init: 初始化项目

backend/app/models/generation_task.py

@@ -0,0 +1,23 @@
+import uuid
+from datetime import datetime
+from sqlalchemy import String, Text, DateTime, ForeignKey
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from app.core.database import Base
+from app.models.base import UUIDMixin
+
+
+class GenerationTask(Base, UUIDMixin):
+    __tablename__ = "generation_tasks"
+
+    template_id: Mapped[uuid.UUID] = mapped_column(
+        UUID(as_uuid=True), ForeignKey("templates.id", ondelete="CASCADE"), nullable=False, index=True
+    )
+    status: Mapped[str] = mapped_column(String(20), nullable=False, default="pending")
+    result_file_path: Mapped[str | None] = mapped_column(String(500), nullable=True)
+    error_msg: Mapped[str | None] = mapped_column(Text, nullable=True)
+    celery_task_id: Mapped[str | None] = mapped_column(String(100), nullable=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True))
+    finished_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
+
+    template = relationship("Template")