[Added] Tests and some more functionality to the Services

backend/src/main/java/com/ninjaws/quiz/controllers/QuizController.java

@@ -0,0 +1,44 @@
+package com.ninjaws.quiz.controllers;
+
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.ninjaws.quiz.models.Answers;
+import com.ninjaws.quiz.models.Session;
+import com.ninjaws.quiz.services.QuizService;
+
+@RestController
+@RequestMapping("/quiz")
+public class QuizController {
+
+    @Autowired
+    private QuizService quizService;
+
+    @GetMapping("/questions")
+    public String startSession(
+            @RequestParam(required = true) String amount,
+            @RequestParam(required = false) Integer category,
+            @RequestParam(required = false) String difficulty,
+            @RequestParam(required = false) String type
+    ) {
+        return quizService.createSession(quizService.jsonToQuizSettings("todo"));
+    }
+
+    @GetMapping("/status/{sessionId}")
+    public Optional<Session> checkStatus(@PathVariable String sessionId) {
+        return quizService.checkSession(sessionId);
+    }
+
+    @PostMapping("/checkanswers")
+    public String checkAnswers(@RequestBody Answers answers) {
+        return quizService.getScore(answers);
+    }
+}