/* UIxAppointmentActions.m - this file is part of SOGo
 *
 * Copyright (C) 2011-2016 Inverse inc.
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This file 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#import <Foundation/NSValue.h>

#import <NGExtensions/NSObject+Values.h>

#import <NGObjWeb/NSException+HTTP.h>
#import <NGObjWeb/SoPermissions.h>
#import <NGObjWeb/SoSecurityManager.h>
#import <NGObjWeb/WOContext+SoObjects.h>
#import <NGObjWeb/WORequest.h>

#import <NGCards/iCalCalendar.h>

#import <SOGo/NSCalendarDate+SOGo.h>
#import <SOGo/NSDictionary+Utilities.h>
#import <SOGo/NSString+Utilities.h>
#import <SOGo/SOGoUser.h>
#import <SOGo/SOGoUserDefaults.h>
#import <Appointments/iCalEvent+SOGo.h>
#import <Appointments/SOGoAppointmentObject.h>
#import <Appointments/SOGoAppointmentFolder.h>
#import <Appointments/SOGoAppointmentFolders.h>

#import "UIxAppointmentActions.h"

@implementation UIxAppointmentActions

- (WOResponse *) adjustAction
{
  WOResponse *response;
  WORequest *rq;
  SOGoAppointmentObject *co;
  SoSecurityManager *sm;
  iCalEvent *event;
  NSCalendarDate *start, *newStart, *end, *newEnd;
  NSDictionary *params, *jsonResponse;
  NSTimeInterval newDuration;
  SOGoUserDefaults *ud;
  NSNumber *daysDelta, *startDelta, *durationDelta;
  NSString *destionationCalendar;
  NSTimeZone *tz;
  NSException *ex;
  SOGoAppointmentFolder *targetCalendar, *sourceCalendar;
  SOGoAppointmentFolders *folders;
  BOOL forceSave;
  id error;

  rq = [context request];
  params = [[rq contentAsString] objectFromJSONString];

  daysDelta = [params objectForKey: @"days"];
  startDelta = [params objectForKey: @"start"];
  durationDelta = [params objectForKey: @"duration"];
  destionationCalendar = [params objectForKey: @"destination"];
  forceSave = [[params objectForKey: @"ignoreConflicts"] boolValue];

  if (daysDelta || startDelta || durationDelta)
    {
      co = [self clientObject];
      event = (iCalEvent *) [[self clientObject] occurence];

      start = [event startDate];
      end = [event endDate];

      if ([event isAllDay])
        {
          newStart = [start dateByAddingYears: 0 months: 0
                                         days: [daysDelta intValue]
                                        hours: 0 minutes: 0
                                      seconds: 0];
          newDuration = (((float) abs ([end timeIntervalSinceDate: start])
                          + [durationDelta intValue] * 60)
                         / 86400);
          [event setAllDayWithStartDate: newStart duration: newDuration];
        }
      else
        {
          ud = [[context activeUser] userDefaults];
          tz = [ud timeZone];
          [start setTimeZone: tz];
          [end setTimeZone: tz];
          newStart = [start dateByAddingYears: 0 months: 0
                                         days: [daysDelta intValue]
                                        hours: 0 minutes: [startDelta intValue]
                                      seconds: 0];

          newDuration = ([end timeIntervalSinceDate: start]
                         + [durationDelta intValue] * 60);
          newEnd = [newStart addTimeInterval: newDuration];

          [event setStartDate: newStart];
          [event setEndDate: newEnd];
        }

      if ([event hasRecurrenceRules])
        [event updateRecurrenceRulesUntilDate: end];

      [event setLastModified: [NSCalendarDate calendarDate]];
      ex = [co saveComponent: event  force: forceSave];

      // This condition will be executed only if the event is moved from a calendar to another. If destionationCalendar == 0; there is no calendar change
      if ([destionationCalendar length] > 0)
        {
          folders = [[self->context activeUser] calendarsFolderInContext: self->context];
          sourceCalendar = [co container];
          targetCalendar = [folders lookupName:[destionationCalendar stringValue] inContext: self->context  acquire: 0];
          // The event was moved to a different calendar.
          sm = [SoSecurityManager sharedSecurityManager];
          if (![sm validatePermission: SoPerm_DeleteObjects
                             onObject: sourceCalendar
                            inContext: context])
          {
            if (![sm validatePermission: SoPerm_AddDocumentsImagesAndFiles
                               onObject: targetCalendar
                              inContext: context])
              ex = [co moveToFolder: targetCalendar];
          }
        }

      if (ex)
        {
          unsigned int httpStatus;

          httpStatus = 500;

          if ([ex respondsToSelector: @selector(httpStatus)])
            httpStatus = [ex httpStatus];

          error = [[ex reason] objectFromJSONString];
          if (error == nil)
            error = [ex reason];
          jsonResponse = [NSDictionary dictionaryWithObjectsAndKeys:
                                         error, @"message",
                                       nil];

          response = [self responseWithStatus: httpStatus
                        andJSONRepresentation: jsonResponse];
        }
      else
        response = [self responseWith204];
    }
  else
    {
      jsonResponse = [NSDictionary dictionaryWithObjectsAndKeys:
                                     @"missing 'days', 'start' and/or 'duration' parameters", @"message",
                                   nil];
      response = [self responseWithStatus: 400
                    andJSONRepresentation: jsonResponse];
    }

  return response;
}

- (WOResponse *) _copyOrMoveAction: (BOOL) moving
{
  SOGoAppointmentFolder *sourceCalendar, *destinationCalendar;
  SOGoAppointmentObject *thisEvent;
  iCalCalendar *calendar;
  NSString *destination;
  SoSecurityManager *sm;
  NSDictionary *params;
  WOResponse *response;
  WORequest *rq;

  rq = [context request];
  params = [[rq contentAsString] objectFromJSONString];
  destination = [params objectForKey: @"destination"];

  if (![destination length])
    destination = @"personal";
  
  thisEvent = [self clientObject];
  sourceCalendar = [thisEvent container];
  destinationCalendar = [[sourceCalendar container] lookupName: destination
						     inContext: context
						       acquire: NO];
  if (destinationCalendar)
    {
      // Verify access rights to destination calendar
      sm = [SoSecurityManager sharedSecurityManager];
      if ([sm validatePermission: SoPerm_AddDocumentsImagesAndFiles
			onObject: destinationCalendar
		       inContext: context])
	{
	  response = [NSException exceptionWithHTTPStatus: 403
						   reason: @"Can't add event to destination calendar."];
	}
      else
	{
          calendar = [thisEvent calendar: NO secure: NO];

          if (moving)
            {
              // Perform the move
              if ([thisEvent moveToFolder: (SOGoGCSFolder *) destinationCalendar])
                response = [NSException exceptionWithHTTPStatus: 500
                                                         reason: @"Can't move event to destination calendar."];
              else
                response = [self responseWith204];
            }
          else
            {
              iCalRepeatableEntityObject *masterOccurence;
              NSArray *events;

              // Remove attendees, recurrence exceptions and single occurences from the event
              events = [calendar events];
              masterOccurence = [events objectAtIndex: 0];

              if ([masterOccurence hasAlarms])
                [masterOccurence removeAllAlarms];
              if ([masterOccurence hasRecurrenceRules])
                {
                  [masterOccurence removeAllExceptionRules];
                  [masterOccurence removeAllExceptionDates];
                }
              if ([[masterOccurence attendees] count] > 0)
                {
                  [masterOccurence setOrganizer: nil];
                  [masterOccurence removeAllAttendees];
                }
              [calendar setUniqueChild: masterOccurence];

              // Perform the copy
              if ([thisEvent copyComponent: calendar
                                  toFolder: (SOGoGCSFolder *) destinationCalendar])
                response = [NSException exceptionWithHTTPStatus: 500
                                                         reason: @"Can't copy event to destination calendar."];
              else
                response = [self responseWith204];
            }
	}
    }
  else
    {
      response = [NSException exceptionWithHTTPStatus: 404
					       reason: @"Can't find destination calendar."];
    }
  
  return response;
}

- (WOResponse *) copyAction
{
  return [self _copyOrMoveAction: NO];
}

- (WOResponse *) moveAction
{
  return [self _copyOrMoveAction: YES];
}

@end