//
//  IAPHelper.mm
//  battle-array
//
//  Created by Chongqing Challeng Technology Co.,Ltd. on 16/1/13.
//  Copyright © 2016年 Chongqing Challeng Technology Co.,Ltd. All rights reserved.
//

#import "IAPHelper.h"
#import <Foundation/Foundation.h>
#import <StoreKit/StoreKit.h>


@implementation IAPHelper

@synthesize products;
@synthesize productId;


-(id)init{
    
    [[SKPaymentQueue defaultQueue]addTransactionObserver:(id)self];
    return self;
    
}

-(void)fetchProducts{
    
    SKProductsRequest *request = [[SKProductsRequest alloc]initWithProductIdentifiers:[NSSet setWithArray:@[@"VIP3", @"C90000"]]];
    request.delegate = (id)self;
    [request start];
    
}

-(void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(nonnull SKProductsResponse *)response{
    
    products = response.products;
    for (SKProduct *product in products) {
        NSLog(@"Product %@ %@", product.productIdentifier, product.price.stringValue);
    }
    NSLog(@"Product was got");
    if(productId != nil)
    {
        [self buy:productId];
        productId = nil;
    }
}

-(void)request:(SKRequest *)request didFailWithError:(nonnull NSError *)error{
    
    NSLog(@"%@", error);
    
}

-(void)buy:(NSString *)pid{
    
    for (SKProduct *product in products)
    {
        if(product.productIdentifier == pid)
        {
            SKPayment *payment = [SKPayment paymentWithProduct:product];
            [[SKPaymentQueue defaultQueue]addPayment:payment];
            NSLog(@"Buy %@", product.productIdentifier);
            break;
        }
    }
    
}


-(void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(nonnull NSArray<SKPaymentTransaction *> *)transactions{
    
    for (SKPaymentTransaction *tx in transactions) {
        switch (tx.transactionState) {
            case SKPaymentTransactionStatePurchased:
                [[SKPaymentQueue defaultQueue]finishTransaction:tx];
                [self paymentSuccess:tx];
                break;
                
            case SKPaymentTransactionStateFailed:
                [[SKPaymentQueue defaultQueue]finishTransaction:tx];
                NSLog(@"Error: %@", tx.error);
                [self paymentFailed:tx];
                break;
                
            case SKPaymentTransactionStateRestored:
                [[SKPaymentQueue defaultQueue]finishTransaction:tx];
                NSLog(@"SKPaymentTransactionStateRestored");
                break;
            default:
                break;
        }
    }
    
}



-(void)paymentSuccess:(SKPaymentTransaction *)tx{
    
    NSData *receiptData;
    if (NSFoundationVersionNumber >= NSFoundationVersionNumber_iOS_7_0) {
        receiptData = [NSData dataWithContentsOfURL:[[NSBundle mainBundle] appStoreReceiptURL]];
    } else {
        receiptData = tx.transactionReceipt;
    }
    
    NSString *receiptStr = [receiptData base64EncodedStringWithOptions:0];
    NSLog(@"SKPaymentTransactionStatePurchased %@", receiptStr);
    //UnitySendMessage("PaymentManager", "IOSPayment", receiptStr);
    NSString *gameObj = @"PaymentManager";
    NSString *method = @"IOSPayment";
    UnitySendMessage([gameObj UTF8String], [method UTF8String], [receiptStr UTF8String]);

}

-(void)paymentFailed:(SKPaymentTransaction *)tx{
    NSString *gameObj = @"PaymentManager";
    NSString *method = @"IOSPaymentError";
    NSString *error = tx.error.localizedDescription;
    UnitySendMessage([gameObj UTF8String], [method UTF8String], [error UTF8String]);
}



@end

extern void UnitySendMessage(const char* obj, const char* method, const char* msg);

extern "C"
{
    
    static IAPHelper* iapHelper;  
    
    void _BuyProduct(const char *productId)
    {
        if(iapHelper == nil)
        {
            iapHelper = [[IAPHelper alloc] init];
        }
        
        NSString *pid = [NSString stringWithUTF8String:productId];
        pid = @"VIP3";
        if(iapHelper.products == nil)
        {
            iapHelper.productId = pid;
            [iapHelper fetchProducts];
        }
        else
        {
            [iapHelper buy:pid];
        }
    }
}