get fridge by id

src/main/java/ntnu/idatt2016/v233/SmartMat/controller/group/FridgeController.java

@@ -37,6 +37,19 @@ public class FridgeController {
                 .orElseGet(() -> ResponseEntity.notFound().build());
     }
 
+    /**
+     * Gets the fridge by its fridge id
+     * @param fridgeId the id of the fridge
+     * @return the fridge if it exists, or a 404 if it doesn't
+     */
+    @GetMapping("/fridge/{fridgeId}")
+    public ResponseEntity<Fridge> getFridgeByFridgeId(@PathVariable("fridgeId") long fridgeId) {
+        return fridgeService.getFridgeByFridgeId(fridgeId)
+                .map(ResponseEntity::ok)
+                .orElseGet(() -> ResponseEntity.notFound().build());
+    }
+
+
     /**
      * Adds a product to the fridge of a group
      *

src/main/java/ntnu/idatt2016/v233/SmartMat/service/group/FridgeService.java

@@ -37,6 +37,17 @@ public class FridgeService {
     public Optional<Fridge> getFridgeByGroupId(long groupId) {
         return fridgeRepository.findByGroupId(groupId);
     }
+    
+    /**
+     * Gets the fridge by its fridge id
+     * 
+     * @param fridgeId the id of the fridge
+     * @return the fridge if it exists
+     */
+    public Optional<Fridge> getFridgeByFridgeId(long fridgeId) {
+        return fridgeRepository.findById(fridgeId);
+    }
+
 
     /**
      * Add a product to the fridge of a group