//
//  NSDictionary+JKBlock.m
//  JKCategories (https://github.com/shaojiankui/JKCategories)
//
//  Created by Jakey on 15/5/22.
//  Copyright (c) 2015年 www.skyfox.org. All rights reserved.
//

#import "NSDictionary+JKBlock.h"

@implementation NSDictionary (JKBlock)


#pragma mark - RX
- (void)jk_each:(void (^)(id k, id v))block {
    [self enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
        block(key, obj);
    }];
}

- (void)jk_eachKey:(void (^)(id k))block {
    [self enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
        block(key);
    }];
}

- (void)jk_eachValue:(void (^)(id v))block {
    [self enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
        block(obj);
    }];
}

- (NSArray *)jk_map:(id (^)(id key, id value))block {
    NSMutableArray *array = [NSMutableArray array];
    
    [self enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
        id object = block(key, obj);
        if (object) {
            [array addObject:object];
        }
    }];
    
    return array;
}


- (NSDictionary *)jk_pick:(NSArray *)keys {
    NSMutableDictionary *picked = [[NSMutableDictionary alloc] initWithCapacity:keys.count];
    
    [self enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
        if ([keys containsObject:key]) {
            picked[key] = obj;
        }
    }];
    
    return picked;
}

- (NSDictionary *)jk_omit:(NSArray *)keys {
    NSMutableDictionary *omitted = [[NSMutableDictionary alloc] initWithCapacity:([self allKeys].count - keys.count)];
    
    [self enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
        if (![keys containsObject:key]) {
            omitted[key] = obj;
        }
    }];
    
    return omitted;
}

- (BOOL)jk_hasKey:(NSString *)key
{
    return [self objectForKey:key] != nil;
}

@end