import pandas
import random

# Functions go here
def make_statement(statement, decoration):
    """Emphasises headings by adding decoration at the start and end"""

    print(f"{decoration * 3} {statement} {decoration * 3}")

def string_check(question, valid_answers=('yes', 'no'),
                 num_letters=1):
    """Checks that users enter the full word
    or the 'n' letter/s of a word from a range of valid responses"""

    while True:

        response = input(question).lower()

        for item in valid_answers:

            # check if the response is the entire word
            if response == item:
                return item

            # check if it's the 'n' letters
            elif response == item[:num_letters]:
                return item

        print(f"Please choose an option from {valid_answers}")

def instructions():
    make_statement("Instructions",decoration="{}")

    print('''

For each ticket holder enter...
-Their name
-Their age
-The payment method (cash/credit)

The program will record the ticket sale and calculate 
the ticket cost and profit.

Once you have either sold all the  tickets or entered
 the exit code (xxx),the program will display
the ticket sales information and write the data 
to a text file.

It will also choose one lucky ticket holder who wins the draw.
(Their ticket is free)
''')

def not_blank(question):
    """Checks that a user response is not blank"""

    while True:
        response = input(question)

        if response != "":
            return response

        print("Sorry this cant bbe blank. Please try again.\n")

def int_check(question):
    """Checks users enter an integer"""

    error = "Oops - please enter an integer"

    while True:

        try:
            # Return response if it's an integer
            response = int(input(question))

            return response

        except ValueError:
            print(error)

def currency(x):
    """Formats numbers as currency ($#.##)"""
    return "${:.2f}".format(x)


# main routine goes here

# initialise ticket numbers
MAX_TICKETS = 5
tickets_sold = 0

# initialise variables / non default options for string checker
payment_ans = ('cash', 'credit')

# ticket price list
CHILD_PRICE = 7.50
ADULT_PRICE = 10.50
SENIOR_PRICE = 6.50

# Credit card surcharge (currently 5%)
CREDIT_SURCHARGE = 0.05

# list to hold ticket details
all_names = []
all_ticket_costs = []
all_surcharges = []

mini_movie_dict = {
    'Name': all_names,
    'Ticket Price': all_ticket_costs,
    'Surcharge': all_surcharges
    }

# Program main heading
make_statement("Mini-Movie Fundraiser Program", "[]")

# ask user if they want to see the instructions and displays if necessary
print()
want_instructions = string_check("Do you want to see the instructions?")

if want_instructions == "yes":
    instructions()

print()

# Loop to get name age and payment details
while tickets_sold < MAX_TICKETS:
    # asl user for their name ( and check its not blank)\
    print()
    name = not_blank("Name: ")

    # if name is exit code break out of loop
    if name == "xxx":
        break

    # ask for their age and check its between 12 and 120
    age = int_check("Age: ")

    # Output error message / success message
    if age < 12:
        print(f"{name} is too young")
        continue

    # child ticket price is 7.50
    elif age < 16:
        ticket_price = CHILD_PRICE

    # adult ticket price is 10.50
    elif age < 121:
        ticket_price = ADULT_PRICE

    # senior price is 6.50
    elif age < 121:
        ticket_price = SENIOR_PRICE

    else:
        print(f"{name} is too old")

    # ask user for payment method ( cash / credit)
    pay_method = string_check("Payment method: ", payment_ans, 2)

    if pay_method == "cash":
        surcharge = 0

    # if paying by credit calculate surcharge
    else:
        surcharge = ticket_price* CREDIT_SURCHARGE

    # add name ticket cost and surcharge to all_lists
    all_names.append(name)
    all_ticket_costs.append(ticket_price)
    all_surcharges.append(surcharge)

    tickets_sold += 1

# End of ticket loop

# create dataframe/ table from dictionary
mini_movie_frame = pandas.DataFrame(mini_movie_dict)

# calculate the total payable & profit for each ticket
mini_movie_frame['Total'] = mini_movie_frame['Ticket Price'] + mini_movie_frame['Surcharge']
mini_movie_frame['Profit'] = mini_movie_frame['Ticket Price'] - 5

# work out the total paid and total profit...
total_paid = mini_movie_frame['Total'].sum()
total_profit = mini_movie_frame['Profit'].sum()

# currency formatting ( uses currency function)
add_dollars = ['Ticket Price', 'Surcharge', 'Total', 'Profit']
for var_item in add_dollars:
    mini_movie_frame[var_item] = mini_movie_frame[var_item].apply(currency)

# output movie frame without index
print(mini_movie_frame.to_string(index=False))

print()
print(f"Total Paid: ${total_paid:.2f}")
print(f"Total Profit: ${total_profit:.2f}")

# choose random winner
winner = random.choice(all_names)

# find index of winner (ie position in list)
winner_index = all_names.index(winner)
print("winner", winner, "list position", winner_index)

# retrieve Total won
total_won =mini_movie_frame.at[winner_index, 'Total']

# winner announcement
print(f"The lucky winner is {winner}. Their ticket worth {total_won} is free")


if tickets_sold == MAX_TICKETS:
    print(f"You have sold all the tickets (ie: {MAX_TICKETS} tickets)")
else:
    print(f"You have sold {tickets_sold} / {MAX_TICKETS} tickets")