Chilkat Examples

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DataFlex Web API Examples

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(DataFlex) PayPal - Create Stored Credit Card Payment

Creates a credit card payment using a card ID from a previously stored credit card (where the credit card was stored in PayPal's vault).

Note: For sandbox calls, you can use the credit card numbers provided in your sandbox test accounts.

Note: This example requires Chilkat v9.5.0.65 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
Token    Handle hoJsonToken
    Handle hoSbAuth
    Handle hoRest
    Boolean iBAutoReconnect
    Boolean iSuccess
    Handle hoJson
    Variant vSbJsonRequest
    Handle hoSbJsonRequest
    Variant vSbJsonResponse
    Handle hoSbJsonResponse
    String sTemp1
    Integer iTemp1

    // Note: Requires Chilkat v9.5.0.65 or greater.

    // 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)
    Get Create (RefClass(cComChilkatJsonObject)) To hoJsonToken
    If (Not(IsComObjectCreated(hoJsonToken))) Begin
        Send CreateComObject of hoJsonToken
    End
    Get ComLoadFile Of hoJsonToken "qa_data/tokens/paypal.json" To iSuccess

    // Build the Authorization request header field value.
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbAuth
    If (Not(IsComObjectCreated(hoSbAuth))) Begin
        Send CreateComObject of hoSbAuth
    End
    // token_type should be "Bearer"
    Get ComStringOf Of hoJsonToken "token_type" To sTemp1
    Get ComAppend Of hoSbAuth sTemp1 To iSuccess
    Get ComAppend Of hoSbAuth " " To iSuccess
    Get ComStringOf Of hoJsonToken "access_token" To sTemp1
    Get ComAppend Of hoSbAuth sTemp1 To iSuccess

    // 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.
    Get Create (RefClass(cComChilkatRest)) To hoRest
    If (Not(IsComObjectCreated(hoRest))) Begin
        Send CreateComObject of hoRest
    End
    Move True To iBAutoReconnect
    Get ComConnect Of hoRest "api.sandbox.paypal.com" 443 True iBAutoReconnect To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // ----------------------------------------------------------------------------------------------
    // 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..
    // ----------------------------------------------------------------------------------------------

    // We previously stored the user's credit card data in PayPal's vault.
    // See Store Card in PayPal Vault for sample code.

    // Build the JSON containing the stored credit card information and transaction information.
    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Set ComEmitCompact Of hoJson To False
    Get ComUpdateString Of hoJson "intent" "sale" To iSuccess
    Get ComUpdateString Of hoJson "payer.payment_method" "credit_card" To iSuccess
    Get ComUpdateString Of hoJson "payer.funding_instruments[0].credit_card_token.credit_card_id" "CARD-52W84623JH8043102LA3CLGA" To iSuccess
    Get ComUpdateString Of hoJson "payer.funding_instruments[0].credit_card_token.payer_id" "user12345" To iSuccess
    Get ComUpdateString Of hoJson "transactions[0].amount.total" "6.70" To iSuccess
    Get ComUpdateString Of hoJson "transactions[0].amount.currency" "USD" To iSuccess
    Get ComUpdateString Of hoJson "transactions[0].description" "This is the payment transaction description." To iSuccess

    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1

    // The JSON created by the above code is this:

    // 	{ 
    // 	  "intent": "sale",
    // 	  "payer": { 
    // 	    "payment_method": "credit_card",
    // 	    "funding_instruments": [
    // 	      { 
    // 	        "credit_card_token": { 
    // 	          "credit_card_id": "CARD-52W84623JH8043102LA3CLGA",
    // 	          "payer_id": "user12345"
    // 	        }
    // 	      }
    // 	    ]
    // 	  },
    // 	  "transactions": [
    // 	    { 
    // 	      "amount": { 
    // 	        "total": "6.70",
    // 	        "currency": "USD"
    // 	      },
    // 	      "description": "This is the payment transaction description."
    // 	    }
    // 	  ]
    // 	}

    Get ComGetAsString Of hoSbAuth To sTemp1
    Get ComAddHeader Of hoRest "Authorization" sTemp1 To iSuccess
    Get ComAddHeader Of hoRest "Content-Type" "application/json" To iSuccess

    // Send the POST request containign the JSON in the request body, and get the JSON response.
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbJsonRequest
    If (Not(IsComObjectCreated(hoSbJsonRequest))) Begin
        Send CreateComObject of hoSbJsonRequest
    End
    Set ComEmitCompact Of hoJson To True
    Get pvComObject of hoSbJsonRequest to vSbJsonRequest
    Get ComEmitSb Of hoJson vSbJsonRequest To iSuccess
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbJsonResponse
    If (Not(IsComObjectCreated(hoSbJsonResponse))) Begin
        Send CreateComObject of hoSbJsonResponse
    End
    Get pvComObject of hoSbJsonRequest to vSbJsonRequest
    Get pvComObject of hoSbJsonResponse to vSbJsonResponse
    Get ComFullRequestSb Of hoRest "POST" "/v1/payments/payment" vSbJsonRequest vSbJsonResponse To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Set ComEmitCompact Of hoJson To False
    Get pvComObject of hoSbJsonResponse to vSbJsonResponse
    Get ComLoadSb Of hoJson vSbJsonResponse To iSuccess

    Get ComResponseStatusCode Of hoRest To iTemp1
    Showln "Response Status Code = " iTemp1

    // Did we get a 201 success response?
    Get ComResponseStatusCode Of hoRest To iTemp1
    If (iTemp1 <> 201) Begin
        Get ComEmit Of hoJson To sTemp1
        Showln sTemp1
        Showln "Failed."
        Procedure_Return
    End

    // Sample JSON response is shown below.
    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1

    // Demonstrate how to access a few parts of the JSON response..
    Get ComStringOf Of hoJson "payer.funding_instruments[0].credit_card_token.credit_card_id" To sTemp1
    Showln "credit_card_id: " sTemp1
    Get ComStringOf Of hoJson "transactions[0].amount.details.subtotal" To sTemp1
    Showln "subtotal: " sTemp1
    Get ComStringOf Of hoJson "transactions[0].related_resources[0].sale.links[1].href" To sTemp1
    Showln "refund href: " sTemp1
    Showln "success"

    // ------------------------------------------------
    // A sample JSON response:

    // 	{ 
    // 	  "id": "PAY-12T35751GS725073SLA3CQNQ",
    // 	  "create_time": "2016-11-23T23:37:26Z",
    // 	  "update_time": "2016-11-23T23:37:31Z",
    // 	  "state": "approved",
    // 	  "intent": "sale",
    // 	  "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": [
    // 	        { 
    // 	          "sale": { 
    // 	            "id": "4F194018A1618453G",
    // 	            "create_time": "2016-11-23T23:37:26Z",
    // 	            "update_time": "2016-11-23T23:37:31Z",
    // 	            "amount": { 
    // 	              "total": "6.70",
    // 	              "currency": "USD"
    // 	            },
    // 	            "state": "completed",
    // 	            "parent_payment": "PAY-12T35751GS725073SLA3CQNQ",
    // 	            "links": [
    // 	              { 
    // 	                "href": "https://api.sandbox.paypal.com/v1/payments/sale/4F194018A1618453G",
    // 	                "rel": "self",
    // 	                "method": "GET"
    // 	              },
    // 	              { 
    // 	                "href": "https://api.sandbox.paypal.com/v1/payments/sale/4F194018A1618453G/refund",
    // 	                "rel": "refund",
    // 	                "method": "POST"
    // 	              },
    // 	              { 
    // 	                "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-12T35751GS725073SLA3CQNQ",
    // 	                "rel": "parent_payment",
    // 	                "method": "GET"
    // 	              }
    // 	            ],
    // 	            "fmf_details": {},
    // 	            "processor_response": { 
    // 	              "avs_code": "X",
    // 	              "cvv_code": "M"
    // 	            }
    // 	          }
    // 	        }
    // 	      ]
    // 	    }
    // 	  ],
    // 	  "links": [
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-12T35751GS725073SLA3CQNQ",
    // 	      "rel": "self",
    // 	      "method": "GET"
    // 	    }
    // 	  ]
    // 	}
    // 


End_Procedure

 

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