from fastapi import APIRouter,Depends,HTTPException,Query
from dao.class_dao import add_class_dao, update_class_dao, delete_class_dao, hard_delete_class_dao,class_no_exist,get_class_list_dao,get_class_by_id_dao
from schemas.class_request import ClassCreate,ClassResponse,ClassUpdate
from database import get_db
from typing import Optional
from sqlalchemy.orm import Session
class_app = APIRouter()
@class_app.post('',response_model=ClassResponse)
def add_class(c:ClassCreate,db=Depends(get_db)):
    if class_no_exist(c.class_id,db):
        raise HTTPException(status_code=404,detail='该编号已经存在')
    ok,result = add_class_dao(c.model_dump(),db)
    if not ok:
        raise HTTPException(status_code=500,detail='服务器繁忙或指定的老师不存在')
    return ClassResponse(totals=1,data=result)
@class_app.put('{id}')
def update_class(id:int,c:ClassUpdate,db=Depends(get_db)):
    d = c.model_dump()
    r = update_class_dao(id=id ,update_data=d,db=db)
    if not r:
        raise HTTPException(status_code=500,detail='更新失败')
    return{'code':200,'total':1,'detail':'更新成功'}
'''
@class_app.get('')
def get_class(id:int,db=Depends(get_db),page:int=1,page_size:int=10):
    rows = get_class_dao(id=id,db=db,page=page,page_size=page_size)
    if rows:
        return rows
    raise HTTPException(status_code=404,detail='该班级不存在')
'''
@class_app.get('')
def get_classes(
        id: Optional[int] = Query(None, description="班级ID"),
        class_id: Optional[str] = Query(None, description="班级编号"),
        class_name: Optional[str] = Query(None, description="班级名称（支持模糊搜索）"),
        ht_id: Optional[int] = Query(None, description="班主任ID"),
        t_id: Optional[int] = Query(None, description="教师ID"),
        page: int = Query(1, ge=1, description="页码"),
        page_size: int = Query(10, ge=1, le=100, description="每页条数"),
        db: Session = Depends(get_db)
):
    # 如果明确传了 id，当作单条查询处理
    if id is not None:
        single_class = get_class_by_id_dao(id=id, db=db)
        if not single_class:
            raise HTTPException(status_code=404, detail="该班级不存在")
        return single_class

    # 多条件列表查询
    total, items = get_class_list_dao(
        db=db,
        class_no=class_id,
        class_name=class_name,
        ht_id=ht_id,
        t_id=t_id,
        page=page,
        page_size=page_size
    )

    return {
        "total": total,
        "page": page,
        "page_size": page_size,
        "items": items
    }
@class_app.delete('/{id}') #软删除
def delete_class(id:int,db=Depends(get_db)):
    rows = delete_class_dao(id=id,db=db)
    if not rows:
            raise HTTPException(status_code=404,detail='该班级不存在或已删除')
    return{'code':200,'total':rows,'detail':'删除成功'}

@class_app.delete('{id}/hard')
def hard_delete_class(id:int,db=Depends(get_db)):
    rows = hard_delete_class_dao(id=id,db=db)
    if not rows:
        raise HTTPException(status_code=404,detail='该班级不存在')
    return{'code':200,'total':rows,'detail':'物理删除成功'}