# modules/number_system/grouping_techniques.py

title = "Grouping Techniques for Conversion"
description = "This module focuses on grouping techniques for conversion between bases such as binary, octal, and hexadecimal."

def generate_question():
    import random

    # Choose a random base to convert from, either 2, 8, or 16
    from_base = random.choice([2, 8, 16])
    to_base = 8 if from_base == 2 else 2 if from_base == 8 else 2

    has_fraction = False  # Track if the number includes a fraction

    if from_base == 2:
        # Generate a random binary number, optionally with a fractional part
        number = ''.join(random.choice('01') for _ in range(random.randint(4, 8)))
        if random.choice([True, False]):
            has_fraction = True
            number += '.' + ''.join(random.choice('01') for _ in range(random.randint(1, 4)))
    elif from_base == 8:
        # Generate a random octal number, optionally with a fractional part
        number = ''.join(random.choice('01234567') for _ in range(random.randint(2, 4)))
        if random.choice([True, False]):
            has_fraction = True
            number += '.' + ''.join(random.choice('01234567') for _ in range(random.randint(1, 3)))
    elif from_base == 16:
        # Generate a random hexadecimal number, optionally with a fractional part
        number = ''.join(random.choice('0123456789ABCDEF') for _ in range(random.randint(2, 4)))
        if random.choice([True, False]):
            has_fraction = True
            number += '.' + ''.join(random.choice('0123456789ABCDEF') for _ in range(random.randint(1, 3)))

    def group_conversion(number, from_base, to_base):
        if from_base == 2 and to_base == 8:
            # Convert binary to octal
            integer_part, *fraction_part = number.split('.')
            integer_result = oct(int(integer_part, 2))[2:]
            if fraction_part:
                fraction_result = ''.join([oct(int(f'{fraction_part[0][i:i+3]:0<3}', 2))[2:] for i in range(0, len(fraction_part[0]), 3)])
                return f"{integer_result}.{fraction_result}" if has_fraction else integer_result
            return integer_result
        elif from_base == 2 and to_base == 16:
            # Convert binary to hexadecimal
            integer_part, *fraction_part = number.split('.')
            integer_result = hex(int(integer_part, 2))[2:].upper()
            if fraction_part:
                fraction_result = ''.join([hex(int(f'{fraction_part[0][i:i+4]:0<4}', 2))[2:].upper() for i in range(0, len(fraction_part[0]), 4)])
                return f"{integer_result}.{fraction_result}" if has_fraction else integer_result
            return integer_result
        elif from_base == 8 and to_base == 2:
            # Convert octal to binary
            integer_part, *fraction_part = number.split('.')
            integer_result = ''.join([bin(int(digit, 8))[2:].zfill(3) for digit in integer_part])
            if fraction_part:
                fraction_result = ''.join([bin(int(digit, 8))[2:].zfill(3) for digit in fraction_part[0]])
                return f"{integer_result}.{fraction_result}" if has_fraction else integer_result
            return integer_result
        elif from_base == 16 and to_base == 2:
            # Convert hexadecimal to binary
            integer_part, *fraction_part = number.split('.')
            integer_result = ''.join([bin(int(digit, 16))[2:].zfill(4) for digit in integer_part])
            if fraction_part:
                fraction_result = ''.join([bin(int(digit, 16))[2:].zfill(4) for digit in fraction_part[0]])
                return f"{integer_result}.{fraction_result}" if has_fraction else integer_result
            return integer_result

    correct_answer = group_conversion(number, from_base, to_base)
    options = {correct_answer}

    # Generate incorrect answers ensuring they are unique and valid
    while len(options) < 4:
        if from_base == 2:
            invalid_number = ''.join(random.choice('01') for _ in range(len(number.replace('.', ''))))
            if has_fraction:
                invalid_number += '.' + ''.join(random.choice('01') for _ in range(len(number.split('.')[1])))
        elif from_base == 8:
            invalid_number = ''.join(random.choice('01234567') for _ in range(len(number.replace('.', ''))))
            if has_fraction:
                invalid_number += '.' + ''.join(random.choice('01234567') for _ in range(len(number.split('.')[1])))
        elif from_base == 16:
            invalid_number = ''.join(random.choice('0123456789ABCDEF') for _ in range(len(number.replace('.', ''))))
            if has_fraction:
                invalid_number += '.' + ''.join(random.choice('0123456789ABCDEF') for _ in range(len(number.split('.')[1])))
        
        # Generate the corresponding incorrect conversion
        invalid_converted_number = group_conversion(invalid_number, from_base, to_base)
        if invalid_converted_number != correct_answer:
            options.add(invalid_converted_number)

    options = list(options)
    random.shuffle(options)
    
    question = f"Convert the number {number} from base {from_base} to base {to_base} using grouping technique."
    explanation = f"The number {number} in base {from_base} is {correct_answer} in base {to_base} using the grouping technique."
    step_by_step_solution = [
        "Step 1: Group the digits of the number according to the conversion rules.",
        "Step 2: Convert each group to the corresponding digit in the target base.",
        "Step 3: Combine the digits to form the final answer."
    ]
    
    return {
        "question": question,
        "options": options,
        "correct_answer": correct_answer,
        "explanation": explanation,
        "step_by_step_solution": step_by_step_solution
    }