from pydantic import BaseModel
from datetime import date

from typing import Literal

class TeacherRequest(BaseModel):        #Teacher请求体模型
    teacher_id: str
    teacher_name: str
    gender: Literal[1,0]
    birthday: date|None = None
    native_region_code: str|None = None
    email: str|None = None
    phone: str
    graduation_school: str|None = None

class TeacherUpdateRequest(BaseModel):
    teacher_name: str|None = None
    gender: Literal[1,0]|None = None
    birthday: date | None = None
    native_region_code: str | None = None
    email: str | None = None
    phone: str
    graduation_school: str | None = None


class TeacherResponse(BaseModel):         #Teacher响应体模型
    teacher_id: str
    teacher_name: str
    gender: Literal[1,0]
    birthday: date|None = None
    native_region_code: str|None = None
    email: str|None = None
    phone: str
    graduation_school: str|None = None

class TeacherCourseRequest(BaseModel):       #TeacherCourse请求体模型
    teacher_id: str|None = None
    course_id: str|None = None

class TeacherCourseResponse(BaseModel):    #老师带班信息及课程表响应体模型
    teacher_id: str|None = None
    course_id: str|None = None
    model_config = {"from_attributes": True}     #可以直接读取ORM模型对象，不用手动转字典