Implemented InvoicingResource to create eInvoices via REST API

build.gradle.kts

@@ -1,3 +1,15 @@
+buildscript {
+    val kotlinVersion: String by extra
+
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        // don't know why but otherwise Quarkus is not able to index the classes of e-invoice-domain
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
+    }
+}
+
 
 allprojects {
     group = "net.codinux.invoicing"

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

@@ -0,0 +1,43 @@
+package net.codinux.invoicing.api
+
+import jakarta.ws.rs.*
+import jakarta.ws.rs.core.MediaType
+import jakarta.ws.rs.core.Response
+import net.codinux.invoicing.model.Invoice
+import net.codinux.invoicing.service.InvoicingService
+import org.eclipse.microprofile.openapi.annotations.Operation
+
+@Path("")
+@Consumes(MediaType.APPLICATION_JSON)
+@Produces(MediaType.APPLICATION_JSON)
+class InvoicingResource(
+    private val service: InvoicingService
+) {
+
+    @Path("xrechnung")
+    @POST
+    @Produces(MediaType.APPLICATION_XML)
+    @Operation(summary = "Create a XRechnung XML")
+    fun createXRechnung(invoice: Invoice) =
+        service.createXRechnung(invoice)
+
+    @Path("facturx/xml")
+    @POST
+    @Produces(MediaType.APPLICATION_XML)
+    @Operation(summary = "Create a Factur-X / ZUGFeRD XML (ZUGFeRD is a synonym for Factur-X)")
+    fun createFacturXXml(invoice: Invoice) =
+        service.createFacturXXml(invoice)
+
+    @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)
+
+        return Response.ok(pdfFile)
+            .header("Content-Disposition", "attachment;filename=\"Invoice.pdf\"")
+            .build()
+    }
+
+}

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

@@ -0,0 +1,30 @@
+package net.codinux.invoicing.service
+
+import jakarta.inject.Singleton
+import net.codinux.invoicing.creation.EInvoiceCreator
+import net.codinux.invoicing.model.Invoice
+import java.io.File
+
+@Singleton
+class InvoicingService {
+
+    private val creator = EInvoiceCreator()
+
+
+    fun createXRechnung(invoice: Invoice): String =
+        creator.createXRechnungXml(invoice)
+
+    fun createFacturXXml(invoice: Invoice): String =
+        creator.createZugferdXml(invoice)
+
+    fun createFacturXPdf(invoice: Invoice): File {
+        val resultFile = File.createTempFile("factur-x", ".pdf").also {
+            it.deleteOnExit()
+        }
+
+        creator.createZugferdPdf(invoice, resultFile)
+
+        return resultFile
+    }
+
+}

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

@@ -6,10 +6,10 @@
 
 quarkus.http.enable-compression=true
 
-quarkus.http.cors=true
+%dev.quarkus.http.cors=true
 quarkus.http.cors.origins=*
 quarkus.http.cors.headers=accept, authorization, content-type, x-requested-with
-quarkus.http.cors.methods=GET, OPTIONS
+quarkus.http.cors.methods=GET, POST, PUT, DELETE, OPTIONS
 
 
 # log request response times
@@ -40,6 +40,9 @@ quarkus.log.loki.field.kubernetes.include=true
 quarkus.log.loki.field.kubernetes.prefix=off
 quarkus.log.loki.field.kubernetes.field.containername.include=false
 
+# to turn off verbose FOP messages
+quarkus.log.category."org.apache.fop.apps".level=ERROR
+
 
 # Live reload
 

e-invoice-api/src/native-test/kotlin/net/codinux/invoicing/api/InvoicingResourceIT.kt

@@ -0,0 +1,6 @@
+package net.codinux.invoicing.api
+
+import io.quarkus.test.junit.QuarkusIntegrationTest
+
+@QuarkusIntegrationTest
+class InvoicingResourceIT : InvoicingResourceTest()

e-invoice-api/src/test/kotlin/net/codinux/invoicing/api/InvoicingResourceTest.kt

@@ -0,0 +1,20 @@
+package net.codinux.invoicing.api
+
+import io.quarkus.test.junit.QuarkusTest
+import io.restassured.RestAssured.given
+import org.hamcrest.CoreMatchers.`is`
+import org.junit.jupiter.api.Test
+
+@QuarkusTest
+class InvoicingResourceTest {
+
+    @Test
+    fun testHelloEndpoint() {
+        given()
+            .`when`().get("/hello")
+            .then()
+            .statusCode(200)
+            .body(`is`("Hello from Quarkus REST"))
+    }
+
+}