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selenium_chess.py
134 lines (116 loc) · 5.36 KB
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selenium_chess.py
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import time
import chess.engine
from selenium import webdriver
from selenium.common.exceptions import NoSuchElementException, StaleElementReferenceException
from constants import Side
from selenium_canvas import SeleniumCanvas
from vector_2d import Vector2D
class SeleniumChess:
def __init__(self, driver):
self.patterns = {
'chessboard': 'chess-board',
'bottom_player_white': '.clock-white.clock-bottom',
'bottom_player_black': '.clock-black.clock-bottom',
'move': '.node',
'selected_move': '.node.selected',
}
self.driver = driver
self.graphics = SeleniumCanvas(self.driver)
self.board = None
self.chains = None
self.board_dim = None
self.piece_dim = None
self.board_pos = None
def try_set_elements(self):
try:
self.board = self.driver.find_element_by_css_selector(self.patterns['chessboard'])
except NoSuchElementException:
return False # All elements must be found. No point in continuing if even one is missing
except Exception as e:
print('Exception in getting chessboard element: {0}'.format(e))
return False
return True
def update_variables(self):
self.chains = webdriver.ActionChains(self.driver)
self.board_dim = self.board.size.get('width') # Board is square; either dimension will do
self.piece_dim = self.board_dim // 8
self.board_pos = Vector2D(self.board.location.get('x'), self.board.location.get('y'))
def find_player_colour(self):
try:
self.driver.find_element_by_css_selector(self.patterns['bottom_player_white'])
return Side.WHITE
except NoSuchElementException: # Not white
try:
self.driver.find_element_by_css_selector(self.patterns["bottom_player_black"])
return Side.BLACK
except NoSuchElementException: # Not white or black
return Side.NEITHER
def get_selected_move(self):
try:
selected_move = self.driver.find_element_by_css_selector(self.patterns["selected_move"])
return selected_move.text
except NoSuchElementException:
print('Latest move not found')
return None
def get_move_list(self):
script = ""
script += f"const moves = document.querySelectorAll('{self.patterns['move']}');"
script += 'console.log(moves);'
script += "if (moves === null) { return [] }"
script += "return [...moves].map((move) => move.innerText);"
try:
move_list = self.driver.execute_script(script)
return move_list
except StaleElementReferenceException:
return self.get_move_list()
def notation_to_pos(self, ply, bottom_color):
if bottom_color == Side.WHITE:
pos = Vector2D(self.piece_dim * (ord(ply[0]) - 97), self.board_dim - self.piece_dim * int(ply[1]))
elif bottom_color == Side.BLACK:
pos = Vector2D(self.piece_dim * (7 - (ord(ply[0]) - 97)),
self.board_dim - self.piece_dim * (9 - int(ply[1])))
else:
print('Side to move should not be Side.NEITHER')
return
pos.x += self.board_pos.x
pos.y += self.board_pos.y
return pos
def draw_move_squares(self, context_name, move, bottom_color):
move_uci_string = move.uci()
start_ply = move_uci_string[:2]
end_ply = move_uci_string[2:4]
first_pos = self.notation_to_pos(start_ply, bottom_color)
second_pos = self.notation_to_pos(end_ply, bottom_color)
dims = Vector2D(self.piece_dim, self.piece_dim)
self.graphics.set_styles(context_name, visibility="'visible'")
self.graphics.draw_filled_rect(context_name, first_pos, dims)
self.graphics.draw_filled_rect(context_name, second_pos, dims)
def draw_move_arrows(self, context_name, move, bottom_color):
move_uci_string = move.uci()
center_offset = self.piece_dim // 2
start_ply = move_uci_string[:2]
end_ply = move_uci_string[2:4]
first_pos = self.notation_to_pos(start_ply, bottom_color)
first_pos.x += center_offset
first_pos.y += center_offset
second_pos = self.notation_to_pos(end_ply, bottom_color)
second_pos.x += center_offset
second_pos.y += center_offset
self.graphics.set_styles(context_name, visibility="'visible'")
self.graphics.draw_arrow(context_name, first_pos, second_pos)
def get_move_text_pos(self, move, bottom_color):
move_uci_string = move.uci()
center_offset = self.piece_dim // 2
start_ply = move_uci_string[:2]
end_ply = move_uci_string[2:4]
first_pos = self.notation_to_pos(start_ply, bottom_color)
first_pos.x += center_offset
first_pos.y += center_offset
second_pos = self.notation_to_pos(end_ply, bottom_color)
second_pos.x += center_offset
second_pos.y += center_offset
text_pos = Vector2D((first_pos.x + second_pos.x) / 2, (first_pos.y + second_pos.y) / 2)
return text_pos
def draw_move_text(self, context_name, move, text, bottom_color, fill_style):
text_pos = self.get_move_text_pos(move, bottom_color)
self.graphics.draw_centered_text(context_name, text, text_pos, fill_style=fill_style)