from tkinter import *
from enum import Enum

field_size = 10
ship_size = 4
ship_direction = 0
field_mode = 0

buttons = []

empty_field = [' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
               ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
               ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
               ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
               ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
               ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
               ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
               ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
               ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
               ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ']

my_field = list(empty_field)
enemy_field = list(empty_field)


class ShootResult(Enum):
    Empty = "EMPTY"
    Damaged = "DAMAGED"
    Killed = "KILLED"
    Undefined = "UNDEFINED"


def set_ship(row, col, size, direction):
    if row < 0 or row > field_size - 1:
        return   
    if col < 0 or col > field_size - 1:
        return
    
    index = row * field_size + col

    if direction == 0:
        if field_size - row < size:
            return
        for r in range(row, row + size):
            index = r * field_size + col
            my_field[index] = '1'

    if direction == 1:
        if field_size - col < size:
            return
        for c in range (col, col + size):
            index = row * field_size + c
            my_field[index] = '1'


def shoot(field, row, col):
    if row < 0 or row > field_size - 1:
        return ShootResult.Undefined
      
    if col < 0 or col > field_size - 1:
        return ShootResult.Undefined  
    
    index = row * field_size + col
    if (field[index]).strip() == "":
        field[index] = "0"
        return ShootResult.Empty   
    elif field[index] == "1":
        field[index] = "\\"
        return ShootResult.Damaged    
    elif field[index] == "1" or field[index] == "\\" or field[index] == "X":
        return ShootResult.Undefined 
    else:
        return ShootResult.Undefined 
      

def draw_field(window, field):
    for r in range(0, field_size):
        for c in range(0, field_size):
            index = r * field_size + c

            btn = Button(window, text='', width=5, height=2)
            btn.grid(column=c, row=r)
            btn.bind('<Button-1>', lambda e, x=r, y=c: left_button_click(field, x, y))
            btn.bind('<Button-3>', lambda e, x=r, y=c: right_button_click(field, x, y))
            btn.bind('<Enter>', lambda e, x=r, y=c: button_enter(field, x, y))

            buttons.append(btn)


def colorize(field, buttons):
    for i in range(len(field)):
        bg = "white"
        if field[i] == '1':
            bg = 'pink'
        if field[i] == '\\':
            bg = 'red'
        if field[i] == '0':
            bg = 'black'
        if field[i] == 'p':
            bg = 'blue'
        buttons[i].configure(bg=bg)


def check_possible(field, row, col):
    if ship_direction == 0:
        if field_size - row >= ship_size:
            for r in range(row, row + ship_size):
                if not check_blocked(field, r, col):
                    return False
            return True

    if ship_direction == 1:
        if field_size - col >= ship_size:
            for c in range(col, col + ship_size):
                if not check_blocked(field, row, c):
                    return False
            return True

    return False


def check_blocked(field, row, col):
    for r in range(row - 1, row + 2):
        for c in range(col - 1, col + 2):
            if 0 < r < field_size and 0 < c < field_size:
                cell = (field[r * field_size + c]).strip()
                if  cell != '' and cell != 'p':
                    return False
                
    return True


def left_button_click(field, row, col):
    # if field[row * field_size + col] == 'p':
    #     set_ship(row, col, ship_size, ship_direction)
    # else:
    #     shoot(field, row, col)

    if field_mode == 0:
        if check_blocked(field, row, col):
           set_ship(row, col, ship_size, ship_direction)
        else:
            shoot(field, row, col)
        
    colorize(field, buttons)


def right_button_click(field, row, col):
    global ship_direction
    if field_mode == 0 and check_possible(field, row, col):
        ship_direction = (ship_direction + 1) % 2

    # global ship_direction
    # if field_mode == 0:
    #     if ship_direction == 0:
    #         ship_direction = 1
    #     else:
    #         ship_direction = 0
    

def button_enter(field, row, col):
    for i in range(0, len(field)):
        if field[i] == 'p':
            field[i] = ' '
            
    if check_possible (field, row, col):
        if ship_direction == 0:
            for r in range(row, row + ship_size):
                field[r * field_size + col] = 'p'

        if ship_direction == 1:
            for c in range(col, col + ship_size):
                field[row * field_size + c] = 'p'

        colorize(field, buttons)


def keypress_handler(e):
    global ship_size
    ship_size = int(e.keysym)
    return ship_size


window = Tk()
window.title("Ship Craft!")
window.geometry('450x410')
window.bind_all('<KeyPress>', keypress_handler)

set_ship(1, 1, 4, 1)
set_ship(0, 6, 3, 0)
set_ship(7, 3, 1, 0)
set_ship(9, 9, 1, 0)
set_ship(5, 8, 3, 0)

draw_field(window, my_field)
colorize(my_field, buttons)

window.mainloop()

# for r in range(0, field_size):
#     blocked_string = ''
#     ship_string = ''
#     for c in range(0, field_size):
#         blocked_string += str(check_blocked(my_field, r, c))[0] + ', '
#         ship_string += my_field[r * field_size + c] + ', '

#     print(blocked_string[:-2] + '       ' + ship_string[:-2])

# print("#########################################################################") 


# for r in range(0, field_size):
#     possible_string = ''
#     impossible_string = ''
#     for c in range(0, field_size):
#         possible_string += str(check_possible(my_field, r, c))[0] + ', '
#         impossible_string += my_field[r * field_size + c] + ', '

#     print(possible_string[:-2] + '       ' + impossible_string[:-2])'