class User < ApplicationRecord

  validates :username,
    uniqueness: { message: "this username is taken" },
    format: { with: /\A^[0-9a-z-_]+\Z/,
    message: "Only allows lowercase alphanumeric characters with dashes and underscores",
    allow_blank: true }

  def self.from_omniauth(auth_hash)
    user = find_or_initialize_by(uid: auth_hash['uid'], provider: auth_hash['provider'])
    unless user.persisted?
      # user.username = self.send("#{auth_hash['provider']}_username", auth_hash) rescue nil
      user.name = auth_hash['info']['name']
    end
    user
  end

  def self.twitter_username(auth_hash)
    auth_hash['info']['nickname']
  end

  def ownership_name
    if username.end_with? 's'
      "#{username}'"
    else
      "#{username}'s"
    end
  end

  def room_url
    "/rooms/#{username}"
  end
end