#import <Foundation/Foundation.h>
#import <GNUstepBase/GNUstep.h>
#import <GNUstepBase/GSXML.h>

#import "TickerWindow.h"

@interface RSSNode: NSObject
{
    RSSNode *parent;
    NSMutableArray *children;
    
    NSMutableDictionary *attributes;

    NSString *name, *value;

    unsigned long offset;
}

+ nodeWithParent:(RSSNode *)theParent;

- initWithParent:(RSSNode *)theParent;

- setOffset:(unsigned long)pos;
- (unsigned long)offset;

- setName:(NSString *)theName;
- setValue:(NSString *)theValue;
- setAttributes:(NSMutableDictionary *)attribs;

- (NSString *)name;
- (NSString *)value;
- attributeNamed:(NSString *)aName;

- addChild:(RSSNode *)child;
- (NSArray *)children;
- (RSSNode *)parent;

- (RSSNode *)childNamed:(NSString *)theName;
- (RSSNode *)childNamed:(NSString *)theName 
	  withAttribute:(NSString *)theAttr
		atValue:(NSString *)theValue;

- (NSString *)description;

- (void)dealloc;

@end

@interface RSSHandler: GSSAXHandler
{
    RSSNode *current;
    NSMutableArray *messages;
}

+ (RSSHandler *)rssHandler;

- init;

- (void)startElement:(NSString *)elementName 
	  attributes:(NSMutableDictionary *)elementAttributes;
- (void)characters:(NSString *)name;
- (void)cdataBlock: (NSData*)value;
- (void)endElement:(NSString *)elementName;

- (void)error:(NSString*)e colNumber:(int)colNumber lineNumber:(int)lineNumber;
- (void)fatalError:(NSString*)e colNumber:(int)colNumber lineNumber:(int)lineNumber;

- (RSSNode *)root;
- (NSMutableArray *)messages;

- (void)dealloc;

@end

#define ART_FIELD_TITLE      @"title"
#define ART_FIELD_SUMMARY    @"summary"
#define ART_FIELD_DESC       @"description"
#define ART_FIELD_CONTENT    @"content"
#define ART_FIELD_GUID       @"guid"
#define ART_FIELD_ID         @"id"
#define ART_FIELD_LINK       @"link"
#define ART_FIELD_CDATA      @"cdata"

#define ART_FIELD_DATE       @"pubDate"
#define ART_FIELD_DATE1      @"date"

#define CHAN_FIELD_ATHRMANAG   @"managingEditor"
#define CHAN_FIELD_ATHRWEBMSTR @"webMaster"
#define ART_FIELD_ATHRAUTHOR   @"author"
#define ART_FIELD_ATHRCREATOR  @"creator"

#define ART_FIELD_AUPDATED    @"updated"
#define ART_FIELD_AMODIFIED   @"modified"
#define ART_FIELD_ACREATED    @"created"
#define ART_FIELD_AISSUED     @"issued"
#define ART_FIELD_APUBLISHED  @"published"

typedef enum {
    ART_HAS_TITLE = 1,
    ART_HAS_DESC = 2,
    ART_HAS_GUID = 4,
    ART_HAS_LINK = 8,
    ART_HAS_DATE = 16,
    ART_HAS_AUTHOR = 32
} ART_FLAGS;

#define TEXTLEN_FOR_UNIQUEID 128
#define TEXTLEN_FOR_TITLE    256

#define RSS_CALFORMAT1   @"%a, %e %b %Y %H:%M:%S %z" // Tue, 28 Feb 2006 12:46:51 +0100
#define RSS_CALFORMAT2   @"%a, %e %b %Y %H:%M:%S %Z" // Tue, 28 Feb 2006 12:46:51 GMT
#define ATOM_CALFORMAT1 @"%Y-%m-%d %H:%M:%S%z" // 2006-03-08 13:58:00-0800
#define ATOM_CALFORMAT2 @"%Y-%m-%d %H:%M:%S.%F%z" // 2006-03-08 13:58:00.123-0800

#define ART_NODATE_SECS        5

@interface GenericArticle: NSObject
{
    NSString *title, *desc, *text, *author;
    NSString *guid, *uniqueid, *link;

    NSDate *date;

    unsigned int flags;

    TickerWindow *window;
}

+ (NSDictionary *)englishLocale;

+ (NSString *)authorFromAtomAuthor:(RSSNode *)subnode;
+ (NSDate *)dateFromAtomDate:(RSSNode *)subnode;


+ newWithNode:(RSSNode *)node inWindow:(TickerWindow *)win;

- initWithNode:(RSSNode *)node inWindow:(TickerWindow *)win;
- concludeInit;

- buildTitle;
- buildText;
- buildUniqueid;

- (NSString *)title;
- (NSString *)desc;
- (NSString *)text;
- (NSString *)author;

- (NSString *)uniqueid;
- (NSString *)link;

- (NSAttributedString *)contentWithTitleFont:(NSFont *)aFont
				  foreground:(NSColor *)fg
				  background:(NSColor *)bg;

- setAuthor:(NSString *)anAuthor;

- setDate:(NSDate *)aDate;
- (NSDate *)date;

- (NSComparisonResult)compareByDate:(GenericArticle *)anArticle;

- (void)dealloc;

@end

@interface RSSArticle: GenericArticle

- initWithNode:(RSSNode *)node inWindow:(TickerWindow *)win;

@end

@interface AtomArticle: GenericArticle

- initWithNode:(RSSNode *)node inWindow:(TickerWindow *)win;

@end