def get_name():
    collect = True
    while collect:
        name = input("Enter the activity: ")
        if len(name) > 10:
            print("Name too long. Please try again.")
            continue
        else:
            collect = False
    return name

def get_amount():
    collect = True
    while collect:
        amount = float(input("Enter activity hourly rate in pence: "))
        # if less than 99 or greater than 599
        if amount < 99 or amount > 599:
            print("Amount out of range. Please try again.")
            continue
        else:
            collect = False
    return amount

def print_activities(data):
    print("\nActivity - Amount")
    print("-" * 15)
    for activity in data:
        print(f"{activity[0]} - £{activity[1]/100}")

def get_student_name():
    """Ask for and return a student's name."""
    return input("Enter student name: ")

def get_activity_choice(activities):
    """
    Show the available activities and ask the user to choose one.
    Retries until a valid activity name (from the ex20 list) is entered.
    Returns the chosen activity name as a string.
    """
    activity_names = [a[0] for a in activities]
    collect = True
    while collect:
        print("Available activities:", ", ".join(activity_names))
        choice = input("Enter the activity this student did: ")
        if choice not in activity_names:
            print("Not a valid activity. Please try again.")
            continue
        else:
            collect = False
    return choice

def get_hours():
    """Ask for the whole number of hours spent on the activity. Retries until valid."""
    collect = True
    while collect:
        hours_input = input("Enter number of hours spent (whole number): ")
        if not hours_input.isdigit():
            print("Please enter a whole number.")
            continue
        else:
            collect = False
    return int(hours_input)

def get_rate_for_activity(activities, activity_name):
    """Look up the hourly rate (in pence) for a given activity name."""
    for activity in activities:
        if activity[0] == activity_name:
            return activity[1]

def print_students(students):
    """Print student data in tabular format with column headings."""
    print("\nStudent Name - Activity - Hours - Total Raised")
    print("-" * 45)
    for student in students:
        name, activity, hours, total = student
        print(f"{name} - {activity} - {hours} - £{total/100}")


def main():
    # build activities table
    activities = []
    run = True
    while run:
        activity = get_name()
        amount = get_amount()
        activities.append([activity, amount])
        user_choice = input("Would you like to add another activity? (y/n): ")
        if user_choice.strip().lower() == "n":
            run = False

    print_activities(activities)

    # collect student data
    num_students = int(input("\nHow many students do you want to enter? "))

    students = []
    for _ in range(num_students):
        student_name = get_student_name()
        activity_choice = get_activity_choice(activities)
        hours = get_hours()
        rate = get_rate_for_activity(activities, activity_choice)
        total = hours * rate
        students.append([student_name, activity_choice, hours, total])

    print_students(students)


if __name__ == "__main__":
    main()