95 lines
3.9 KiB
Python
95 lines
3.9 KiB
Python
#!/usr/bin/env python3
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import json
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from datetime import datetime
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from sqlalchemy import create_engine, Column, Integer, String, Float, DateTime, ForeignKey, Text
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from sqlalchemy.orm import declarative_base, relationship, sessionmaker
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# Basis-Klasse (SQLAlchemy 2.0-konform)
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Base = declarative_base()
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class Bundle(Base):
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__tablename__ = 'bundles'
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id = Column(Integer, primary_key=True)
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machine_name = Column(String, unique=True)
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human_name = Column(String)
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current_version_id = Column(Integer, ForeignKey('bundle_versions.id'))
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# Beziehung zur aktuellen Version (explizit mit foreign_keys für current_version_id)
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current_version = relationship("BundleVersion", uselist=False, foreign_keys=[current_version_id])
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# Alle Versionen – hier verwenden wir einen lambda-Ausdruck, um die Spalte BundleVersion.bundle_id zu referenzieren
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versions = relationship("BundleVersion", back_populates="bundle", foreign_keys=lambda: [BundleVersion.bundle_id])
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# Verkaufshistorie
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sales_history = relationship("BundleSalesHistory", back_populates="bundle")
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class BundleVersion(Base):
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__tablename__ = 'bundle_versions'
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id = Column(Integer, primary_key=True)
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bundle_id = Column(Integer, ForeignKey('bundles.id'))
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version_hash = Column(String)
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version_data = Column(Text) # Als JSON-String
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timestamp = Column(DateTime, default=datetime.utcnow)
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# Hier geben wir explizit an, dass für diese Beziehung die Spalte bundle_id verwendet wird
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bundle = relationship("Bundle", back_populates="versions", foreign_keys=[bundle_id])
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class BundleSalesHistory(Base):
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__tablename__ = 'bundle_sales_history'
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id = Column(Integer, primary_key=True)
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bundle_id = Column(Integer, ForeignKey('bundles.id'))
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bundles_sold = Column(Float)
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timestamp = Column(DateTime, default=datetime.utcnow)
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bundle = relationship("Bundle", back_populates="sales_history")
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def main():
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# Verbindung zur bereits vorhandenen SQLite-Datenbank
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engine = create_engine('sqlite:///bundles.db')
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Session = sessionmaker(bind=engine)
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session = Session()
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# Alle Bundles aus der Tabelle 'bundles' abfragen
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bundles = session.query(Bundle).all()
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if not bundles:
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print("Die Datenbank enthält noch keine Bundles.")
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return
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for bundle in bundles:
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print("---------------------------------------------------")
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print(f"Bundle-ID: {bundle.id}")
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print(f"Machine Name: {bundle.machine_name}")
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print(f"Human Name: {bundle.human_name}")
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if bundle.current_version:
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print(f"Aktuelle Version (ID): {bundle.current_version.id}")
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print(f"Version Hash: {bundle.current_version.version_hash}")
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try:
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version_info = json.loads(bundle.current_version.version_data)
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# Hier geben wir nur einen gekürzten Ausschnitt der Version-Daten aus
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version_str = json.dumps(version_info, indent=2)[:300]
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print("Version-Daten (gekürzt):")
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print(version_str + " ...")
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except Exception:
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print("Version-Daten (roher Text):")
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print(bundle.current_version.version_data)
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print(f"Letzte Aktualisierung: {bundle.current_version.timestamp}")
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else:
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print("Keine aktuelle Version hinterlegt.")
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# Alle historischen Versionen ausgeben
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print("\nHistorische Versionen:")
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for version in bundle.versions:
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print(f" Version-ID: {version.id}, Timestamp: {version.timestamp}, Hash: {version.version_hash}")
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# Verkaufszahlen ausgeben
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print("\nVerkaufshistorie:")
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if bundle.sales_history:
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for sale in bundle.sales_history:
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print(f" {sale.timestamp}: {sale.bundles_sold} verkauft")
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else:
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print(" Keine Verkaufsdaten vorhanden.")
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print("---------------------------------------------------")
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if __name__ == "__main__":
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main()
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