Merge remote-tracking branch 'origin/main'

src/Database/Database.py

@@ -0,0 +1,30 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+class Database:
+    def __init__(self, connection_string: dict):
+        """
+        connection_string ist ein Dictionary, z. B.:
+        {
+            "driver": "postgresql+psycopg2",
+            "username": "postgres",
+            "password": "mein_passwort",
+            "host": "localhost",
+            "port": 5432,
+            "database": "myapp"
+        }
+        """
+        self.connection_string = connection_string
+        self.engine = self._create_engine()
+        self.SessionLocal = sessionmaker(bind=self.engine)
+
+    def _create_engine(self):
+        conn = self.connection_string
+        url = f"{conn['driver']}://{conn['username']}:{conn['password']}@{conn['host']}:{conn['port']}/{conn['database']}"
+        return create_engine(url, echo=True)
+
+    def get_engine(self):
+        return self.engine
+
+    def get_session(self):
+        return self.SessionLocal()

src/Database/User.py

@@ -0,0 +1,15 @@
+from sqlalchemy import Column, Integer, String, DateTime, func
+from sqlalchemy.ext.declarative import declarative_base
+
+Base = declarative_base()
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    username = Column(String(50), unique=True, nullable=False)
+    password = Column(String(255), nullable=False)
+    created_at = Column(DateTime, server_default=func.now())
+
+    def __repr__(self):
+        return f"<User(id={self.id}, username='{self.username}')>"