(Tcl) 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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load ./chilkat.dll

# Batch 1 File
set a1 "{\"payload\": {\"Orders\": [{\"AmazonOrderId\": \"1\",\"OrderStatus\": \"Unshipped\"},{\"AmazonOrderId\": \"2\",\"OrderStatus\": \"Unshipped\"}]}"

# Batch 2 File
set 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"}]}

set success 1
set json1 [new_CkJsonObject]

CkJsonObject_Load $json1 $a1

set json2 [new_CkJsonObject]

CkJsonObject_Load $json2 $a2

# We're going to add the order records from json2 to json1.
# jarr1 is a CkJsonArray
set jarr1 [CkJsonObject_ArrayOf $json1 "payload.Orders"]
# jarr2 is a CkJsonArray
set jarr2 [CkJsonObject_ArrayOf $json2 "payload.Orders"]

set i 0
set numOrders [CkJsonArray_get_Size $jarr2]
while {$i < $numOrders} {
    # jOrder is a CkJsonObject
    set jOrder [CkJsonArray_ObjectAt $jarr2 $i]
    # Assuming non-null return...
    CkJsonArray_AddObjectCopyAt $jarr1 -1 $jOrder
    set i [expr $i + 1]
}

# Show the merged JSON.
CkJsonObject_put_EmitCompact $json1 0
puts [CkJsonObject_emit $json1]

# Result:

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

delete_CkJsonObject $json1
delete_CkJsonObject $json2