[Added] Start of the DataService (and data collecting system)

backend/src/main/java/com/ninjaws/quiz/models/Question.java

@@ -7,10 +7,20 @@ import java.util.List;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import jakarta.persistence.*;
 import lombok.Getter;
+import lombok.Setter;
 
+@Entity
+@Table(name = "question")
 @Getter
+@Setter
 public class Question {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
     private String type;
     private String difficulty;
     private String category;

backend/src/main/java/com/ninjaws/quiz/repositories/QuestionRepository.java

@@ -0,0 +1,8 @@
+package com.ninjaws.quiz.repositories;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import com.ninjaws.quiz.models.Question;
+
+public interface QuestionRepository extends JpaRepository<Question, Long> {
+}

backend/src/main/java/com/ninjaws/quiz/services/DataService.java

@@ -0,0 +1,27 @@
+package com.ninjaws.quiz.services;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.ninjaws.quiz.models.Question;
+import com.ninjaws.quiz.repositories.QuestionRepository;
+
+@Service
+public class DataService {
+    @Autowired
+    private QuestionRepository questionRepository;
+
+    public List<Question> getAllQuestions() {
+        return questionRepository.findAll();
+    }
+
+    public Question saveQuestion(Question question) {
+        return questionRepository.save(question);
+    }
+
+    public List<Question> saveQuestions(List<Question> questions) {
+        return questionRepository.saveAll(questions);
+    }
+}

backend/src/main/java/com/ninjaws/quiz/services/ResponseHandlingService.java

@@ -11,6 +11,8 @@ public class ResponseHandlingService {
 
     @Autowired
     private CacheService cacheService;
+    @Autowired
+    private DataService dataService;
 
     /**
      * If there is no sessionId, then this is a request from the scheduler
@@ -62,6 +64,7 @@ public class ResponseHandlingService {
         switch (response.getResponseCode()) {
             case 0:
                 // TODO: Store in DB
+                dataService.saveQuestions(response.getResults());
                 break;
             case 4:
                 // Signal DataService that we have extracted all the data. Stop gathering, switch to caching-mode

backend/src/main/java/com/ninjaws/quiz/services/SchedulerService.java

@@ -27,6 +27,8 @@ public class SchedulerService {
         Request request = queueService.popFromQueue();
         if (request != null) {
             apiService.handleRequest(request);
+        } else {
+            apiService.collectBulk();
         }
     }   
     

backend/src/main/java/com/ninjaws/quiz/services/StorageService.java

@@ -1,5 +0,0 @@
-package com.ninjaws.quiz.services;
-
-public class StorageService {
-    
-}