from sqlalchemy.ext.associationproxy import association_proxy
from app import db
from app.models import GameState, GamePlayer, Role

class Game(db.Model):
    __tablename__ = 'game'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(64), index=True, unique=True, nullable=False)
    state = db.Column(db.Enum(GameState), server_default=GameState(1).name, nullable=False)
    start_time = db.Column(db.DateTime)
    end_time = db.Column(db.DateTime)
    game_players = db.relationship(
        'GamePlayer',
        back_populates='game',
        cascade="save-update, merge, delete, delete-orphan")
    users = association_proxy('game_players', 'user',
        creator=lambda user: GamePlayer(user=user)) # to enable game.players.append(player)
    objectives = db.relationship(
        'Objective',
        lazy='select',
        backref=db.backref('game', lazy='joined'))
    notifications = db.relationship(
        'Notification',
        lazy='select',
        backref=db.backref('game', lazy='joined'))

    def last_player_locations(self):
        return [player.last_location(self) for player in self.users if player.locations]

    def bunnies(self):
        # pylint: disable=not-an-iterable
        return [gameplayer.player for gameplayer in self.game_players if gameplayer.role == Role.bunny]

    def last_locations(self, players):
        locations = []
        for player in players:
            locations.append(player.last_location(self))
        return locations

    def owned_by(self, player):
        # pylint: disable=not-an-iterable
        '''given player is an owner of game'''
        return player in [gameplayer.player for gameplayer in self.game_players if gameplayer.role == Role.owner]