from pydantic import BaseModel, EmailStr, Field
from typing import Optional
from datetime import datetime


class UserBase(BaseModel):
    """
    Base schema with common user attributes.
    """

    email: EmailStr
    full_name: Optional[str] = None
    is_active: Optional[bool] = True


class UserCreate(UserBase):
    """
    Schema for creating a new user, includes password.
    """

    password: str = Field(..., min_length=8)


class UserUpdate(BaseModel):
    """
    Schema for updating an existing user.
    """

    email: Optional[EmailStr] = None
    full_name: Optional[str] = None
    password: Optional[str] = Field(None, min_length=8)
    is_active: Optional[bool] = None


class UserInDBBase(UserBase):
    """
    Base schema for user data from the database.
    """

    id: int
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True


class User(UserInDBBase):
    """
    Schema for user data to return to client.
    """

    pass


class UserInDB(UserInDBBase):
    """
    Schema for user data with hashed_password field.
    """

    hashed_password: str