from secrets import token_hex from json import JSONEncoder from sqlalchemy.ext.associationproxy import association_proxy from app import db from app.models import PlayerFoundObjective, Role class Objective(db.Model): """ !Always call set_hash after() creating new instance! """ __tablename__ = 'objective' id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(64)) game_id = db.Column(db.Integer, db.ForeignKey('game.id'), nullable=False) hash = db.Column(db.String(32), unique=True, nullable=False) longitude = db.Column(db.Numeric(precision=15, scale=10, asdecimal=False, decimal_return_scale=None)) # maybe check asdecimal and decimal_return_scale later? latitude = db.Column(db.Numeric(precision=15, scale=10, asdecimal=False, decimal_return_scale=None)) objective_found_by = db.relationship( 'PlayerFoundObjective', back_populates='objective', cascade='save-update, merge, delete, delete-orphan') found_by = association_proxy('objective_found_by', 'player', creator=lambda player: PlayerFoundObjective(player=player)) def set_hash(self): self.hash = token_hex(16) def owned_by(self, player): '''given player is an owner of a game object is part of''' return player in [gameplayer.player for gameplayer in self.game.game_players if gameplayer.role == Role.owner] class ObjectiveMinimalEncoder(JSONEncoder): def default(self, objective): return { 'name' : objective.name, 'hash' : objective.hash, 'longitude' : objective.longitude, 'latitude' : objective.latitude }