//
// Copyright (c) 2014 Mixpanel. All rights reserved.

#import "MPValueTransformers.h"

@implementation MPUIFontToNSDictionaryValueTransformer

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

+ (BOOL)allowsReverseTransformation
{
    return YES;
}

- (id)transformedValue:(id)value
{
    if ([value isKindOfClass:[UIFont class]]) {
        UIFont *fontValue = value;

        return @{
            @"familyName": fontValue.familyName,
            @"fontName": fontValue.fontName,
            @"pointSize": @(fontValue.pointSize),
        };
    }

    return nil;
}

- (id)reverseTransformedValue:(id)value
{
    if ([value isKindOfClass:[NSDictionary class]]) {
        NSDictionary *dictionaryValue = value;

        NSNumber *pointSize = dictionaryValue[@"pointSize"];
        NSString *fontName = dictionaryValue[@"fontName"];

        float fontSize = [pointSize floatValue];
        if (fontSize > 0.0f && fontName) {
            UIFont *systemFont = [UIFont systemFontOfSize:fontSize];
            UIFont *boldSystemFont = [UIFont boldSystemFontOfSize:fontSize];
            UIFont *italicSystemFont = [UIFont italicSystemFontOfSize:fontSize];

            if ([systemFont.fontName isEqualToString:fontName]) {
                return systemFont;
            }
            else if ([boldSystemFont.fontName isEqualToString:fontName])
            {
                return boldSystemFont;
            }
            else if ([italicSystemFont.fontName isEqualToString:fontName])
            {
                return italicSystemFont;
            } else {
                return [UIFont fontWithName:fontName size:fontSize];
            }
        }
    }

    return nil;
}


@end