Single_Player_Chess/main.py

from bottle import template, get, run, post, request, redirect, response
from chess import Game


KEY = "abcdefgh"
TEMPLATE = "template.tpl"
games = dict()

def is_submitted(name):
    """Return True if form element with name was submitted."""
    return request.forms.get(name) != None

@get("/")
def index():
    """Drop cookie if it doesn't exist. Redirect to /game/."""
    if request.get_cookie("gameid", secret=KEY) not in games.keys():
        game = Game()
        id = str(max(list(map(int, games.keys()))+[0]) + 1)
        games[id] = game
        response.set_cookie("gameid", id, path='/', secret=KEY)
    redirect("/game/")

@get("/game/")
def show():
    """Show board. Redirect to index if id given by cookie not in games."""
    id = request.get_cookie("gameid", secret=KEY)
    if id not in games:
        redirect("/")
    return template(TEMPLATE, game=games[id], valid=True)

@post("/game/")
def move():
    """Catch form submissions and manipulate the game instance."""
    id = request.get_cookie("gameid", secret=KEY)
    valid = True
    if is_submitted("newgame"):
        del games[id]
        redirect("/")
    if is_submitted("prev"):
        games[id].prev()
    elif is_submitted("first"):
        games[id].first()
    elif is_submitted("next"):
        games[id].next()
    elif is_submitted("last"):
        games[id].last()
    else:
        AN = request.forms.get("move")
        valid = games[id].AN_move(AN)
    return template(TEMPLATE, game=games[id], valid=valid)


run(host="localhost", port=8080)