submitRestoredTransaction

#pragma mark -
#pragma mark Subscription restore request methods

- (void)submitRestoredTransaction:(SKPaymentTransaction *)transaction {
    UASubscriptionProduct *product = [[UASubscriptionManager shared].inventory productForKey:transaction.payment.productIdentifier];
    NSString *key = product.subscriptionKey;
    NSString *product_id = transaction.payment.productIdentifier;
    NSString *receipt = [[[NSString alloc] initWithData:transaction.transactionReceipt
                                               encoding:NSUTF8StringEncoding] autorelease];
    
    if (!product.isForSale) {
        UALOG(@"Ignoring transaction for deleted product %@", product_id);
        [unrestoredTransactions removeObject:transaction];
        [self safelyFinishTransaction:transaction];
        return;
    }
              
    NSString *urlString = [NSString stringWithFormat:@"%@%@%@/subscriptions/%@/purchase",
                           [[UAirship shared] server],
                           @"/api/user/",
                           [UAUser defaultUser].username,
                           key];
    
    UA_ASIHTTPRequest *request = [UAUtils userRequestWithURL:[NSURL URLWithString:urlString]
                                                      method:@"POST"
                                                    delegate:self
                                                      finish:@selector(autorenewableRestoredWithRequest:)
                                                        fail:@selector(autorenewableRestoreRequestDidFail:)];
    
    request.userInfo = [NSDictionary dictionaryWithObject:transaction forKey:@"transaction"];
    
    UA_SBJsonWriter *writer = [[UA_SBJsonWriter alloc] init];
    writer.humanReadable = NO;
    
    NSMutableDictionary *data = [[NSMutableDictionary alloc] initWithObjectsAndKeys:
                                 product_id,
                                 @"product_id",
                                 receipt,
                                 @"transaction_receipt",
                                 nil];
    NSString *body = [writer stringWithObject:data];
    [data release];
    [writer release];
    
    [request addRequestHeader:@"Content-Type" value:@"application/json"];
    [request appendPostData:[body dataUsingEncoding:NSUTF8StringEncoding]];
    
    [networkQueue addOperation:request];
}