B4X Requires Chilkat v11.0.0+

PayPal - Find Authorizations

See more PayPal Examples

Finds previously created authorizations. B4X

Dim success As Boolean = False

'  This requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

'  Load our previously obtained access token. (see PayPal OAuth2 Access Token)
Dim jsonToken As ChilkatJsonObject
jsonToken.Initialize
jsonToken.LoadFile("qa_data/tokens/paypal.json")

'  Build the Authorization request header field value.
Dim sbAuth As ChilkatStringBuilder
sbAuth.Initialize
'  token_type should be "Bearer"
sbAuth.Append(jsonToken.StringOf("token_type"))
sbAuth.Append(" ")
sbAuth.Append(jsonToken.StringOf("access_token"))

'  Make the initial connection.
'  A single REST object, once connected, can be used for many PayPal REST API calls.
'  The auto-reconnect indicates that if the already-established HTTPS connection is closed,
'  then it will be automatically re-established as needed.
Dim rest As ChilkatRest
rest.Initialize("rest")
Dim bAutoReconnect As Boolean = True
success = rest.Connect("api.sandbox.paypal.com", 443, True, bAutoReconnect)
If success = False Then
    Log(rest.LastErrorText)
    Return
End If


'  ----------------------------------------------------------------------------------------------
'  The code above this comment could be placed inside a function/subroutine within the application
'  because the connection does not need to be made for every request.  Once the connection is made
'  the app may send many requests..
'  ----------------------------------------------------------------------------------------------

'  Clear the REST object of any headers or query params from previous requests.
rest.ClearAllHeaders
rest.ClearAllQueryParams

rest.AddHeader("Authorization", sbAuth.GetAsString)

'  To find authoriaztions, we list payments and look for those
'  containing "authorization" transactions
rest.AddQueryParam("count", "100")
rest.AddQueryParam("start_index", "0")
rest.AddQueryParam("sort_by", "update_time")
rest.AddQueryParam("sort_order", "asc")

'  Send the GET request and get the JSON response.
Dim sbJsonResponse As ChilkatStringBuilder
sbJsonResponse.Initialize
success = rest.FullRequestNoBodySb("GET", "/v1/payments/payment", sbJsonResponse)
If success = False Then
    Log(rest.LastErrorText)
    Return
End If


Dim json As ChilkatJsonObject
json.Initialize
json.EmitCompact = False
json.LoadSb(sbJsonResponse)

'  (optional) Save the entire JSON response to a file to examine if desired..
Dim sbTemp As ChilkatStringBuilder
sbTemp.Initialize
json.EmitSb(sbTemp)
sbTemp.WriteFile("qa_output/paypal_payments.json", "utf-8", False)

Log("Response Status Code = " & rest.ResponseStatusCode)

'  Did we get a 200 success response?
If rest.ResponseStatusCode <> 200 Then
    Log(json.Emit)
    Log("Failed.")
    Return
End If


'  We are looking for "authorization" transactions .
'  As shown below, we are looking in the "transactions" for "related_resources"
'  containing "authorization" JSON objects. 

'  	{ 
'  	  "payments": [
'  	    { 
'  	      "id": "PAY-3SL8976592063093RLA3DMAY",
'  	      "create_time": "2016-11-24T00:36:19Z",
'  	      "update_time": "2016-11-24T00:36:24Z",
'  	      "state": "approved",
'  	      "intent": "authorize",
'  	      "payer": { 
'  	        "payment_method": "credit_card",
'  	        "funding_instruments": [
'  	          { 
'  	            "credit_card_token": { 
'  	              "credit_card_id": "CARD-52W84623JH8043102LA3CLGA",
'  	              "payer_id": "user12345",
'  	              "last4": "9974",
'  	              "type": "visa",
'  	              "expire_month": "9",
'  	              "expire_year": "2021"
'  	            }
'  	          }
'  	        ]
'  	      },
'  	      "transactions": [
'  	        { 
'  	          "amount": { 
'  	            "total": "6.70",
'  	            "currency": "USD",
'  	            "details": { 
'  	              "subtotal": "6.70"
'  	            }
'  	          },
'  	          "description": "This is the payment transaction description.",
'  	          "related_resources": [
'  	            { 
'  	              "authorization": { 
'  	                "id": "6HG91590AX913463C",
'  	                "create_time": "2016-11-24T00:36:19Z",
'  	                "update_time": "2016-11-24T00:36:24Z",
'  	                "amount": { 
'  	                  ...
'  	                  }
'  	                },
'  	                "state": "authorized",
'  	                "parent_payment": "PAY-3SL8976592063093RLA3DMAY",
'  	                "valid_until": "2016-12-23T00:36:19Z",
'  			...
'  

'  Iterate over the payments and show each authorization
Dim jsonAuth As ChilkatJsonObject
jsonAuth.Initialize
Dim numPayments As Int = json.SizeOfArray("payments")
Dim i As Int = 0
Do While i < numPayments
    json.I = i
    Dim j As Int = 0
    Dim numTransactions As Int = json.SizeOfArray("payments[i].transactions")
    Do While j < numTransactions
        json.J = j
        Dim numRelatedResources As Int = json.SizeOfArray("payments[i].transactions[j].related_resources")
        Dim k As Int = 0
        Do While k < numRelatedResources
            json.K = k
            If json.HasMember("payments[i].transactions[j].related_resources[k].authorization") = True Then

                json.ObjectOf2("payments[i].transactions[j].related_resources[k].authorization", jsonAuth)

                Log("authorization id: " & jsonAuth.StringOf("id"))
                Log("state: " & jsonAuth.StringOf("state"))
                Log("total: " & jsonAuth.StringOf("amount.total"))
                Log("----")
            End If

            k = k + 1
        Loop
        j = j + 1
    Loop
    i = i + 1
Loop

Log("success")