ConfigurationHelper.cs :  » RSS-RDF » RSS-Feeder » RSSFeeder » Helpers » C# / CSharp Open Source

// Copyright  2005 by Omar Al Zabir. All rights are reserved.
// 
// If you like this code then feel free to go ahead and use it.
// The only thing I ask is that you don't remove or alter my copyright notice.
//
// Your use of this software is entirely at your own risk. I make no claims or
// warrantees about the reliability or fitness of this code for any particular purpose.
// If you make changes or additions to this code please mark your code as being yours.
// 
// website http://www.oazabir.com, email OmarAlZabir@gmail.com, msn oazabir@hotmail.com

using System;
using System.Diagnostics;
using System.IO;
using System.Collections;
using System.Xml;
using System.Xml.Serialization;
using Microsoft.Practices.EnterpriseLibrary.Logging;

namespace RSSFeeder.Helpers{
  using RSSCommon;
  using RSSCommon.Helper;
  using RSSBlogAPI;

  /// <summary>
  /// Helper class for storing/retrieving global configuration
  /// </summary>
  public class ConfigurationHelper
  {
    public const string CONFIGURATION_BACKUP_FILE = "ConfigurationBackup.xml";

    public static void CopyFiles()
    {
      #region Log
      Logger.Write("Copying files...");
      #endregion

      string exeFileName = Process.GetCurrentProcess().MainModule.FileName;
      DateTime exeDateTime = File.GetLastWriteTime( exeFileName );

      // 1. Create the default XSLT file
      Configuration.Instance.XSLFileName = Path.Combine( ApplicationSettings.ApplicationDataPath, "default.xslt" );
      if( !File.Exists( Configuration.Instance.XSLFileName ) || File.GetLastWriteTime( Configuration.Instance.XSLFileName ) < exeDateTime )
        SerializationHelper.WriteEmbeddedFile( "default.xslt", Configuration.Instance.XSLFileName );

      // 2. Copy the java script file
      //string jsFilePath = Path.Combine( ApplicationSettings.ApplicationDataPath, "fix.js" );
      //SerializationHelper.WriteEmbeddedFile( "RSSFeeder.Resources.fix.js", jsFilePath );

      // 3. Copy newspaper XSL 
      Configuration.Instance.NewspaperXSL = Path.Combine( ApplicationSettings.ApplicationDataPath, "rss2html.xslt" );
      if( !File.Exists( Configuration.Instance.NewspaperXSL ) || File.GetLastWriteTime( Configuration.Instance.NewspaperXSL ) < exeDateTime )
        SerializationHelper.WriteEmbeddedFile( "rss2html.xslt", Configuration.Instance.NewspaperXSL );

      // 4. Copy outlook view XML
      Configuration.Instance.OutlookViewXmlPath = Path.Combine( ApplicationSettings.ApplicationDataPath, "RSSFeederView.xml" );
      if( !File.Exists( Configuration.Instance.OutlookViewXmlPath ) || File.GetLastWriteTime( Configuration.Instance.OutlookViewXmlPath ) < exeDateTime )
        SerializationHelper.WriteEmbeddedFile( "RSSFeederView.xml", Configuration.Instance.OutlookViewXmlPath );

      // 5. Copy outlook XSL
      Configuration.Instance.OutlookXSL = Path.Combine( ApplicationSettings.ApplicationDataPath, "outlook.xslt" );
      if( !File.Exists( Configuration.Instance.OutlookXSL ) || File.GetLastWriteTime( Configuration.Instance.OutlookXSL ) < exeDateTime )
        SerializationHelper.WriteEmbeddedFile( "outlook.xslt", Configuration.Instance.OutlookXSL );

      // 6. Atom to RSS Converter XSL
      Configuration.Instance.AtomToRssXsl= Path.Combine( ApplicationSettings.ApplicationDataPath, "atomtorss2.xslt" );
      if( !File.Exists( Configuration.Instance.AtomToRssXsl ) || File.GetLastWriteTime( Configuration.Instance.AtomToRssXsl ) < exeDateTime )
        SerializationHelper.WriteEmbeddedFile( "atomtorss2.xslt", Configuration.Instance.AtomToRssXsl );
    }

    public static void LoadGlobalSettings()
    {
      EntLibHelper.LoadConfiguration();
      
      // Try loading the web log configuration. For first time, it may fail, never mind
      try
      {
        WebLogProvider.LoadWebLogs();
      }
      catch
      {
      }
    
      // If this is the new installation, try restoring the old configuration
      if( Configuration.Instance.IsNewInstall )
      {
        string configPath = Path.Combine( ApplicationSettings.ApplicationDataPath, CONFIGURATION_BACKUP_FILE );
        if( File.Exists( configPath ) )
        {
          using( FileStream file = new FileStream( configPath, FileMode.Open ) )
          {
            Configuration oldConfig = (Configuration)SerializationHelper.Deserialize( file, typeof( Configuration ) );

            // Copy old config settings to new config
            SerializationHelper.CopyProperties( oldConfig, Configuration.Instance );
          }
        }

        Configuration.Instance.IsNewInstall = false;

        SaveGlobalSettings();
      }

      RSSCommon.PropertyEditor.PasswordEditor.PasswordProvider = new EntLibHelper();
      // Subscribe to change event so that whenever the configuration object changes, it is saved
      Configuration.Instance.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(Instance_PropertyChanged);      
    }
    public static void SaveGlobalSettings()
    {
      EntLibHelper.Debug("Saving configuration", "");      
      EntLibHelper.SaveConfiguration();

      // 6. Copy the configuration file to application data in order to maintain a backup of it.
      // Next time when a new version comes, we need to get settings from this backup
      string configPath = Path.Combine( ApplicationSettings.ApplicationDataPath, CONFIGURATION_BACKUP_FILE );
      using( FileStream file = new FileStream( configPath, FileMode.Create ) )
      {
        SerializationHelper.Serialize( file, Configuration.Instance );
      }
      
      WebLogProvider.SaveWebLogs();
    }

    private static void Instance_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
    {
      if( Configuration.Instance.LoadAtStartup )
        RegistryHelper.RegisterAtStartup();
      else
        RegistryHelper.UnregisterAtStartup();

      SaveGlobalSettings();
    }
  }
}