// Copyright 2012 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 

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 Microsoft.Win32;
using System.Net.Sockets;

using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Carto;
using System.IO;


/// note: need to implement test is connected
/// 
namespace WorkingWithPackages
{


  public partial class FrmMapControl : Form
  {
    private string packageLocation = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArcGIS\Packages";
    private string webMapLocation = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\ArcGIS\Web Maps";
    private string myLayerPackageName = @"Bing Maps Aerial";
    private string myMapPackageName = "Events";
    private string myWebMapName = @"USA Topo Maps";
    private enum PackageType { LayerPackage, MapPackage };
    private FileInfo[] layerFiles;

    public FrmMapControl()
    {
      InitializeComponent();
    }

    private void btnLoadlpk_Click(object sender, EventArgs e)
    {
      try
      {
        ILayerFile layerFile = new LayerFileClass();
        // Test to see if we can connect to ArcGIS.com
        if (IsConnected())
        {
          // If so, open the Layer Package from ArcGIS.com, this will get the most recent data.
          // for the package.  If there is no change, the data will not get re-downloaded, 
          // just use what is stored on disk.
          layerFile.Open(txtLayerPackage.Text.ToString());
        }
        else
        {
          // If we cannot connect to ArcGIS.com use what was previously downloaded.
          if (DoesPackageExist(PackageType.LayerPackage))
          {
            foreach (FileInfo layerpackage in layerFiles)
            {
              // Layer packages can have multiple layers included in them.  However,
              // the LayerFile and MapDocument classes will only get the first one.
              // Here the sample is using an array so we can get all the layer files
              // and not worry about the name.
              layerFile.Open(layerpackage.FullName);
            }
          }
        }
        ILayer layer = layerFile.Layer;
        axMapControl1.AddLayer(layer);
      }
      catch (Exception ex)
      {
        MessageBox.Show("Failed to open Layer Package!", ex.ToString(), MessageBoxButtons.OK, MessageBoxIcon.Error);
      }
    }

    private void btnLoadmpk_Click(object sender, EventArgs e)
    {
      try
      {
        IMapDocument mapDocument = new MapDocumentClass();
        if (IsConnected())
        {
          mapDocument.Open(txtMapPackage.Text, "");
        }
        else
        {
          if (DoesPackageExist(PackageType.MapPackage))
          {
            mapDocument.Open(packageLocation, "");
          }

        }
        axMapControl1.Map = mapDocument.get_Map(0);
      }
      catch (Exception ex)
      {
        MessageBox.Show("Failed to open Map Package!", ex.ToString(), MessageBoxButtons.OK, MessageBoxIcon.Error);
      }
    }


    private void btnWebMap_Click(object sender, EventArgs e)
    {
      if (!(IsConnected()))
      {
        // Since Web Maps require and internet connection anyways
        // just fail if there isn't one.
        MessageBox.Show("Cannot Connect to ArcGIS.com!", "Failed to open Web Map.", MessageBoxButtons.OK, MessageBoxIcon.Error);
        return;
      }
      try
      {
        IMapDocument mapDocument = new MapDocumentClass();
        string webMapMxd = webMapLocation + @"\" + myWebMapName + @"\" + myWebMapName + ".mxd";
        if (File.Exists(webMapMxd))
          mapDocument.Open(webMapMxd, "");
        else
          mapDocument.Open(txtWebMap.Text, "");
        axMapControl1.Map = mapDocument.get_Map(0);
      }
      catch (Exception ex)
      {
        MessageBox.Show("Failed to open Web Map!", ex.ToString(), MessageBoxButtons.OK, MessageBoxIcon.Error);
      }
    }

    private bool DoesPackageExist(PackageType packageType)
    {
      // Packages and Web Maps are handled by the FileHandler in Common Files\ArcGIS\bin
      // The default package location can be controled be the user.
      RegistryKey regKey = Registry.CurrentUser;
      RegistryKey subKey = regKey.OpenSubKey(@"Software\ESRI\ArcGIS File Handler\Settings");
      int option = (int)subKey.GetValue("PackageLocationOption", 0);
      if (1 == option)
      {
        // Change the package location if different otherwise use the default.
        string fileHandlerUserSetting = subKey.GetValue(@"PackageLocation", "").ToString();
        if ("" != fileHandlerUserSetting )
        {
          packageLocation = fileHandlerUserSetting;
        }
      }
      switch (packageType)
      {
        case PackageType.LayerPackage:
          {
            // Layer Packages can have two different directories, depending on if the 
            // package contains a single layer or multiple layers.
            DirectoryInfo directoryInfo; 
            string layerPackageLocation = packageLocation + @"\" + myLayerPackageName.Replace(" ", "_");
            if (Directory.Exists(layerPackageLocation))
            {
              directoryInfo = new DirectoryInfo(layerPackageLocation);
              layerFiles = directoryInfo.GetFiles("*.lyr");
            }
            else
            {
              layerPackageLocation = layerPackageLocation + @".lpk";
              if (Directory.Exists(layerPackageLocation))
              {
                directoryInfo = new DirectoryInfo(layerPackageLocation);
                layerFiles = directoryInfo.GetFiles("*.lyr");
              }
            }

            if (layerFiles.Length > 0)
              {
                packageLocation = layerPackageLocation;
                return true;
              }
            break;
          }
        case PackageType.MapPackage:
          {
            packageLocation = packageLocation + @"\" + myMapPackageName.Replace(" ", "_") + @"\v10\" + myMapPackageName + ".mxd";
            return File.Exists(packageLocation);
          }
        default:
          {
            return false;
          }
      }
      return false;
    }

    private bool IsConnected()
    {
      try
      {
        // Test to see if we can connect to ArcGIS.com
        TcpClient tcpClient = new TcpClient("www.arcgis.com", 80);
        tcpClient.Close();
        return true;
      }
      catch (System.Exception ex)
      {
        return false;
      }

    }

  }
}