init

backend/app/models/material.py

@@ -0,0 +1,28 @@
+from sqlalchemy import Boolean, Float, Integer, String, Text, func
+from sqlalchemy.dialects.postgresql import JSONB
+from sqlalchemy.orm import Mapped, mapped_column
+from datetime import datetime
+
+from app.database import Base
+
+
+class Material(Base):
+    __tablename__ = "materials"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    name: Mapped[str] = mapped_column(String(100), nullable=False)
+    category: Mapped[str] = mapped_column(String(50), nullable=False)
+    density_g_cm3: Mapped[float] = mapped_column(Float, nullable=False)
+    price_per_gram: Mapped[float] = mapped_column(Float, nullable=False)
+    flow_rate_mm3_s: Mapped[float] = mapped_column(Float, nullable=False)
+    max_temp_c: Mapped[int | None] = mapped_column(Integer)
+    min_temp_c: Mapped[int | None] = mapped_column(Integer)
+    strength: Mapped[str | None] = mapped_column(String(20))
+    flexibility: Mapped[str | None] = mapped_column(String(20))
+    chemical_resistance: Mapped[str | None] = mapped_column(String(20))
+    uv_resistance: Mapped[str | None] = mapped_column(String(20))
+    food_safe: Mapped[bool] = mapped_column(Boolean, default=False)
+    description: Mapped[str | None] = mapped_column(Text)
+    color_options: Mapped[dict] = mapped_column(JSONB, default=list)
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
+    created_at: Mapped[datetime] = mapped_column(default=func.now())