/*
  Copyright (C) 2000-2005 SKYRIX Software AG
  Copyright (C) 2006-2008 Inverse inc.

  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.
*/

#import <Foundation/NSCharacterSet.h>
#import <Foundation/NSCalendarDate.h>
#import <Foundation/NSTimeZone.h>

#import <NGObjWeb/WOActionResults.h>
#import <NGObjWeb/WOResponse.h>
#import <NGExtensions/NSObject+Logs.h>
#import <NGCards/iCalEntityObject.h>

#import <SoObjects/SOGo/NSString+Utilities.h>

#import "SOGoAptMailNotification.h"

@interface SOGoAptMailNotification (PrivateAPI)

- (BOOL) isSubject;
- (void) setIsSubject: (BOOL) newIsSubject;

@end

@implementation SOGoAptMailNotification

static NSCharacterSet *wsSet = nil;
static NSTimeZone *UTC = nil;

+ (void) initialize
{
  if (!wsSet)
    {
      wsSet = [[NSCharacterSet whitespaceAndNewlineCharacterSet] retain];
      UTC = [[NSTimeZone timeZoneWithAbbreviation: @"UTC"] retain];
    }
}

- (void) dealloc
{
  [oldApt release];
  [newApt release];
  [homePageURL release];
  [viewTZ release];

  [oldStartDate release];
  [newStartDate release];
  [super dealloc];
}

- (id) oldApt
{
  return oldApt;
}

- (void) setOldApt: (iCalEntityObject *) newOldApt
{
  ASSIGN (oldApt, newOldApt);
}

- (id) newApt
{
  return newApt;
}

- (void) setNewApt: (iCalEntityObject *) newNewApt
{
  ASSIGN (newApt, newNewApt);
}

- (NSString *) homePageURL
{
  return homePageURL;
}

- (void) setHomePageURL: (NSString *) newhomePageURL
{
  ASSIGN (homePageURL, newhomePageURL);
}

- (NSString *) appointmentURL
{
  NSString *aptUID;

  aptUID = [[self newApt] uid];

  return [NSString stringWithFormat: @"%@/Calendar/personal/%@/edit?mail-invitation=yes",
		   [self homePageURL],
		   aptUID];
}

- (NSTimeZone *) viewTZ
{
  NSTimeZone *tz;

  if (viewTZ)
    tz = viewTZ;
  else 
    tz = UTC;

  return tz;
}

- (void) setViewTZ: (NSTimeZone *) newViewTZ
{
  ASSIGN (viewTZ, newViewTZ);
}

- (BOOL) isSubject
{
  return isSubject;
}

- (void) setIsSubject: (BOOL) newIsSubject
{
  isSubject = newIsSubject;
}

/* Helpers */

- (NSCalendarDate *) oldStartDate
{
  if (!oldStartDate)
    {
      ASSIGN (oldStartDate, [[self oldApt] startDate]);
      [oldStartDate setTimeZone: [self viewTZ]];
    }

  return oldStartDate;
}

- (NSCalendarDate *) newStartDate
{
  if (!newStartDate)
    {
      ASSIGN (newStartDate, [[self newApt] startDate]);
      [newStartDate setTimeZone: [self viewTZ]];
    }

  return newStartDate;
}

/* Generate Response */

- (NSString *) getSubject
{
  NSString *subject;

  [self setIsSubject: YES];
  subject = [[[self generateResponse] contentAsString]
	      stringByTrimmingCharactersInSet:wsSet];
  if (!subject)
    {
      [self errorWithFormat:@"Failed to properly generate subject! Please check "
	    @"template for component '%@'!",
	    [self name]];
      subject = @"ERROR: missing subject!";
    }

  return [subject asQPSubjectString: @"utf-8"];
}

- (NSString *) getBody
{
  [self setIsSubject:NO];

  return [[self generateResponse] contentAsString];
}

@end