/*
  Copyright (C) 2000-2005 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.
*/

#import "common.h"
#include <LSFoundation/LSArrayFilterCommand.h>
#include "LSAppointment+Filters.h"

@interface LSFilterAMWeekDaysCommand : LSArrayFilterCommand
{
@private
  NSNumber       *weekDay;
  NSCalendarDate *mondayOfWeek;
  BOOL           withSeveralDays;
  BOOL           withAbsence;
  BOOL           withAttendance;
}

- (void)setWeekDay:(NSNumber *)_weekDay;
- (NSNumber *)weekDay;

@end

@implementation NSObject(AMWeekDaySelector)

- (BOOL)filterAMWeekDayWithSpec:(id)_ctx {
  NSCalendarDate *mondayOfWeek;
  NSCalendarDate *startDate, *endDate, *tmpSDate, *tmpEDate;
  int            startWeekDay, endWeekDay, startHour, dayNr;
  NSTimeInterval interval;
  BOOL startIsInWeek, endIsInWeek;
  
  if (![self filterOutAttendanceWithSpec:_ctx])
    return NO;
  
  if (![self filterOutAbsenceWithSpec:_ctx])
    return NO;

  if (![self filterOutSeveralDaysWithSpec:_ctx])
    return NO;
  
  mondayOfWeek = [_ctx valueForKey:@"mondayOfWeek"];
  startDate    = [self valueForKey:@"startDate"];
  endDate      = [self valueForKey:@"endDate"];
  tmpSDate     = startDate;
  tmpEDate     = endDate;
  startWeekDay = [startDate dayOfWeek]; 
  endWeekDay   = [endDate dayOfWeek]; 
  startHour    = [startDate hourOfDay];
  dayNr        = [[_ctx valueForKey:@"weekDay"] intValue];

  interval = [[self valueForKey:@"endDate"]
                    timeIntervalSinceDate:[self valueForKey:@"startDate"]];
  
  if (startWeekDay == 0) {
    tmpSDate     = [startDate yesterday];
    startWeekDay = 7;
  }
  if (endWeekDay == 0) {
    tmpEDate   = [endDate yesterday];
    endWeekDay = 7;
  }

  if ([tmpSDate isDateInSameWeek:mondayOfWeek] && (startWeekDay == dayNr))
    return (startHour < 12) ? YES : NO;
  
  if ([tmpEDate isDateInSameWeek:mondayOfWeek] && endWeekDay == dayNr)
    return YES;

  if (interval <= 86400.0)
    return NO;
  
  startIsInWeek = [tmpSDate isDateInSameWeek:mondayOfWeek];
  endIsInWeek   = [tmpEDate isDateInSameWeek:mondayOfWeek];
    
  if (startIsInWeek && endIsInWeek &&
      dayNr > startWeekDay && dayNr < endWeekDay)
    return YES;
    
  if (startIsInWeek && dayNr > startWeekDay && !endIsInWeek)
    return YES;
    
  if (endIsInWeek && dayNr < endWeekDay && ! startIsInWeek)
    return YES;

  if (!startIsInWeek && !endIsInWeek)
    return YES;
  
  return NO;
}

@end

@implementation LSFilterAMWeekDaysCommand

#if !LIB_FOUNDATION_BOEHM_GC
- (void)dealloc {
  RELEASE(self->weekDay);
  RELEASE(self->mondayOfWeek);
  [super dealloc];
}
#endif

// command methods

- (BOOL)includeObjectInResult:(id)_object {
  return [_object filterAMWeekDayWithSpec:self];
}

// accessors

- (void)setDateList:(NSArray *)_dateList {
  [self setObject:_dateList];
}
- (NSArray *)dateList {
  return [self object];
}

- (void)setWeekDay:(NSNumber *)_weekDay {
  ASSIGN(self->weekDay, _weekDay);
}
- (NSNumber *)weekDay {
  return self->weekDay;
}

- (void)setMondayOfWeek:(NSCalendarDate *)_monday {
  ASSIGN(self->mondayOfWeek, _monday);
}
- (NSCalendarDate *)mondayOfWeek {
  return self->mondayOfWeek;
}

- (void)setWithSeveralDays:(BOOL)_withSeveralDays {
  self->withSeveralDays = _withSeveralDays;
}
- (BOOL)withSeveralDays {
  return self->withSeveralDays;
}

- (void)setWithAbsence:(BOOL)_withAbsence {
  self->withAbsence = _withAbsence;
}
- (BOOL)withAbsence {
  return self->withAbsence;
}

- (void)setWithAttendance:(BOOL)_withAttendance {
  self->withAttendance = _withAttendance;
}
- (BOOL)withAttendance {
  return self->withAttendance;
}

// key/value coding

- (void)takeValue:(id)_value forKey:(id)_key {
  if ([_key isEqualToString:@"dateList"] || [_key isEqualToString:@"object"]) {
    [self setObject:_value];
    return;
  }
  else  if ([_key isEqualToString:@"weekDay"]) {
    [self setWeekDay:_value];
    return;
  }
  else  if ([_key isEqualToString:@"mondayOfWeek"]) {
    [self setMondayOfWeek:_value];
    return;
  }
  else  if ([_key isEqualToString:@"withSeveralDays"]) {
    [self setWithSeveralDays:[_value boolValue]];
    return;
  }
  else  if ([_key isEqualToString:@"withAbsence"]) {
    [self setWithAbsence:[_value boolValue]];
    return;
  }
  else  if ([_key isEqualToString:@"withAttendance"]) {
    [self setWithAttendance:[_value boolValue]];
    return;
  }  
  [super takeValue:_value forKey:_key];
}

- (id)valueForKey:(id)_key {
  if ([_key isEqualToString:@"dateList"] || [_key isEqualToString:@"object"])
    return [self object];
  else if ([_key isEqualToString:@"weekDay"])
    return [self weekDay];
  else if ([_key isEqualToString:@"mondayOfWeek"])
    return [self mondayOfWeek];
  else if ([_key isEqualToString:@"withSeveralDays"])
    return [NSNumber numberWithBool:self->withSeveralDays];
  else if ([_key isEqualToString:@"withAbsence"])
    return [NSNumber numberWithBool:self->withAbsence];
  else if ([_key isEqualToString:@"withAttendance"])
    return [NSNumber numberWithBool:self->withAttendance];
  return [super valueForKey:_key];
}

@end