(Objective-C) Merge SP-API JSON Order Arrays

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Demonstrates how to merge JSON arrays for the case of Amazon SP-API orders.

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#import <NSString.h>
#import <CkoJsonObject.h>
#import <CkoJsonArray.h>

// Batch 1 File
NSString *a1 = @"{\"payload\": {\"Orders\": [{\"AmazonOrderId\": \"1\",\"OrderStatus\": \"Unshipped\"},{\"AmazonOrderId\": \"2\",\"OrderStatus\": \"Unshipped\"}]}";

// Batch 2 File
NSString *a2 = @"{\"payload\": {\"Orders\": [{\"AmazonOrderId\": \"3\",\"OrderStatus\": \"Unshipped\"},{\"AmazonOrderId\": \"4\",\"OrderStatus\": \"Unshipped\"}]}";

// Required Merged File
// {"payload": {"Orders": [{"AmazonOrderId": "1","OrderStatus": "Unshipped"},{"AmazonOrderId": "2","OrderStatus": "Unshipped"},{"AmazonOrderId": "3","OrderStatus": "Unshipped"},{"AmazonOrderId": "4","OrderStatus": "Unshipped"}]}

BOOL success = YES;
CkoJsonObject *json1 = [[CkoJsonObject alloc] init];
[json1 Load: a1];

CkoJsonObject *json2 = [[CkoJsonObject alloc] init];
[json2 Load: a2];

// We're going to add the order records from json2 to json1.
CkoJsonArray *jarr1 = [json1 ArrayOf: @"payload.Orders"];
CkoJsonArray *jarr2 = [json2 ArrayOf: @"payload.Orders"];

int i = 0;
int numOrders = [jarr2.Size intValue];
while ((i < numOrders)) {
    CkoJsonObject *jOrder = [jarr2 ObjectAt: [NSNumber numberWithInt: i]];
    // Assuming non-null return...
    [jarr1 AddObjectCopyAt: [NSNumber numberWithInt: -1] jsonObj: jOrder];
    i = i + 1;
}

// Show the merged JSON.
json1.EmitCompact = NO;
NSLog(@"%@",[json1 Emit]);

// Result:

// {
//   "payload": {
//     "Orders": [
//       {
//         "AmazonOrderId": "1",
//         "OrderStatus": "Unshipped"
//       },
//       {
//         "AmazonOrderId": "2",
//         "OrderStatus": "Unshipped"
//       },
//       {
//         "AmazonOrderId": "3",
//         "OrderStatus": "Unshipped"
//       },
//       {
//         "AmazonOrderId": "4",
//         "OrderStatus": "Unshipped"
//       }
//     ]
//   }
// }