using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

using Pathfinder;

namespace Thaumcraft_Pathfinder
{
  public partial class frmMain : Form
  {
    private string       ScriptsDir = Application.StartupPath + "\\Scripts\\";
    private string       AppData    = Application.StartupPath + "\\Pathfinder.dat";
    private List<string> Versions   = new List<string>();
    private AppStateData AppState   = new AppStateData();

    private Dictionary<string, List<Aspect>> Aspects = new Dictionary<string, List<Aspect>>();

    public frmMain()
    {
      InitializeComponent();

      numMaxLen.MouseWheel += new MouseEventHandler( this.MouseWheelScrollHandler );
      numMinLen.MouseWheel += new MouseEventHandler( this.MouseWheelScrollHandler );
    }

    private void FindScripts()
    {
      if ( Directory.Exists( ScriptsDir ) == false )
      {
        MessageBox.Show( "No scripts detected!  The program can't function without them!  Please, ensure that the Scripts folder is inside the main program folder, and contains *.pfa files in its subdirectories." );
        throw new DirectoryNotFoundException( ScriptsDir );
      }
      else
      {
        DirectoryInfo ScrDirInfo = new DirectoryInfo( ScriptsDir );

        foreach ( DirectoryInfo SubDir in ScrDirInfo.GetDirectories() )
        {
          if ( SubDir.Name[SubDir.Name.Length - 1] == '\\' )
          {
            Versions.Add( Path.GetFileName( SubDir.Name.Remove( SubDir.Name.Length - 1 ) ) );
          }
          else
          {
            Versions.Add( Path.GetFileName( SubDir.Name ) );
          }
        }
      }

      foreach ( string Ver in Versions )
      {
        cboVersion.Items.Add( Ver );
      }

      cboVersion.SelectedIndex = 0;

      LoadScripts();
    }

    private void LoadScripts()
    {
      foreach ( string Version in Versions )
      {
        List<Aspect> AspectList = new List<Aspect>();

        foreach ( string Script in Directory.GetFiles( ScriptsDir + Version + "\\" ) )
        {
          FileStream      stream    = File.Open( Script, FileMode.Open );
          BinaryFormatter formatter = new BinaryFormatter();
          Aspect          aspect    = ( Aspect ) formatter.Deserialize( stream );

          AspectList.Add( aspect );
        }

        Aspects.Add( Version, AspectList );
      }
    }

    private void LoadStateData()
    {
      if ( File.Exists( AppData ) == true )
      {
        FileStream      stream    = File.Open( AppData, FileMode.Open );
        BinaryFormatter formatter = new BinaryFormatter();

        this.AppState = ( AppStateData ) formatter.Deserialize( stream );
        stream.Close();
      }
      else
      {
        SaveStateData();
      }
    }

    private void SaveStateData()
    {
      FileStream      stream    = File.Open( AppData, FileMode.OpenOrCreate );
      BinaryFormatter formatter = new BinaryFormatter();

      formatter.Serialize( stream, this.AppState );
      stream.Close();
    }

    private void frmMain_Load( object sender, EventArgs e )
    {
      FindScripts();
      LoadStateData();
    }

    private void aboutToolStripMenuItem_Click( object sender, EventArgs e )
    {
      new frmAbout().Show();
    }

    private void MouseWheelScrollHandler( object sender, MouseEventArgs e )
    {
      NumericUpDown         Ctrl        = ( NumericUpDown ) sender;
      HandledMouseEventArgs HandledArgs = e as HandledMouseEventArgs;
      HandledArgs.Handled               = true;

      decimal Value = Ctrl.Value + ( ( e.Delta > 0 ) ? Ctrl.Increment : -Ctrl.Increment );
      Ctrl.Value = Math.Max( Ctrl.Minimum, Math.Min( Value, Ctrl.Maximum ) );
    }

    private void cboVersion_SelectedIndexChanged( object sender, EventArgs e )
    {

    }
  }
}