feat: bootstrap dodo phase one

backend/models.py

@@ -0,0 +1,78 @@
+from datetime import UTC, datetime
+from uuid import UUID
+
+from sqlalchemy import Boolean, DateTime, ForeignKey, Integer, String, Text
+from sqlalchemy.orm import Mapped, mapped_column
+from uuid_utils import uuid7
+
+from .db import Base
+
+
+def new_id() -> UUID:
+    return UUID(str(uuid7()))
+
+
+def utcnow() -> datetime:
+    return datetime.now(UTC)
+
+
+class AppState(Base):
+    __tablename__ = "app_state"
+    key: Mapped[str] = mapped_column(String(64), primary_key=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
+
+
+class User(Base):
+    __tablename__ = "users"
+    id: Mapped[UUID] = mapped_column(primary_key=True, default=new_id)
+    username: Mapped[str] = mapped_column(String(64), unique=True, index=True)
+    password_hash: Mapped[str] = mapped_column(Text)
+    timezone: Mapped[str] = mapped_column(String(64), default="Asia/Shanghai")
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
+
+
+class Session(Base):
+    __tablename__ = "sessions"
+    id: Mapped[UUID] = mapped_column(primary_key=True, default=new_id)
+    token_hash: Mapped[str] = mapped_column(String(64), unique=True, index=True)
+    user_id: Mapped[UUID] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
+    expires_at: Mapped[datetime] = mapped_column(DateTime(timezone=True))
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
+
+
+class Folder(Base):
+    __tablename__ = "folders"
+    id: Mapped[UUID] = mapped_column(primary_key=True, default=new_id)
+    user_id: Mapped[UUID] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
+    name: Mapped[str] = mapped_column(String(120))
+    position: Mapped[int] = mapped_column(Integer, default=0)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
+
+
+class TaskList(Base):
+    __tablename__ = "task_lists"
+    id: Mapped[UUID] = mapped_column(primary_key=True, default=new_id)
+    user_id: Mapped[UUID] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
+    folder_id: Mapped[UUID | None] = mapped_column(ForeignKey("folders.id", ondelete="SET NULL"), nullable=True)
+    name: Mapped[str] = mapped_column(String(120))
+    is_inbox: Mapped[bool] = mapped_column(Boolean, default=False)
+    position: Mapped[int] = mapped_column(Integer, default=0)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
+
+
+class Task(Base):
+    __tablename__ = "tasks"
+    id: Mapped[UUID] = mapped_column(primary_key=True, default=new_id)
+    user_id: Mapped[UUID] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
+    list_id: Mapped[UUID] = mapped_column(ForeignKey("task_lists.id", ondelete="CASCADE"), index=True)
+    parent_id: Mapped[UUID | None] = mapped_column(ForeignKey("tasks.id", ondelete="CASCADE"), nullable=True)
+    title: Mapped[str] = mapped_column(String(500))
+    description: Mapped[str] = mapped_column(Text, default="")
+    priority: Mapped[int] = mapped_column(Integer, default=0)
+    completed: Mapped[bool] = mapped_column(Boolean, default=False, index=True)
+    due_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
+    version: Mapped[int] = mapped_column(Integer, default=1)
+    position: Mapped[int] = mapped_column(Integer, default=0)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
+    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow, onupdate=utcnow)
+    deleted_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)