• uid (string)

• email (string)

• username (string)

• profilePicUrl (string)

• enrolledCourses (array)

• completedSubtopics (map)

• achievements (array)

• createdAt (timestamp)

• id (string)

• name (string)

• description (string)

• icon (string)

• hasDetailedTopics (bool)

• topicNames (array)

• topics (array of objects)

- id, name, order, desc

- subtopics (array)

+ id, name, videoUrl

+ quizQuestions (array)

* question, options

* correctAnswerIndex

• createdAt (timestamp)

• id (string)

• name (string)

• description (string)

• icon (string)

• type (string)

• requirement (string)

• points (integer)