from sqlalchemy import Column, Integer, String, ForeignKey, Enum import enum from sqlalchemy.ext.declarative import declarative_base from BotErrors import * from sqlalchemy import create_engine from sqlalchemy.orm import sessionmaker, relationship import sqlalchemy SQL_Base = declarative_base() class GeoffreyDatabase: def __init__(self, engine_arg): self.engine = create_engine(engine_arg, echo=True) Session = sessionmaker(bind=self.engine) self.session = Session() SQL_Base.metadata.create_all(self.engine) def add_object(self, obj): self.session.add(obj) def query_by_filter(self, obj_type, * args): filter_value = self.combine_filter(args) return self.session.query(obj_type).filter(filter_value).all() def delete_entry(self, obj_type, * args): filter_value = self.combine_filter(args) entry = self.session.query(obj_type).filter(filter_value) if entry.first() is not None: entry.delete() else: raise DeleteEntryError def combine_filter(self, filter_value): return sqlalchemy.sql.expression.and_(filter_value[0]) class TunnelDirection(enum.Enum): North = 'green' East = 'blue' South = 'red' West = 'yellow' def str_to_tunnel_dir(arg): arg = arg.lower() if arg == TunnelDirection.North.value: return TunnelDirection.North elif arg == TunnelDirection.East.value: return TunnelDirection.East elif arg == TunnelDirection.South.value: return TunnelDirection.South elif arg == TunnelDirection.West.value: return TunnelDirection.West else: raise ValueError class Player(SQL_Base): __tablename__ = 'Players' id = Column(Integer, primary_key=True) in_game_name = Column(String) def __init__(self, name): self.in_game_name = name class Location(SQL_Base): __tablename__ = 'Locations' id = Column(Integer, primary_key=True) name = Column(String) x = Column(Integer) y = Column(Integer) z = Column(Integer) tunnelNumber = Column(Integer) direction = Column(Enum(TunnelDirection)) owner = Column(String, ForeignKey('Players.in_game_name')) type = Column(String) __mapper_args__ = { 'polymorphic_on': type, 'polymorphic_identity': 'Location' } def __init__(self, name, x, y, z, owner, args): try: self.name = name self.x = x self.y = y self.z = z self.owner = owner if len(args) > 0: self.direction = TunnelDirection.str_to_tunnel_dir(args[0]) self.tunnelNumber = int(args[1]) except (ValueError, IndexError): raise LocationInitError def pos_to_str(self): return '(x= {}, y= {}, z= {})'.format(self.x, self.y, self.z) def nether_tunnel_addr_to_str(self): return '{} {}'.format(self.direction.value.title(), self.tunnelNumber) def __str__(self): if self.direction is not None: return "Name: {}, Position: {}, Tunnel: {}".format(self.name, self.pos_to_str(), self.nether_tunnel_addr_to_str()) else: return "Name: {}, Position: {}".format(self.name, self.pos_to_str()) class Shop(Location): __tablename__ = 'Shops' id = Column(Integer, ForeignKey('Locations.id'), primary_key=True) name = Column(String) inventory = relationship('ItemListing', back_populates='shop') __mapper_args__ = { 'polymorphic_identity': 'Shop' } def __init__(self, name, x, y, z, owner, args): Location.__init__(name, x, y, z, owner, args) class ItemListing(SQL_Base): __tablename__ = 'Items' id = Column(Integer, primary_key=True) name = Column(String) price = Column(Integer) shop_id = Column(Integer, ForeignKey('Shops.id')) shop = relationship('Shop', back_populates='inventory') def __init__(self, name, price) : self.name = name self.price = price def __str__(self): return "Item: {}, Price: {}".format(self.name, self.price)