first commit

backend/app/models.py

@@ -0,0 +1,15 @@
+from sqlalchemy import String, Integer, DateTime
+from sqlalchemy.orm import Mapped, mapped_column
+from datetime import datetime, timezone
+from .db import Base
+
+
+class Task(Base):
+    __tablename__ = "tasks"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
+    title: Mapped[str] = mapped_column(String(200), nullable=False)
+    description: Mapped[str | None] = mapped_column(String(1000), nullable=True)
+    status: Mapped[str] = mapped_column(String(20), nullable=False, default="TODO")  # TODO/DOING/DONE
+    created_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
+    updated_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))