/*
  Copyright (C) 2000-2003 SKYRIX Software AG

  This file is part of OGo

  OGo is free software; you can redistribute it and/or modify it under
  the terms of the GNU Lesser General Public License as published by the
  Free Software Foundation; either version 2, or (at your option) any
  later version.

  OGo is distributed in the hope that it will be useful, but WITHOUT ANY
  WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with OGo; see the file COPYING.  If not, write to the
  Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  02111-1307, USA.
*/
// $Id$

#include "SkyProject.h"
#include <NGExtensions/EOCacheDataSource.h>
#include "common.h"

/*
  supported JS properties:

    BOOL   isReadable   (readonly)
    BOOL   isWriteable  (readonly)
    BOOL   isRemovable  (readonly)

  supported JS functions:
    
    Object     getAttribute(key [,ns])
    
    FileManager getFileManager()
    DataSource  getDocumentDataSource([bool docache=yes])
*/

@implementation SkyProject(JSSupport)

static NSNumber *yesNum = nil;
static NSNumber *noNum  = nil;

static void _ensureBools(void) {
  if (yesNum == nil) yesNum = [[NSNumber numberWithBool:YES] retain];
  if (noNum  == nil) noNum  = [[NSNumber numberWithBool:NO]  retain];
}

- (id)_jsprop_isReadable {
  _ensureBools();
  return yesNum;
}
- (id)_jsprop_isWriteable {
  _ensureBools();
  return yesNum;
}
- (id)_jsprop_isRemovable {
  _ensureBools();
  return yesNum;
}

- (id)_jsprop_isEdited {
  _ensureBools();
  return noNum;
}

/* attribute methods */

- (id)_jsfunc_getAttribute:(NSArray *)_args {
  NSString *key;
  NSString *ns;
  unsigned count;
  
  if ((count = [_args count]) == 0)
    return nil;
  if (count == 1)
    return [self valueForKey:[_args objectAtIndex:0]];
    
  key = [_args objectAtIndex:0];
  ns  = [_args objectAtIndex:1];
    
  key = [ns length] > 0
    ? [NSString stringWithFormat:@"{%@}%@", ns, key]
    : key;
    
  return [self valueForKey:key];
}

- (id)_jsfunc_hasAttribute:(NSArray *)_args {
  _ensureBools();
  return ([self _jsfunc_getAttribute:_args] != nil)
    ? yesNum : noNum;
}

- (id)_jsfunc_setAttribute:(NSArray *)_args {
  unsigned count;
  NSString *key;
  id   value;
  BOOL result;
  _ensureBools();
  
  if ((count = [_args count]) < 2) {
    return noNum;
  }
  else if (count == 2) {
    key   = [_args objectAtIndex:0];
    value = [_args objectAtIndex:1];
  }
  else {
    NSString *ns;
    
    key   = [_args objectAtIndex:0];
    ns    = [_args objectAtIndex:1];
    value = [_args objectAtIndex:2];
    
    key = [ns length] > 0
      ? [NSString stringWithFormat:@"{%@}%@", ns, key]
      : key;
  }

  result = YES;
  NS_DURING
    [self takeValue:value forKey:key];
  NS_HANDLER
    result = NO;
  NS_ENDHANDLER;
  
  return result ? yesNum : noNum;
}

- (id)_jsfunc_removeAttribute:(NSArray *)_args {
  unsigned count;
  NSString *key;
  BOOL result;
  _ensureBools();
  
  if ((count = [_args count]) == 0)
    return noNum;
  else if (count == 1)
    key = [_args objectAtIndex:0];
  else {
    NSString *ns;
    
    key = [_args objectAtIndex:0];
    ns  = [_args objectAtIndex:1];
    
    key = [ns length] > 0
      ? [NSString stringWithFormat:@"{%@}%@", ns, key]
      : key;
  }

  result = YES;
  NS_DURING
    [self takeValue:nil forKey:key];
  NS_HANDLER
    result = NO;
  NS_ENDHANDLER;
  
  return result ? yesNum : noNum;
}

/* methods */

- (id)_jsfunc_getFileManager:(NSArray *)_args {
  return [self fileManager];
}

- (id)_jsfunc_getDocumentDataSource:(NSArray *)_args {
  BOOL     doCache;
  unsigned count;
  id       ds;

  doCache = YES;
  if ((count = [_args count]) > 0)
    doCache = [[_args objectAtIndex:0] boolValue];
  
  if ((ds = [self documentDataSource]) == nil) {
    NSLog(@"WARNING[%s]: couldn't create document datasource for project: %@",
          __PRETTY_FUNCTION__, self);
    return nil;
  }

  if (doCache) {
    /* wrap in cache datasource */
    ds = [[[EOCacheDataSource alloc] initWithDataSource:ds] autorelease];
  }

#if DEBUG
  NSAssert1([ds isKindOfClass:[EODataSource class]] || ds == nil,
            @"result is not an EODataSource: %@ ..", ds);
#endif
  
  return ds;
}

@end /* SkyProject(JSSupport) */