Zig

Create SOAP with multiple VeriFactu Digitally Signed Registration Records

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Creates a SOAP message containing a multiple digitally signed invoice registration records, formatted according to the specifications for Spain's Veri*Factu system. Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    var success: bool = false;

    success = true;

    // Begin with the following SOAP XML:

    // <?xml version="1.0" encoding="utf-8"?>
    // <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:sum="https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroLR.xsd" xmlns:sum1="https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroInformacion.xsd" xmlns:xd="http://www.w3.org/2000/09/xmldsig#">
    //     <soapenv:Header/>
    //     <soapenv:Body>
    //         <sum:RegFactuSistemaFacturacion>
    //             <sum:Cabecera>
    //                 <sum1:ObligadoEmision>
    //                     <sum1:NombreRazon>XYZ STORE SL</sum1:NombreRazon>
    //                     <sum1:NIF>B99999999</sum1:NIF>
    //                 </sum1:ObligadoEmision>
    //                 <sum1:RemisionRequerimiento>
    //                     <sum1:RefRequerimiento>3333333333</sum1:RefRequerimiento>
    //                     <sum1:FinRequerimiento>S</sum1:FinRequerimiento>
    //                 </sum1:RemisionRequerimiento>
    //             </sum:Cabecera>
    //
    //         </sum:RegFactuSistemaFacturacion>
    //     </soapenv:Body>
    // </soapenv:Envelope>

    const xml = try chilkat.Xml.init();
    defer xml.deinit();
    xml.setTag("soapenv:Envelope");
    xml.addAttribute("xmlns:soapenv", "http://schemas.xmlsoap.org/soap/envelope/") catch {};
    xml.addAttribute("xmlns:sum", "https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroLR.xsd") catch {};
    xml.addAttribute("xmlns:sum1", "https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroInformacion.xsd") catch {};
    xml.addAttribute("xmlns:xd", "http://www.w3.org/2000/09/xmldsig#") catch {};
    xml.updateChildContent("soapenv:Header", "");
    xml.updateChildContent("soapenv:Body|sum:RegFactuSistemaFacturacion|sum:Cabecera|sum1:ObligadoEmision|sum1:NombreRazon", "XYZ STORE SL");
    xml.updateChildContent("soapenv:Body|sum:RegFactuSistemaFacturacion|sum:Cabecera|sum1:ObligadoEmision|sum1:NIF", "B99999999");
    xml.updateChildContent("soapenv:Body|sum:RegFactuSistemaFacturacion|sum:Cabecera|sum1:RemisionRequerimiento|sum1:RefRequerimiento", "3333333333");
    xml.updateChildContent("soapenv:Body|sum:RegFactuSistemaFacturacion|sum:Cabecera|sum1:RemisionRequerimiento|sum1:FinRequerimiento", "S");

    // Prior to this code, we created N signed SOAP messages, each containing a single signed record.
    // Load each of these signed SOAP messages into a StringBuilder and insert after the "</sum:Cabecera>"
    // Note: We must NOT use Chilkat.Xml for this.  We must do string operations using Chilkat StringBuilder to prevent whitespace or formatting modifications which would break the signatures.

    const sb_xml = try chilkat.StringBuilder.init();
    defer sb_xml.deinit();
    xml.getXmlSb(sb_xml) catch {};

    // ---------------------------------------------------------------------------------------------
    // Load the previously signed XML containing just one signed record.
    const sb_signed_soap = try chilkat.StringBuilder.init();
    defer sb_signed_soap.deinit();
    sb_signed_soap.loadFile("c:/temp/qa_output/signedSoapXml1.xml", "utf-8") catch {
        std.debug.print("{s}\n", .{try sb_signed_soap.getLastErrorText(alloc)});
        return;
    };

    // Remove everything before "</sum:Cabecera>", including the "</sum:Cabecera>"
    sb_signed_soap.removeBefore("</sum:Cabecera>") catch {};

    // Remove everything after the "</sum:RegFactuSistemaFacturacion>", including the "</sum:RegFactuSistemaFacturacion>"
    sb_signed_soap.removeAfterFinal("</sum:RegFactuSistemaFacturacion>") catch {};

    // We now have the portion of the signed SOAP xml from <sum:RegistroFactura> to </sum:RegistroFactura>
    // Insert it after the </sum:Cabecera>
    sb_signed_soap.prepend("</sum:Cabecera>") catch {};
    sb_xml.replaceFirst("</sum:Cabecera>", try sb_signed_soap.getAsString(alloc)) catch {};

    // ---------------------------------------------------------------------------------------------
    // Add the next signed SOAP containing a single signed record.
    sb_signed_soap.loadFile("c:/temp/qa_output/signedSoapXml2.xml", "utf-8") catch {
        std.debug.print("{s}\n", .{try sb_signed_soap.getLastErrorText(alloc)});
        return;
    };

    // Remove everything before "</sum:Cabecera>", including the "</sum:Cabecera>"
    sb_signed_soap.removeBefore("</sum:Cabecera>") catch {};

    // Remove everything after the "</sum:RegFactuSistemaFacturacion>", including the "</sum:RegFactuSistemaFacturacion>"
    sb_signed_soap.removeAfterFinal("</sum:RegFactuSistemaFacturacion>") catch {};

    // We now have the portion of the signed SOAP xml from <sum:RegistroFactura> to </sum:RegistroFactura>
    // Insert it after the </sum:Cabecera>
    sb_signed_soap.prepend("</sum:Cabecera>") catch {};
    sb_xml.replaceFirst("</sum:Cabecera>", try sb_signed_soap.getAsString(alloc)) catch {};

    // ---------------------------------------------------------------------------------------------
    // Continue adding more signed records if needed.

    // Save the SOAP containing multiple signed records..
    sb_xml.writeFile("c:/temp/qa_output/soap_combined.xml", "utf-8", false) catch {};
}