Merge branch 'feature/42-implement-allergies-controller' into 'main'

implement allergy controller

See merge request idatt2106-v23-03/backend!108

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

+package ntnu.idatt2016.v233.SmartMat.controller;
+
+import lombok.AllArgsConstructor;
+import ntnu.idatt2016.v233.SmartMat.dto.response.AllergyResponse;
+import ntnu.idatt2016.v233.SmartMat.entity.product.Allergy;
+import ntnu.idatt2016.v233.SmartMat.service.AllergyService;
+
+import java.util.List;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+/**
+ * Controller for allergies
+ * @author Stian Lyng
+ * @version 1.0
+ */
+@AllArgsConstructor
+@RestController
+@RequestMapping("/api/allergies")
+public class AllergyController {
+    
+    /**
+     * Service for allergies
+     */
+    private final AllergyService allergyService;
+
+    /**
+     * Gets allergy by name, also includes products that contain the allergy
+     *
+     * @param name Name of allergy
+     * @return Allergies including products that contain the allergy
+     */
+    @GetMapping("/id/{name}")
+    public ResponseEntity<Allergy> getAllergyByName(@PathVariable ("name") String name) {
+        return allergyService.getAllergyByName(name)
+                .map(ResponseEntity::ok)
+                .orElseGet(() -> ResponseEntity.notFound().build());
+    }
+
+    /**
+     * Gets list of all allergies, without products
+     * 
+     * @return List of allergies, without products that contain the allergy
+     */
+    @GetMapping("/all")
+    public ResponseEntity<List<AllergyResponse>> getAllAllergies() {
+        List<AllergyResponse> allergies = allergyService.getAllAllergies();
+        if (allergies.isEmpty()) {
+            return ResponseEntity.notFound().build();
+        }
+        return ResponseEntity.ok(allergies);
+    }
+    
+}

src/main/java/ntnu/idatt2016/v233/SmartMat/dto/response/AllergyResponse.java

+package ntnu.idatt2016.v233.SmartMat.dto.response;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * This class represents a response for a weekly menu.
+ */
+@Data
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+public class AllergyResponse {
+    private String name;
+    private String description;
+}

src/main/java/ntnu/idatt2016/v233/SmartMat/service/AllergyService.java

+package ntnu.idatt2016.v233.SmartMat.service;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import ntnu.idatt2016.v233.SmartMat.dto.response.AllergyResponse;
+import ntnu.idatt2016.v233.SmartMat.entity.product.Allergy;
+import ntnu.idatt2016.v233.SmartMat.repository.AllergyRepository;
+
+/**
+ * Service for allergies
+ * @author Stian Lyng
+ * @version 1.0
+ */
+@Service
+public class AllergyService {
+    
+    /**
+     * Repository for allergies
+     */
+    @Autowired
+    private AllergyRepository allergyRepository;
+    
+    /**
+     * Returns all allergies
+     * @return List of allergies
+     */
+    public List<AllergyResponse> getAllAllergies() {
+        List<Allergy> allergies = allergyRepository.findAll();
+        return allergies.stream()
+            .map(allergy -> AllergyResponse.builder()
+                    .name(allergy.getName())
+                    .description(allergy.getDescription())
+                    .build())
+            .collect(Collectors.toList());   
+    }
+    
+    /**
+     * Returns allergy by name
+     * 
+     * @param name Name of allergy
+     * @return Optional of allergy
+     */
+    public Optional<Allergy> getAllergyByName(String name) {
+        return allergyRepository.findById(name);
+    }
+    
+    /**
+     * Saves allergy
+     * @param allergy Allergy to save
+     */
+    public void saveAllergy(Allergy allergy) {
+        allergyRepository.save(allergy);
+    }
+    
+    /**
+     * Deletes allergy by name
+     * 
+     * @param name Name of allergy to delete
+     */
+    public void deleteAllergyByName(String name) {
+        allergyRepository.deleteById(name);
+    }
+}