From f5f6d325bb8c91b568ae9697350203a59212ecbf Mon Sep 17 00:00:00 2001
From: Matheus Oliveira da Silva <matheus.6148@gmail.com>
Date: Tue, 17 Jun 2025 10:32:11 -0300
Subject: [PATCH] Fix: Implement file watching for OpenAPI files in development
 mode

---
 .../generator/MoquProjectProcessor.java       | 11 ++++++++++
 .../generator/MoquProjectProcessorTest.java   | 21 ++++++++++++++++++-
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/moqu/deployment/src/main/java/io/quarkiverse/openapi/generator/MoquProjectProcessor.java b/moqu/deployment/src/main/java/io/quarkiverse/openapi/generator/MoquProjectProcessor.java
index 94ed8ff79..981c2520b 100644
--- a/moqu/deployment/src/main/java/io/quarkiverse/openapi/generator/MoquProjectProcessor.java
+++ b/moqu/deployment/src/main/java/io/quarkiverse/openapi/generator/MoquProjectProcessor.java
@@ -20,6 +20,7 @@
 import io.quarkus.deployment.IsDevelopment;
 import io.quarkus.deployment.annotations.BuildProducer;
 import io.quarkus.deployment.annotations.BuildStep;
+import io.quarkus.deployment.builditem.HotDeploymentWatchedFileBuildItem;
 import io.quarkus.runtime.util.ClassPathUtils;
 
 public class MoquProjectProcessor {
@@ -68,6 +69,16 @@ MoquProjectBuildItem generate(MoquConfig config) {
         }
     }
 
+    @BuildStep(onlyIf = { IsDevelopment.class })
+    void watchOpenApiFiles(MoquConfig config, BuildProducer<HotDeploymentWatchedFileBuildItem> watchedPaths)
+            throws IOException {
+        ClassPathUtils.consumeAsPaths(config.resourceDir(), path -> {
+            if (Files.exists(path)) {
+                watchedPaths.produce(new HotDeploymentWatchedFileBuildItem(path.toString(), Files.isDirectory(path)));
+            }
+        });
+    }
+
     @BuildStep(onlyIf = { IsDevelopment.class })
     void consume(Optional<MoquProjectBuildItem> moquProject,
             BuildProducer<MoquBuildItem> moquMocks) {
diff --git a/moqu/deployment/src/test/java/io/quarkiverse/openapi/generator/MoquProjectProcessorTest.java b/moqu/deployment/src/test/java/io/quarkiverse/openapi/generator/MoquProjectProcessorTest.java
index 76347c237..cfe43ba71 100644
--- a/moqu/deployment/src/test/java/io/quarkiverse/openapi/generator/MoquProjectProcessorTest.java
+++ b/moqu/deployment/src/test/java/io/quarkiverse/openapi/generator/MoquProjectProcessorTest.java
@@ -9,6 +9,8 @@
 
 public class MoquProjectProcessorTest {
 
+    private static final String WIREMOCK_MAPPINGS_JSON_PATH = "/q/moqu/json/api/wiremock-mappings.json";
+
     @RegisterExtension
     static final QuarkusDevModeTest unitTest = new QuarkusDevModeTest()
             .withApplicationRoot(javaArchive -> javaArchive
@@ -38,10 +40,27 @@ void testModeAsDownload() {
     @Test
     void testModeAsDownloadUsingJson() {
         RestAssured.given()
-                .when().get("/q/moqu/json/api/wiremock-mappings.json")
+                .when().get(WIREMOCK_MAPPINGS_JSON_PATH)
                 .then()
                 .statusCode(200)
                 .body(Matchers.containsString("Alice"))
                 .log().ifError();
     }
+
+    @Test
+    void testDevModeWatchOpenApiFiles() {
+        RestAssured.given()
+                .when().get(WIREMOCK_MAPPINGS_JSON_PATH)
+                .then()
+                .statusCode(200)
+                .body(Matchers.containsString("80"));
+
+        unitTest.modifyResourceFile("openapi/api.json", (content) -> content.replace("80", "77"));
+
+        RestAssured.given()
+                .when().get(WIREMOCK_MAPPINGS_JSON_PATH)
+                .then()
+                .statusCode(200)
+                .body(Matchers.containsString("77"));
+    }
 }