sqlite db

- store entered giveaways into db
 - store notifications into db
 - future: add won notifications

src/tables.py

@@ -0,0 +1,54 @@
+from sqlalchemy import create_engine, Integer, String, Column, Table, \
+    MetaData, DateTime, Numeric, Enum, Boolean, TIMESTAMP, func
+from sqlalchemy_utils import database_exists, create_database
+from sqlalchemy.orm import registry
+from datetime import datetime
+import pytz
+
+mapper_registry = registry()
+mapper_registry.metadata
+Base = mapper_registry.generate_base()
+engine = create_engine('sqlite:///../config/sqlite.db', echo=True)
+
+
+class TableNotification(Base):
+    __tablename__ = 'notification'
+    id = Column(Integer, primary_key=True, nullable=False)
+    type = Column(String(50), nullable=False)
+    message = Column(String(300), nullable=False)
+    medium = Column(String(50), nullable=False)
+    success = Column(Boolean, nullable=False)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    __mapper_args__ = {"eager_defaults": True}
+
+
+class TableGiveaway(Base):
+    __tablename__ = 'giveaway'
+    id = Column(Integer, primary_key=True, nullable=False)
+    name = Column(String(200), nullable=False)
+    game_id = Column(String(10), nullable=False)
+    entries = Column(Integer(), nullable=False)
+    giveaway_created = Column(DateTime(timezone=True), nullable=False)
+    giveaway_ended = Column(DateTime(timezone=True), nullable=False)
+    cost = Column(Integer(), nullable=False)
+    copies = Column(Integer(), nullable=False)
+    entered = Column(Boolean(), nullable=False)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    added_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now())
+
+    __mapper_args__ = {"eager_defaults": True}
+
+    @classmethod
+    def unix_timestamp_to_utc_datetime(cls, timestamp):
+        return datetime.utcfromtimestamp(timestamp)
+
+
+if not database_exists(engine.url):
+    create_database(engine.url)
+    # emitting DDL
+    mapper_registry.metadata.create_all(engine)
+    Base.metadata.create_all(engine)
+else:
+    # Connect the database if exists.
+    engine.connect()