diff --git a/.env.prod b/.env.prod
index 5ee9c9b..034e084 100644
--- a/.env.prod
+++ b/.env.prod
@@ -1,4 +1,4 @@
-DJANGO_ALLOWED_HOSTS=127.0.0.1,imam-javad.nwhco.ir,www.imam-javad.nwhco.ir,*.nwhco.ir,188.40.92.124,88.99.212.243
+DJANGO_ALLOWED_HOSTS=127.0.0.1,imamjavad.nwhco.ir,www.imamjavad.nwhco.ir,*.nwhco.ir,188.40.92.124,88.99.212.243
 DJANGO_SETTINGS_MODULE=config.settings.production
 
 
diff --git a/apps/chat/migrations/0004_roommessage_unread_messages_count.py b/apps/chat/migrations/0004_roommessage_unread_messages_count.py
new file mode 100644
index 0000000..5811ba2
--- /dev/null
+++ b/apps/chat/migrations/0004_roommessage_unread_messages_count.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.4 on 2024-11-26 01:30
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('chat', '0003_auto_20241125_1737'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='roommessage',
+            name='unread_messages_count',
+            field=models.IntegerField(default=0),
+        ),
+    ]
diff --git a/apps/chat/models.py b/apps/chat/models.py
index ecd8d89..d5263dc 100644
--- a/apps/chat/models.py
+++ b/apps/chat/models.py
@@ -46,7 +46,8 @@ class RoomMessage(models.Model):
         default=RoomTypeChoices.GROUP,
         verbose_name="Room Type"
     )
-    
+    unread_messages_count = models.IntegerField(default=0)
+
     def __str__(self):
         if self.room_type == self.RoomTypeChoices.GROUP:
             return f"Group Room: {self.course.title if self.course else 'N/A'}"
diff --git a/apps/course/admin/course.py b/apps/course/admin/course.py
index b75ba99..f987c6f 100644
--- a/apps/course/admin/course.py
+++ b/apps/course/admin/course.py
@@ -42,7 +42,8 @@ class CourseAdmin(AjaxDatatable):
     search_fields = ('title', 'description')
     exclude = ('slug', )
 
-
+    # def has_change_permission(self, request, obj=None):
+        # return False
     # @admin.display(description='Add Student')
     # def _add_student(self, obj):
         
diff --git a/apps/course/doc.py b/apps/course/doc.py
index d7b2e39..55e929d 100644
--- a/apps/course/doc.py
+++ b/apps/course/doc.py
@@ -51,6 +51,11 @@ def doc_courses_lesson():
 (مقدار is_complated مشخص میکند آیا کاربر این درس را گذرانده است
 ممکن است درس دارای کوعیز باشد که باید در زیر آ» مانند طرح نمایش داده شود
 )
+
+دارای ابجکت کوعیز که لیستی از کوعیز های مربوط به یک درس را نمایش میدهد
+بایستی مانند طرح در زیر درس قرار داده شود
+و دارای مقدار permission
+است که مشخص میکند ایا این کاربر کوعیز را از قبل شرکت کرده است
 ---
 ```
 
@@ -81,12 +86,27 @@ def doc_courses_lesson():
         "content_file": null,
         "video_link": "https://example.com/videos/variables_intro.mp4",
         "is_complated": true,
-        "quiz": {
-            "title": "",
-            "description": "",
-            "is_complated": "",
-        }
+        "quizs": [
+          {
+            "id": 1,
+            "title": "Тестовые курсы",
+            "description": "урок 1-2",
+            "permission": true,
+            "each_question_timing": 30
+          }
+        ]
+    },
+    {
+        "id": 1,
+        "title": "Introduction to Variables",
+        "duration": 30,
+        "content_type": "link",
+        "content_file": null,
+        "video_link": "https://example.com/videos/variables_intro.mp4",
+        "is_complated": true,
+        "quizs": null
     }
+    
 ]
 ```
 """
diff --git a/apps/course/migrations/0005_participant_unread_messages_count.py b/apps/course/migrations/0005_participant_unread_messages_count.py
new file mode 100644
index 0000000..acf281f
--- /dev/null
+++ b/apps/course/migrations/0005_participant_unread_messages_count.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.4 on 2024-11-26 01:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('course', '0004_auto_20241122_1913'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='participant',
+            name='unread_messages_count',
+            field=models.IntegerField(default=0),
+        ),
+    ]
diff --git a/apps/course/models/participant.py b/apps/course/models/participant.py
index 8dbd266..2e99a4e 100644
--- a/apps/course/models/participant.py
+++ b/apps/course/models/participant.py
@@ -18,7 +18,8 @@ class Participant(models.Model):
         related_name='participants'
     )
     joined_date = models.DateTimeField(auto_now_add=True)
-
+    unread_messages_count = models.IntegerField(default=0)
+    
     class Meta:
         unique_together = ('student', 'course') 
         
\ No newline at end of file
diff --git a/apps/course/serializers/lesson.py b/apps/course/serializers/lesson.py
index 19dc90b..43c6f6b 100644
--- a/apps/course/serializers/lesson.py
+++ b/apps/course/serializers/lesson.py
@@ -1,8 +1,6 @@
-
-
 from rest_framework import serializers
 from apps.course.models import Lesson, Participant, LessonCompletion
-
+from apps.quiz.serializers import QuizListSerializer
 
 
 
@@ -10,11 +8,11 @@ from apps.course.models import Lesson, Participant, LessonCompletion
 
 class LessonSerializer(serializers.ModelSerializer):
     is_complated = serializers.SerializerMethodField()
-    quiz = serializers.SerializerMethodField()    
+    quizs = serializers.SerializerMethodField()    
     
     class Meta:
         model = Lesson
-        fields = ['id', 'title', 'priority', 'is_active', 'duration', 'content_type', 'content_file', 'video_link', 'is_complated', 'quiz']
+        fields = ['id', 'title', 'priority', 'is_active', 'duration', 'content_type', 'content_file', 'video_link', 'is_complated', 'quizs']
         
     def get_is_complated(self, obj):
         request = self.context.get('request')
@@ -35,5 +33,8 @@ class LessonSerializer(serializers.ModelSerializer):
         ).exists()
 
 
-    def get_quiz(self, obj):
-        return {}
+    def get_quizs(self, obj):
+        quizzes = obj.quizzes.all()  # استفاده از related_name 'quizzes' برای دسترسی به کوییزهای درس
+        if quizzes.exists():
+            return QuizListSerializer(quizzes, many=True, context=self.context).data
+        return None
diff --git a/apps/course/views/lesson.py b/apps/course/views/lesson.py
index 831d1cd..cec6a12 100644
--- a/apps/course/views/lesson.py
+++ b/apps/course/views/lesson.py
@@ -3,14 +3,14 @@ from rest_framework.generics import ListAPIView, RetrieveAPIView
 from drf_yasg.utils import swagger_auto_schema
 from drf_yasg import openapi
 from django.shortcuts import get_object_or_404
-
+from rest_framework import status
 
 from apps.course.serializers import (
     LessonSerializer
 )
 from apps.course.models import Course, Lesson
 from apps.course.doc import *
-
+from utils.exceptions import AppAPIException 
 
 
 
@@ -18,11 +18,17 @@ class LessonListView(ListAPIView):
     serializer_class = LessonSerializer
     queryset = Lesson.objects.filter(is_active=True)  
 
-# doc_courses_lesson
     @swagger_auto_schema(
         operation_description=doc_courses_lesson(),
     )
+    def get(self, request, *args, **kwargs):
+        return super().get(request, *args, **kwargs)
+    
     def get_queryset(self):
         course_slug = self.kwargs.get('slug')
-        course = get_object_or_404(Course, slug=course_slug)
+        course = get_object_or_404(Course, )
+        course = Course.objects.filter(slug=course_slug).first()
+        if not course:
+            raise AppAPIException({"message": "course not found"}, status_code=status.HTTP_404_NOT_FOUND)
+        
         return self.queryset.filter(course=course).order_by('priority','id')
diff --git a/apps/quiz/admin.py b/apps/quiz/admin.py
deleted file mode 100644
index 8c38f3f..0000000
--- a/apps/quiz/admin.py
+++ /dev/null
@@ -1,3 +0,0 @@
-from django.contrib import admin
-
-# Register your models here.
diff --git a/apps/quiz/admin/__init__.py b/apps/quiz/admin/__init__.py
new file mode 100644
index 0000000..42092ad
--- /dev/null
+++ b/apps/quiz/admin/__init__.py
@@ -0,0 +1,5 @@
+from .quiz import *
+from .question import *
+from .participant import *
+# from .prize import *
+# from .user_rank_quiz import *
\ No newline at end of file
diff --git a/apps/quiz/admin/participant.py b/apps/quiz/admin/participant.py
new file mode 100644
index 0000000..8775a8f
--- /dev/null
+++ b/apps/quiz/admin/participant.py
@@ -0,0 +1,61 @@
+from ajaxdatatable.admin import AjaxDatatable
+from django.contrib import admin
+from django.db.models import F, Q
+from django.contrib.admin import SimpleListFilter
+from django.utils.translation import gettext_lazy as _
+from apps.quiz.models import QuizParticipant, ParticipantAnswer
+from apps.account.models import User
+import datetime
+
+
+class ParticipantAnswerInline(admin.StackedInline):
+    model = ParticipantAnswer
+
+    readonly_fields = (
+        '_correct_answer', 'question', 'at_time', 'answer_timing',
+    )
+
+    def _correct_answer(self, obj):
+        return obj.correct_answer
+
+    def has_add_permission(self, request, obj):
+        return False
+
+    def has_delete_permission(self, request, obj=None):
+        return False
+
+    def get_queryset(self, request):
+        return super().get_queryset(request).annotate(correct_answer=F('question__correct_answer'))
+
+
+
+
+class UserEmailFilter(SimpleListFilter):
+    title = _('User Email')
+    parameter_name = 'user_email'
+
+    def lookups(self, request, model_admin):
+        users = User.objects.all()
+        return [(user.email, user.email) for user in users]
+
+    def queryset(self, request, queryset):
+        if self.value():
+            email = self.value().replace('%40', '@')
+            return queryset.filter(user__email=email)
+        return queryset
+
+
+@admin.register(QuizParticipant)
+class ParticipantAdmin(AjaxDatatable):
+    inlines = [ParticipantAnswerInline]
+    search_fields = ['user__username', 'user__fullname']
+    list_display = ['quiz', 'user', 'started_at', 'ended_at', 'total_timing', 'question_score', 'timing_score',
+                    'total_score']
+    latest_by = 'started_at'
+    list_filter = ['started_at', 'ended_at', 'quiz__status', UserEmailFilter]    
+
+
+
+
+
+
diff --git a/apps/quiz/admin/question.py b/apps/quiz/admin/question.py
new file mode 100644
index 0000000..a46e063
--- /dev/null
+++ b/apps/quiz/admin/question.py
@@ -0,0 +1,63 @@
+from ajaxdatatable.admin import AjaxDatatable
+from django import forms
+from django.contrib import admin
+
+from apps.quiz.models import Question
+
+
+class QuestionAdminForm(forms.ModelForm):
+    class Meta:
+        model = Question
+        exclude = ()
+        widgets = {
+            'correct_answer': forms.RadioSelect,
+            'question': forms.Textarea
+        }
+
+
+# @admin.register(Question)
+# class QuestionAdmin(AjaxDatatable):
+#     list_display = ('question', 'correct_answer', 'quiz', 'priority')
+#     form = QuestionAdminForm
+#     ordering = ("priority", "id",)
+#     fieldsets = (
+#         (
+#             '', {
+#                 'fields': (
+#                     'question',
+#                     ('option1', 'option2'),
+#                     ('option3', 'option4'),
+#                     'correct_answer',
+#                 )
+#             },
+#         ),
+#         (
+#             '', {
+#                 'fields': ('priority',)
+#             }
+#         )
+#     )
+
+class QuestionAdminInline(admin.StackedInline):
+    model = Question
+    list_display = ('question', 'correct_answer', 'quiz', 'priority')
+    form = QuestionAdminForm
+    ordering = ("priority", "id",)
+    extra = 0
+    fieldsets = (
+        (
+            '', {
+                'fields': (
+                    'question',
+                    ('option1', 'option2'),
+                    ('option3', 'option4'),
+                    'correct_answer',
+                )
+            },
+        ),
+        (
+            '', {
+                'fields': ('priority',)
+            }
+        )
+    )
diff --git a/apps/quiz/admin/quiz.py b/apps/quiz/admin/quiz.py
new file mode 100644
index 0000000..9520416
--- /dev/null
+++ b/apps/quiz/admin/quiz.py
@@ -0,0 +1,54 @@
+from ajaxdatatable.admin import AjaxDatatable
+from django.contrib import admin
+from django.db.models import Count
+from django.utils.safestring import mark_safe
+from django.utils.html import format_html
+from django.urls import reverse, path
+
+from apps.course.models import Lesson
+from apps.quiz.models import Quiz
+from .question import QuestionAdminInline
+
+
+
+
+@admin.register(Quiz)
+class QuizAdmin(AjaxDatatable):
+    search_fields = ['title', 'lesson__title']
+    list_display = ['title', 'description','lesson','each_question_timing', '_status', '_questions',]
+    autocomplete_fields = ['lesson',]
+    list_filter = ['each_question_timing',]
+    inlines = [QuestionAdminInline,]
+
+
+    def get_queryset(self, request):
+        queryset = super().get_queryset(request)
+        if request.user.groups.filter(name="Professor Group").exists():
+            return queryset.filter(lesson__course__professor=request.user)
+    
+        return queryset
+
+    def get_form(self, request, obj=None, **kwargs):
+        form = super().get_form(request, obj, **kwargs)
+        if obj is None:
+            form.base_fields['lesson'].queryset = Lesson.objects.all() if request.user.is_staff else Lesson.objects.filter(course__professor=request.user)
+            form.base_fields['lesson'].widget.can_add_related = False  
+ 
+        return form
+    
+            
+    @admin.display(description='Status', ordering='status')
+    def _status(self, obj):
+        if obj.status:
+            return mark_safe("<span class='badge badge-primary'>Active</span>")
+
+        return mark_safe("<span class='badge badge-warning'>Inactive</span>")
+
+    @admin.display(description='Questions', ordering='questions_count')
+    def _questions(self, obj):
+        return mark_safe(f"<a href='/admin/quiz/question/?quiz={obj.id}'>Questions: {obj.questions_count}</a>")
+
+    def get_queryset(self, request):
+        return super().get_queryset(request).annotate(
+            questions_count=Count('questions')
+        )
diff --git a/apps/quiz/admin/user_rank_quiz.py b/apps/quiz/admin/user_rank_quiz.py
new file mode 100644
index 0000000..e6b988d
--- /dev/null
+++ b/apps/quiz/admin/user_rank_quiz.py
@@ -0,0 +1,132 @@
+# import calendar
+# from django.utils import timezone
+
+# from ajaxdatatable.admin import AjaxDatatable
+# from django.contrib import admin
+# from django.utils.translation import gettext_lazy as _
+# from django.contrib.admin import SimpleListFilter
+# from django.db.models.functions import Rank, Coalesce
+# from django.db.models import Sum, F, Window, CharField
+# from django.utils.html import format_html
+# from apps.quiz.models import Quiz, QuizRankUser, Participant, QuizCategory
+# from apps.account.models import User
+
+
+# class QuizFilter(SimpleListFilter):
+#     title = _('Quiz')
+#     parameter_name = 'quiz'
+
+#     def lookups(self, request, model_admin):
+#         quizzes = Quiz.objects.all()
+#         return [(quiz.id, quiz.video.title) for quiz in quizzes]
+
+#     def queryset(self, request, queryset):
+#         if self.value():
+#             return queryset.filter(uquizzes__quiz__id=self.value())
+#         return queryset
+    
+# class QuizCategoryFilter(SimpleListFilter):
+#     title = _('Quiz Category')
+#     parameter_name = 'quiz_category'
+
+#     def lookups(self, request, model_admin):
+#         categories = QuizCategory.objects.all()
+#         return [(category.id, category.name) for category in categories]
+
+#     def queryset(self, request, queryset):
+#         if self.value():
+#             return queryset.filter(uquizzes__quiz__category__id=self.value())
+#         return queryset
+
+# class MonthFilter(SimpleListFilter):
+#     title = _('Month')
+#     parameter_name = 'month'
+
+#     def lookups(self, request, model_admin):
+#         return [(str(i), calendar.month_name[i]) for i in range(1, 13)]
+
+#     def queryset(self, request, queryset):
+#         if self.value():
+#             month = int(self.value())
+#             year = timezone.now().year
+#             return queryset.filter(uquizzes__started_at__year=year, uquizzes__started_at__month=month)
+#         return queryset
+
+
+# @admin.register(QuizRankUser)
+# class QuizRankUserAdmin(AjaxDatatable):
+#     list_display = ('username_link', 'get_total_score', 'get_rank')
+#     list_filter = (QuizFilter, QuizCategoryFilter, MonthFilter)
+#     readonly_fields = ('date_joined', 'last_login') 
+
+
+#     def get_queryset(self, request):
+#         queryset = super().get_queryset(request)
+        
+#         quiz_id = request.GET.get('quiz')
+#         category_id = request.GET.get('quiz_category')
+#         month = request.GET.get('month')
+
+#         filters = {}
+#         if quiz_id:
+#             filters['uquizzes__quiz_id'] = quiz_id
+#         if category_id:
+#             filters['uquizzes__quiz__category_id'] = category_id
+#         if month:
+#             month = int(month)
+#             year = timezone.now().year
+#             filters['uquizzes__started_at__year'] = year
+#             filters['uquizzes__started_at__month'] = month
+
+#         if filters:
+#             queryset = queryset.filter(**filters)
+
+#         users_scores = Participant.objects.filter(**{k.replace('uquizzes__', ''): v for k, v in filters.items()}).select_related('user').values(
+#             username=Coalesce(F('user__username'), F('user__email'), output_field=CharField())
+#         ).annotate(
+#             score=Sum('total_score')
+#         ).order_by('-score')
+
+#         # Add rank to each user using window function
+#         users_scores = users_scores.annotate(
+#             rank=Window(
+#                 expression=Rank(),
+#                 order_by=F('score').desc()
+#             )
+#         ).order_by("rank")
+
+#         user_scores_dict = {user['username']: user for user in users_scores}
+#         for user in queryset:
+#             user.score = user_scores_dict.get(user.username, {}).get('score', 0)
+#             user.rank = user_scores_dict.get(user.username, {}).get('rank', 'N/A')
+#         self.queryset = queryset
+#         return queryset
+    
+#     def has_view_permission(self, request, obj=None):
+#         return True
+
+#     def has_change_permission(self, request, obj=None):
+#         return False
+
+#     def has_add_permission(self, request):
+#         return False
+
+#     def has_delete_permission(self, request, obj=None):
+#         return False
+    
+#     def username_link(self, obj):
+#         return format_html('<a href="/en/admin/account/clientuser/{}/change/">{}</a>', obj.id, obj.username)
+#     username_link.short_description = 'Username'
+#     username_link.admin_order_field = 'username'    
+    
+#     def get_total_score(self, obj):
+#         for user in self.queryset:
+#             if user.id == obj.id:
+#                 return user.score
+#     get_total_score.short_description = 'Total Score'
+
+#     def get_rank(self, obj):
+#         for user in self.queryset:
+#             if user.id == obj.id:
+#                 return user.rank
+#     get_rank.short_description = 'Rank'
diff --git a/apps/quiz/apps.py b/apps/quiz/apps.py
index 3dc8afe..519127d 100644
--- a/apps/quiz/apps.py
+++ b/apps/quiz/apps.py
@@ -3,4 +3,4 @@ from django.apps import AppConfig
 
 class QuizConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
-    name = 'quiz'
+    name = 'apps.quiz'
diff --git a/apps/quiz/doc.py b/apps/quiz/doc.py
new file mode 100644
index 0000000..7099d7e
--- /dev/null
+++ b/apps/quiz/doc.py
@@ -0,0 +1,131 @@
+def doc_quiz_submit():
+    return """
+# 📝 ارسال پاسخ‌های کوییز
+
+این API برای ثبت شرکت کاربر در کوییز و ارسال پاسخ‌های مربوطه استفاده می‌شود. زمانی که کاربر در کوییز شرکت می‌کند، باید به همراه پاسخ‌های خود، زمان پاسخ‌دهی و اطلاعات دیگر را ارسال نماید. در این API، کاربر نمی‌تواند دوباره در همان کوییز شرکت کند.
+
+---
+
+## 📄 توضیحات مقادیر پاسخ
+
+| کلید                   | نوع داده        | توضیحات                                                 |
+|------------------------|-----------------|---------------------------------------------------------|
+| `quiz`                 | Integer         | شناسه کوییز که کاربر در آن شرکت کرده است.               |
+| `started_at`           | DateTime        | زمان شروع کوییز.                                        |
+| `ended_at`             | DateTime        | زمان پایان کوییز.                                        |
+| `total_timing`         | Integer         | مدت زمان کلی که کاربر برای پاسخ‌دهی به کوییز صرف کرده است.|
+| `question_score`       | Integer         | امتیاز به‌دست‌آمده توسط کاربر در پاسخ به سوالات کوییز.  |
+| `timing_score`         | Integer         | امتیاز به‌دست‌آمده توسط کاربر بر اساس زمان پاسخ‌دهی.    |
+| `total_score`          | Integer         | امتیاز کلی کاربر در کوییز (ترکیب امتیاز سوالات و زمان).|
+| `answers`              | Array           | لیستی از پاسخ‌های کاربر به سوالات.                     |
+| `answers.question`     | Integer         | شناسه سوالی که کاربر به آن پاسخ داده است.               |
+| `answers.option_num`   | Integer         | شماره گزینه‌ای که کاربر انتخاب کرده است.               |
+| `answers.at_time`      | DateTime        | زمانی که کاربر پاسخ به سوال را ارسال کرده است.         |
+| `answers.answer_timing`| Integer         | مدت زمان پاسخ‌دهی به سوال (در ثانیه).                  |
+
+---
+## errors:
+# کاربر از قبل کوعیز را شرکت کرده است
+```json
+{
+  "status": "error",
+  "code": "validation_error",
+  "status_code": 400,
+  "message": "There were validation errors.",
+  "errors": [
+    {
+      "field": "quiz",
+      "message": "you have already participated in the quiz"
+    }
+  ] 
+}
+‍```
+
+---
+## پاسخ موفق (201 Created)
+
+در صورتی که ثبت‌نام موفقیت‌آمیز باشد و پاسخ‌ها ذخیره شوند، یک شیء JSON مشابه با نمونه زیر برگشت داده می‌شود:
+
+### پاسخ:
+```json
+{
+    "quiz": 1,
+    "started_at": "2024-11-29T12:00:00Z",
+    "ended_at": "2024-11-29T12:30:00Z",
+    "total_timing": 1800,
+    "question_score": 80,
+    "timing_score": 10,
+    "total_score": 90,
+    "answers": [
+        {
+            "question": 1,
+            "option_num": 3,
+            "at_time": "2024-11-29T12:05:00Z",
+            "answer_timing": 30
+        },
+        {
+            "question": 2,
+            "option_num": 1,
+            "at_time": "2024-11-29T12:15:00Z",
+            "answer_timing": 45
+        }
+    ]
+}
+"""
+    
+def doc_quiz_detail():
+    return """
+# 📋 Quiz Detail API
+
+با ایدی درس میتواند وارد یک کوعیز شوید
+این api
+سوالات کوعیز و جزعیاتش را برمیگرداند
+
+
+## URL
+`GET /path/<lesson_id>/`
+
+## پارامترها
+
+- `lesson_id`: شناسه درس برای دریافت کوییز مرتبط.
+
+## پاسخ موفق (200 OK)
+
+در صورتی که درس دارای کوییز باشد، یک شیء JSON با اطلاعات کوییز برگشت داده می‌شود.
+
+### پاسخ:
+
+```json
+{
+    "id": 1,
+    "permission": true,
+    "lesson": 101,
+    "title": "Quiz on Python Basics",
+    "description": "A quiz on the basics of Python programming.",
+    "each_question_timing": 30,
+    "questions": [
+        {
+            "id": 1,
+            "question": "What is the output of print(2 + 3)?",
+            "options": [
+                {"id": 1, "title": "5"},
+                {"id": 2, "title": "6"},
+                {"id": 3, "title": "7"},
+                {"id": 4, "title": "8"}
+            ],
+            "correct_answer": 1
+        },
+        {
+            "id": 2,
+            "question": "What is the result of 2 * 3?",
+            "options": [
+                {"id": 1, "title": "6"},
+                {"id": 2, "title": "5"},
+                {"id": 3, "title": "7"},
+                {"id": 4, "title": "8"}
+            ],
+            "correct_answer": 1
+        }
+    ]
+}
+"""
diff --git a/apps/quiz/migrations/0001_initial.py b/apps/quiz/migrations/0001_initial.py
new file mode 100644
index 0000000..44ea814
--- /dev/null
+++ b/apps/quiz/migrations/0001_initial.py
@@ -0,0 +1,102 @@
+# Generated by Django 3.2.4 on 2024-11-29 11:00
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('course', '0005_participant_unread_messages_count'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('account', '0004_user_skill'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Quiz',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(help_text='Quiz Title', max_length=255, verbose_name='title')),
+                ('each_question_timing', models.PositiveIntegerField()),
+                ('status', models.BooleanField(default=True)),
+                ('lesson', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='quizzes', to='course.lesson', verbose_name='lesson')),
+            ],
+            options={
+                'verbose_name': 'Quiz',
+                'verbose_name_plural': 'Quizzes',
+                'ordering': ('-id',),
+            },
+        ),
+        migrations.CreateModel(
+            name='QuizRankUser',
+            fields=[
+            ],
+            options={
+                'verbose_name': 'Rank Quiz',
+                'verbose_name_plural': 'Rank Quizzes',
+                'proxy': True,
+                'indexes': [],
+                'constraints': [],
+            },
+            bases=('account.user',),
+        ),
+        migrations.CreateModel(
+            name='QuizParticipant',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('started_at', models.DateTimeField(verbose_name='started at')),
+                ('ended_at', models.DateTimeField(verbose_name='ended at')),
+                ('total_timing', models.PositiveIntegerField(help_text='Seconds take to finish the quiz')),
+                ('question_score', models.PositiveIntegerField()),
+                ('timing_score', models.PositiveIntegerField()),
+                ('total_score', models.PositiveIntegerField()),
+                ('quiz', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='participants', to='quiz.quiz')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='uquizzes', to=settings.AUTH_USER_MODEL, verbose_name='user')),
+            ],
+            options={
+                'verbose_name': 'Participant',
+                'verbose_name_plural': 'Participants',
+                'ordering': ('-id',),
+            },
+        ),
+        migrations.CreateModel(
+            name='Question',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('question', models.CharField(max_length=255)),
+                ('option1', models.CharField(max_length=255, verbose_name='option 1')),
+                ('option2', models.CharField(max_length=255, verbose_name='option 2')),
+                ('option3', models.CharField(max_length=255, verbose_name='option 3')),
+                ('option4', models.CharField(max_length=255, verbose_name='option 4')),
+                ('correct_answer', models.PositiveSmallIntegerField(choices=[(1, 'Option 1'), (2, 'Option 2'), (3, 'Option 3'), (4, 'Option 4')])),
+                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='created at')),
+                ('priority', models.IntegerField(blank=True, null=True)),
+                ('quiz', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='questions', to='quiz.quiz', verbose_name='quiz')),
+            ],
+            options={
+                'verbose_name': 'Question',
+                'verbose_name_plural': 'Questions',
+                'ordering': ('-priority', '-id'),
+            },
+        ),
+        migrations.CreateModel(
+            name='ParticipantAnswer',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('option_num', models.PositiveSmallIntegerField(choices=[(1, 'Option 1'), (2, 'Option 2'), (3, 'Option 3'), (4, 'Option 4')], verbose_name='selected option')),
+                ('at_time', models.DateTimeField()),
+                ('answer_timing', models.PositiveSmallIntegerField(default=0, verbose_name='seconds take to answer')),
+                ('participant', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='answers', to='quiz.quizparticipant')),
+                ('question', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='quiz.question')),
+            ],
+            options={
+                'verbose_name': 'User Quiz Answer',
+                'verbose_name_plural': 'User Quiz Answers',
+                'ordering': ('-id',),
+            },
+        ),
+    ]
diff --git a/apps/quiz/migrations/0002_quiz_description.py b/apps/quiz/migrations/0002_quiz_description.py
new file mode 100644
index 0000000..a7b0f71
--- /dev/null
+++ b/apps/quiz/migrations/0002_quiz_description.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.4 on 2024-11-29 11:58
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('quiz', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='quiz',
+            name='description',
+            field=models.CharField(blank=True, max_length=55, null=True, verbose_name='Description'),
+        ),
+    ]
diff --git a/apps/quiz/models/__init__.py b/apps/quiz/models/__init__.py
index e69de29..16a10f1 100644
--- a/apps/quiz/models/__init__.py
+++ b/apps/quiz/models/__init__.py
@@ -0,0 +1,2 @@
+from .quiz import *
+from .participant import *
\ No newline at end of file
diff --git a/apps/quiz/models/participant.py b/apps/quiz/models/participant.py
index 8454bb5..305af43 100644
--- a/apps/quiz/models/participant.py
+++ b/apps/quiz/models/participant.py
@@ -5,7 +5,7 @@ from apps.account.models import User
 
 
 
-class Participant(models.Model):
+class QuizParticipant(models.Model):
     quiz = models.ForeignKey('quiz.Quiz', on_delete=models.CASCADE, related_name='participants')
     user = models.ForeignKey('account.User', on_delete=models.CASCADE, verbose_name='user', related_name='uquizzes')
     started_at = models.DateTimeField(verbose_name='started at')
@@ -30,7 +30,7 @@ class Participant(models.Model):
 
     @staticmethod
     def get_user_ranks(quiz_id):
-        return Participant.objects.filter(quiz_id=quiz_id).annotate(
+        return QuizParticipant.objects.filter(quiz_id=quiz_id).annotate(
             rank=Window(
                 expression=Rank(),
                 order_by=F('total_score').desc()
@@ -47,7 +47,7 @@ class ParticipantAnswer(models.Model):
         (4, 'Option 4'),
     ]
 
-    participant = models.ForeignKey(Participant, on_delete=models.CASCADE, related_name='answers')
+    participant = models.ForeignKey(QuizParticipant, on_delete=models.CASCADE, related_name='answers')
     question = models.ForeignKey("quiz.Question", on_delete=models.CASCADE)
     option_num = models.PositiveSmallIntegerField(choices=CHOICES, verbose_name='selected option')
     at_time = models.DateTimeField()
diff --git a/apps/quiz/models/quiz.py b/apps/quiz/models/quiz.py
index ec9972c..26bda6a 100644
--- a/apps/quiz/models/quiz.py
+++ b/apps/quiz/models/quiz.py
@@ -1,9 +1,13 @@
 from django.db import models
+from django.utils.translation import gettext_lazy as _
+from apps.account.models import User
 
 
 
 class Quiz(models.Model):
-    course = models.ForeignKey("course.Course", verbose_name='course', related_name='quizzes', on_delete=models.CASCADE)
+    lesson = models.ForeignKey("course.Lesson", verbose_name=_('lesson'), related_name='quizzes', on_delete=models.CASCADE)
+    title = models.CharField(max_length=255, verbose_name=_('title'), help_text="Quiz Title")
+    description = models.CharField(max_length=55, blank=True, null=True, verbose_name="Description")
     each_question_timing = models.PositiveIntegerField()
     status = models.BooleanField(default=True)
 
@@ -51,3 +55,11 @@ class Question(models.Model):
 
     def __repr__(self):
         return f"Question(id={self.id})"
+
+
+class QuizRankUser(User):
+    class Meta:
+        proxy = True
+        verbose_name = 'Rank Quiz'
+        verbose_name_plural = 'Rank Quizzes'
+        
diff --git a/apps/quiz/serializers/__init__.py b/apps/quiz/serializers/__init__.py
new file mode 100644
index 0000000..16a10f1
--- /dev/null
+++ b/apps/quiz/serializers/__init__.py
@@ -0,0 +1,2 @@
+from .quiz import *
+from .participant import *
\ No newline at end of file
diff --git a/apps/quiz/serializers/participant.py b/apps/quiz/serializers/participant.py
new file mode 100644
index 0000000..2ec1280
--- /dev/null
+++ b/apps/quiz/serializers/participant.py
@@ -0,0 +1,45 @@
+from rest_framework import serializers
+
+from apps.quiz.models import QuizParticipant, ParticipantAnswer
+
+
+class ParticipantAnswerSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ParticipantAnswer
+        fields = ['question', 'option_num', 'at_time', 'answer_timing']
+
+
+
+class QuizParticipantSerializer(serializers.ModelSerializer):
+    user = serializers.HiddenField(default=serializers.CurrentUserDefault())
+    answers = ParticipantAnswerSerializer(many=True)
+
+    def validate_quiz(self, obj):
+        if QuizParticipant.objects.filter(quiz=obj, user=self.context['request'].user).exists():
+            raise serializers.ValidationError('you have already participated in the quiz')
+
+        return obj
+
+    class Meta:
+        model = QuizParticipant
+        fields = [
+            'quiz', 'user', 'started_at', 'ended_at', 'total_timing',
+            'question_score', 'timing_score', 'total_score',
+            'answers',
+        ]
+
+    def create(self, validated_data):
+        answers = validated_data.pop('answers', [])
+        obj = super().create(validated_data)
+        answers_objs = []
+        for ans in answers:
+            answers_objs.append(
+                ParticipantAnswer(
+                    participant=obj,
+                    **ans,
+                )
+            )
+
+        ParticipantAnswer.objects.bulk_create(answers_objs)
+
+        return obj
diff --git a/apps/quiz/serializers/quiz.py b/apps/quiz/serializers/quiz.py
new file mode 100644
index 0000000..08c6c55
--- /dev/null
+++ b/apps/quiz/serializers/quiz.py
@@ -0,0 +1,59 @@
+from rest_framework import serializers
+
+from apps.quiz.models import Question, Quiz, QuizParticipant
+from apps.course.models import Lesson
+
+
+
+
+
+
+
+class QuizListSerializer(serializers.ModelSerializer):
+    permission = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Quiz
+        fields = ['id', 'title', 'description', 'permission', 'each_question_timing',]
+
+    def get_permission(self, obj):
+        # Check if the user has participated in this quiz
+        user = self.context['request'].user
+        participated = QuizParticipant.objects.filter(user=user, quiz=obj).exists()
+        return not participated
+
+
+
+
+class QuestionSerializer(serializers.ModelSerializer):
+    options = serializers.SerializerMethodField()
+
+    def get_options(self, obj) -> list:
+        return [
+            {
+                'id': i,
+                'title': getattr(obj, f"option{i}")
+            } for i in range(1, 5)
+        ]
+
+    class Meta:
+        model = Question
+        fields = ['id', 'question', 'options', 'correct_answer']
+
+
+class QuizSerializer(serializers.ModelSerializer):
+    lesson = serializers.PrimaryKeyRelatedField(read_only=True)
+    questions = QuestionSerializer(many=True)
+    permission = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Quiz
+        fields = ['id', 'permission', 'lesson', 'title', 'description', 'each_question_timing', 'questions']
+
+    def get_permission(self, obj):
+        # Check if the user has participated in this quiz
+        user = self.context['request'].user
+        participated = QuizParticipant.objects.filter(user=user, quiz=obj).exists()
+        return not participated
+
+
diff --git a/apps/quiz/urls.py b/apps/quiz/urls.py
new file mode 100644
index 0000000..1245fea
--- /dev/null
+++ b/apps/quiz/urls.py
@@ -0,0 +1,13 @@
+from django.urls import path
+
+from . import views
+
+urlpatterns = [
+    # path('prizes/', PrizeListAPIView.as_view()),
+    # path('ranked-list/', RankedListAPIView.as_view()),
+    # path('self-rank/', SelfRankAPIView.as_view()),
+    # path('my-quizzes/', UserQuizScores.as_view()),
+    path('submit-quiz/', views.QuizParticipantCreateAPIView.as_view()),
+    path('<int:lesson_id>/', views.QuizDetailAPIView.as_view()),
+
+]
diff --git a/apps/quiz/views/__init__.py b/apps/quiz/views/__init__.py
new file mode 100644
index 0000000..16a10f1
--- /dev/null
+++ b/apps/quiz/views/__init__.py
@@ -0,0 +1,2 @@
+from .quiz import *
+from .participant import *
\ No newline at end of file
diff --git a/apps/quiz/views/participant.py b/apps/quiz/views/participant.py
new file mode 100644
index 0000000..2a0504d
--- /dev/null
+++ b/apps/quiz/views/participant.py
@@ -0,0 +1,22 @@
+from django.db.models import Value
+from rest_framework.generics import RetrieveAPIView, CreateAPIView
+from rest_framework.permissions import IsAuthenticated
+
+from drf_yasg.utils import swagger_auto_schema
+from drf_yasg import openapi
+
+from apps.quiz.serializers import QuizParticipantSerializer
+from apps.quiz.doc import *
+
+
+
+class QuizParticipantCreateAPIView(CreateAPIView):
+    serializer_class = QuizParticipantSerializer
+    permission_classes = [IsAuthenticated]
+
+
+    @swagger_auto_schema(
+        operation_description=doc_quiz_submit(),
+    )
+    def post(self, request, *args, **kwargs):
+        return super().post(request, *args, **kwargs)
diff --git a/apps/quiz/views/quiz.py b/apps/quiz/views/quiz.py
new file mode 100644
index 0000000..507d25c
--- /dev/null
+++ b/apps/quiz/views/quiz.py
@@ -0,0 +1,33 @@
+from django.db.models import Value
+from rest_framework.generics import RetrieveAPIView
+from rest_framework.permissions import IsAuthenticated
+
+from drf_yasg.utils import swagger_auto_schema
+from drf_yasg import openapi
+from apps.quiz.models import Quiz
+from apps.quiz.serializers.quiz import QuizSerializer
+from apps.quiz.doc import *
+
+
+
+class QuizDetailAPIView(RetrieveAPIView):
+    serializer_class = QuizSerializer
+    permission_classes = [IsAuthenticated]
+
+
+    @swagger_auto_schema(
+        operation_description=doc_quiz_detail(),
+    )
+    def get(self, request, *args, **kwargs):
+        return super().get(request, *args, **kwargs)
+    
+    def get_object(self):
+        return Quiz.objects.filter(
+            lesson__id=self.kwargs['lesson_id'],
+        ).annotate(
+            lesson__has_quiz=Value(True)
+        ).select_related('lesson').first()
+
+
+
+
diff --git a/config/settings/base.py b/config/settings/base.py
index 99005bc..8df4188 100644
--- a/config/settings/base.py
+++ b/config/settings/base.py
@@ -44,6 +44,7 @@ LOCAL_APPS = [
     'apps.api.apps.ApiConfig',
     'apps.course.apps.CourseConfig',
     'apps.chat.apps.ChatConfig',
+    'apps.quiz.apps.QuizConfig',
 ]
 
 THIRD_PARTY_APPS = [
diff --git a/config/urls.py b/config/urls.py
index 0eaccb1..34860d6 100644
--- a/config/urls.py
+++ b/config/urls.py
@@ -36,6 +36,7 @@ api_patterns = [
 
     path('account/', include('apps.account.urls')),    
     path('courses/', include('apps.course.urls')),    
+    path('quiz/', include('apps.quiz.urls')),    
     path('upload-tmp-media/', UploadTmpMedia.as_view()),
     
 ]