MakeYourLaws/MakeYourLaws

class Identity < ActiveRecord::Base
  belongs_to :user
  validates :uid, :provider, presence: true
  validates :uid, uniqueness: { scope: :provider }
  strip_attributes

  has_paper_trail

  # Find or create an identity based on an Omniauth response
  # Identities can belong to users (once claimed and confirmed) but might not always
  def self.by_omniauth auth
    uid = (auth.provider == 'coinbase' ? auth.info.id  : auth.uid)
    id = Identity.find_or_initialize_by(provider: auth.provider, uid: uid)

    %w(name email nickname first_name last_name location description image phone urls).each do |x|
      id.send "#{x}=", auth.info[x]
    end
    %w(token secret).each { |x| id.send "#{x}=", auth.credentials[x] }
    id.raw_info = auth.extra.to_json

    # Special case extractions
    case auth.provider
      when 'coinbase'
        # auth.info.balance # in BTC
        # auth.extra.buy_limit.amount / auth.extra.buy_limit.currency (BTC)
        # auth.extra.sell_limit.amount / auth.extra.sell_limit.currency (BTC)
        # auth.extra.buy_level
        # auth.extra.sell_level
      when 'open_id'
        id.nickname ||= auth.uid.match(%r{/://([^.]*).})[1] if auth.uid.include? 'livejournal'
        id.url = id.uid
      when 'google'
        if id.name =~ /@/ # don't accept email addresses as a "name"
          id.nickname ||= id.name.split('@').first
          id.name = nil
        end
        id.url = auth.extra['raw_info']['link']
      when 'github'
        id.url = id.urls['GitHub'] if id.urls
      when 'facebook'
        id.url = id.urls['Facebook'] if id.urls
      when 'twitter'
        id.url = id.urls['Twitter'] if id.urls
      when 'paypal'
        id.nickname = id.email
    end

    id.nickname ||= id.email.split('@').first if id.email

    id.save

    id
  end

  def display_name
    if name
      nickname ? "#{name} (#{nickname})" : name
    else
      email || uid
    end
  end
end