from ShootResult import ShootResult


class ShipField:

    def __init__(self):
        self.field = [' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ']

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

    def __getitem__(self, item):
        if item is None:
            return None

        if type(item) is not int and item.isnumeric():
            item = int(item)

        if type(item) is int and 0 <= item < len(self.field):
            return self.field[item]

        return None

    def action(self, row,col):
        if self.field_mode == 0:
            if self.check_possible(row, col):
                self.set_ship(row, col)

        elif self.field_mode == 1:
            self.shoot(row, col)

    def target(self, row, col):
        if self.field_mode == 0:
            self.clear_market()

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

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

    def clear_market(self):
        for i in range(0, len(self.field)):
            if self.field[i] == 'p':
                self.field = ''

    def set_ship(self, row, col):
        if row < 0 or row > self.field_size:
            return
        if col < 0 or col > self.field_size:
            return
        index = row * self.field_size + col
        if self.ship_direction == 0:
            if self.field_size - row < self.ship_size:
                return
            for r in range(row, row + self.ship_size):
                index = r * self.field_size + col
                self.field[index] = "1"
        if self.ship_direction == 1:
            if self.field_size - col < self.ship_size:
                return
            for c in range(col, col + self.ship_size):
                index = row * self.field_size + c
                self.field[index] = "1"

    def shoot(self, row, col):
        if row < 0 or row > self.field_size - 1:
            return ShootResult.UNDEFINED
        if col < 0 or col > self.field_size - 1:
            return ShootResult.UNDEFINED
        index = row * self.field_size + col
        if (self.field[index]).strip() == "":
            self.field[index] = "0"
            return ShootResult.EMPTY
        elif (self.field[index]).strip() == "1":
            self.field[index] = "\\"
            return ShootResult.DAMAGED
        else:
            return ShootResult.UNDEFINED

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

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

        return False

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

    def set_ship_size(self, value):
        if value is None:
            return

        if type(value) is str and value.isnumeric():
            value = int(value)

        if type(value) is int and 1 <= value <= 4:
            self.ship_size = value

    def set_ship_direction(self, value):
        if value is None:
            return

        if type(value) is str and value.isnumeric():
            value = int(value)

        if type(value) is int and 0 <= value <= 1:
            self.ship_direction = value

    def toggle_field_mode(self):
        if self.field_mode == 1:
            self.field_mode = 0
        else:
            self.field_mode = 0

    def print_field(self):
        for r in range(0, self.field_size):
            blocked_string = ""
            ship_string = ""
            for c in range(0, self.field_size):
                blocked_string += str(self.check_blocked(self, r, c))[0] + ", "
                ship_string += self.field[r * self.field_size + c] + ', '
            print(blocked_string[:-2] + '          ' + ship_string[:-2])
        print("********************************************************************")