import re
import uuid

from pydantic import BaseModel, EmailStr, Field, model_validator


class UserRegister(BaseModel):
    username: str = Field(min_length=3, max_length=64)
    email: EmailStr = Field()
    phone_number: str = Field(min_length=2, max_length=16, pattern=r"^\+[1-9]\d{1,14}$")
    password: str = Field(
        min_length=8,
        max_length=128,
        examples=["Abc123#!"],
        description="Password must conform to this regex: \n```\n^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])(?=.*?[#?!@$ %^&*-]).{8,128}$\n```",
    )

    @model_validator(mode="after")
    def validate_using_regex(self):
        self.__validate_password()
        return self

    def __validate_password(self):
        password_regex = r"^(?=[^A-Z]*[A-Z])(?=[^a-z]*[a-z])(?=\D*\d)(?=[^#?!@$ %^&*-]*[#?!@$ %^&*-]).{8,128}$"

        if not re.match(password_regex, self.password):
            raise ValueError("Password is too weak")


class UserUpdate(BaseModel):
    email: EmailStr | None = Field()
    phone_number: str | None = Field(min_length=2, max_length=16, pattern=r"^\+[1-9]\d{1,14}$")
    username: str | None = Field(min_length=3, max_length=64)
    first_name: str | None = Field(None, max_length=64)
    last_name: str | None = Field(None, max_length=64)


class UserPublic(BaseModel):
    uuid: uuid.UUID
    username: str
    email: str
    first_name: str | None
    last_name: str | None
    phone_number: str


class Token(BaseModel):
    access_token: str
    token_type: str = "bearer"


class TokenPayload(BaseModel):
    sub: str | None = None