feat: implement LMS core (CMS, Courses, Enrollment, Progress, Auth) (Admin + API)

apps/courses/serializers.py

@@ -0,0 +1,28 @@
+from rest_framework import serializers
+
+from apps.common.api.base_serializer import BaseModelSerializer
+from apps.courses.models import Lesson, Course
+
+class LessonSerializer(BaseModelSerializer):
+    class Meta(BaseModelSerializer.Meta):
+        model = Lesson
+
+class CourseSerializer(BaseModelSerializer):
+    lessons = LessonSerializer(many=True, read_only=True)
+
+    class Meta(BaseModelSerializer.Meta):
+        model = Course
+
+class EnrollCourseResponseSerializer(serializers.Serializer):
+    course_id = serializers.IntegerField()
+    enrolled_at = serializers.DateTimeField()
+
+class MyCourseSerializer(serializers.Serializer):
+    course_id = serializers.IntegerField()
+    title = serializers.CharField()
+    enrolled_at = serializers.DateTimeField()
+
+class CompleteLessonResponseSerializer(serializers.Serializer):
+    lesson_id = serializers.IntegerField()
+    completed = serializers.BooleanField()
+    completed_at = serializers.DateTimeField()