/*
  Copyright (C) 2000-2007 SKYRIX Software AG
  Copyright (C) 2007      Helge Hess

  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 <LSFoundation/LSDBObjectBaseCommand.h>

/*
  appointment::conflicts
  
  This command fetches the appointments conflicting for a certain set of
  people/teams/resources in a certain timeframe.
  It can also fetch the "pending" conflicts for a specific appointment.
  
  The result of the fetch is either a set of appointments, either just the
  EOGlobalID's or the full EOs (as fetched by appointment::get-by-globalid).
  
  When the 'fetchConflictInfo' key is set, a dictionary is returned. The keys
  are the GIDs of the conflicting events and the value is an info record about
  the conflict.
  
  TODO: we have no way yet to say whether items in a staffList are optional.
        (role/status for the query items)
  
  Used in:
    ./DocumentAPI/OGoScheduler/SkySchedulerConflictDataSource.m
    ./Recycler/SandStorm/skyaptd/SkyAptAction+Conflicts.m
*/

@class NSArray, NSCalendarDate;

@interface LSGetDateWithConflictCommand : LSDBObjectBaseCommand
{
@private
  NSArray        *staffList;
  NSArray        *resourceList;
  id             appointment;
  NSCalendarDate *begin;
  NSCalendarDate *end;
  BOOL           fetchGlobalIDs;
  BOOL           fetchConflictInfo;
  NSArray        *conflictInfoAttributes; // for apt::list-participants
}

/* accessors */

- (void)setBegin:(id)_begin;
- (NSCalendarDate *)begin;
- (void)setEnd:(id)_end;
- (NSCalendarDate *)end;
- (void)setStaffList:(NSArray *)_staffList;
- (NSArray *)staffList;
- (void)setResourceList:(NSArray *)_resourceList;
- (NSArray *)resourceList;
- (BOOL)fetchGlobalIDs;

@end

#include "common.h"

#define RESOURCE_CSV_SEPARATOR @", "
#define STRING_DATE_FORMAT     @"%Y-%m-%d %H:%M:%S %Z"

@implementation LSGetDateWithConflictCommand

static NSNumber *nYes = nil;
static NSNumber *nNo  = nil;
static NSArray *startDateSortOrderings = nil;

+ (void)initialize {
  if (nYes == nil) nYes = [[NSNumber numberWithBool:YES] retain];
  if (nNo  == nil) nNo  = [[NSNumber numberWithBool:NO]  retain];

  if (startDateSortOrderings == nil) {
    startDateSortOrderings = [[NSArray alloc] initWithObjects:
                               [EOSortOrdering sortOrderingWithKey:@"startDate"
                                               selector:EOCompareAscending],
                              nil];
  }
}

- (void)dealloc {
  [self->conflictInfoAttributes release];
  [self->begin        release];
  [self->end          release];
  [self->staffList    release];
  [self->resourceList release];
  [self->appointment  release];
  [super dealloc];
}

/* command methods */

- (NSNumber *)pkeyFromCompanyObject:(id)item {
  if ([item isKindOfClass:[EOKeyGlobalID class]])
    return [(EOKeyGlobalID *)item keyValues][0];
  if ([item isKindOfClass:[NSNumber class]])
    return item;
  if ([item isNotNull])
    return [item valueForKey:@"companyId"];
  return nil;
}

- (NSNumber *)pkeyFromAptObject:(id)item {
  if ([item isKindOfClass:[EOKeyGlobalID class]])
    return [(EOKeyGlobalID *)item keyValues][0];
  if ([item isKindOfClass:[NSNumber class]])
    return item;
  if ([item isNotNull])
    return [item valueForKey:@"dateId"];
  return nil;
}

- (NSArray *)_staffIds {
  NSMutableSet *idSet;
  NSEnumerator *listEnum;
  id           item      = nil;

  idSet    = [NSMutableSet setWithCapacity:16];
  listEnum = [self->staffList objectEnumerator];
  
  while ((item = [listEnum nextObject]) != nil) {
    NSNumber *pKey;
    
    if ([(pKey = [self pkeyFromCompanyObject:item]) isNotNull])
      [idSet addObject:pKey];
    else
      [self errorWithFormat:@"got a staff-id which is nil!: %@", item];
  }
  return [idSet allObjects];
}

- (BOOL)_hasResourceConflictFor:(id)_appmt {
  NSArray  *res;
  NSArray  *cRes;
  NSString *rN;
  unsigned i, j, cnt, cnt2;
  
  if ((rN = [_appmt valueForKey:@"resourceNames"]) == nil)
    return NO;
  
  res  = self->resourceList;
  cRes = [rN componentsSeparatedByString:RESOURCE_CSV_SEPARATOR];
  
  for (i = 0, cnt = [res count], cnt2 = [cRes count]; i < cnt; i++) {
    for (j = 0; j < cnt2; j++) {
      if ([[res objectAtIndex:i] isEqualToString:[cRes objectAtIndex:j]])
        return YES;
    }
  }
  return NO;
}

- (EOSQLQualifier *)sqlQualifierToCheckResourceName:(NSString *)res
  formattedStartDate:(NSString *)_from formattedEndDate:(NSString *)_to
  adaptor:(EOAdaptor *)adaptor
{
  static EOAttribute *strAttribute = nil; // THREAD
  EOSQLQualifier *qualifier;
  NSString *s;
  NSString *tmp1, *tmp2, *tmp3, *tmp4;
  
  if (strAttribute == nil) {
    /* Note: we can do this because we use just one model */
    strAttribute = [[[self entity] attributeNamed:@"resourceNames"] copy];
  }
  
  tmp1 = [adaptor formatValue:res forAttribute:strAttribute];
  s    = [res stringByAppendingString:@",%"];
  tmp2 = [adaptor formatValue:s forAttribute:strAttribute];
  s    = [@"%, " stringByAppendingString:res];
  tmp3 = [adaptor formatValue:s forAttribute:strAttribute];
  s    = [s stringByAppendingString:@",%"];
  tmp4 = [adaptor formatValue:s forAttribute:strAttribute]; 
  
  qualifier =
    [[EOSQLQualifier alloc] initWithEntity:[self entity]
                            qualifierFormat:
                              @"%A > %@ AND %A < %@ AND "
                              @"(%A LIKE %@ OR  %A LIKE %@ "
                              @"OR (%A LIKE %@)"
                              @"OR (%A LIKE %@))"
                              @"AND (%A = 0 OR %A IS NULL) "
                              @"AND (%A = 0 OR %A IS NULL)",
                              /* Note: end start/end reverse is intentional! */
                              @"endDate",   _from,
                              @"startDate", _to,
                              @"resourceNames", tmp1, @"resourceNames", tmp2,
                              @"resourceNames", tmp3, @"resourceNames", tmp4,
                              @"isAttendance", @"isAttendance",
                              @"isConflictDisabled", @"isConflictDisabled"];
  return qualifier;
}

- (NSArray *)_resourceConflicts {
  static EOAttribute *startDateAttr = nil, *endDateAttr = nil; // THREAD
  NSString          *formattedBegin = nil;
  NSString          *formattedEnd   = nil;
  EOAdaptor         *adaptor;
  EODatabaseChannel *channel;
  NSArray           *gids;
  int               resCnt;
  int               cnt;
  
  if (startDateAttr == nil) {
    startDateAttr = [[[self entity] attributeNamed:@"startDate"] retain];
    endDateAttr   = [[[self entity] attributeNamed:@"endDate"] retain];
  }
  
  adaptor = [self databaseAdaptor];
  channel = [self databaseChannel];
  
  formattedBegin= [adaptor formatValue:self->begin forAttribute:startDateAttr];
  formattedEnd  = [adaptor formatValue:self->end   forAttribute:endDateAttr];

  resCnt = [self->resourceList count];
  gids   = [NSArray array];

  for (cnt = 0; cnt < resCnt; cnt++) {
    EOSQLQualifier *qualifier;
    NSArray  *tgids;
    NSString *res;

    res = [self->resourceList objectAtIndex:cnt];
    
    qualifier = [self sqlQualifierToCheckResourceName:res
                      formattedStartDate:formattedBegin
                      formattedEndDate:formattedEnd
                      adaptor:adaptor];
    
    if ([self->appointment isNotNull]) {
      EOSQLQualifier *selfQual = nil;
      
      selfQual = [[EOSQLQualifier alloc] 
                   initWithEntity:[self entity]
                   qualifierFormat:@"%A <> %@",
                   @"dateId", [self pkeyFromAptObject:self->appointment]];
      [qualifier conjoinWithQualifier:selfQual];
      [selfQual release]; selfQual = nil;
    }
    [qualifier setUsesDistinct:YES];
    
    tgids = [channel globalIDsForSQLQualifier:qualifier
                     sortOrderings:nil];

    [qualifier release]; qualifier = nil;
    
    if ([tgids count] > 0)
      gids = [gids arrayByAddingObjectsFromArray:tgids];
  }

  return gids;
}

- (EOSQLQualifier *)_qualifier:(NSArray *)_ids {
  id             formattedBegin = nil;
  id             formattedEnd   = nil;
  EOSQLQualifier *qualifier     = nil;
  EOAdaptor      *adaptor;
  EOEntity       *myEntity;
  EOAttribute    *startDateAttr;
  EOAttribute    *endDateAttr;
  
  adaptor       = [self databaseAdaptor];
  myEntity      = [self entity];
  startDateAttr = [myEntity attributeNamed:@"startDate"];
  endDateAttr   = [myEntity attributeNamed:@"endDate"];

  formattedBegin =
    [adaptor formatValue:self->begin forAttribute:startDateAttr];
  formattedEnd   =
    [adaptor formatValue:self->end   forAttribute:endDateAttr];

  /*
    Note: the @"endDate", formattedBegin, @"startDate", formattedEnd is
          intentional!
  */
  
  // TODO: how can the staffList be empty? What is supposed to happen in this
  //       case?
  if ([self->staffList isNotEmpty]) { // TODO: should be "[in isNotEmpty]"?
    NSString *in;
    NSString *pattern;
    
    pattern =
      @"(%A > %@) AND (%A < %@) "
      @"AND (%A = 0 OR %A IS NULL) "
      @"AND (%A = 0 OR %A IS NULL) "
      @"AND ((%A IN (%@)) AND "
      // conflict for NEED-INFO CHAIR and REQ-PART events and then for all
      // ACCEPTED/TENTATIVE events (unless used with a non-part)
      // args: stat, stat, role, role, role, stat, stat, role
      // TODO: move to an own qualifier which is static and conjoined?
      @"(((%A IS NULL OR %A = 'NEEDS-ACTION') AND "
      @"  (%A = 'CHAIR' OR %A = 'REQ-PARTICIPANT' OR %A IS NULL)) "
      @" OR "
      @" ((%A = 'ACCEPTED' OR %A = 'TENTATIVE') AND "
      @"  (NOT %A = 'NON-PARTICIPANT')))"
      @")"
      ;

    
    in = [self joinPrimaryKeysFromArrayForIN:_ids];
    qualifier = [[EOSQLQualifier alloc] 
                  initWithEntity:myEntity
                  qualifierFormat:pattern,
                  @"endDate",   formattedBegin,
                  @"startDate", formattedEnd,
                  @"isAttendance",
                  @"isAttendance",
                  @"isConflictDisabled",
                  @"isConflictDisabled",
                  @"toDateCompanyAssignment.companyId",
                  in,
                  @"toDateCompanyAssignment.partStatus",
                  @"toDateCompanyAssignment.partStatus",
                  @"toDateCompanyAssignment.role",
                  @"toDateCompanyAssignment.role",
                  @"toDateCompanyAssignment.role",
                  @"toDateCompanyAssignment.partStatus",
                  @"toDateCompanyAssignment.partStatus",
                  @"toDateCompanyAssignment.role"
                 ];
  }
  else { // TODO: find out when this happens
    [self logWithFormat:@"Note: queried w/o staffList."];
    qualifier = [[EOSQLQualifier alloc]
                                 initWithEntity:myEntity
                                 qualifierFormat:
                                 @"(%A > %@) AND (%A < %@) "
                                 @"AND (%A=0 OR %A IS NULL) "
                                 @"AND (%A=0 OR %A IS NULL) ",
                                 @"endDate",   formattedBegin,
                                 @"startDate", formattedEnd,
                                 @"isAttendance",
                                 @"isAttendance",
                                 @"isConflictDisabled",
                                 @"isConflictDisabled"];
  }
  if (self->appointment != nil) {
    EOSQLQualifier *selfQual = nil;
    
    selfQual = [[EOSQLQualifier alloc] initWithEntity:myEntity
                 qualifierFormat:
                 @"%A <> %@",
                 @"dateId",                      
                 [self->appointment valueForKey:@"dateId"]];
    [qualifier conjoinWithQualifier:selfQual];
    [selfQual release]; selfQual = nil;
  }
  [qualifier setUsesDistinct:YES];

  return [qualifier autorelease];
}

- (void)_addMembersOfTeam:(id)staff toStaffSet:(NSMutableSet *)staffSet
  inContext:(LSCommandContext *)_ctx
{
  NSArray *members;

  if ([staff isKindOfClass:[EOGlobalID class]]) {
    [self errorWithFormat:@"%s: cannot process EOGlobalIDs yet: %@",
          __PRETTY_FUNCTION__, staff];
    return;
  }
  
  if ((members = [staff valueForKey:@"members"]) == nil) {
    LSRunCommandV(_ctx, @"team", @"members", @"object", staff, nil);
    //was: [staff call:@"team::members", nil];
    members = [staff valueForKey:@"members"];
  }
  [staffSet addObjectsFromArray:members];
}

- (void)_addTeamsOfAccount:(id)staff toStaffSet:(NSMutableSet *)staffSet
  inContext:(LSCommandContext *)_ctx
{
  NSArray *groups;
      
  if ((groups = [staff valueForKey:@"groups"]) == nil) {
    LSRunCommandV(_ctx, @"account", @"teams", @"object", staff, nil);
    //was: [staff call:@"account::teams", nil];
    groups = [staff valueForKey:@"groups"];
  }
  [staffSet addObjectsFromArray:groups];
}

- (BOOL)isTeamStaffObject:(id)_object {
  if (![_object isNotNull])
    return NO;

  if ([_object isKindOfClass:[EOGlobalID class]])
    return [[_object entityName] isEqualToString:@"Team"];
  
  return [[_object valueForKey:@"isTeam"] boolValue];
}

- (BOOL)isAccountStaffObject:(id)_object {
  if (![_object isNotNull])
    return NO;

  if ([_object isKindOfClass:[EOGlobalID class]]) {
    if (![[_object entityName] isEqualToString:@"Person"])
      return NO;
    
    // TODO: fetch isAccount flag to check whether the GID is an account
  }
  
  return [[_object valueForKey:@"isAccount"] boolValue];
}

- (void)_prepareForExecutionInContext:(id)_context {
  int          i, cnt;
  NSMutableSet *staffSet = nil;
  NSArray      *newStaff = nil;
  
  if ([self->appointment isNotNull]) {
    /* turn GIDs into real apt */
    if ([self->appointment isKindOfClass:[EOGlobalID class]]) {
      id tmp;
      
      tmp = LSRunCommandV(_context, @"appointment", @"get-by-globalid",
                          @"gid", self->appointment, nil);
      if ([tmp isKindOfClass:[NSArray class]])
        tmp = [tmp lastObject];

      if ([tmp isNotNull]) {
        ASSIGN(self->appointment, tmp);
      }
      else {
        [self errorWithFormat:@"could not fetch appointment for GID: %@", 
              self->appointment];
        ASSIGN(self->appointment, nil);
      }
    }
    
    /* setup begin/end from 'appointment' when available */
    if (self->begin == nil && self->end == nil) {
      self->begin = [[self->appointment valueForKey:@"startDate"] copy];
      self->end   = [[self->appointment valueForKey:@"endDate"]   copy];
    }
    
    /* setup staff/resources from 'appointment' when available */
    if (self->resourceList == nil && self->staffList == nil) {
      id tmp;
      
      tmp = [self->appointment valueForKey:@"resourceNames"];
      if ([tmp isNotEmpty]) {
        self->resourceList =
	  [[tmp componentsSeparatedByString:RESOURCE_CSV_SEPARATOR] copy];
      }
      
      tmp = [self->appointment valueForKey:@"participants"];
      if (![tmp isNotEmpty]) {
        tmp = LSRunCommandV(_context, @"appointment", @"get-participants",
                            @"appointment", self->appointment, nil);
      }
      
      if ([tmp isNotEmpty])
        self->staffList = [tmp retain];
      else {
        [self errorWithFormat:@"could not detect participants: %@", 
              self->appointment];
      }
    }
  }
  
  /* fixup stafflist for processing */
  
  cnt      = [self->staffList count];
  staffSet = [NSMutableSet setWithCapacity:cnt];
  
  for (i = 0; i < cnt; i++) {
    id staff;
    
    staff = [self->staffList objectAtIndex:i];
    
    if ([[staff valueForKey:@"role"] isEqual:@"NON-PARTICIPANT"])
      continue;
    
    [staffSet addObject:staff];
    
    /*
      If you check whether a team is 'available', you need to know whether
      all of the members are available.
      
      If you check whether an account is 'available', you need to know whether
      any of the teams the account is in are booked.
    */
    if ([self isTeamStaffObject:staff])
      [self _addMembersOfTeam:staff toStaffSet:staffSet inContext:_context];
    else if ([self isAccountStaffObject:staff])
      [self _addTeamsOfAccount:staff toStaffSet:staffSet inContext:_context];
  }
  
  newStaff = [staffSet allObjects];
  ASSIGN(self->staffList, newStaff);
}

- (id)fetchConflictInfoForGIDs:(NSArray *)_gids inContext:(id)_ctx {
  static NSArray *rattrs;
  NSMutableDictionary *conflictInfoMap;
  NSDictionary *partInfoMap;
  NSArray      *attrs;
  NSSet        *staffPKeys;
  unsigned     i, count;
  
  if (rattrs == nil) {
    rattrs = [[NSArray alloc] initWithObjects:
                               @"dateId", @"companyId", @"partStatus", @"role",
                               @"team.globalID", @"team.isTeam",
                               // not required?: @"team.members",
                               @"team.companyId", 
                               @"person.globalID",
			      nil];
  }
  if ([self->conflictInfoAttributes count] > 0) {
    NSMutableSet *ms;

    ms = [[NSMutableSet alloc] initWithCapacity:32];
    [ms addObjectsFromArray:rattrs];
    [ms addObjectsFromArray:self->conflictInfoAttributes];
    attrs = [[[ms allObjects] copy] autorelease];
    [ms release]; ms = nil;
  }
  else
    attrs = rattrs;

  if (_gids == nil)
    return nil;
  if ((count = [_gids count]) == 0)
    return [NSDictionary dictionary];
  
  /* fetch participant-status/type information */
  
  partInfoMap = [_ctx runCommand:@"appointment::list-participants",
                        @"gids",       _gids,
                        @"attributes", attrs,
                        @"groupBy", @"dateId",
                        @"listCSVResources", [NSNumber numberWithBool:YES],
                      nil];
  // [self logWithFormat:@"X: %@", partInfoMap];
  
  /* collect primary keys of teams/accounts */
  
  staffPKeys = [NSSet setWithArray:[self->staffList valueForKey:@"companyId"]];
  
  /* walk over each GID and check participant/resource conflicts */
  
  conflictInfoMap = [NSMutableDictionary dictionaryWithCapacity:count];
  for (i = 0; i < count; i++) {
    NSMutableArray *conflictParts;
    EOKeyGlobalID  *gid;
    NSArray        *partInfos;
    unsigned       j, jcount;
    
    gid       = [_gids objectAtIndex:i];
    partInfos = [partInfoMap objectForKey:[gid keyValues][0]];
    
    //[self logWithFormat:@"check %@ ..", gid];
    
    /* check each participant-info */
    
    jcount        = [partInfos count];
    conflictParts = [[NSMutableArray alloc] initWithCapacity:jcount + 1];
    
    for (j = 0; j < jcount; j++) {
      NSDictionary *partInfo;
      id tmp;
      
      partInfo = [partInfos objectAtIndex:j];

      if ([(tmp = [partInfo valueForKey:@"companyId"]) isNotNull]) {
        if ([staffPKeys containsObject:tmp])
          [conflictParts addObject:partInfo];
      }
      
      if ([(tmp = [partInfo valueForKey:@"resourceName"]) isNotNull]) {
        if ([self->resourceList containsObject:tmp])
          [conflictParts addObject:partInfo];
      }
    }
    
    // TODO: check resources (could be returned as an opt by parts::list?)
    
    /* register results */
    [conflictInfoMap setObject:conflictParts forKey:gid];
    [conflictParts release]; conflictParts = nil;
  }
  
  return conflictInfoMap;
}

- (void)_executeInContext:(id)_ctx {
  NSMutableArray    *gids;
  NSMutableArray    *currentIds;
  EODatabaseChannel *channel;
  NSArray           *idTmp;
  NSArray           *gidsTmp;
  int cnt    = 0;
  int cntIds = 0;
  int max    = 0;
  
  channel    = [self databaseChannel];
  gids       = [[NSMutableArray alloc] initWithCapacity:16];
  currentIds = [[NSMutableArray alloc] initWithCapacity:16];
  
  [currentIds addObjectsFromArray:[self _staffIds]];

  max    = 240;
  cntIds = [currentIds count];

  while (cntIds > 0) {
    if (cntIds > max) {
      idTmp = [currentIds subarrayWithRange:NSMakeRange(cnt, max)];
      cntIds = cntIds - max;
      cnt   += 240;
    }
    else {
      idTmp  = [currentIds subarrayWithRange:NSMakeRange(cnt , cntIds)];
      cntIds = 0;
    }

    gidsTmp = [channel globalIDsForSQLQualifier:[self _qualifier:idTmp]
                       sortOrderings:nil];

    if (gidsTmp == nil)
      [self assert:NO reason:[dbMessages description]];

    [gids addObjectsFromArray:gidsTmp];
  }
  
  if (self->resourceList != nil) {
    if (![self->resourceList isNotNull]) {
#if DEBUG
      [self warnWithFormat:@"self->resourceList is NSNull .."];
#endif
      ;
    }
    else {
      if ([self->resourceList count] > 0)
        [gids addObjectsFromArray:[self _resourceConflicts]];
    }
  }
  
  if (!self->fetchGlobalIDs) {
    NSArray *eos;
    
    /* fetch objects */
    eos = LSRunCommandV(_ctx,
                        @"appointment", @"get-by-globalid",
                        @"gids",          gids,
                        @"sortOrderings", startDateSortOrderings,
                        nil);
    [self setReturnValue:eos];
    
    if (self->fetchConflictInfo) // TODO: why is that?
      [self errorWithFormat:@"Can only fetch conflict-info in GID mode!"];
  }
  else if (!self->fetchConflictInfo)
    [self setReturnValue:gids];
  else
    [self setReturnValue:[self fetchConflictInfoForGIDs:gids inContext:_ctx]];
  [gids       release]; gids       = nil;  
  [currentIds release]; currentIds = nil;
}

/* record initializer */

- (NSString *)entityName {
  return @"Date";
}


/* accessors */

- (void)setBegin:(id)_begin {
  if ([_begin isKindOfClass:[NSString class]]) {
    NSString *s = (NSString *)_begin;
    if ([s isNotEmpty]) {
      _begin = [NSCalendarDate dateWithString:s
			       calendarFormat:STRING_DATE_FORMAT];
      if (_begin == nil)
	[self errorWithFormat:@"could not parse date string: %@", s];
    }
    else
      _begin = nil;
  }
  
  ASSIGNCOPY(self->begin, _begin);
}
- (NSCalendarDate *)begin {
  return self->begin;
}

- (void)setEnd:(id)_end {
  if ([_end isKindOfClass:[NSString class]]) {
    NSString *s = (NSString *)_end;
    if ([s isNotEmpty]) {
      _end = [NSCalendarDate dateWithString:s
			     calendarFormat:STRING_DATE_FORMAT];
      if (_end == nil)
	[self errorWithFormat:@"could not parse date string: %@", s];
    }
    else
      _end = nil;
  }
  
  ASSIGNCOPY(self->end, _end);
}
- (NSCalendarDate *)end {
  return self->end;
}

- (void)setBeginFromString:(NSString *)_beginString {
  // TBD: who uses those, document
  [self setBegin:(NSCalendarDate *)_beginString];
}
- (void)setEndFromString:(NSString *)_endString {
  [self setEnd:(NSCalendarDate *)_endString];
}

- (void)setStaffList:(NSArray *)_staffList {
  ASSIGN(self->staffList, _staffList);
}
- (NSArray *)staffList {
  return self->staffList ;
}

- (void)setAppointment:(id)_apt {
  ASSIGN(self->appointment, _apt);
}
- (id)appointment {
  return self->appointment ;
}

- (void)setResourceList:(NSArray *)_resourceList {
  if (![_resourceList isNotNull]) {
    //[self errorWithFormat:@"resourcelist is null !"];
    _resourceList = nil;
  }
  
  ASSIGN(self->resourceList, _resourceList);
}
- (NSArray *)resourceList {
  return self->resourceList ;
}

- (void)setConflictInfoAttributes:(NSArray *)_attrs {
  ASSIGNCOPY(self->conflictInfoAttributes, _attrs);
}
- (NSArray *)conflictInfoAttributes {
  return self->conflictInfoAttributes ;
}

- (void)setFetchGlobalIDs:(BOOL)_flag {
  self->fetchGlobalIDs = _flag;
}
- (BOOL)fetchGlobalIDs {
  return self->fetchGlobalIDs;
}

- (void)setFetchConflictInfo:(BOOL)_flag {
  self->fetchConflictInfo = _flag;
}
- (BOOL)fetchConflictInfo {
  return self->fetchConflictInfo;
}


/* key/value coding */

- (void)takeValue:(id)_value forKey:(NSString *)_key {
  if ([_key isEqualToString:@"begin"]) {
    if ([_value isKindOfClass:[NSCalendarDate class]])
      [self setBegin:_value];
    else
      [self setBeginFromString:[_value stringValue]];      
  }
  else if ([_key isEqualToString:@"end"]) {
    if ([_value isKindOfClass:[NSCalendarDate class]])
      [self setEnd:_value];
    else
      [self setEndFromString:[_value stringValue]];
  }
  else if ([_key isEqualToString:@"appointment"]) 
    [self setAppointment:_value];
  else if ([_key isEqualToString:@"staffList"])
    [self setStaffList:_value];
  else if ([_key isEqualToString:@"resourceList"])
    [self setResourceList:_value];
  else if ([_key isEqualToString:@"fetchGlobalIDs"])
    [self setFetchGlobalIDs:[_value boolValue]];
  else if ([_key isEqualToString:@"fetchConflictInfo"])
    [self setFetchConflictInfo:[_value boolValue]];
  else if ([_key isEqualToString:@"conflictInfoAttributes"])
    [self setConflictInfoAttributes:([_value isNotNull] ? _value : nil)];
  else
    [super takeValue:_value forKey:_key];
}

- (id)valueForKey:(NSString *)_key {
  if ([_key isEqualToString:@"begin"])
    return [self begin];
  if ([_key isEqualToString:@"end"])
    return [self end];
  if ([_key isEqualToString:@"appointment"])
    return [self appointment];
  if ([_key isEqualToString:@"staffList"])
    return [self staffList];
  if ([_key isEqualToString:@"resourceList"])
    return [self resourceList];
  if ([_key isEqualToString:@"fetchGlobalIDs"])
    return [NSNumber numberWithBool:[self fetchGlobalIDs]];
  if ([_key isEqualToString:@"fetchConflictInfo"])
    return [NSNumber numberWithBool:[self fetchConflictInfo]];
  if ([_key isEqualToString:@"conflictInfoAttributes"])
    return [self conflictInfoAttributes];

  return [super valueForKey:_key];
}

@end /* LSGetDateWithConflictCommand */