from flask import Blueprint, render_template, redirect, url_for, flash, request from flask_login import login_required, current_user from app import db from app.models.quiz import TeacherQuiz, TeacherQuestion, QuizAttempt from app.models.user import User from app.forms.teacher.quiz import QuizForm, QuestionForm import json # Use the main teacher blueprint from app.routes.teacher import bp @bp.route('/quizzes') @login_required def manage_quizzes(): quizzes = TeacherQuiz.query.filter_by(created_by=current_user).order_by(TeacherQuiz.created_at.desc()).all() return render_template('teacher/quiz/manage.html', quizzes=quizzes) @bp.route('/quizzes/add', methods=['GET', 'POST']) @login_required def add_quiz(): form = QuizForm() if form.validate_on_submit(): quiz = TeacherQuiz( title=form.title.data.strip(), description=form.description.data.strip() if form.description.data else None, quiz_type=form.quiz_type.data, created_by=current_user ) db.session.add(quiz) db.session.commit() flash('Quiz created successfully! Now add questions.', 'success') return redirect(url_for('teacher.edit_quiz', quiz_id=quiz.id)) return render_template('teacher/quiz/add.html', form=form) @bp.route('/quizzes/edit/', methods=['GET', 'POST']) @login_required def edit_quiz(quiz_id): quiz = TeacherQuiz.query.get_or_404(quiz_id) if quiz.created_by != current_user: flash('Access denied.', 'error') return redirect(url_for('teacher.manage_quizzes')) form = QuizForm(obj=quiz) questions = quiz.questions if request.method == 'POST': if 'update_quiz' in request.form: if form.validate_on_submit(): quiz.title = form.title.data.strip() quiz.description = form.description.data.strip() if form.description.data else None quiz.quiz_type = form.quiz_type.data db.session.commit() flash('Quiz updated!', 'success') return redirect(url_for('teacher.edit_quiz', quiz_id=quiz.id)) elif 'add_question' in request.form: # Handle adding a new question question_text = request.form.get('question_text', '').strip() question_type = request.form.get('question_type', '') if not question_text or not question_type: flash('Question text and type are required.', 'error') else: question = TeacherQuestion( quiz_id=quiz.id, question_text=question_text, question_type=question_type ) if question_type == 'mcq': options = [] for i in range(1, 5): opt = request.form.get(f'option{i}', '').strip() if opt: options.append(opt) if len(options) < 2: flash('MCQ questions need at least 2 options.', 'error') return redirect(url_for('teacher.edit_quiz', quiz_id=quiz.id)) correct_option = request.form.get('correct_option', '') if not correct_option or not correct_option.isdigit() or int(correct_option) < 1 or int(correct_option) > len(options): flash('Please select a valid correct option.', 'error') return redirect(url_for('teacher.edit_quiz', quiz_id=quiz.id)) question.set_options(options) question.correct_answer = options[int(correct_option) - 1] elif question_type == 'qa': expected_answer = request.form.get('expected_answer', '').strip() if not expected_answer: flash('Expected answer is required for Q&A questions.', 'error') return redirect(url_for('teacher.edit_quiz', quiz_id=quiz.id)) question.expected_answer = expected_answer db.session.add(question) db.session.commit() flash('Question added!', 'success') elif 'delete_question' in request.form: question_id = request.form.get('question_id') if question_id: question = TeacherQuestion.query.get(int(question_id)) if question and question.quiz_id == quiz.id: db.session.delete(question) db.session.commit() flash('Question deleted!', 'success') return redirect(url_for('teacher.edit_quiz', quiz_id=quiz.id)) return render_template('teacher/quiz/edit.html', form=form, quiz=quiz, questions=questions) @bp.route('/quizzes/delete/', methods=['POST']) @login_required def delete_quiz(quiz_id): quiz = TeacherQuiz.query.get_or_404(quiz_id) if quiz.created_by != current_user: flash('Access denied.', 'error') return redirect(url_for('teacher.manage_quizzes')) db.session.delete(quiz) db.session.commit() flash('Quiz deleted!', 'success') return redirect(url_for('teacher.manage_quizzes')) @bp.route('/quizzes/results/') @login_required def quiz_results(quiz_id): """Show student-wise results for a specific quiz""" quiz = TeacherQuiz.query.get_or_404(quiz_id) if quiz.created_by != current_user: flash('Access denied.', 'error') return redirect(url_for('teacher.manage_quizzes')) # Get all attempts for this quiz attempts = QuizAttempt.query.filter_by(quiz_id=quiz_id).order_by(QuizAttempt.attempted_at.desc()).all() # Get attempt data with student info results = [] for attempt in attempts: results.append({ 'student': attempt.student, 'attempt': attempt, 'score': attempt.score, 'total_questions': attempt.total_questions, 'percentage': attempt.percentage, 'attempted_at': attempt.attempted_at }) return render_template('teacher/quiz/results.html', quiz=quiz, results=results) @bp.route('/quizzes/pending/') @login_required def quiz_pending(quiz_id): """Show students who haven't attempted a specific quiz""" quiz = TeacherQuiz.query.get_or_404(quiz_id) if quiz.created_by != current_user: flash('Access denied.', 'error') return redirect(url_for('teacher.manage_quizzes')) # Get all students who have attempted this quiz attempted_student_ids = db.session.query(QuizAttempt.student_id).filter_by(quiz_id=quiz_id).distinct().all() attempted_student_ids = [id[0] for id in attempted_student_ids] # Get all students who haven't attempted this quiz if attempted_student_ids: pending_students = User.query.filter( User.role == 'student', ~User.id.in_(attempted_student_ids) ).order_by(User.username).all() else: pending_students = User.query.filter(User.role == 'student').order_by(User.username).all() return render_template('teacher/quiz/pending.html', quiz=quiz, pending_students=pending_students)