using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Ionic.Zip;
using System.IO;

namespace SCJMapper_V2
{

  /// <summary>
  /// Finds and returns the DefaultProfile from SC GameData.pak
  /// it is located in GameData.pak \Libs\Config
  /// </summary>
  class SCDefaultProfile
  {

    /// <summary>
    /// Returns a list of files found that match 'defaultProfile*.xml'
    /// </summary>
    /// <returns>A list of filenames - can be empty</returns>
    static public List<String> DefaultProfileNames
    {
      get
      {
        List<String> retVal = new List<String>( );
        if ( File.Exists( SCPath.SCGameData_pak ) ) {
          using ( ZipFile zip = ZipFile.Read( SCPath.SCGameData_pak ) ) {
            zip.CaseSensitiveRetrieval = false;
            ICollection<ZipEntry> gdpak = zip.SelectEntries( "name = " + "'" + SCPath.DefaultProfileName + "*.xml'", SCPath.DefaultProfilePath_rel );
            if ( gdpak != null ) {
              foreach ( ZipEntry ze in gdpak ) {
                retVal.Add( ze.FileName );
              }
            }
          }
        }
        return retVal;
      }
    }

    /// <summary>
    /// Returns the sought default profile as string from GameData.pak
    /// </summary>
    /// <param name="defaultProfileName">The filename of the profile to be extracted</param>
    /// <returns>A string containing the file contents</returns>
    static public String DefaultProfile( String defaultProfileName )
    {
      String retVal = "";

      // first try to get the SC defaultProfile from the GameData.pak
      retVal = ExtractDefaultProfile( defaultProfileName );
      if ( String.IsNullOrEmpty( retVal ) ) {
        // second choice a defaultProfile.xml in the app dir distributed with the application ??? to be deleted ???
        if ( File.Exists( SCPath.DefaultProfileName + ".xml" ) ) {
          using ( StreamReader sr = new StreamReader( SCPath.DefaultProfileName + ".xml" ) ) {
            retVal = sr.ReadToEnd( );
          }
        }
        // last resort is the built in one
        else {
          retVal = SCJMapper_V2.Properties.Resources.defaultProfile;
        }
      }
      return retVal;
    }

    /// <summary>
    /// Zip Extracts the file to a string
    /// </summary>
    static private String ExtractDefaultProfile( String defaultProfileName )
    {
      String retVal = "";
      if ( File.Exists( SCPath.SCGameData_pak ) ) {
        using ( ZipFile zip = ZipFile.Read( SCPath.SCGameData_pak ) ) {
          zip.CaseSensitiveRetrieval = false;

          ICollection<ZipEntry> gdpak = zip.SelectEntries( "name = " + "'" + defaultProfileName+"'", SCPath.DefaultProfilePath_rel );
          if ( gdpak != null ) {
            try {
              MemoryStream mst = new MemoryStream( );
              gdpak.FirstOrDefault( ).Extract( mst );
              UTF8Encoding unc = new UTF8Encoding( );
              retVal = unc.GetString( mst.ToArray( ) );
            }
            catch {
              retVal = ""; // clear any remanents
            }
          }
        }
      }
      return retVal;
    }


  }
}