from sqlalchemy import ForeignKey, Integer, String, Text
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.core.base_model import ModelMixin, TenantMixin, UserMixin


class EnergyReportChapterModel(ModelMixin, TenantMixin, UserMixin):
    """能源报告章节模型。"""

    __tablename__: str = "energy_report_chapter"
    __table_args__: dict[str, str] = {"comment": "能源报告章节标注表"}
    __loader_options__: list[str] = [
        "template",
        "rule",
        "created_by",
        "updated_by",
        "deleted_by",
        "tenant_by",
    ]

    template_id: Mapped[int] = mapped_column(
        Integer,
        ForeignKey("energy_report_template.id", ondelete="CASCADE", onupdate="CASCADE"),
        nullable=False,
        index=True,
        comment="能源报告模板ID",
    )
    chapter_name: Mapped[str] = mapped_column(String(128), nullable=False, comment="章节名称", index=True)
    chapter_order: Mapped[int] = mapped_column(Integer, default=999, nullable=False, comment="章节排序")
    rule_id: Mapped[int] = mapped_column(
        Integer,
        ForeignKey("rule_list.id", ondelete="RESTRICT", onupdate="CASCADE"),
        nullable=False,
        index=True,
        comment="关联规则ID",
    )
    description: Mapped[str | None] = mapped_column(Text, default=None, nullable=True, comment="描述")

    template = relationship("EnergyReportTemplateModel", lazy="selectin", foreign_keys=[template_id], uselist=False)
    rule = relationship("RuleModel", lazy="selectin", foreign_keys=[rule_id], uselist=False)