import random
import os

def load_vocabulary(filepath):
    vocab = {}
    try:
        with open(filepath, 'r') as file:
            for line in file:
                eng, fra = line.strip().split(',')
                vocab[eng] = fra
    except FileNotFoundError:
        print("Error: The French_English data file could not be found.")
    except ValueError:
        print("Error: File data is malformed. Ensure 'English,French' format.")
    return vocab

def get_valid_student():
    name = input("Enter student name: ")
    while True:
        try:
            candidate_num = int(input("Enter candidate number (0001-9999): "))
            if 1 <= candidate_num <= 9999:
                return name, f"{candidate_num:04d}"
            print("Invalid range. Number must be between 0001 and 9999.")
        except ValueError:
            print("Invalid input type. Please enter a numerical value.")

def main():
    vocab = load_vocabulary("French_English.txt")
    if not vocab: return

    name, cand_num = get_valid_student()
    correct_words = set()
    score_history = []
    
    while True:
        available = [w for w in vocab.keys() if w not in correct_words]
        if len(available) < 10:
            print("Not enough new words left for a full 10-question quiz.")
            break
            
        questions = random.sample(available, 10)
        current_score = 0
        
        for word in questions:
            answer = input(f"What is the French translation for '{word}'? ")
            if answer.strip().lower() == vocab[word].lower():
                print("Correct!")
                current_score += 1
                correct_words.add(word)
            else:
                print(f"Incorrect. The correct spelling is '{vocab[word]}'.")
        
        score_history.append(current_score)
        attempts = len(score_history)
        print(f"\nAttempt {attempts} finished. You scored {current_score} out of 10.")
        
        try:
            with open("student_results.txt", "a") as results_file:
                results_file.write(f"{name},{cand_num},Attempt_{attempts},{current_score}/10\n")
        except IOError:
            print("Error: Could not save results to file.")
            
        if attempts >= 2:
            average = sum(score_history) / attempts
            print(f"Average score after {attempts} attempts: {average:.2f}/10")
            
        if input("\nWould you like to try another attempt? (y/n): ").lower() != 'y':
            break

if __name__ == "__main__":
    main()