feat: backend core — models, auth, CRUD, tests

backend/app/models/category.py

@@ -0,0 +1,36 @@
+import enum
+import uuid
+from datetime import datetime
+
+from sqlalchemy import Boolean, DateTime, Enum, ForeignKey, String, Uuid, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.database import Base
+
+
+class CategoryType(str, enum.Enum):
+    income = "income"
+    expense = "expense"
+
+
+class Category(Base):
+    __tablename__ = "categories"
+
+    id: Mapped[uuid.UUID] = mapped_column(Uuid, primary_key=True, default=uuid.uuid4)
+    user_id: Mapped[uuid.UUID] = mapped_column(
+        Uuid, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True
+    )
+    name: Mapped[str] = mapped_column(String(50), nullable=False)
+    type: Mapped[CategoryType] = mapped_column(
+        Enum(CategoryType, name="categorytype", native_enum=False, length=10),
+        nullable=False,
+    )
+    color: Mapped[str | None] = mapped_column(String(7), nullable=True)
+    icon: Mapped[str | None] = mapped_column(String(50), nullable=True)
+    is_default: Mapped[bool] = mapped_column(
+        Boolean, nullable=False, default=False, server_default="false"
+    )
+    deleted_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=False), nullable=True)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=False), nullable=False, server_default=func.now()
+    )