"""사용자 — 프론트 `types/api.ts` UserPayload/UserResponse 모양으로 내보냄.
로그인 키는 email. username 은 email 과 같은 값으로 채움(Django 필수 칸이라)."""

from django.contrib.auth.models import AbstractUser
from django.db import models


class User(AbstractUser):
    email = models.EmailField("이메일", unique=True)
    user_name = models.CharField("표시 이름", max_length=40, blank=True)
    employee_id = models.CharField("사번", max_length=40, blank=True)
    department = models.CharField("부서", max_length=80, blank=True)

    class Meta:
        verbose_name = "사용자"
        verbose_name_plural = "사용자"

    @property
    def role(self) -> str:
        return "ADMIN" if self.is_superuser else "USER"

    def as_payload(self) -> dict:
        """UserPayload — 로그인 응답 안의 user."""
        return {
            "id": str(self.id),
            "email": self.email,
            "userName": self.user_name or None,
            "role": self.role,
            "employeeId": self.employee_id or None,
            "department": self.department or None,
            "authProvider": "local",
        }

    def as_response(self) -> dict:
        """UserResponse — GET /users/me."""
        return {
            **self.as_payload(),
            "isActive": self.is_active,
            "createdAt": self.date_joined.isoformat(),
            "updatedAt": (self.last_login or self.date_joined).isoformat(),
        }