Merge branch '15-enable-cors-for-frontend-interaction' into 'dev'

Resolve "Enable CORS for frontend interaction"

Closes #15

See merge request sa4-2020/the-sanmarinoes/backend!18

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/config/CORSFilter.java

@@ -0,0 +1,32 @@
+package ch.usi.inf.sa4.sanmarinoes.smarthut.config;
+
+import java.io.IOException;
+import javax.servlet.*;
+import javax.servlet.http.HttpServletResponse;
+import org.springframework.stereotype.Component;
+
+/**
+ * Add CORS headers to each response in order to please the frontend requests, coming from a
+ * different host for now (thanks to the difference in ports). Andrea would you please stop
+ * complaining now
+ */
+@Component
+public class CORSFilter implements Filter {
+
+    @Override
+    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
+            throws IOException, ServletException {
+        HttpServletResponse response = (HttpServletResponse) res;
+        response.setHeader("Access-Control-Allow-Origin", "*");
+        response.setHeader("Access-Control-Allow-Methods", "HEAD, PUT, POST, GET, OPTIONS, DELETE");
+        response.setHeader("Access-Control-Max-Age", "3600");
+        response.setHeader("Access-Control-Allow-Headers", "x-requested-with");
+        chain.doFilter(req, res);
+    }
+
+    @Override
+    public void init(FilterConfig filterConfig) {}
+
+    @Override
+    public void destroy() {}
+}

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/config/SpringFoxConfig.java

@@ -69,7 +69,8 @@ public class SpringFoxConfig {
     private Predicate<String> paths() {
         return regexPredicate("/auth.*")
                 .or(regexPredicate("/room.*"))
-            .or(regexPredicate("/register.*"));
+                .or(regexPredicate("/register.*"))
+                .or(regexPredicate("/"));
     }
 
     /**

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/AuthenticationController.java

@@ -18,7 +18,6 @@ import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.web.bind.annotation.*;
 
 @RestController
-@CrossOrigin
 @RequestMapping("/auth")
 public class AuthenticationController {
 

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/WelcomeController.java

@@ -1,23 +1,15 @@
 package ch.usi.inf.sa4.sanmarinoes.smarthut.controller;
 
-import ch.usi.inf.sa4.sanmarinoes.smarthut.models.*;
-import java.util.*;
 import org.springframework.boot.autoconfigure.*;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
 @RestController
 @EnableAutoConfiguration
-// @Mapping("/light")
 public class WelcomeController {
 
     @GetMapping
-    List<Device> testDevices() {
+    ResponseEntity<Void> testConnection() {
-        return Arrays.asList(
+        return ResponseEntity.ok(null);
-                new KnobDimmer(),
-                new RegularLight(),
-                new MotionSensor(),
-                new Sensor(),
-                new SmartPlug(),
-                new Switch());
     }
 }