import re
from uuid import UUID
from typing import List

from src.users.repository import repository
from src.users.exceptions import is_user_valid, is_password_same, is_email_exist_to_other_user
from src.users.schemas import UserUpdateModel, UserResponseModel


class UserService:
  def __init__(self, repository: repository):
    self.repository = repository

  async def get_users(self) -> List[UserResponseModel]:
    return self.repository.get_users()

  async def get_user_details(self, user: str) -> UserResponseModel:
    is_user_valid(user)
    try:
      UUID(user, version=4)
      user_details = self.repository.get_user_details(user)
    except ValueError:
      if re.match(r"[^@]+@[^@]+\.[^@]+", user):
        user_details = self.repository.get_user_details_by_email(user)
      else:
        user_details = self.repository.get_user_details_by_name(user)
    return user_details

  async def update_user(self, user_info: UserUpdateModel) -> dict[str, str]:
    is_user_valid(user_info.id)
    is_email_exist_to_other_user(user_info.id, user_info.email)
    current_user_info = self.repository.get_user_details(user_info.id)
    if user_info.firstname is None:
      user_info.firstname = current_user_info["firstname"]
    if user_info.lastname is None:
      user_info.lastname = current_user_info["lastname"]
    if user_info.email is None:
      user_info.email = current_user_info["email"]

    if user_info.password:
      is_password_same(user_info.id,user_info.password)
    else:
      current_password = self.repository.get_user_password(user_info.id)
      user_info.password = current_password["password"]

    response = self.repository.save_user_info(user_info)

    return {"message": response}

user_service = UserService(repository)