            if (!Directory.Exists(SecurityFolder)) { Directory.CreateDirectory(SecurityFolder); }

            LoadFiles();
            LoadHashes();
        }

        private void LoadFiles()
        {
            using (StreamReader Reader = new StreamReader(SecurityFile))
            {
                String CurrentLine;

                while ((CurrentLine = Reader.ReadLine()) != null)
                {
                    if (!File.Exists(String.Format("{0}{1}", SecurityFolder, CurrentLine))) { Program.Writer.WriteLine(WriteType.Error, false, "File Check Missing: {0}", CurrentLine); }
                    if (Files.Contains(CurrentLine)) { Program.Writer.WriteLine(WriteType.Error, false, "Duplicated File Check: {0}", CurrentLine); }
                    else
                    {
                        Program.Writer.WriteLine(WriteType.Information, false, "File Check Added: {0}", CurrentLine);

                        Files.Add(CurrentLine);
                    }
                }

                if (Files.Count == 0)
                {
                    Program.Writer.WriteLine(WriteType.Error, false, "There Cannot Be 0 File Checks!");

                    //Program.ShutdownTimer(5000);
                }

                Program.Writer.WriteLine(WriteType.Information, true, "{0} Checks Added!", Files.Count);
            }
        }

        private void LoadHashes()
        {
            foreach (var File in Files)
            {
                String MD5Hash = Program.MD5Hash(String.Format("{0}{1}", SecurityFolder, File));

                Hashes.Add(File, MD5Hash);
            }
        }
    }
}