"""项目模型 - 含 PMFlow 与 Neural Sync 字段"""
from .base import Base
from sqlalchemy.orm import Mapped, mapped_column, relationship
from sqlalchemy import BigInteger, Integer, VARCHAR, Text, ForeignKey
from typing import Optional


class Project(Base):
    __tablename__ = "projects"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    name: Mapped[str] = mapped_column(VARCHAR(255), nullable=False)
    title: Mapped[Optional[str]] = mapped_column(VARCHAR(255), nullable=True)
    description: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    owner_id: Mapped[Optional[int]] = mapped_column(
        BigInteger, ForeignKey("users.id"), nullable=True
    )
    status: Mapped[str] = mapped_column(VARCHAR(50), nullable=False)
    domain_id: Mapped[Optional[int]] = mapped_column(BigInteger, nullable=True)
    assigned_role: Mapped[Optional[str]] = mapped_column(VARCHAR(50), nullable=True)
    signal_count: Mapped[int] = mapped_column(BigInteger, nullable=False, default=0)

    signal_links = relationship(
        "ProjectSignalLink", back_populates="project", cascade="all, delete-orphan"
    )