Implemented admin and user functionality using express

Quiz app/Login.bru

@@ -6,6 +6,18 @@ meta {
 
 post {
   url: http://localhost:3000/api/auth/login
-  body: none
+  body: json
   auth: inherit
 }
+
+headers {
+  ~content-type: application/json
+}
+
+body:json {
+  {
+    "email":"admin@gmail.com",
+    "password":"admin@123",
+    "role":"admin"
+  }
+}

Quiz app/admin.bru

@@ -5,7 +5,23 @@ meta {
 }
 
 post {
-  url: http://localhost:3000/api/admin/createQuiz
-  body: none
-  auth: inherit
+  url: http://localhost:3000/api/admin/assign-quiz
+  body: json
+  auth: bearer
+}
+
+headers {
+  content-type: application/json
+}
+
+auth:bearer {
+  token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOjEsImVtYWlsIjoiYWRtaW5AZ21haWwuY29tIiwicm9sZSI6ImFkbWluIiwiaWF0IjoxNzQ4NTIyMTg2LCJleHAiOjE3NDg1MjU3ODZ9.WTUXrCWQuLqncxQzt9XB2HBMvJ5OXb2MeYP6SWmHUAc
+}
+
+body:json {
+  {
+    "user_id": 2,
+    "quiz_id": 5
+  }
+  
 }

Quiz app/dashboard.bru

@@ -5,7 +5,11 @@ meta {
 }
 
 get {
-  url: http://localhost:3000/api/dashboard/admin
+  url: http://localhost:3000/api/dashboard/user
   body: none
   auth: inherit
 }
+
+headers {
+  Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOjIsImVtYWlsIjoic2hhZ2FuYXpAZ21haWwuY29tIiwicm9sZSI6InVzZXIiLCJpYXQiOjE3NDg1MTQzNjEsImV4cCI6MTc0ODUxNzk2MX0.BOFvb33tIZYkXTJ_1yG8xNfhdKojjVvNVgNRqp9lvw0
+}

Quiz app/register.bru

@@ -6,6 +6,20 @@ meta {
 
 post {
   url: http://localhost:3000/api/auth/register
-  body: none
+  body: json
   auth: inherit
 }
+
+headers {
+  ~content-type: application/json
+}
+
+body:json {
+  {
+    "email": "shaganaz@gmail.com",
+    "password": "shaganaz",
+    "role": "user"
+  }
+  
+  
+}

Quiz app/user.bru

+meta {
+  name: user
+  type: http
+  seq: 5
+}
+
+get {
+  url: http://localhost:3000/api/user/take-quiz/2/1
+  body: none
+  auth: inherit
+}

app.js

@@ -8,8 +8,9 @@ app.use(express.json());
 app.use(express.urlencoded({ extended: true }));
 
 app.use('/api/auth', require('./server/routes/authroutes'));
-app.use('/api/dashboard', require('./server/routes/dashboard'))
+app.use('/api/dashboard', require('./server/routes/dashboard'));
 app.use('/api/admin', require('./server/routes/adminroutes'));
+app.use('/api/user', require('./server/routes/userroutes'));
 const PORT = process.env.PORT || 3000;
 app.listen(PORT, () => {
   console.log(`Server is running at http://localhost:${PORT}`);

server/controller/adminController

@@ -34,4 +34,34 @@ exports.assignQuiz = async (req, res) => {
   } catch (err) {
     return res.json({ message: 'Unable to assign quiz', error: err.message });
   }
-};
\ No newline at end of file
+};
+
+exports.getUserResult = async (req, res) => {
+  const { user_id, quiz_id } = req.params;
+
+  try {
+    const [results] = await db.query(`select q.question_text,
+        ua.answer as selected_option_id,
+        o1.option_text as selected_answer,
+        o2.option_text as correct_answer,
+        ua.is_correct
+        from user_answers ua
+        join questions q ON ua.question_id = q.id
+        join options o1 ON ua.answer = o1.id
+        join options o2 ON o2.question_id = q.id and o2.is_correct = 1
+        where ua.user_id = ? and ua.quiz_id = ?`,
+        [user_id, quiz_id]
+      );
+
+    const [summary] = await db.query(`SELECT score, total from results where user_id = ? and quiz_id = ?`,[user_id, quiz_id]);
+
+    return res.json({
+      score: summary[0]?.score || 0,
+      total: summary[0]?.total || 0,
+      answers: results
+    });
+
+  } catch (err) {
+    return res.status(500).json({ message: 'Error fetching user result', error: err.message });
+  }
+};

server/controller/userController.js

+const db=require('../config/database');
+
+exports.takeQuiz=async(req,res)=>{
+    const {quiz_id,user_id}=req.params;
+    try{
+        const[assigned]=await db.query(`SELECT* from user_quizzes where user_id=? and quiz_id=? and status='pending'`,[user_id,quiz_id]);
+        if(assigned.length===0){
+            return res.json({message:'Quiz completed or not assigned properly'});
+        }
+        const[quiz]=await db.query(`select id,title,description from quizzes where id=?`,[quiz_id]);
+        const[questions]=await db.query(`select q.id as question_id, q.question_text,
+            o.id as option_id, o.option_text
+            from questions q
+            join options o on q.id=o.question_id
+            where q.quiz_id=?
+            order by q.id,o.id`,[quiz_id]);
+            const questionsMap = {};
+            for (const row of questions) {
+                if (!questionsMap[row.question_id]) {
+                    questionsMap[row.question_id] = {
+                    question_id: row.question_id,
+                    question_text: row.question_text,
+                    options: []
+                    };
+                }
+            questionsMap[row.question_id].options.push({
+                option_id: row.option_id,
+                option_text: row.option_text
+            });
+        }
+        return res.json({
+        quiz: quiz[0],
+        questions: Object.values(questionsMap)
+    });
+    }
+    catch(err){
+        return res.json({message:"Error fetching quiz",error:err.message});
+    }
+};
+
+exports.submitQuiz = async (req, res) => {
+  const { user_id, quiz_id, answers } = req.body;
+  try {
+    let score = 0;
+    const total = answers.length;
+    for (const ans of answers) {
+      const [correct] = await db.query(
+        'select is_correct from options where id = ?',
+        [ans.selected_option_id]
+      );
+      const isCorrect = correct[0]?.is_correct === 1 ? 1 : 0;
+      if (isCorrect) score++;
+      await db.query(
+        `insert into user_answers (user_id, quiz_id, question_id, answer, is_correct)
+         values (?, ?, ?, ?, ?)`,
+        [user_id, quiz_id, ans.question_id, ans.selected_option_id, isCorrect]
+      );
+    }
+    await db.query(
+      `insert into results (user_id, quiz_id, score, total)
+       values (?, ?, ?, ?)`,
+      [user_id, quiz_id, score, total]
+    );
+    await db.query(
+      `update user_quizzes set status = 'completed' where user_id = ? AND quiz_id = ?`,
+      [user_id, quiz_id]
+    );
+    return res.json({ message: 'Quiz submitted', score, total });
+  } catch (err) {
+    return res.status(500).json({ message: 'Error submitting quiz', error: err.message });
+  }
+};
+
+
+
+
+
+
+
+
+
+
+
+
+
+

server/routes/adminroutes.js

@@ -6,4 +6,5 @@ const adminctrl=require('../controller/adminController');
 router.post('/create-quiz',authenticateAdmin,adminctrl.createQuiz);
 router.post('/create-question',authenticateAdmin,adminctrl.createQuestion);
 router.post('/assign-quiz', authenticateAdmin, adminctrl.assignQuiz);
+router.get('/user-result/:user_id/:quiz_id', authenticateAdmin, adminctrl.getUserResult);
 module.exports=router;
\ No newline at end of file

server/routes/userroutes.js

+const express=require('express');
+const router = express.Router();
+const authenticateUser=require('../middleware/usermiddleware');
+const userctrl=require('../controller/userController');
+
+router.get('/take-quiz/:user_id/:quiz_id',authenticateUser,userctrl.takeQuiz);
+router.post('/submit-quiz',authenticateUser,userctrl.submitQuiz);
+module.exports=router;
\ No newline at end of file