Implemented extracting eInvoice data via API

e-invoice-api/src/main/kotlin/net/codinux/invoicing/api/InvoicingResource.kt

@@ -9,7 +9,7 @@ import org.eclipse.microprofile.openapi.annotations.Operation
 
 @Path("")
 @Consumes(MediaType.APPLICATION_JSON)
-@Produces(MediaType.APPLICATION_JSON)
+@Produces(MediaType.APPLICATION_OCTET_STREAM)
 class InvoicingResource(
     private val service: InvoicingService
 ) {
@@ -30,7 +30,6 @@ class InvoicingResource(
 
     @Path("facturx/pdf")
     @POST
-    @Produces(MediaType.APPLICATION_OCTET_STREAM)
     @Operation(summary = "Create a Factur-X / ZUGFeRD XML, transforms it to PDF and attaches before created XML to it")
     fun createFacturXPdf(invoice: Invoice): Response {
         val pdfFile = service.createFacturXPdf(invoice)
@@ -40,4 +39,14 @@ class InvoicingResource(
             .build()
     }
 
+
+
+    @Path("extract")
+    @POST
+    @Consumes(MediaType.APPLICATION_OCTET_STREAM)
+    @Produces(MediaType.APPLICATION_JSON)
+    @Operation(summary = "Extract invoice data from a Factur-x / ZUGFeRD or XRechnung file")
+    fun extractInvoiceData(invoice: java.nio.file.Path) =
+        service.extractInvoiceData(invoice)
+
 }

e-invoice-api/src/main/kotlin/net/codinux/invoicing/service/InvoicingService.kt

@@ -3,13 +3,18 @@ package net.codinux.invoicing.service
 import jakarta.inject.Singleton
 import net.codinux.invoicing.creation.EInvoiceCreator
 import net.codinux.invoicing.model.Invoice
+import net.codinux.invoicing.reader.EInvoiceReader
 import java.io.File
+import java.nio.file.Path
+import kotlin.io.path.extension
 
 @Singleton
 class InvoicingService {
 
     private val creator = EInvoiceCreator()
 
+    private val reader = EInvoiceReader()
+
 
     fun createXRechnung(invoice: Invoice): String =
         creator.createXRechnungXml(invoice)
@@ -27,4 +32,11 @@ class InvoicingService {
         return resultFile
     }
 
+
+    fun extractInvoiceData(invoiceFile: Path) = when (invoiceFile.extension.lowercase()) {
+        "xml" -> reader.readFromXml(invoiceFile.toFile())
+        "pdf" -> reader.extractFromPdf(invoiceFile.toFile())
+        else -> throw IllegalArgumentException("We can only extract eInvoice data from .xml and .pdf files")
+    }
+
 }

e-invoice-api/src/main/resources/application.properties

@@ -6,6 +6,8 @@
 
 quarkus.http.enable-compression=true
 
+quarkus.http.body.delete-uploaded-files-on-end=true
+
 %dev.quarkus.http.cors=true
 quarkus.http.cors.origins=*
 quarkus.http.cors.headers=accept, authorization, content-type, x-requested-with