Added project structure and basic data models

spoolson/database/database.py

@@ -0,0 +1,7 @@
+from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine
+
+SQLALCHEMY_DATABASE_URL = "sqlite:///./sql_app.db"
+# SQLALCHEMY_DATABASE_URL = "postgresql://user:password@postgresserver/db"
+
+engine = create_async_engine(SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False})
+SessionLocal = async_sessionmaker(engine, autocommit=False, autoflush=False)

spoolson/database/models.py

@@ -0,0 +1,51 @@
+"""SQLAlchemy data models."""
+
+from datetime import datetime
+from typing import Optional
+
+from sqlalchemy import Integer, String
+from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column, relationship
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+class Vendor(Base):
+    __tablename__ = "vendor"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
+    name: Mapped[str] = mapped_column(String(64))
+    comment: Mapped[Optional[str]] = mapped_column(String(1024))
+
+
+class Filament(Base):
+    __tablename__ = "material"
+
+    id: Mapped[int] = mapped_column(primary_key=True, index=True)
+    name: Mapped[Optional[str]] = mapped_column(String(64))
+    vendor: Mapped[Optional["Vendor"]] = relationship()
+    material: Mapped[Optional[str]] = mapped_column(String(64))
+    price: Mapped[Optional[float]] = mapped_column()
+    density: Mapped[float] = mapped_column()
+    diameter: Mapped[float] = mapped_column()
+    weight: Mapped[Optional[float]] = mapped_column()
+    spool_weight: Mapped[Optional[float]] = mapped_column()
+    article_number: Mapped[Optional[str]] = mapped_column(String(64))
+    comment: Mapped[Optional[str]] = mapped_column(String(1024))
+    # TODO: Print settings
+    # TODO: Color?
+
+
+class Spool(Base):
+    __tablename__ = "spool"
+
+    id: Mapped[int] = mapped_column(primary_key=True, index=True)
+    registered: Mapped[datetime] = mapped_column()
+    first_used: Mapped[Optional[datetime]] = mapped_column()
+    last_used: Mapped[Optional[datetime]] = mapped_column()
+    filament: Mapped["Filament"] = mapped_column(index=True)
+    weight: Mapped[float] = mapped_column()
+    location: Mapped[Optional[str]] = mapped_column(String(64))
+    lot_nr: Mapped[Optional[str]] = mapped_column(String(64))
+    comment: Mapped[Optional[str]] = mapped_column(String(1024))