create controller

src/main/java/ntnu/idatt2016/v233/SmartMat/controller/RecipeController.java

+package ntnu.idatt2016.v233.SmartMat.controller;
+
+import org.springframework.web.bind.annotation.RestController;
+
+import lombok.AllArgsConstructor;
+import ntnu.idatt2016.v233.SmartMat.entity.Recipe;
+import ntnu.idatt2016.v233.SmartMat.service.RecipeService;
+
+import java.util.List;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+/**
+ * This class is responsible for handling requests related to recipes
+ * 
+ * @author Stian Lyng
+ * @version 1.0
+ */
+@AllArgsConstructor
+@RestController
+@RequestMapping("/api/recipe")
+public class RecipeController {
+
+    /**
+     * The recipe service
+     */
+    private final RecipeService recipeService;   
+
+    /**
+     * Gets a recipe by its id
+     * @param id the id of the recipe
+     * @return the recipe if it exists, otherwise 404
+     */
+    @GetMapping("/{id}")
+    public ResponseEntity<Recipe> getRecipeById(@PathVariable("id") Long id) {
+        return recipeService.getRecipeById(id)
+                .map(ResponseEntity::ok)
+                .orElseGet(() -> ResponseEntity.notFound().build());
+    }
+    
+    /**
+     * Gets all recipes with a given name
+     *
+     * @param name the name of the recipe
+     * @return a list of recipes with the given name, otherwise 404
+     */
+    @GetMapping("/name/{name}")
+    public ResponseEntity<List<Recipe>> getRecipeByName(@PathVariable("name") String name) {
+        List<Recipe> recipes = recipeService.getRecipesByName(name);
+        if (recipes.isEmpty()) {
+            return ResponseEntity.notFound().build();
+        }
+        return ResponseEntity.ok(recipes);
+    }
+}