(DataFlex) PayPal - Update Invoice

Update a PayPal invoice.

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

See also PayPal Update Invoice REST API Reference

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoJsonToken
    Boolean iSuccess
    Handle hoSbAuth
    Handle hoRest
    Boolean iBAutoReconnect
    Boolean iSuccess
    Handle hoJson
    String sInvoiceId
    Handle hoSbPath
    Variant vSbJsonRequest
    Handle hoSbJsonRequest
    Variant vSbJsonResponse
    Handle hoSbJsonResponse
    Integer iNumItems
    Integer i
    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..
    // ----------------------------------------------------------------------------------------------

    // First create the JSON with updated 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 "merchant_info.email" "smith-facilitator@chilkatsoft.com" To iSuccess
    Get ComUpdateString Of hoJson "merchant_info.first_name" "Joe" To iSuccess
    Get ComUpdateString Of hoJson "merchant_info.last_name" "Facilitator" To iSuccess
    Get ComUpdateString Of hoJson "merchant_info.business_name" "Medical Professionals, LLC" To iSuccess
    Get ComUpdateString Of hoJson "merchant_info.phone.country_code" "001" To iSuccess
    Get ComUpdateString Of hoJson "merchant_info.phone.national_number" "5032141716" To iSuccess
    Get ComUpdateString Of hoJson "merchant_info.address.line1" "1234 Main St." To iSuccess
    Get ComUpdateString Of hoJson "merchant_info.address.city" "Portland" To iSuccess
    Get ComUpdateString Of hoJson "merchant_info.address.state" "OR" To iSuccess
    Get ComUpdateString Of hoJson "merchant_info.address.postal_code" "97217" To iSuccess
    Get ComUpdateString Of hoJson "merchant_info.address.country_code" "US" To iSuccess
    Get ComUpdateString Of hoJson "billing_info[0].email" "smith-buyer@chilkatsoft.com" To iSuccess
    Get ComUpdateString Of hoJson "shipping_info.first_name" "Sally" To iSuccess
    Get ComUpdateString Of hoJson "shipping_info.last_name" "Patient" To iSuccess
    Get ComUpdateString Of hoJson "shipping_info.business_name" "Not applicable" To iSuccess
    Get ComUpdateString Of hoJson "shipping_info.phone.country_code" "001" To iSuccess
    Get ComUpdateString Of hoJson "shipping_info.phone.national_number" "5039871234" To iSuccess
    Get ComUpdateString Of hoJson "shipping_info.address.line1" "1234 Broad St." To iSuccess
    Get ComUpdateString Of hoJson "shipping_info.address.city" "Portland" To iSuccess
    Get ComUpdateString Of hoJson "shipping_info.address.state" "OR" To iSuccess
    Get ComUpdateString Of hoJson "shipping_info.address.postal_code" "97216" To iSuccess
    Get ComUpdateString Of hoJson "shipping_info.address.country_code" "US" To iSuccess
    Get ComUpdateString Of hoJson "items[0].name" "Sutures" To iSuccess
    // We are updating the quantity from 100.0 to 200.0
    // Note: The UpdateNumber method is added in v9.5.0.65
    Get ComUpdateNumber Of hoJson "items[0].quantity" "200.0" To iSuccess
    Get ComUpdateString Of hoJson "items[0].unit_price.currency" "USD" To iSuccess
    Get ComUpdateString Of hoJson "items[0].unit_price.value" "5.00" To iSuccess
    Get ComUpdateString Of hoJson "payment_term.term_type" "NET_45" To iSuccess
    Get ComUpdateString Of hoJson "payment_term.due_date" "2016-12-30 PST" To iSuccess
    Get ComUpdateString Of hoJson "note" "Medical Invoice 16 Jul, 2013 PST" To iSuccess

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

    // 	{ 
    // 	  "merchant_info": { 
    // 	    "email": "smith-facilitator@chilkatsoft.com",
    // 	    "first_name": "Joe",
    // 	    "last_name": "Facilitator",
    // 	    "business_name": "Medical Professionals, LLC",
    // 	    "phone": { 
    // 	      "country_code": "001",
    // 	      "national_number": "5032141716"
    // 	    },
    // 	    "address": { 
    // 	      "line1": "1234 Main St.",
    // 	      "city": "Portland",
    // 	      "state": "OR",
    // 	      "postal_code": "97217",
    // 	      "country_code": "US"
    // 	    }
    // 	  },
    // 	  "billing_info": [
    // 	    { 
    // 	      "email": "smith-buyer@chilkatsoft.com"
    // 	    }
    // 	  ],
    // 	  "shipping_info": { 
    // 	    "first_name": "Sally",
    // 	    "last_name": "Patient",
    // 	    "business_name": "Not applicable",
    // 	    "phone": { 
    // 	      "country_code": "001",
    // 	      "national_number": "5039871234"
    // 	    },
    // 	    "address": { 
    // 	      "line1": "1234 Broad St.",
    // 	      "city": "Portland",
    // 	      "state": "OR",
    // 	      "postal_code": "97216",
    // 	      "country_code": "US"
    // 	    }
    // 	  },
    // 	  "items": [
    // 	    { 
    // 	      "name": "Sutures",
    // 	      "quantity": 200.0,
    // 	      "unit_price": { 
    // 	        "currency": "USD",
    // 	        "value": "5.00"
    // 	      }
    // 	    }
    // 	  ],
    // 	  "payment_term": { 
    // 	    "term_type": "NET_45",
    // 	    "due_date": "2016-12-30 PST"
    // 	  },
    // 	  "note": "Medical Invoice 16 Jul, 2013 PST"
    // 	}

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

    Move "INV2-XV4B-736P-PLVN-SZCE" To sInvoiceId

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbPath
    If (Not(IsComObjectCreated(hoSbPath))) Begin
        Send CreateComObject of hoSbPath
    End
    Get ComAppend Of hoSbPath "/v1/invoicing/invoices/" To iSuccess
    Get ComAppend Of hoSbPath sInvoiceId To iSuccess

    // Send the PUT 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
    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 ComGetAsString Of hoSbPath To sTemp1
    Get pvComObject of hoSbJsonRequest to vSbJsonRequest
    Get pvComObject of hoSbJsonResponse to vSbJsonResponse
    Get ComFullRequestSb Of hoRest "PUT" sTemp1 vSbJsonRequest vSbJsonResponse To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    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 200 success response?
    Get ComResponseStatusCode Of hoRest To iTemp1
    If (iTemp1 <> 200) Begin
        Get ComEmit Of hoJson To sTemp1
        Showln sTemp1
        Showln "Failed."
        Procedure_Return
    End

    // Sample response JSON is shown below.

    // Get some information..
    Get ComStringOf Of hoJson "merchant_info.email" To sTemp1
    Showln "email: " sTemp1
    Get ComStringOf Of hoJson "merchant_info.business_name" To sTemp1
    Showln "business_name: " sTemp1

    Get ComSizeOfArray Of hoJson "items" To iNumItems
    Move 0 To i
    While (i < iNumItems)
        Set ComI Of hoJson To i
        Get ComStringOf Of hoJson "items[i].name" To sTemp1
        Showln "item name: " sTemp1
        Get ComStringOf Of hoJson "items[i].quantity" To sTemp1
        Showln "item quantity: " sTemp1
        Get ComStringOf Of hoJson "items[i].unit_price.currency" To sTemp1
        Showln "item currency: " sTemp1
        Get ComStringOf Of hoJson "items[i].unit_price.value" To sTemp1
        Showln "item value: " sTemp1
        Showln "----"
        Move (i + 1) To i
    Loop

    Showln "Success."


End_Procedure