(DataFlex) Send ZATCA Invoice for Clearance

See more ZATCA Examples

Demonstrates how to send a ZATCA invoice for clearance, which is to send the HTTP POST with invoice hash and the signed invoice in base64 format.

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

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    String sSignedXmlFilePath
    Handle hoSignedXml
    Boolean iSuccess
    String sInvoiceHash
    String sCbc_UUID
    Handle hoBd
    String sBase64Invoice
    Variant vJson
    Handle hoJson
    Handle hoHttp
    Variant vResp
    Handle hoResp
    Integer iStatusCode
    Variant vJsonResp
    Handle hoJsonResp
    String sTemp1
    Boolean bTemp1

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

    // This example will send a POST with HTTP Basic Authentication to 
    // https://gw-fatoora.zatca.sa/e-invoicing/simulation/invoices/clearance/single

    // NOTE: At the time of this writing, I don't know for sure if the above URL is correct.
    // 
    // The body of the POST will contain JSON formatted as such:

    // {
    //   "summary": "Standard Invoice",
    //   "value": {
    //     "invoiceHash": "PEx8bNFcEMEpHzUVvQntQI6ot8eFqTT/l59b+H1HqX4=",
    //     "uuid": "16e78469-64af-406d-9cfd-895e724198f0",
    //     "invoice": "PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPEl....."
    //   }
    // }

    // The above JSON is created from the signed XML invoice, such as the following:

    // *** Look at the above base64 data for the invoiceHash and uuid.  These values are found in the invoice as shown below.
    // *** We'll write code to load the signed invoice into a Chilkat XML object, grab the invoice hash and the uuid,
    // *** and then construct the above JSON, which will then be sent in a POST.  (See below...)

    // <?xml version="1.0" encoding="UTF-8"?>
    // <Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2" xmlns:ext="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2"><ext:UBLExtensions>
    //     <ext:UBLExtension>
    //         <ext:ExtensionURI>urn:oasis:names:specification:ubl:dsig:enveloped:xades</ext:ExtensionURI>
    //         <ext:ExtensionContent>
    //             <!-- Please note that the signature values are sample values only -->
    //             <sig:UBLDocumentSignatures xmlns:sig="urn:oasis:names:specification:ubl:schema:xsd:CommonSignatureComponents-2" xmlns:sac="urn:oasis:names:specification:ubl:schema:xsd:SignatureAggregateComponents-2" xmlns:sbc="urn:oasis:names:specification:ubl:schema:xsd:SignatureBasicComponents-2">
    //                 <sac:SignatureInformation>
    //                     <cbc:ID>urn:oasis:names:specification:ubl:signature:1</cbc:ID>
    //                     <sbc:ReferencedSignatureID>urn:oasis:names:specification:ubl:signature:Invoice</sbc:ReferencedSignatureID>
    //                     <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#" Id="signature">
    //                         <ds:SignedInfo>
    //                             <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2006/12/xml-c14n11"/>
    //                             <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#ecdsa-sha256"/>
    //                             <ds:Reference Id="invoiceSignedData" URI="">
    //                                 <ds:Transforms>
    //                                     <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
    //                                         <ds:XPath>not(//ancestor-or-self::ext:UBLExtensions)</ds:XPath>
    //                                     </ds:Transform>
    //                                     <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
    //                                         <ds:XPath>not(//ancestor-or-self::cac:Signature)</ds:XPath>
    //                                     </ds:Transform>
    //                                     <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
    //                                         <ds:XPath>not(//ancestor-or-self::cac:AdditionalDocumentReference[cbc:ID='QR'])</ds:XPath>
    //                                     </ds:Transform>
    //                                     <ds:Transform Algorithm="http://www.w3.org/2006/12/xml-c14n11"/>
    //                                 </ds:Transforms>
    //                                 <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
    //                                 <ds:DigestValue>PEx8bNFcEMEpHzUVvQntQI6ot8eFqTT/l59b+H1HqX4=</ds:DigestValue>
    //                             </ds:Reference>
    //                             <ds:Reference Type="http://www.w3.org/2000/09/xmldsig#SignatureProperties" URI="#xadesSignedProperties">
    //                                 <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
    //                                 <ds:DigestValue>ZDEyMDUyODJjYzk4MGViNTJhNmYzMGIyZTgxODhkY2JlOWEzNmRiMTFlZTVhMDAxNjk5OTRkYTg3ODhlY2ZiMw==</ds:DigestValue>
    //                             </ds:Reference>
    //                         </ds:SignedInfo>
    // ...
    // ...
    // ...
    //         </ext:ExtensionContent>
    //     </ext:UBLExtension>
    // </ext:UBLExtensions>
    //     
    //     <cbc:ProfileID>reporting:1.0</cbc:ProfileID>
    //     <cbc:ID>SME00062</cbc:ID>
    //     <cbc:UUID>16e78469-64af-406d-9cfd-895e724198f0</cbc:UUID>
    //     <cbc:IssueDate>2022-03-13</cbc:IssueDate>
    //     <cbc:IssueTime>14:40:40</cbc:IssueTime>
    //     <cbc:InvoiceTypeCode name="0111010">388</cbc:InvoiceTypeCode>
    // ...
    // ...
    // ...
    //     </cac:InvoiceLine>
    // </Invoice>

    // -------------------------------------------------------------------
    // First, let's load our signed XML into a Chilkat XML object so we can get the uuid and invoice hash.
    Move "qa_data/zatca/http_post_clearance/sample_signed_invoice.xml" To sSignedXmlFilePath

    Get Create (RefClass(cComChilkatXml)) To hoSignedXml
    If (Not(IsComObjectCreated(hoSignedXml))) Begin
        Send CreateComObject of hoSignedXml
    End
    Get ComLoadXmlFile Of hoSignedXml sSignedXmlFilePath To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoSignedXml To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComGetChildContent Of hoSignedXml "ext:UBLExtensions|ext:UBLExtension|ext:ExtensionContent|sig:UBLDocumentSignatures|sac:SignatureInformation|ds:Signature|ds:SignedInfo|ds:Reference[0]|ds:DigestValue" To sInvoiceHash
    Showln "invoiceHash: " sInvoiceHash

    Get ComGetChildContent Of hoSignedXml "cbc:UUID" To sCbc_UUID
    Showln "UUID: " sCbc_UUID

    // The Chilkat XML object was used purely for getting the above 2 values.
    // We must send the EXACT signed XML in base64 format.  Therefore, we should load the signed XML into a Chilkat BinData and get it in base64 single-line format.

    Get Create (RefClass(cComChilkatBinData)) To hoBd
    If (Not(IsComObjectCreated(hoBd))) Begin
        Send CreateComObject of hoBd
    End
    Get ComLoadFile Of hoBd sSignedXmlFilePath To iSuccess
    Get ComGetEncoded Of hoBd "base64" To sBase64Invoice

    // OK, let's build the JSON that will be in the HTTP POST body.
    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get ComUpdateString Of hoJson "summary" "Standard Invoice" To iSuccess
    Get ComUpdateString Of hoJson "value.invoiceHash" sInvoiceHash To iSuccess
    Get ComUpdateString Of hoJson "value.uuid" sCbc_UUID To iSuccess
    Get ComUpdateString Of hoJson "value.invoice" sBase64Invoice To iSuccess

    // Now create the HTTP object and send the POST.
    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End

    // We'll want HTTP basic authentication.
    Set ComBasicAuth Of hoHttp To True
    Set ComLogin Of hoHttp To "your login"
    Set ComPassword Of hoHttp To "your password"

    Get pvComObject of hoJson to vJson
    Get ComPostJson3 Of hoHttp "https://gw-fatoora.zatca.sa/e-invoicing/simulation/invoices/clearance/single" "application/json" vJson To vResp
    If (IsComObject(vResp)) Begin
        Get Create (RefClass(cComChilkatHttpResponse)) To hoResp
        Set pvComObject Of hoResp To vResp
    End
    Get ComLastMethodSuccess Of hoHttp To bTemp1
    If (bTemp1 = False) Begin
        Get ComLastErrorText Of hoHttp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Check the response status code.  A 200 or 202 indicates success..
    Get ComStatusCode Of hoResp To iStatusCode
    Showln "Response status code = " iStatusCode

    // Examine the response, which is JSON.
    Get Create (RefClass(cComChilkatJsonObject)) To hoJsonResp
    If (Not(IsComObjectCreated(hoJsonResp))) Begin
        Send CreateComObject of hoJsonResp
    End
    Get pvComObject of hoJsonResp to vJsonResp
    Get ComGetBodyJson Of hoResp vJsonResp To iSuccess
    Set ComEmitCompact Of hoJsonResp To False
    Showln "JSON Response:"
    Get ComEmit Of hoJsonResp To sTemp1
    Showln sTemp1

    // Use this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON


End_Procedure