/*
  Copyright (C) 2004-2005 SKYRIX Software AG

  This file is part of OpenGroupware.org.

  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.
*/

#include "NSObject+Blogger.h"
#include "common.h"
#include <NGObjWeb/SoObjects.h>

static NSNumber *noNum = nil;

@implementation NSObject(Blogger)

- (NSArray *)bloggerFetchAllBlogInfosInContext:(id)_ctx {
  NSMutableArray *infos;
  NSArray  *keys;
  unsigned i, count;
  
  if ((keys = [self toManyRelationshipKeys]) == nil) {
    [self logWithFormat:@"no container keys."];
    return nil;
  }
  
  if ((count = [keys count]) == 0) {
    [self logWithFormat:@"empty set of container keys."];
    return [NSArray array];
  }
  
  infos = [NSMutableArray arrayWithCapacity:count];
  for (i = 0; i < count; i++) {
    NSDictionary *info;
    NSString     *name;
    id           blog;
    
    name = [keys objectAtIndex:i];
    blog = [self lookupName:name inContext:_ctx acquire:NO];
    if (![blog isNotNull])
      continue;
    
    info = [blog bloggerBlogInfoInContext:_ctx];
    if (![info isNotNull])
      continue;

    [infos addObject:info];
  }
  
  return infos;
}

- (id)lookupBlogWithID:(NSString *)_blogID inContext:(id)_ctx {
  [self logWithFormat:@"lookup BLOG: %@", _blogID];
  return [self lookupName:_blogID inContext:_ctx acquire:NO];
}

@end /* NSObject(Blogger) */

@implementation NSObject(BlogObject)

- (NSDictionary *)bloggerBlogInfoInContext:(id)_ctx {
  /* keys: url, blogid, blogName */
  NSString *url, *bid, *bname;
  
  bname = [self davDisplayName];
  url   = [self baseURLInContext:_ctx];
  bid   = [self nameInContainer];
  
  return [NSDictionary dictionaryWithObjectsAndKeys:
			 url,   @"url",
		         bid,   @"blogid",
		         bname, @"blogName",
		       nil];
}

- (NSArray *)bloggerPostIDsInContext:(id)_ctx {
  return [self toOneRelationshipKeys];
}

- (NSString *)bloggerPostEntryWithTitle:(NSString *)_title
  description:(NSString *)_content creationDate:(NSCalendarDate *)_date
  inContext:(id)_ctx
{
  [self logWithFormat:@"Note: this object does not support blog posts!"];
  return (id)[NSException exceptionWithName:@"NotImplemented"
			  reason:@"Edit not yet implemented!"
			  userInfo:nil];
}

- (id)lookupPostWithID:(NSString *)_postID inContext:(id)_ctx {
  NSRange  r;
  NSString *blogID, *postID;
  id       blog;
  
  if ([_postID length] == 0)
    return nil;
  
  r = [_postID rangeOfString:@"/"];
  if (r.length == 0)
    return [self lookupName:_postID inContext:_ctx acquire:NO];

  blogID = [_postID substringToIndex:r.location];
  postID = [_postID substringFromIndex:(r.location + r.length)];
  
  if ((blog = [self lookupBlogWithID:blogID inContext:_ctx]) == nil) {
    [self logWithFormat:@"ERROR: did not find blog for post: %@", _postID];
    return nil;
  }
  
  return [blog lookupBlogWithID:postID inContext:_ctx];
}

@end /* NSObject(BlogObject) */

@implementation NSObject(PostObject)

- (NSString *)bloggerPostIDInContext:(id)_ctx {
  /* default post ID is container name + entry name */
  NSString *tmp;
  
  tmp = [[self container] nameInContainer];
  tmp = [tmp stringByAppendingString:@"/"];
  return [tmp stringByAppendingString:[self nameInContainer]];
}

- (NSString *)bloggerContentInContext:(id)_ctx {
  NSString *str;
  
  if ((str = [self valueForKey:@"contentAsString"]) == nil)
    return nil;
  
  if ([str hasPrefix:OGo_HTML_MARKER])
    return [str substringFromIndex:[OGo_HTML_MARKER length]];

  str = [NSString stringWithFormat:@"<p>%@</p>", 
		    [str stringByEscapingHTMLString]];
  return str;
}

- (NSDictionary *)bloggerPostInfoInContext:(id)_ctx {
  /*
    Returns a structs containing 
      dateCreated
      userid
      postid
      description / content
      title
      link
      permaLink
      mt_excerpt
      mt_text_more
      mt_allow_comments
      mt_allow_pings
      mt_convert_breaks
      mt_keywords
  */
  NSMutableDictionary *entry;
  NSString *str;
  id tmp;

  if (noNum == nil) noNum = [[NSNumber numberWithBool:NO] retain];
  
  entry = [NSMutableDictionary dictionaryWithCapacity:24];
  
  [entry setObject:[self bloggerPostIDInContext:_ctx] forKey:@"postid"];
  if ((tmp = [self baseURLInContext:_ctx])) {
    [entry setObject:tmp forKey:@"link"];
    [entry setObject:tmp forKey:@"permaLink"];
  }
  
  /* description is the first text */
  if ((str = [self bloggerContentInContext:_ctx]) != nil) {
    [entry setObject:str forKey:@"description"];
   
    /*
      BloggerAPI uses key 'content', which contains:
        content is <title>$title</title> + $description ?
    */
    tmp = [self davDisplayName];
    if ([tmp isNotNull] && [tmp length] > 0) {
      tmp = [@"<title>" stringByAppendingString:tmp];
      tmp = [tmp stringByAppendingString:@"</title>\n"];
      str = [tmp stringByAppendingString:str];
    }
    [entry setObject:str forKey:@"content"];
  }
  
  /* there can be a second text in 'mt_text_more' */
  
  if ((tmp = [self davLastModified]))
    [entry setObject:tmp forKey:@"dateCreated"];
  
  if ([(tmp = [self valueForKey:@"NSFileSubject"]) isNotNull])
    [entry setObject:tmp forKey:@"title"];
  else if ((tmp = [self davDisplayName]))
    [entry setObject:tmp forKey:@"title"];
  
  [entry setObject:noNum forKey:@"mt_allow_comments"];
  [entry setObject:noNum forKey:@"mt_allow_pings"];
#if 0 /* This is a _string_ argument (the key of mt.supportedTextFilters) */
  [entry setObject:myFilter forKey:@"mt_convert_breaks"];
#endif
  
  return entry;
}

@end /* NSObject(PostObject) */