import csv
import random
from tkinter import *
from functools import partial  # To prevent unwanted windows

class StartGame:
    """
    Initial Game interface (asks users how many rounds they would like to play)
    """

    def __init__(self):
        # Gets number of rounds from user
        self.start_frame = Frame(padx=10, pady=10)
        self.start_frame.grid()

        # create play button
        self.play_button = Button(self.start_frame, font=("Arial", "16"),
                                  fg="#FFFFFF", bg="#0057D8", text="Play", width=10,
                                  command=self.check_rounds)
        self.play_button.grid(row=0, column=1, padx=20, pady=20)

    def check_rounds(self):
        """
        Checks users have entered 1 or more rounds
        """

        # Retrieve number of rounds to be played
        rounds_wanted = 5  # placeholder value
        self.to_play(rounds_wanted)

    def to_play(self, num_rounds):
        """
        Invokes Game GUI and passes across number of rounds to be played.
        """
        Play(num_rounds)
        # Hide root window (ie: hide rounds choice window).
        root.withdraw()

class Play:
    """
    Interface for playing the Colour Quest Game
    """

    def __init__(self, how_many):
        self.play_box = Toplevel()

        self.game_frame = Frame(self.play_box)
        self.game_frame.grid(padx=10, pady=10)

        self.heading_label = Label(self.game_frame, text="Colour Quest", font=("Arial", "16", "bold"),
                                   padx=5, pady=5)
        self.heading_label.grid(row=0)

        self.hints_button = Button(self.game_frame, font=("Arial", "14", "bold"),
                                   text="Hints", width=15, fg="#FFFFFF",
                                   bg="#FF8000", padx=10, pady=10, command=self.to_hints)
        self.hints_button.grid(row=1)

    def to_hints(self):
        """
        Display hints for playing game
        """
        DisplayHints(self)

class DisplayHints:
    """
    Displays hints for Colour Quest Game
    """

    def __init__(self, partner):
        # setup dialogue box and background colour
        background = "#ffe6cc"
        self.hints_box = Toplevel()

        # disable hints button
        partner.to_hints_button.config(state=DISABLED)

        # If users press the cross at the top, close hints and
        # 'release' the hints button
        self.hints_box.protocol("WM_DELETE_WINDOW",
                               partial(self.close_hints, partner))

        self.hints_frame = Frame(self.hints_box, width=300,
                                height=200, )
        self.hints_frame.grid()

        self.hints_heading_label = Label(self.hints_frame,
                                        text="hints / Info",
                                        font=("Arial", "14", "bold"))
        self.hints_heading_label.grid(row=0)

        hints_text = "To use the program, simply enter the temperature " \
                    "you wish to convert and then choose to convert " \
                    "to either degrees Celsius (centigrade) or " \
                    "Fahrenheit.. \n\n" \
                    " Note that -273 degrees C " \
                    "(-459 F) is absolute zero (the coldest possible " \
                    "temperature). If you try to convert a " \
                    "temperature that is less than -273 degrees C, " \
                    "you will get an error message. In\n\n " \
                    "To see your " \
                    "calculation history and export it to a text " \
                    "file, please click the 'History / Export' button."

        self.hints_text_label = Label(self.hints_frame,
                                      text=hints_text, wraplength=350,
                                      justify="left")
        self.hints_text_label.grid(row=1, padx=10)

        self.dismiss_button = Button(self.hints_frame, font=("Arial", "12", "bold"),
                                     text="Dismiss", bg="#CC6600",
                                     fg="#FFFFFF",
                                     command=partial(self.close_hints, partner))

        self.dismiss_button.grid(row=2, padx=10, pady=10)

        # List and loop to set background colour on
        # everything except the buttons.
        recolour_list = [self.hints_frame, self.hints_heading_label,
                         self.hints_text_label]

        for item in recolour_list:
            item.config(bg=background)

    def close_hints(self, partner):
        """
        Closes hints dialogue box (and enables hints button
        """
        # put hints button back to normal...
        partner.to_hints_button.config(state=NORMAL)
        self.hints_box.destroy()