SimplePurchase/Classes/Purchaser.m at 01761d998ff7c2a938b57d996d4c728fefac1219 · chendry/SimplePurchase · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95

#import <StoreKit/StoreKit.h>
#import "Purchaser.h"
#import "ProductCache.h"

@implementation Purchaser
{
    ProductCache *_cache;
    NSMutableDictionary *_observers;
    NSMutableDictionary *_blocks;
}

- (id)init
{
    if (self = [super init])
    {
        _cache = [[ProductCache alloc] init];
        _observers = [[NSMutableDictionary alloc] init];
        _blocks = [[NSMutableDictionary alloc] init];

        [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
    }

    return self;
}

- (void)addObserverForProduct:(NSString *)productId block:(void(^)(SKPaymentTransaction *transaction))block
{
    if (!_observers[productId])
        [_observers setObject:[[NSMutableArray alloc] init] forKey:productId];

    NSMutableArray *array = _observers[productId];
    [array addObject:block];
}

- (void)buyProduct:(NSString *)productId block:(void (^)(NSError *))block
{
    [_cache loadProduct:productId block:^(SKProduct *product, NSError *error)
     {
         if (error)
             block(error);
         else
         {
             [_blocks setObject:block forKey:productId];
             [[SKPaymentQueue defaultQueue] addPayment:[SKPayment paymentWithProduct:product]];
         }
     }];
}

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
    for (SKPaymentTransaction *t in transactions)
    {
        if (![self transactionIsComplete:t])
            continue;

        void (^block)(NSError *) = _blocks[t.payment.productIdentifier];

        if (block)
        {
            block(t.error);
            [_blocks removeObjectForKey:t.payment.productIdentifier];
        }

        if ([self transactionIsSuccess:t])
            [self notifyObserversForProduct:t.payment.productIdentifier transaction:t];
    }
}

- (BOOL)transactionIsComplete:(SKPaymentTransaction *)transaction
{
    return
        transaction.transactionState == SKPaymentTransactionStatePurchased ||
        transaction.transactionState == SKPaymentTransactionStateRestored ||
        transaction.transactionState == SKPaymentTransactionStateFailed;
}

- (BOOL)transactionIsSuccess:(SKPaymentTransaction *)transaction
{
    return
        transaction.transactionState == SKPaymentTransactionStatePurchased ||
        transaction.transactionState == SKPaymentTransactionStateRestored;
}

- (void)notifyObserversForProduct:(NSString *)productId transaction:(SKPaymentTransaction *)transaction
{
    for (void(^block)(SKPaymentTransaction *) in _observers[productId])
        block(transaction);
}

- (void)paymentQueue:(SKPaymentQueue *)queue updatedDownloads:(NSArray *)downloads
{
}

@end