from sqlalchemy import select
from sqlalchemy.orm import Session

from app.models.department import Department
from app.models.source_case import ScoringRule


class SourceCaseRepository:
    """病例辅助只读仓储：读取科室名称和病例评分规则。"""

    def __init__(self, db: Session) -> None:
        self.db = db

    def get_department_name(self, department_id: int | None) -> str:
        """科室名称：按 department 表读取当前病例所属科室名称。"""
        if not department_id:
            return ""
        department = self.db.scalar(select(Department).where(Department.id == department_id))
        return department.name if department else ""

    def get_scoring_rules(self, case_id: int) -> list[ScoringRule]:
        """评分规则：读取当前病例对应的基础评分细则。"""
        stmt = select(ScoringRule).where(ScoringRule.case_id == case_id).order_by(ScoringRule.id)
        return list(self.db.scalars(stmt).all())