// (C) 2005 Max Howell (max.howell@methylblue.com)
// See COPYING file for licensing information


//TODO error messages that vary depending on if the file is remote or not


#include "codeine.h"
#include "debug.h"
#include <kio/netaccess.h>
#include "playlistFile.h"
#include <ntqfile.h>
#include <ntqtextstream.h>
#include <mxcl.library.h>


PlaylistFile::PlaylistFile( const KURL &url )
      : m_url( url )
      , m_isRemoteFile( !url.isLocalFile() )
      , m_isValid( false )
{
   mxcl::WaitCursor allocateOnStack;

   TQString &path = m_path = url.path();

   if( path.endsWith( ".pls", false ) )
      m_type = PLS; else
   if( path.endsWith( ".m3u", false ) )
      m_type = M3U;
   else {
      m_type = Unknown;
      m_error = i18n( "The file is not a playlist" );
      return;
   }

   if( m_isRemoteFile ) {
      path = TQString();
      if( !KIO::NetAccess::download( url, path, Codeine::mainWindow() ) ) {
         m_error = i18n( "Codeine could not download the remote playlist: %1" ).arg( url.prettyURL() );
         return;
      }
   }

   TQFile file( path );
   if( file.open( IO_ReadOnly ) ) {
      TQTextStream stream( &file );
      switch( m_type ) {
         case M3U: parseM3uFile( stream ); break;
         case PLS: parsePlsFile( stream ); break;
         default: ;
      }

      if( m_contents.isEmpty() )
         m_error = i18n( "<qt>The playlist, <i>'%1'</i>, could not be interpreted. Perhaps it is empty?" ).arg( path ),
         m_isValid = false;
   }
   else
      m_error = i18n( "Codeine could not open the file: %1" ).arg( path );
}


PlaylistFile::~PlaylistFile()
{
   if( m_isRemoteFile )
      KIO::NetAccess::removeTempFile( m_path );
}


void
PlaylistFile::parsePlsFile( TQTextStream &stream )
{
   DEBUG_BLOCK

   for( TQString line = stream.readLine(); !line.isNull(); )
   {
      if( line.startsWith( "File" ) ) {
         const KURL url = line.section( '=', -1 );
         const TQString title = stream.readLine().section( '=', -1 );

         debug() << url << endl << title << endl;

         m_contents += url;
         m_isValid = true;

         return; //TODO continue for all urls
      }
      line = stream.readLine();
   }
}


void
PlaylistFile::parseM3uFile( TQTextStream &stream )
{
   DEBUG_BLOCK

   for( TQString line; !stream.atEnd(); )
   {
      line = stream.readLine();

      if( line.startsWith( "#EXTINF", false ) )
         continue;

      else if( !line.startsWith( "#" ) && !line.isEmpty() )
      {
         KURL url;

         // KURL::isRelativeURL() expects absolute URLs to start with a protocol, so prepend it if missing
         if( line.startsWith( "/" ) )
            line.prepend( "file://" );

         if( KURL::isRelativeURL( line ) )
            url.setPath( m_url.directory() + line );
         else
            url = KURL::fromPathOrURL( line );

         m_contents += url;
         m_isValid = true;

         return;
      }
   }
}