//
//  LastCompletedSyncTransformer.m
//  pithos-macos
//
// Copyright 2011 GRNET S.A. All rights reserved.
//
// Redistribution and use in source and binary forms, with or
// without modification, are permitted provided that the following
// conditions are met:
// 
//   1. Redistributions of source code must retain the above
//      copyright notice, this list of conditions and the following
//      disclaimer.
// 
//   2. Redistributions in binary form must reproduce the above
//      copyright notice, this list of conditions and the following
//      disclaimer in the documentation and/or other materials
//      provided with the distribution.
// 
// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
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// The views and conclusions contained in the software and
// documentation are those of the authors and should not be
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// or implied, of GRNET S.A.

#import "LastCompletedSyncTransformer.h"

@implementation LastCompletedSyncTransformer

+ (Class)transformedValueClass {
	return [NSString class];
}

+ (BOOL)allowsReverseTransformation {
	return NO;
}

- (id)transformedValue:(id)value {
    if (value == nil)
		return @"Last Sync: -";
    
    NSCalendar *calendar = [NSCalendar currentCalendar];
    NSDateComponents *comps = [calendar components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit) fromDate:[NSDate date]];
    [comps setHour:23];
    [comps setMinute:59];
    [comps setSecond:59];    
    NSTimeInterval timeInterval = [[calendar dateFromComponents:comps] timeIntervalSinceDate:(NSDate *)value];
    if (timeInterval < 86400) {
        // Today
        return [NSString stringWithFormat:@"Last Sync: Today %@", [NSDateFormatter localizedStringFromDate:(NSDate *)value 
                                                                                                     dateStyle:NSDateFormatterNoStyle 
                                                                                                     timeStyle:NSDateFormatterShortStyle]];
    } else if (timeInterval < 172800) {
        // Yesterday
        return [NSString stringWithFormat:@"Last Sync: Yesterday %@", [NSDateFormatter localizedStringFromDate:(NSDate *)value 
                                                                                           dateStyle:NSDateFormatterNoStyle 
                                                                                           timeStyle:NSDateFormatterShortStyle]];
    } else {
        return [NSString stringWithFormat:@"Last Sync: %@", [NSDateFormatter localizedStringFromDate:(NSDate *)value 
                                                                                           dateStyle:NSDateFormatterShortStyle 
                                                                                           timeStyle:NSDateFormatterShortStyle]];
    }
}

+ (void)initialize {
    [[NSValueTransformer class] setValueTransformer:[self new] forName:@"LastCompletedSyncTransformer"];
}

@end