class Api::RegistrationsController < ApplicationController
  skip_before_action :authenticate_request!, only: [:create]

  def create
    user = User.new(registration_params)

    if user.save
      token = JwtService.encode(user_id: user.id)
      render json: {
        user: user_response(user),
        token: token
      }, status: :created
    else
      render json: { errors: user.errors.full_messages }, status: :unprocessable_entity
    end
  end

  private

  def registration_params
    params.require(:user).permit(:nickname, :password, :avatar)
  end

  def user_response(user)
    {
      id: user.id,
      nickname: user.nickname,
      avatar_url: user.avatar.attached? ? url_for(user.avatar) : nil,
      created_at: user.created_at
    }
  end
end