from pydantic import BaseModel, Field, EmailStr, constr,validator
from typing import List, Optional
from enum import IntEnum

from datetime import datetime
#Валидация пароля
import re
def check_password_complexity(cls, password):                                   #Проверка пароля на соответствие сложности
    if password is None:
        return password
    if not re.search(r'[A-Za-z]', password):
        raise ValueError('Password must contain at least one letter')
    if not re.search(r'\d', password):
        raise ValueError('Password must contain at least one digit')
    if not re.search(r'[!@#$%^&*(),.?":{}|<>]', password):
        raise ValueError('Password must contain at least one special symbol')
    return password

#Валидация полей с пользователями
class UsersInfo(BaseModel):
    email:EmailStr = Field(..., min_length=6, max_length=254, description="email of the user")
    description: str = Field(..., description="description of the user")
    activated:bool = Field(..., description="Has the user activated their account")
    password:constr(min_length=8) = Field(..., description="Password with min 8 chars, letters and digits")
    @validator('password')
    def password_validator(cls, password):
        return check_password_complexity(cls, password)
class CreateUser(UsersInfo):
    pass
class UserUpdate(BaseModel):
    email:Optional[EmailStr] = Field(None, min_length=6, max_length=254, description="users' email")
    description:Optional[str] = Field(None, description="description of the user")
    activated:Optional[bool] = Field(None, description="Has the user activated their account")
    password:Optional[constr(min_length=8)] = Field(None, description="Password with min 8 chars, letters and digits")
    can_edit:Optional[bool] = Field(None, description="The user can edit something")
    can_delete:Optional[bool] = Field(None, description="The user can delete something")
    can_view:Optional[bool]=Field(None, descriptiopn="The user can view something")
    @validator('password')
    def password_validator(cls, password):
        return check_password_complexity(cls, password)
class UserLogin(BaseModel):
    email:EmailStr = Field(..., min_length=6, max_length=254, description="user's email")
    password:str = Field(..., description="Password")
class UserReset(BaseModel):
    email:EmailStr = Field(..., min_length=6, max_length=254, description="user's email")
    new_password:constr(min_length=8) = Field(None,description="New_password")
    @validator('new_password')
    def password_validator(cls, new_password):
        return check_password_complexity(cls, new_password)
class UserOut(BaseModel):
    email:EmailStr
    description:str
    activated:bool
    created_at:datetime