from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session
from dao.wl_score_dao import get_score, create_score, update_score, delete_score, list_score_by_stu_no
from database import get_db
from scheme.wl_score_scheme import ScoreOut

router = APIRouter(tags=["成绩CRUD"])

# 说明：本模块统一用学号 stu_no（wl_score 表的主键就是它），
# 入参都是 query 标量而不是 JSON body，前端调用时注意别包 body。

# 新增成绩
@router.post("/score/add", response_model=ScoreOut)
def api_add_score(stu_no: str, exam_order: int, score: float, db: Session = Depends(get_db)):
    res = create_score(db, stu_no, exam_order, score)
    if res is None:
        raise HTTPException(status_code=400, detail="新增失败：学生不存在或成绩重复")
    return res

# 查询单条成绩
@router.get("/score/one", response_model=ScoreOut)
def api_get_score(stu_no: str, exam_order: int, db: Session = Depends(get_db)):
    s = get_score(db, stu_no, exam_order)
    if not s:
        raise HTTPException(status_code=404, detail="成绩记录不存在")
    return s

# 查询某个学生全部成绩
@router.get("/score/list/{stu_no}", response_model=list[ScoreOut])
def api_list_score(stu_no: str, db: Session = Depends(get_db)):
    return list_score_by_stu_no(db, stu_no)

# 更新成绩
@router.put("/score/update", response_model=ScoreOut)
def api_update_score(stu_no: str, exam_order: int, new_score: float, db: Session = Depends(get_db)):
    obj = update_score(db, stu_no, exam_order, new_score)
    if obj is None:
        raise HTTPException(status_code=404, detail="更新失败，记录不存在")
    return obj

# 删除成绩
@router.delete("/score/del")
def api_del_score(stu_no: str, exam_order: int, db: Session = Depends(get_db)):
    ok = delete_score(db, stu_no, exam_order)
    if not ok:
        raise HTTPException(status_code=404, detail="删除失败，记录不存在")
    return {"msg": "删除成功"}