modules/mcq_generator.py

# modules/mcq_generator.py
"""Enhanced MCQ Quiz Generator Module"""

import random
from typing import Dict, List, Tuple
from modules.api_utils import (
    fetch_wikipedia_summary,
    search_wikipedia,
    fetch_related_topics,
    fetch_wikipedia_categories,
)


def generate_smart_distractors(
    correct_answer: str, topic: str, context: str
) -> List[str]:
    """Generate intelligent distractor options"""
    distractors = set()

    # Get related topics
    related = fetch_related_topics(topic, 10)
    distractors.update(related)

    # Get categories and use them for distractors
    categories = fetch_wikipedia_categories(topic)
    if categories:
        # Search for other items in the same categories
        for category in categories[:2]:
            similar_items = search_wikipedia(category, 5)
            distractors.update(similar_items)

    # Remove the correct answer and topic
    distractors.discard(correct_answer)
    distractors.discard(topic)

    # Convert to list and shuffle
    distractor_list = list(distractors)
    random.shuffle(distractor_list)

    # If not enough distractors, add generic ones
    if len(distractor_list) < 3:
        generic_distractors = [
            "Scientific Theory",
            "Historical Event",
            "Mathematical Concept",
            "Geographical Location",
            "Literary Work",
            "Technological Innovation",
            "Cultural Phenomenon",
            "Economic System",
            "Political Movement",
        ]
        distractor_list.extend(generic_distractors)

    return distractor_list[:3]


def generate_question_types(topic: str, summary_data: Dict, difficulty: str) -> Dict:
    """Generate different types of questions based on difficulty"""
    title = summary_data.get("title", topic)
    extract = summary_data.get("extract", "")
    description = summary_data.get("description", "")

    question_templates = {
        "Easy": [
            f"What is {title}?",
            f"Which of the following best describes {title}?",
            f"What category does {title} belong to?",
        ],
        "Medium": [
            f"What is the primary characteristic of {title}?",
            f"How is {title} commonly defined?",
            f"Which statement about {title} is most accurate?",
        ],
        "Hard": [
            f"What distinguishes {title} from related concepts?",
            f"In what context is {title} most significant?",
            f"What is the key principle underlying {title}?",
        ],
    }

    # Select appropriate question
    questions = question_templates.get(difficulty, question_templates["Easy"])
    question = random.choice(questions)

    # For harder difficulties, extract a more specific answer from the text
    if difficulty == "Easy":
        correct_answer = title
    elif difficulty == "Medium":
        # Try to find a defining characteristic
        sentences = extract.split(".")
        if len(sentences) > 1:
            correct_answer = description if description else title
        else:
            correct_answer = title
    else:  # Hard
        # Use a more complex answer
        correct_answer = description if description else title

    return {"question": question, "correct_answer": correct_answer, "context": extract}


def generate_mcq(topic: str, difficulty: str) -> Dict:
    """Generate an enhanced multiple choice question"""
    summary_data = fetch_wikipedia_summary(topic)

    if not summary_data:
        # Try searching for the topic
        search_results = search_wikipedia(topic, 3)
        if search_results:
            # Try the first search result
            topic = search_results[0]
            summary_data = fetch_wikipedia_summary(topic)

        if not summary_data:
            return {
                "error": "Topic not found on Wikipedia. Try a different topic or check spelling.",
                "status": False,
                "suggestions": search_results if search_results else [],
            }

    # Generate question based on difficulty
    question_data = generate_question_types(topic, summary_data, difficulty)

    # Generate smart distractors
    distractors = generate_smart_distractors(
        question_data["correct_answer"], topic, question_data["context"]
    )

    # Create options
    options = [question_data["correct_answer"]] + distractors[:3]
    random.shuffle(options)

    # Create explanation
    extract = summary_data.get("extract", "")
    explanation = extract[:300] + "..." if len(extract) > 300 else extract

    return {
        "question": question_data["question"],
        "options": options,
        "correct_answer": question_data["correct_answer"],
        "explanation": explanation,
        "topic": summary_data.get("title", topic),
        "difficulty": difficulty,
        "status": True,
    }


def generate_quiz_set(
    topic: str, difficulty: str, num_questions: int = 5
) -> List[Dict]:
    """Generate a set of questions for a complete quiz"""
    questions = []
    used_topics = set()

    # Get related topics for variety
    related_topics = [topic] + fetch_related_topics(topic, 10)

    for i in range(num_questions):
        # Try to use different related topics
        for related_topic in related_topics:
            if related_topic not in used_topics:
                question = generate_mcq(related_topic, difficulty)
                if question.get("status"):
                    questions.append(question)
                    used_topics.add(related_topic)
                    break

        # If we couldn't get enough questions, try the main topic again
        if len(questions) <= i:
            question = generate_mcq(topic, difficulty)
            if question.get("status"):
                questions.append(question)

    return questions