from datetime import datetime
from pydantic import BaseModel, EmailStr, field_validator


class UserOut(BaseModel):
    id: int
    email: EmailStr
    first_name: str | None = None
    last_name: str | None = None
    role: str
    created_at: datetime

    model_config = {"from_attributes": True}


class UserCreate(BaseModel):
    email: EmailStr
    first_name: str | None = None
    last_name: str | None = None
    password: str
    role: str = "viewer"


class UserUpdate(BaseModel):
    email: EmailStr | None = None
    first_name: str | None = None
    last_name: str | None = None
    password: str | None = None
    role: str | None = None


class UserPasswordChange(BaseModel):
    current_password: str
    new_password: str

    @field_validator("new_password")
    @classmethod
    def validate_new_password(cls, value: str) -> str:
        if len(value) < 8:
            raise ValueError("new_password must be at least 8 characters")
        return value