from fastapi import HTTPException
from pydantic import BaseModel, Field,field_validator, model_validator
from datetime import date
from typing import Optional

class EmploymentRequest(BaseModel):
    stu_id: int=Field(ge=1)
    email: str|None = None
    employment_opening_date:date|None = None
    offer_issuance_date:date|None = None
    company_name:str|None = None
    company_address:str|None = None
    salary:float|None = None

    @model_validator(mode='after')
    def check_date(self):
        if self.employment_opening_date and self.offer_issuance_date:
            if self.employment_opening_date > self.offer_issuance_date:
                raise ValueError('offer下发日期不能早于就业开放日期')
        return self

class EmploymentResponse(BaseModel):
    code:int = 200
    detail:str = 'OK'
    stu_id:int
    email: str|None = None
    employment_opening_date:date|None = None
    offer_issuance_date:date|None = None
    company_name:str|None = None
    company_address:str|None = None
    salary:float|None = None