from datetime import datetime
from typing import Optional

from pydantic import BaseModel, ConfigDict, EmailStr, Field


class UserBase(BaseModel):
    """
    Base user schema with shared attributes
    """
    email: EmailStr
    username: str
    full_name: Optional[str] = None
    is_active: bool = True

class UserCreate(UserBase):
    """
    Schema for user creation with password
    """
    password: str = Field(..., min_length=8)

class UserUpdate(BaseModel):
    """
    Schema for user updates
    """
    email: Optional[EmailStr] = None
    username: Optional[str] = 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 users in DB with id and timestamps
    """
    id: int
    created_at: datetime
    updated_at: datetime
    is_superuser: bool = False

    model_config = ConfigDict(from_attributes=True)

class User(UserInDBBase):
    """
    Schema for returning user information
    """
    pass

class UserInDB(UserInDBBase):
    """
    Schema with hashed password for internal use
    """
    hashed_password: str