from fastapi import APIRouter,Depends,HTTPException
from schema.teacher_schema import TeacherRequest,TeacherResponse,TeacherUpdateRequest
from database import get_db
from dao.teacher_dao import add_teacher_dao,update_teacher_dao,get_teacher_dao,delete_teacher_dao

TeacherAPI = APIRouter()

@TeacherAPI.post('/teachers',response_model=TeacherResponse,summary='新增老师')
def add_teachers(teacher:TeacherRequest,db=Depends(get_db)):
    d = teacher.model_dump()
    r = add_teacher_dao(t=d,db=db)
    if not r:
        raise HTTPException(status_code=400,detail='教师编号已存在或新增失败！')
    return teacher


@TeacherAPI.put('/teachers/{teacher_id}',summary='更新老师')
def update_teachers(teacher_id:str,teacher:TeacherUpdateRequest,db=Depends(get_db)):
    d = teacher.model_dump(exclude_unset=True)
    r = update_teacher_dao(teacher_id=teacher_id,data=d,db=db) #返回更新的行数
    if not r:
        raise HTTPException(status_code=404,detail='老师不存在或未更新！')
    return {'code':200,'totals':r,'detail':'更新成功'}


@TeacherAPI.get('/teachers',response_model=list[TeacherResponse],summary='查询老师')
def get_teachers(teacher_id:str|None=None,
                 teacher_name:str|None=None,
                 db=Depends(get_db)):
    r = get_teacher_dao(teacher_id=teacher_id,teacher_name=teacher_name,db=db)
    if not r:
        raise HTTPException(status_code=404,detail='该老师不存在！')
    return r


@TeacherAPI.delete('/teachers/{teacher_id}',summary='删除老师')
def delete_teachers(teacher_id:str|None = None,db=Depends(get_db)):
    r = delete_teacher_dao(teacher_id,db)
    if not r:
        raise HTTPException(status_code=404,detail='老师不存在或删除失败！')
    return {'code':200,'totals':r,'detail':'删除成功！'}