import gradio as gr
import random

# 🧠 Sample questions for kids
questions = [
    {
        "code": 'print("Hello" + "World")',
        "options": ["HelloWorld", "Hello World", "Hello+World"],
        "answer": "HelloWorld",
        "hint": "What happens when you add two strings?"
    },
    {
        "code": 'print(2 * 3)',
        "options": ["6", "23", "5"],
        "answer": "6",
        "hint": "Multiplication or joining?"
    },
    {
        "code": 'x = 5\nprint(x + 2)',
        "options": ["7", "52", "2"],
        "answer": "7",
        "hint": "What is 5 + 2?"
    }
]

# 🔁 Track state
score = 0
question_index = 0
history = []

def get_current_question():
    return questions[question_index]

def show_question():
    q = get_current_question()
    return q["code"], gr.update(choices=q["options"]), "", f"⭐ Score: {score}"

def check_answer(choice):
    global score
    correct = get_current_question()["answer"]
    result = ""
    if choice == correct:
        result = "✅ Correct! Great job!"
        score_msg = f"⭐ Score: {score + 1}"
        score += 1
    else:
        result = f"❌ Oops! The correct answer was: {correct}"
        score_msg = f"⭐ Score: {score}"
    return result, score_msg

def skip_question():
    next_q()
    return show_question()

def get_hint():
    return f"💡 Hint: {get_current_question()['hint']}"

def next_q():
    global question_index
    history.append(question_index)
    question_index = (question_index + 1) % len(questions)

def prev_q():
    global question_index
    if history:
        question_index = history.pop()
    return