From 0e138bf2a9e7e6bc659ee62a182d8462c1ba7d0d Mon Sep 17 00:00:00 2001
From: Kai Moritz <kai@juplo.de>
Date: Fri, 6 Jan 2023 01:45:58 +0100
Subject: [PATCH] feat: Allowed the frontend as origin for CORS

---
 .../chat/backend/ChatBackendApplication.java     | 16 ++++++++++++++--
 .../chat/backend/ChatBackendProperties.java      |  1 +
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/main/java/de/juplo/kafka/chat/backend/ChatBackendApplication.java b/src/main/java/de/juplo/kafka/chat/backend/ChatBackendApplication.java
index 0700496e..dbd12b00 100644
--- a/src/main/java/de/juplo/kafka/chat/backend/ChatBackendApplication.java
+++ b/src/main/java/de/juplo/kafka/chat/backend/ChatBackendApplication.java
@@ -6,18 +6,30 @@ import jakarta.annotation.PreDestroy;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.context.annotation.Bean;
+import org.springframework.web.reactive.config.CorsRegistry;
+import org.springframework.web.reactive.config.WebFluxConfigurer;
 import reactor.core.publisher.Flux;
 
 
 @SpringBootApplication
-public class ChatBackendApplication
+public class ChatBackendApplication implements WebFluxConfigurer
 {
+	@Autowired
+	ChatBackendProperties properties;
 	@Autowired
 	ChatHome chatHome;
 	@Autowired
 	StorageStrategy storageStrategy;
 
+
+	@Override
+	public void addCorsMappings(CorsRegistry registry)
+	{
+		registry
+				.addMapping("/**")
+				.allowedOrigins(properties.getAllowedOrigins());
+	}
+
 	@PreDestroy
 	public void onExit()
 	{
diff --git a/src/main/java/de/juplo/kafka/chat/backend/ChatBackendProperties.java b/src/main/java/de/juplo/kafka/chat/backend/ChatBackendProperties.java
index 598e8ce0..122ac619 100644
--- a/src/main/java/de/juplo/kafka/chat/backend/ChatBackendProperties.java
+++ b/src/main/java/de/juplo/kafka/chat/backend/ChatBackendProperties.java
@@ -13,4 +13,5 @@ import java.nio.file.Paths;
 public class ChatBackendProperties
 {
   private String datadir = Paths.get(System.getProperty("java.io.tmpdir"),"chat", "backend").toString();
+  private String allowedOrigins = "http://localhost:4200";
 }
-- 
2.20.1